A. The total mass is 40π.
B. The moment about the x-axis is 1024/5.
C. The moment about the y-axis is also 1024/5.
D. The center of mass is located at (8/5, 8/5).
E. The moment of inertia about the origin is 1024/3.
A. The total mass can be found by integrating the density function over the region:
m = ∬D p(x,y) dA
= ∫0^2π ∫0^4 5(r^2)(r dr dθ)
= 40π
Therefore, the total mass is 40π.
B. The moment about the x-axis can be found by integrating the product of the density function and the square of the distance to the x-axis over the region:
Mx = ∬D y p(x,y) dA
= ∫0^2π ∫0^4 5(r^2)(r sinθ)(r dr dθ)
= 1024/5
Therefore, the moment about the x-axis is 1024/5.
C. The moment about the y-axis can be found by integrating the product of the density function and the square of the distance to the y-axis over the region:
My = ∬D x p(x,y) dA
= ∫0^2π ∫0^4 5(r^2)(r cosθ)(r dr dθ)
= 1024/5
Therefore, the moment about the y-axis is 1024/5.
D. The center of mass can be found using the formulas:
xbar = My / m
ybar = Mx / m
Plugging in the values we found in parts B and C, we get:
xbar = (1024/5) / (40π) = 8/5
ybar = (1024/5) / (40π) = 8/5
Therefore, the center of mass is at the point (8/5, 8/5).
E. The moment of inertia about the origin can be found by integrating the product of the density function and the square of the distance to the origin over the region:
I = ∬D (x^2 + y^2) p(x,y) dA
= ∫0^2π ∫0^4 5(r^2)((r^2 sin^2θ) + (r^2 cos^2θ))(r dr dθ)
= 1024/3
Therefore, the moment of inertia about the origin is 1024/3.
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Which trigonometric ratios are correct for triangle abc? select three options. Sin(c) = cos(b) = tan(c) = sin(b) = tan(b) =.
The correct ratios are
sin(C) = [tex]\frac{\sqrt{3} }{2}[/tex] , tan(C) =[tex]\sqrt{3}[/tex] , sin(B) = [tex]\frac{1}{2}[/tex]
Consider the below figure attached to this question.
In triangle ABC, ∠A=90°, ∠B=30° and ∠C=60°, AC=9 and BC=18.
Using Pythagoras' theorem we get
hypotenuse² = perpendicular² + base²
BC² = AB² + AC²
⇒(18)² = AB² + 9²
⇒324 - 81 = AB²
Taking square root on both sides.
⇒√243 = AB
∴ √3 =AB
Trigonometric ratios are
[tex]sin(C) = \frac{opposite}{hypotenuse} = \frac{AB}{BC} = \frac{9\sqrt{3} }{18} =\frac{\sqrt{3} }{2}[/tex]
[tex]cos(B) = \frac{base}{hypotenuse} = \frac{AB}{BC} = \frac{9\sqrt{3} }{18} =\frac{\sqrt{3} }{2}[/tex]
[tex]tan(C) = \frac{opposite}{basee} = \frac{AB}{AC} = \frac{9\sqrt{3} }{9} =\sqrt{3}[/tex]
[tex]sin(B) = \frac{opposite}{hypotenuse} = \frac{AC}{BC} = \frac{9 }{18} =\frac{1}{2}[/tex]
[tex]tan(B) = \frac{opposite}{base} = \frac{AC}{AB} = \frac{9 }{9\sqrt{3} } =\frac{1 }{\sqrt{3} }[/tex]
Therefore, the correct ratios are
sin(C) = [tex]\frac{\sqrt{3} }{2}[/tex] , tan(C) = [tex]\sqrt{3}[/tex] , sin(B) =[tex]\frac{1}{2}[/tex]
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The complete question is:
Which trigonometric ratios are correct for triangle ABC? Select three options.
1. sin(C) = StartFraction StartRoot 3 EndRoot Over 2 EndFraction
2. cos(B) = StartFraction StartRoot 2 EndRoot Over 3 EndFraction
3. tan(C) = StartRoot 3 EndRoot sin(B) = One-half
4. tan(B) = StartFraction 2 StartRoot 3 EndRoot Over 3 EndFraction.
Hello! Help me please for points, will give brainliest if you answer correctly, too!
What is Riemann sum formula?
A Riemann sum is a method used to approximate the definite integral of a function. A definite integral is a measure of the area between a function and the x-axis over a certain interval. The Riemann sum formula is used to approximate this area by breaking up the interval into a number of subintervals (or "rectangles") and summing the areas of each rectangle. The formula for a Riemann sum is given by:
∑ f(x_i) * Δx
where f(x) is the function being integrated, x_i is the right endpoint of the i-th subinterval, Δx is the width of the subinterval, and the sum is taken over all the subintervals.
The Riemann sum formula is defined with a limit, as the number of subintervals approaches infinity and the width of subintervals approaches zero, the Riemann sum formula becomes the definite integral.
There are different ways to calculate Riemann sum, such as Left Riemann Sum, Right Riemann Sum, Midpoint Riemann Sum, and Trapezoidal Riemann Sum, each one of them has different ways to calculate x_i, thus leading to different results, but all of them approach the definite integral as the number of subinterval increases.
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Layla ha a coin that ha a 60% chance of howing head each time it i flipped. What i the probability that he get more than 3 head?
If there were only 5 coin tosses, the answer would be p5, where p= 0.6.
Now,
18 - 5 + 1 = 14 consecutive sequences of 5 flips contained in 18 flips. So it's tempting to say the answer is 14p5 ≈ 1.08, but it's also wrong. This is actually the number of expected 5-sticks, not the probability of at least one 5-stick. The problem is that since these sequences overlap, the events are not mutually exclusive, so we cannot sum them to get the overall probability. We have to subtract out all the possibilities of generating multiple 5 streaks, but calculating that probability is very complicated.
This post on stack swapping suggests an elegant approach that can be adapted to this problem. Let's define a sequence P(n). where P(n) is the probability of at least one consecutive heads after a total of n rollovers. So the answer of the question is P(18).
Clearly, P(0) = P(1) = P(2) = P(3) = P(4) = 0. This is because he can't get 5 heads in a row unless he flips the coin 5 times. P(5) is easy to compute, it only happens if all 5 flips are heads, so P(5) = p5 = 2433125 = 0.07776 .
Well, the length of the discontinuous part is n - 6, so the probability is
(1 −P(n−6)). The T,H,H,H,H,H part is the probability (1−p)p5 =(0,4)(0,6)5, and since these are independent events, the probability of THHHHH [not consecutive first letters] is (1−P( n −6))( 1−p) p5 .
Putting, All together:
P(n) = P(n−1) + (1−P(n−6))(1−p) p5.
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PLS HELP 100 POINTS
The function f(x) = 2x2 + 2 represents the rate of a bus traveling in miles per hour. The function g(x) = x + 2 represents the time the bus traveled in hours. Solve (f ⋅ g)(3), and interpret the answer.
(f ⋅ g)(3) = 100, the distance in miles the bus traveled
(f ⋅ g)(3) = 100, the number of buses
(f ⋅ g)(3) = 25, the distance in miles the bus traveled
(f ⋅ g)(3) = 25, the number of buses
Answer:
(f ⋅ g)(3) = 100, the distance in miles the bus traveled
Step-by-step explanation:
The product of (miles/hour) and (hours) is (miles), so only answers with units of distance are applicable. The numbers are ...
f(3) = 2·3² +2 = 20 . . . . miles per hour
g(3) = 3+2 = 5 . . . . hours
so (f·g)(3) = f(3)·g(3) = 20·5 = 100 . . . . miles
Answer:
(f ⋅ g)(3) = 100, the distance in miles the bus traveled.
Step-by-step explanation:
Given functions:
[tex]\begin{cases}f(x)=2x^2+2\\g(x)=x+2\end{cases}[/tex]
To calculate the composite function (f ⋅ g)(3), multiply function f(3) by function g(3).
[tex]\begin{aligned}(f \cdot g)(3)&=f(3) \cdot g(3)\\&=(2(3)^2+2)(3+2)\\&=(2(9)+2)(3+2)\\&=(18+2)(3+2)\\&=(20)(5)\\&=100\end{aligned}[/tex]
If function f(x) represents the rate of a bus travelling in miles per hour,
and function g(x) represents the time the bus travelled in hours:
[tex]\implies f(x) \cdot g(x)=\rm miles/hour \cdot hour=\dfrac{miles}{hour} \cdot hours=miles=distance[/tex]
Therefore, (f ⋅ g)(3) = 100 represents the distance in miles the bus traveled.
Helppp testtttttt
Answer choices in picture
John was able to assemble 10 bicycles in 8 hours. Considering that he is consistent assembling each bicycle, how many bicycles can John assemble in 1 hour?
Answer:
Step-by-step explanation:
2.25
In 1 hour one cycle and 1/4th of the second cycle can be assembled. or 1.25 cycles can be assembled.
Divisions:The division is a mathematical operation among the 4 fundamental mathematical operations. It is the process of dividing a group of items into smaller groups and used for equal distribution.
Divisions are used very often in our daily life like dividing food items, dividing money for people calculating averages, etc.
Here we have
John was able to assemble 10 bicycles in 8 hours.
Given that he is consistently assembling each bicycle
To find the number of cycles that can be assembled in 1 hr
Divide given number of cycles by the given time
Number cycles can be assembled = 10/8 = 1.25
This means John can assemble 1 cycle and 1/4 of the 2nd cycle.
Therefore,
In 1 hour one cycle and 1/4th of the second cycle can be assembled. or 1.25 cycles can be assembled.
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Consider the circle of radius 10 centered at the origin. Provide answers accurate to two decimal places. (a) the equation of the tangent line to the circle through the point (-6,8) has equation.
The equation of the tangent line to the circle through the point (-6,8) has equation = Y = 0.75x + 3.5
For circles that have a center at (0,0), the equation is [tex]x^{2} + y^{2} = r^{2}[/tex]
[tex]x^{2} + y^{2} = 10^{2}[/tex]
[tex]x^{2} + y^{2}[/tex] = 100
We check if the point (-6,8) is a circle
[tex]x^{2} + y^{2}[/tex] = 100
[tex]-6^{2} + 8^{2}[/tex] = 36 + 64 = 100
So the point is exactly at circle line, as picture below
We solve the gradient of a normal line (n)
Mn = [tex]\frac{y2 - y1}{x2 - x1}[/tex] = [tex]\frac{8 - 0}{-6 - 0}[/tex] = [tex]- \frac{8}{6}[/tex]
For perpendicular lines the gradient is
Mp = [tex]- \frac{1}{Mn}[/tex] = [tex]\frac{- 1 }{-\frac{8}{6} }[/tex] = [tex]\frac{6}{8} = \frac{3}{4}[/tex]
The standard equation of a linear line is
Y = mx + c
We need to find constant (c). We substitute x and y with point (-6,8)
So, x = -6 and y = 8
C = y - mx
C = 8 - ¾(-6) = 8 – [tex]\frac{18}{4}[/tex] = 3.5
With m = Mp = [tex]\frac{3}{4}[/tex] and c = 3,5
So, Y = mx + c
Y = [tex]\frac{3}{4}[/tex] x + 3.5
Y = 0.75x + 3.5
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What is the perimeter of a 5 cm pentagon?
A 5 cm pentagon has a perimeter of 25 cm.
What is perimeter?A perimeter is a closed route that covers, surrounds, or outlines a two-dimensional form or length. The circumference of a circle or an ellipse is its perimeter. There are various practical applications for calculating the perimeter. The perimeter of a thing is the distance surrounding it. Your house, for example, has a fenced-in yard. The perimeter of the barrier is its length. A perimeter is the length of a two-dimensional shape's border. It is sometimes defined as the total of the lengths of all the object's sides. The perimeter of such form is the algebraic sum of the lengths of each side. We have formulae for the various geometric forms.
Here,
side of pentagon=5 cm
perimeter of pentagon=5*side
=5*5
=25 cm
The perimeter of a 5 cm pentagon is 25 cm.
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What do you mean by latitude and longitude Class 7?
Horizontal lines called latitudes are used to measure distances north or south of the equator. Vertical lines known as longitudes are used to determine the west or east of the meridian in Greenwich, England. Latitude and longitude work together to help cartographers, geographers, and others find specific locations on the globe.
What is the uses of latitude?Any location's distance from the equator may be determined using its latitude, which is based on its degree. We can locate any point on Earth using longitude and latitude. The GPS or Global Positioning System uses these coordinates.
The grid system that enables us to locate absolute or precise places on the surface of the Earth is made up of latitude and longitude. Latitude and longitude can be used to pinpoint certain locations. Landmark identification also benefits from knowledge of latitude and longitude.
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x=8-2y,3x+y=6 solving linear equations
Answer:
So the solution is x = -0.57 and y = 30/7.
Step By Step Explanation:
To solve a system of linear equations, such as "x = 8 - 2y" and "3x + y = 6", we can use substitution or elimination method.
Using substitution method:
solve one equation for one variable
substitute the expression obtained in step 1 into the second equation
solve the equation obtained in step 2 to find the value of the variable that was solved for
substitute this value back into the first equation to find the value of the other variable.
x = 8 - 2y;
3x + y = 6;
solve for x in the first equation
x = 8 - 2y
substitute the value of x in the second equation
3(8-2y) + y = 6
solve the second equation obtained for y
24 - 6y + y = 6
25 - 6y = 6
-6y = -19
y = 19/6
substitute the value of y back in the first equation
x = 8 - 2(19/6) = 8 - (38/6) = 8 - (63/6) = 8 - (63/6) = 8 - 10.5 = -2.5
So the solution is x = -2.5 and y = 19/6
Alternatively, using elimination method:
Add or subtract one equation from the other to eliminate one of the variables.
Solve the resulting equation for the remaining variable.
Substitute this value into either of the original equations to find the value of the eliminated variable.
Multiply the first equation by -3
-3x = -24 + 6y;
Add the above equation to the second equation
-3x + y = 6
-24 + 6y + y = 6
-24 + 7y = 6
7y = 30
y = 30/7
substitute the value of y into the first equation
x = 8 - 2(30/7) = 8 - (60/7) = 8 - (60/7) = 8 - 8.57 = -0.57
So the solution is x = -0.57 and y = 30/7.
State the possible rational roots for each question. Then find all roots. One root has been given.
x² - 2x³ - 16x² + 2x + 15 = 0; -3
Rationales that may be involved : [tex]$\pm 1, \pm \frac{1}{2}, \pm 3, \pm \frac{3}{2}, \pm 5, \pm \frac{5}{2}, \pm 15, \pm \frac{15}{2}$[/tex] and real roots in reason: [tex]$1,-1,-\frac{15}{2} \mathrm{~}$[/tex] .
What is the rational roots of the given equation ?We can use the theorem of rational zeros since all coefficients are integers.The constant term's coefficient, or trailing coefficient, is 15, and The plus and minus signs can be used to find its components. [tex]$\pm 1, \pm 3, \pm 5, \pm 15$[/tex] . The options for p are as follows. The maximum degree of the term's coefficient, or the leading coefficient, is -2.
The plus and minus signs can be used to find its components. [tex]$\pm 1, \pm 2$[/tex] . The possible possibilities for q are as follows.
Discover each potential value for [tex]$\frac{p}{q}: \pm \frac{1}{1}, \pm \frac{1}{2}, \pm \frac{3}{1}, \pm \frac{3}{2}, \pm \frac{5}{1}, \pm \frac{5}{2}, \pm \frac{15}{1}, \pm \frac{15}{2}$[/tex]
These could be the rationale for the following: [tex]$\pm 1, \pm \frac{1}{2}, \pm 3, \pm \frac{3}{2}, \pm 5, \pm \frac{5}{2}, \pm 15, \pm \frac{15}{2}$[/tex] rationales that may be involved: [tex]$\pm 1, \pm \frac{1}{2}, \pm 3, \pm \frac{3}{2}, \pm 5, \pm \frac{5}{2}, \pm 15, \pm \frac{15}{2}$[/tex] .
real roots in reason: [tex]$1,-1,-\frac{15}{2} \mathrm{~}$[/tex].
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compare the ratios 5:12 and 7:9
Answer: 5:12< 7:9
Step-by-step explanation: (5:12) x3= 15:36 < 21:36 (7:9)x3=21:36
Answer:
[tex]\frac{5}{12} < \frac{7}{9}[/tex]
Step-by-step explanation:
[tex]5:12[/tex] [tex]7:9[/tex]
[tex]5*9[/tex] [tex]7*12[/tex] (using cross multiply)
[tex]45 < 84[/tex]
Therefore your answer is [tex]\frac{5}{12} < \frac{7}{9}[/tex]
Extra:
I hope this helped at all.
Note: (Please don't delete this answer moderators.)
For a trip to the beach Kelly drove for 5/6 hour and Joshua drove 2/5 hour estimate how much longer Kelly drove than Joshua.
Show your work
Determine the perimeter of the triangle.
Round to the nearest hundredth. #8
Upload images
The perimeter of the triangle formed by ABC is 26.56
What is Coordinate Geometry ?A coordinate system is a method for determining how to position points or other geometrical objects on a manifold, such as Euclidean space, uniquely using one or more integers, or coordinates.In order to make it simple to identify the points, a cartesian plane divides the plane space into two dimensions.
Here,
The coordinate plane is another name for it. The horizontal x-axis and the vertical y-axis are the two axes of the coordinate plane. The origin is the place where these coordinate axes connect, and they split the plane into four quadrants (0, 0). Additionally, each point in the coordinate plane is denoted by the coordinates (x, y), where x represents the point's location in relation to the x-axis and y represents its position in relation to the y-axis.
The points on the plane are
A (1,-2) , B(8,-5) and C (5,5)
The length of AB is
=> (81)2+(-5+1)2 = √72 +42
= √65
The length of BC is
(8-5)2+(-5-5)2 -
= /32+102 =
✓109
And Length of AC is
√(1 − 5)2 + (−2 −5)2 = √42 +72 = √65
The perimeter of the triangle is √65+ √65+√109 = 26.56
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Is 1 √ 5x a polynomial?
1 - √5x is not a polynomial.
What are polynomials?Algebraic expressions called polynomials include constants and indeterminates.
Polynomials can be thought of as a type of mathematics.
Nearly all branches of mathematics employ them to express numbers, and calculus is one of those branches where they play a crucial role.
A specific kind of expression is a polynomial.
A mathematical statement without the equals symbol (=) is called an expression. Let's examine the definition and usage of polynomials as they are described below.
An algebraic expression known as a polynomial requires that all of its exponents be whole numbers.
Any polynomial must have variable exponents that are non-negative integers. Although a polynomial contains variables and constants, we are unable to divide a polynomial by a variable.
Hence, 1 - √5x is not a polynomial.
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What is the sum of the measures of the exterior angles of a quadrilateral? If
necessary, round to the nearest tenth.
The sum of the measures of the interior angles of a quadrilateral is 360°. The sum of the measures of the exterior angles of a quadrilateral is 360°.
What is a quadrilateral?
A quadrilateral is a closed shape that has four sides, four vertices, and four angles. It's made by connecting four non-collinear points. The sum of quadrilateral interior angles is always 360 degrees.
Assume that ABCD is a quadrilateral.
The sum of the interior angle and the corresponding exterior angle is 180°.
The exterior angle of A is E. The exterior angle of B is F. The exterior angle of C is G. The exterior angle of D is H.
Thus ∠A + ∠E = 180° .....(i)
∠B + ∠F = 180° ......(ii)
∠C + ∠G = 180° ......(iii)
∠D + ∠H = 180° ......(iv)
Add equations (i), (ii), (iii), (iv):
∠A + ∠E + ∠B + ∠F + ∠C + ∠G + ∠D + ∠H = 180°+180°+180°+180°
(∠A+∠B + ∠C +∠D) + ∠E +∠F + ∠G + ∠H = 720°
The sum of all interior angles of quadrilateral is ∠A+∠B + ∠C +∠D = 360°.
360°+ ∠E +∠F + ∠G + ∠H = 720°
∠E +∠F + ∠G + ∠H = 720° - 360°
∠E +∠F + ∠G + ∠H = 360°
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Nathan measured the length of his cat. The length was a rational number. Which could be the length of nathan's cat?.
The length of Nathan's cat will be √27 inches.
Logic is the manipulation of all those concepts, whereas algebra is the study of abstract symbols.
Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction are all referred to by the abbreviation PEMDAS. This strategy is utilized to provide an accurate and comprehensive solution to the issue.
A number is referred to as rational if the value of a numerical expression terminates, in which case it is a rational number, and irrational if the value of the expression does not terminate.
5/2, 1/3, 45, 59, 144, and so forth are examples of rational numbers.
The irrational numbers include, e,√27, and so forth.
Nathan's cat will be about √27 inches long.
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The volume of a can of soup is 37.68 cubic inches and the length of the radius of the base
of the can is 1.5 inches. Use the formula to determine the height of the can of soup.
Use 3.14 for pi.
When the capacity and radius are stated as 37.68 cubic inches and 1.5 inches, respectively, the height of the soup can is 5.34 inches.
what is volume ?It is also known as the object's capacity. The fundamental equation for volume is length, width, and height, as opposed to the fundamental equation for the area of a rectangular shape, which is length, breadth, and height. The math is the same regardless of how you refer to the different dimensions. For example, you can substitute "depth" for "height." Volume is used to describe an object's capacity.Volume can also be used to describe how much space a three-dimensional object occupies.
given
volume of a can of soup = 37 .68 cubic inches
length of radius = 1.5 inches
v = 37 .68 cubic inches
r = 1.5 inches
v = [tex]\pi r^{2} h[/tex]
37.68 = 7.06 * h
h = 5.34 inches
When the capacity and radius are stated as 37.68 cubic inches and 1.5 inches, respectively, the height of the soup can is 5.34 inches.
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What is the equation of the line that passes through the point (4,-8)(4,−8) and has a slope of -2−2?
On solving the provided question we can say that by coordinates- (4,-8)(4,−8) ; y - y1 = m(x-x1) => y - x 12 = 0
what are coordinates?A coordinate system in geometry is a method that employs one or more integers or coordinates to identify the precise placement of points or other geometrical objects on a manifold, such as Euclidean space. Pairs of integers called coordinates are used to locate a point or object on a two-dimensional plane. The position of a point on a 2D plane is described by two integers known as the x and y coordinates. a group of numbers that represent precise positions. Usually, there are two numbers in the figure. The front-to-back distance is represented by the first number, while the top-to-bottom distance is represented by the second number. like in (12.5), when there are 12 units below and 5 above.
by coordinates-
(4,-8)(4,−8)
y - y1 = m(x-x1)
y +8 = x - 4
y - x 12 = 0
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this is due tonight and I still can't solve it :( its a test
For 16-19, graph each equation or inequality.
16. 2y – 4x < 8
17. -4y > -x + 12
18. | x + 3 |= y
19. |2x – 6| + 2 = y
The solution is the set of all points (x,y) that satisfy the inequalities:
y < 2x + 4, y < x/4 - 3, x + 3 = y, and 2x - 6 + 2 = y.
What is the graph of a function?
The graph of a function is a visual representation of the relationship between the input values (x-coordinates) and the output values (y-coordinates) of the function. In other words, it is a visual representation of the function's rule.
The graph of a function can take many different forms, depending on the function's rule. Linear functions, for example, will produce a straight line on the graph.
i) 2y - 4x < 8 can be solved by adding 4x to both sides and then dividing by 2, giving:
y < 2x + 4.
ii) -4y > -x + 12 can be solved by adding x to both sides and then dividing by -4, giving: y < x/4 - 3.
iii) | x + 3 | = y, you can split this into two cases:
i. x + 3 = y
ii. -(x + 3) = y
iv) |2x – 6| + 2 = y, you can split this into two cases:
i. 2x - 6 + 2 = y
ii. -(2x - 6) + 2 = y
We can use these equations to plot the graph on a coordinate plane.
Hence, the solution is the set of all points (x,y) that satisfy the inequalities:
y < 2x + 4, y < x/4 - 3, x + 3 = y, and 2x - 6 + 2 = y.
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What is the common ratio for this geometric sequence ? 28,23,18
The common ratio is 18/23.
What is the geometric sequence?
A geometric sequence is a sequence of numbers where each term is found by multiplying the previous term by a fixed number, called the common ratio. To find the common ratio of a geometric sequence, we can divide each term by the previous term.
It's important to note that in a geometric sequence, the quotient of any two consecutive terms is always constant and that is the common ratio.
A geometric sequence is a sequence in which each term is found by multiplying the preceding term by the same value. Its general term is.
aₙ= a₁ rⁿ⁻1. The value r is called the common ratio. It is found by taking any term in the sequence and dividing it by its preceding term.
Given the geometric sequence: 28, 23, 18
We can find the common ratio by dividing each term by the previous term:
r = 23/28 = 18/23
Therefore, the common ratio is 18/23.
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A man is climbing down from 250 feet high. He jumps 40 feet down and then descends at a
rate of 30 feet per minute. How many minutes did it take him to reach the ground?
5
7
8
11
It take him to 7 minutes reach the ground. You can calculate the tangent height of an object using the distance and angles
What is the height formula?By multiplying "D * tan (theta)," where "tan" is the tangent of angle theta, you can determine the height of the object of interest. For instance, rounding up, the height is 40 tan 50 = 47.7 metres if theta is 50 degrees and D is 40 metres.
rate of descent=30 feet per minute
Height of climb=250 feet
Since he jumped 40 feet in no time,
hence,
new height=250-40=210
Time taken to reach ground=height/rate of descent
Time taken=210/30
Time taken=7 minutes
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Rebecca can make 180 cupcakes at her bakery each day.
Currently, she has orders for more than 540 cupcakes.
Which inequality represents how many days it will take
Rebecca to complete her orders?
A x ≥ 3
B x≤ 3
C
x> 3
D x<3
option A The inequity x ≥ 3 indicates how many days it will take Rebecca to finish her orders.
what is inequality ?An inequality in mathematics is a relationship between two expressions or values that is not equal. Thus, imbalance leads to inequality. An inequality creates the link between two values that are not equal in mathematics. Egality is distinct from inequality. When two values are not equal, most commonly use the not equal symbol (). Different inequalities are used to contrast values, no matter how small or large. Many simple inequalities can be resolved by modifying the two sides until the variables are all that remain. But a number of things contribute to inequality: Negative values on both sides are divided or added. Trade off the left and right.
given
180x3=540 is the value.
0x3=0 3x8 =24
Add 1+2 tens and the tens on top of the one to obtain 540.
so option A The inequity x ≥ 3 indicates how many days it will take Rebecca to finish her orders.
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A tire with a 3-foot diameter makes a mark that is approximately 9 feet long after one rotation. A similar tire with a diameter of 2.25 feet makes a mark that is approximately 7 feet long after one rotation. Write an expression that can be used to find the approximate length of a tire mark after one rotation for a tire that has a diameter, d.
Answer: i’m the biggest bird
Step-by-step explanation:
i’m the biggest bird
Why is 8 not a perfect number?
8 is not a perfect number as sum of its proper divisors is not equal to 8.
A perfect number is a positive integer that is equal to the sum of its proper divisors, which are the divisors of the number excluding the number itself. In other words, a perfect number is a number that can be written as the sum of its divisors, excluding itself.
For example, the number 6 is a perfect number because its divisors are 1, 2, and 3, and 1+2+3 = 6.
8 is not a perfect number because it is not equal to the sum of its proper divisors. The divisors of 8 are 1, 2, 4, and 8, and 1+2+4 = 7, which is less than 8.
Therefore, 8 is not a perfect number. To this date, only 49 known perfect numbers have been found, they are all even numbers and the largest known perfect number is 2^(74,207,281) − 1, it has over 22 million digits.
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HELP!
i need help!
please
Answer:
729
Step-by-step explanation:
3x3x3=27
27x27=729
Answer:
[tex](3^3)^{2}[/tex] = [tex]729[/tex]
Step-by-step explanation:
To solve this problem, you need to utilize this exponent property:
[tex](a^n)^m = a^{n*m}[/tex]
In this problem,
a = 3
n = 3
m = 2
Substitute these values into the property and compute.
∴ [tex](a^n)^m = a^{n*m}\\(3^3)^2 = 3^{3*2}\\(3^3)^2 = 3^6\\(3^3)^2 = 729[/tex]
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Choose the situation below that has a positive rate of change between variables. A A car uses 25 gallons of gas for each mile it is driven. B A skydiver falls an average distance of 12,500 feet during a dive. C The height of a building increases by 10 feet for every story added. D All of the above
The situation below that has a positive rate of change between variables: "The height of a building increases by 10 feet for every story added".
What is positive rate of change?A positive rate of change indicates that the amount under consideration is rising over time, whereas a negative rate of change indicates that it is declining with time. Change rates can be positive or negative. This corresponds to a change in the y -value between the two data points. The term zero rate of change refers to a quantity that does not fluctuate over time. An growing function's average rate of change is positive, whereas a declining function's average rate of change is negative.
Here,
The case below that exhibits a positive rate of change between variables: "The height of a building grows by 10 feet for every floor added".
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Which of the following tables represent a proportional relationship?
Therefore , the solution of the given problem of proportionality relationship comes out to be it is not proportional relationship.
How does proportionality work?Relationships are regarded to as proportional when they continuously have the same ratio. For instance, the number of trees in an airport and the number of apples in a harvesting of apples depend on the average number of apples produced by each tree. A linear relation between two number or variables is referred to as being proportional in mathematics. If the initial quantity doubles, the other amount also does so. Whenever one of the parameters is reduced to 1/100th of the its previous value, the other decreases as well.
Here,
Given :
x= 1 , y=6
x=2,y=12
So , the equation is :
=> y =2x
The proportional relationship says that the line of the given equation passes through origin ,
=> y =2x
=> y = 2(0)
=> 0 =0
Thus , x =0 and y=0 because this line pass through origin it is proportional relationship.
Therefore , the solution of the given problem of proportional relationship comes out to be it is not proportional relationship.
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Help with part a.
picture shown below
A conclusion or a hypothesis presented on an unproven foundation in mathematics is referred to as a conjecture, conjectures 6,it is divisible by 2,4,9,12.
What kind of hypothesis is this, for instance?An opinion or a conclusion drawn from incomplete information is referred to as a hypothesis in the English language. It is interchangeable with verbs and nouns. A hypothesis could be accurate or inaccurate. For instance, if a person is seen on the street, they can have an opinion about how old they are.A conclusion or a hypothesis presented on an unproven foundation in mathematics is referred to as a conjecture.speculation (about anything) (about something) What the murderer was thinking is entirely speculative in our opinion. Think that... In his estimation, in ten years, the population may double. speculative in nature She speculated that a brand-new species might exist.Therefore the result is 6,it is divisible by 2,4,9,12.
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