Answers
Answer:
Step-by-step explanation:
21
16
27
15
70
Answer:
Step-by-step explanation:
Hello!
I think I can help.
Lets use the first problem and walk through it and I think it could help you with the others.
3/7 = ?/49
So basically with these problems you are working backwards. You are working right to left and dividing to figure out what you will need to multiply the other part of the fraction by.
So here we have 49 and 7 that line up with each other. (Always look for the fractions that line up horizontally)
Going right to left and dividing :
49 / 7
= 7
So we know that it was 7 x 7 to get that 49
So now we used the number we just found by dividing (7) and multiply it left to right by the other number to find the missing number (?).
If we do this we do :
3 x 7
= 21
And that is the missing number !
We plug that in right where the blank is (?) and we get :
3/7 = 21/49
I am not sure if you have to simplify this but you cant anyways. If you have questions about simplifying ask in the comments.
To check this we can actually multiply the side that had two numbers to begin with (the left side numbers) and multiply it by the number we found by dividing (7).
So we do this with 3/7 :
3 x 7 = 21
7 x 7 = 49
if we plug this back in we get :
21/49 = 29/49 and we know this is correct.
I hope this helps you solve the other problems. If you have any questions or are still confused with others please message me or comment and I will do what I can to help. :)
Related Questions
What is 35 degree angle in standard position?
Answers
After using ruler and following the steps described below
We get the standard position of 35 degree.
The given angle is = 35 degree
To draw standard position of angle:
We proceed it to draw by ruler
So, in order to get position,
Follow the following steps:
1: Draw a straight line with your ruler.
2: Place your protractor on the line and align the base of the protractor with the line.
3: Find the 35 degree mark on the protractor and make a small mark on the line at that point.
4: Move your protractor to the mark you just made.
5: Align the base of the protractor with the line and make another small mark on the line at the 35 degree mark.
6: Draw a straight line connecting the two points you just marked.
And there you have it! A 35 degree angle drawn on paper.
And after following these steps we get the standard potion angle 35 degree.
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Which of the following statements is true?
√9 is rational and √10 is rational.
√9 is irrational and √10 is irrational.
√9 is rational and √10 is irrational.
√9 is irrational and √10 is rational.
Answers
Answer:
[tex]\sqrt{9}[/tex] is rational and [tex]\sqrt{10}[/tex] is irrational
Step-by-step explanation:
The square root of 9 is 3 and the square root of 10 is a decimal that never stops.
The square root of 9 (√9) is rational because it results in an integer, which can be expressed as a fraction (3/1). However, the square root of 10 (√10), yields an approximate decimal that cannot be precisely expressed as a fraction, hence is an irrational number. Thus the statement √9 is rational and √10 is irrational is true.
Explanation:In Mathematics, a rational number is a number that can be expressed as a fraction where the numerator and denominator are integers and the denominator is not zero. Irrational numbers are numbers that cannot be expressed as fractions.
The square root of 9 is √9, which equals 3. This can be expressed as a fraction (3/1), so √9 is rational.
However, the square root of 10 is √10, which equals to approximately 3.16227766017. This cannot be accurately expressed as a fraction, so √10 is irrational.
Therefore, the true statement among the options provided is: √9 is rational and √10 is irrational.
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What is the solution to the following system of equations? (1 point) x − 3y = 6 2x + 2y = 4
Answers
Answer:
x = 3
y = -1
Step-by-step explanation:
Solving system of equations:Method: substitution
x - 3y = 6 --------------(I)
x = 6 + 3y -------------(II)
2x + 2y = 4 ----------(III)
Substitute x = 6 +3y in equation (II),
2*(6+3y) + 2y = 4
Use distributive property to open the parenthesis,
2*6 + 2*3y + 2y = 4
12 + 6y + 2y = 4
Combine like terms.
12 + 8y = 4
Subtract 12 from both sides,
8y = 4 - 12
8y = -8
Divide both sides by 8,
y = -8÷ 8
[tex]\boxed{\bf y = (-1)}\\[/tex]
Substitute y = -1 in equation (II) and find the value of x.
x = 6 + 3*(-1)
= 6 - 3
[tex]\sf \boxed{\bf x = 3}[/tex]
Answer:
(3, - 1 )
Step-by-step explanation:
x - 3y = 6 ( add 3y to both sides )
x = 3y + 6 → (1)
2x + 2y = 4 → (2)
substitute x = 3y + 6 into (2)
2(3y + 6) + 2y = 4
6y + 12 + 2y = 4
8y + 12 = 4 ( subtract 12 from both sides )
8y = - 8 ( divide both sides by 8 )
y = - 1
substitute y = - 1 into (1)
x = 3(- 1) + 6 = - 3 + 6 = 3
solution is (3, - 1 )
A balloon rises 2,0000ft every 2 min which equation models the relationship between the time x and the distance from the ground y
Answers
Answer:
The equation that models the relationship between the time x (in minutes) and the distance y (in feet) from the ground is:
y = 2000x
This is because for every 2 minutes that go by (i.e. for every increase of x by 1), the balloon rises by 2000ft (i.e. a constant rate of change). So, the equation y = 2000x represents a straight line with a slope (rate of change) of 2000, passing through the origin.
Find the value of X.
Answers
150 degrees is the measure of the angle x from the figure
Measuring the measure of angle in a circleThe given diagram is a circle and the angle x and 30 degrees can be seen to be on a straight line.
The sum of the measure of angle on a straight line is 180 degrees, hence:
x + 130 = 180
Subtract 130 degrees from both sides to have:
x + 30 - 30 = 180 - 30
x = 180 - 30
x = 150 degrees
Hence the measure of the angle x from the given equation is 150 degrees
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The figure below is a net for a square pyramid. What is the surface area of the square pyramid, in square inches?
Answers
Answer:
183.89
Step-by-step explanation:
S = square area + area of 4 triangles =
7.1^2 + 4*0.5*9.4*7.1 = 183.89
Answer: your answer is 266.44 square inches
Explanation: Triangles:
6.1x7.6=46.36in
Each triangle is 46.36in
46.36x4=185.44in
Rectangle:
9x9=81in
The rectangle is 81in
All together:
185.44+81=266.44in
So the square is the easiest do 4×4=16
The triangles its just Base×Height/2 in that order so 4×3=12/2=6
Mulitply 6 by 4 because there's 4 triangles and add 16 so 6×4=24+16=40
Hope this helped:)
HELPPP MEEE PLEASEE WITH THIS QUESTION
Answers
The values of x and y are given as follows:
x = 18.[tex]y = 6\sqrt{10}[/tex]What is the geometric mean theorem?The geometric mean theorem states that the length of the altitude drawn from the right angle of a triangle to its hypotenuse is equal to the geometric mean of the lengths of the segments formed on the hypotenuse.
The bases for this problem are given as follows:
2 and x.
The altitude is given as follows:
6.
Hence the length x is given as follows:
2x = 6²
2x = 36
x = 18.
Applying the Pythagorean Theorem, the length y is given as follows:
y² = 18² + 6²
y² = 360
[tex]y = \sqrt{36 \times 10}[/tex]
[tex]y = 6\sqrt{10}[/tex]
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Remove the parentheses from the following expression, and combine like terms: 4(ab²+1/₂c + x) - 2(c+x) A. 4ab² + 2x B. 4ab2 + 2x + C C. 4+abc2 + 2x D. 2ab²+2c + X
Answers
Answer:
A. 4ab² + 2x
Step-by-step explanation:
If you want to get rid of those pesky parentheses, you have to use the superpower of distributive property. It lets you multiply everything inside the parentheses by the number outside. For example:
4(ab²+1/₂c + x) = 4ab² + 2c + 4x
Boom! No more parentheses!
To combine like terms, you have to add or subtract the numbers in front of the terms that have the same variable and exponent. For example:
2x - 4x = -2x
Bam! Only one x left!
Here are the steps to simplify the expression:
4(ab²+1/₂c + x) - 2(c+x)
= 4ab² + 2c + 4x - 2c - 2x (use superpower)
= 4ab² + 4x - 2x (combine like terms)
= 4ab² + 2x (simplify)
So, the answer is A. 4ab² + 2x.
Can I have help solving this, or at least setting up the equation. Please and thank you, Due in 3 minutes (picture below)
Answers
The length of the midsegment of the trapezoid with bases 18 and 28 is gvien as follows:
23.
What is the trapezoid midsegment theorem?The trapezoid midsegment theorem, states that the length of the midsegment of the trapezoid is equals to the mean of the length of the bases of the trapezoid.
The bases of the trapezoid are given as follows:
18 and 28.
Hence the length of the midsegment of the trapezoid is given as follows:
(18 + 28)/2 = 23.
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Kamila wants a puppy. She and her family want to estimate the mean lifespan, in years, of all dog breeds registered with the American Kennel Association. Kamila selects a random sample of 8 registered dog breeds and looks up their estimated lifespan on the internet. The results are shown. 13 11 12 14 12 10 11 12 Part A What is the mean for Kamila’s sample? Round your answer to the nearest tenth. The mean lifespan for dogs from Kamila’s sample is years.
Answers
Rounding to the nearest tenth, the mean lifespan for Kamila's sample is 11.9 years.
To find the mean (average) for Kamila's sample, you need to sum up all the lifespans and then divide by the total number of breeds in the sample.
Sum of lifespans = 13 + 11 + 12 + 14 + 12 + 10 + 11 + 12 = 95
Total number of breeds = 8
Mean = Sum of lifespans / Total number of breeds
= 95 / 8 = 11.875
Rounding to the nearest tenth, the mean lifespan for Kamila's sample is 11.9 years.
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100 Points! Geometry question. Photo attached. Please show as much work as possible. Thank you!
Answers
The interior angles of the trapezium is as follows:
∠P = 80°∠L = 100°∠N = 70°∠M = 110°How to find the angle in a quadrilateral?The sum of interior angles in a quadrilateral is 360 degrees. Therefore, the diagram above is a trapezium with 4 sides.
Let's find the measure of each interior angles
2x + 2x + 20 + 2x - 10 + 3x - 10 = 360
9x = 360
divide both sides by 9
x = 360 / 9
x = 40
Therefore, each interior angles is as follows:
2x = 2(40) = 80 degrees
2x + 20 = 2(40) + 20 = 100 degrees
2x - 10 = 2(40) - 10 = 70 degrees
3x - 10 = 3(40) - 10 = 110 degrees
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There are 15 ushers and 9 technicians helping at the Harper Middle School fall play.
Answers
The ratio of technicians to all the helpers at the Harper Middle School fall play is 9 : 24.
What is the ratio of technicians to all the helpers at the Harper Middle School fall play?The ratio of technicians to all helpers can be calculated by dividing the number of technicians by the total number of helpers.
the ratio of technicians to all helpers = number of technicians/number of helpersNumber of technicians = 9
Total number of helpers = 15 ushers + 9 technicians = 24
The ratio of technicians to all helpers = 9 / 24
The ratio will then be:
The ratio of technicians to all helpers = 9 : 24
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Complete question:
There are 15 ushers and 9 technicians helping at the Harper Middle School fall play. What is the ratio of technicians to all helpers?
I want to buy a house in 4 years. I need a down payment of $50,000. How much do I need to have today in order to have a down payment, if I can earn 3%?
Answers
The formula to calculate the future value (FV) of an investment with compound interest is:
FV = PV * (1 + r)^n
Where:
FV = Future Value
PV = Present Value (initial investment)
r = Interest rate per period
n = Number of periods
In this case, you want to find the present value (PV), so we rearrange the formula:
PV = FV / (1 + r)^n
Plugging in the values:
FV = $50,000
r = 3% = 0.03
n = 4 years
PV = $50,000 / (1 + 0.03)^4
PV = $50,000 / (1.03)^4
PV = $50,000 / 1.1255
PV ≈ $44,444.44
Therefore, you would need to have approximately $44,444.44 today in order to have a down payment of $50,000 in 4 years, assuming an annual interest rate of 3%.
The area of the triangle below is 17.8cm^2.
work out the size of angle ∅, given that it is acute.
give your answer in degrees (°) to s.f.
Answers
Answer:
Set your calculator to Degree mode.
(1/2)(11.3)(5.2)(sin A) = 17.8
29.38sinA = 17.8
sin A = 890/1,469
A = sin^-1 (890/1,469) = 37.3°
Find (if possible) a. AB and b. BA.
A=
-
2
-
8
B=
||||
6
S
3
2
Answers
The products of the matrices A and B are [tex]AB = \left[\begin{array}{cc}-50 &7\\44 &-10\end{array}\right][/tex] and [tex]BA = \left[\begin{array}{cc}-12&-24 \\-16&-48\end{array}\right][/tex]
Finding the products of the matrices A and BFrom the question, we have the following parameters that can be used in our computation:
Matrix A = [tex]\left[\begin{array}{cc}-3&-8\\2&8\end{array}\right][/tex]
Matrix B = [tex]\left[\begin{array}{cc}6&3\\4&-2\end{array}\right][/tex]
Using the above as a guide, we have the following:
[tex]AB = \left[\begin{array}{cc}-3 * 6 + -8 * 4 &-3 * 3 -8 * -2\\2 * 6 + 8 * 4 &2 * 3 + 8 * -2\end{array}\right][/tex]
Evaluate
[tex]AB = \left[\begin{array}{cc}-50 &7\\44 &-10\end{array}\right][/tex]
Next, we have
[tex]BA = \left[\begin{array}{cc}6 * -3 + 3 * 2&6 * -8 + 3 * 8 \\4 * -3 + -2 * 2&4 * -8 + -2 * 8\end{array}\right][/tex]
Evaluate
[tex]BA = \left[\begin{array}{cc}-12&-24 \\-16&-48\end{array}\right][/tex]
Hence, the values are [tex]AB = \left[\begin{array}{cc}-50 &7\\44 &-10\end{array}\right][/tex] and [tex]BA = \left[\begin{array}{cc}-12&-24 \\-16&-48\end{array}\right][/tex]
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Multiply: (Hint - use one of the formulas)
(s - 3)³
Answers
The multiplication of the expression (s - 3)³ is determined as s³ - 9s³ + 27s - 27.
What is the product of the expression?The product of the expression given as (s - 3)³ is calculated as follows;
The given expression;
(s - 3)³, this can also be written as;
(s - 3)³ = (s - 3) (s - 3) x (s - 3)
We will simplify the expression as follows;
(s - 3)(s - 3) x (s - 3)
= (s - 3)(s - 3) x (s - 3)
= (s² - 3s -3s + 9 )(s - 3)
= ( s² - 6s + 9 ) (s - 3)
= s³ - 3s² - 6s² + 18s + 9s - 27
= s³ - 9s³ + 27s - 27
Thus, the given expression can be simplified using binomial theorem or using simple multiplication method as shown above.
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Find the constant of variation for the relation and use it to write an equation for the statement. Then solve the equation.
If y varies inversely as the square of x, and y
a.
b.
5
-—; y(5) -
y-
125
7x²y(5) = 4
175
48
63
when x-3, find y when x = 5.
C.
d.
y=
7
4x²
(5) - 7
100
y = - 52+ (5)
5x²
125
Answers
a. The constant of variation is k = 45.
b. The equation for the relation is y = 45/x².
c. x = 5, y is approximately equal to 1.8.
d. The equation provided, y = -52 + (5)/(5x²), seems to be incorrect or incomplete as there are misplaced parentheses and missing values.
The constant of variation for the relation "y varies inversely as the square of x," we can use the general form of an inverse variation equation:
y = k/x², where k represents the constant of variation.
The given information, we have y = 5 when x = -3.
Substituting these values into the equation, we get:
5 = k/(-3)²
5 = k/9
k = 45
The constant of variation is k = 45.
The equation for the relation is y = 45/x².
To find y when x = 5, we can substitute the value of x into the equation:
y = 45/(5)²
y = 45/25
y = 1.8
x = 5, y is approximately equal to 1.8.
The equation provided, y = -52 + (5)/(5x²), seems to be incorrect or incomplete as there are misplaced parentheses and missing values. Please clarify the equation and I'll be happy to assist you further.
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N
50°
AOMN~ ARPQ
Find 0.
M
Ө
0 = [?]°
<
P
70°
R
Answers
Answer:
60°
Step-by-step explanation:
In similar triangles, the corresponding angles are congruent.
∠O = R
O = 70°
In ΔOMN,
∠O + ∠M + ∠N = 180 {Angle sum property of triangle}
70 + 50 + Ф = 180
120 + Ф = 180
Subtract 120 from both sides,
Ф = 180 - 120
Ф = 60°
Help I don’t know this answer
Answers
Answer:
15*8*10-7*8*11=584
Step-by-step explanation:
A 9-foot roll of plastic wrap costs $1.08. What is the price per inch?
Answers
The price per inch of the wrap is $0.01 or 100cent
What is word problem?A word problem in math is a math question written as one sentence or more. This statements are interpreted into mathematical equation or expression.
For example, If the age of Roy is x what will be his age in five years time.
His age five years time will be x+5
9 foot roll cost $1.08
1 foot = 12 inches
9 feet = 9 × 12
= 108 inches
Therefore 108 inches = 1.08
1 inch = 1.08/108
= $0.01
= 100cents
therefore the price of the wrap per inch is $0.01 or 100 cent.
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SOMEONE HELP 45 POINTS!!!!!! WILL GIVE BRAINLIEST!!!!!! PLEASE
RIGHT ANSWER ONLY
If f(x) = 2x + 1 and g(x) = x − 2, find the quantity f divided by g of 7.
3
10
15
75
Answers
Answer:
3
Step-by-step explanation:
Step 1: First, we must plug in 7 for x in f(x) and g(x):
f(7) = 2(7) + 1
f(7) = 14 + 1
f(7) = 15
g(7) = 7-2
g(7) = 5
Now, we can divide f(7) by g(7)
f(7) / g(7) = 15 / 5
f(7) / g(7) = 3
Thus, the quantity of f divided by g of 7 is 3
What numbers are missing from the pattern below? Enter your answer, using
a comma to separate each number.
57, 53, 49, 45, ?, ?, ?, ?, 25, 21, 17, 13
Answer here
Answers
The numbers that are missing from the pattern are 41, 37, 33, and 29
How to determine the numbers that are missing from the patternFrom the question, we have the following parameters that can be used in our computation:
57, 53, 49, 45, ?, ?, ?, ?, 25, 21, 17, 13
The above pattern is an arithmetic pattern that has the following features
First term = 57
Common difference = 4
using the above as a guide, we have the following:
Next term = 45 - 4 = 41
Next term = 41 - 4 = 37
Next term = 37 - 4 = 33
Next term = 33 - 4 = 29
Hence, the numbers that are missing from the pattern are 41, 37, 33, and 29
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Help Quickly! Find the slope of the line.
A. -1/3
B. -3
C. 3
D. 1/3
Answers
Determine the solutions of a 2x2 system of linear equations given the augmented matrix representation
| 1 5 0 |
| 0 0 0 |
Answers
The general format of the solution to the system of equations in this problem is given as follows:
(x, -1/5x).
How to solve the system of equations?Considering the augmented matrix for the system, the system of equations in the context of this problem is defined as follows:
x + 5y = 0.0x + 0y = 0.The second equation is true for any ordered pair (x,y), hence the system has an infinite number of solutions.
The infinite number of solutions has the format given as follows:
x + 5y = 0
5y = -x
y = -x/5.
Hence the ordered pair is:
(x, -1/5x).
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A university professor and his students did a study to determine the mean length of bass in a lake. Each time a bass was caught, its length was measured in inches, and then it was released. The distribution of the lengths is shown in the graph below.
image
Based on this graph, which measurement represents the BEST estimate for the mean length of bass in the lake?
Answers
Based on this graph, a measurement which represent the best estimate for the mean length of bass in the lake include the following: 17 inches.
What is a mean?In Mathematics and Statistics, a mean is sometimes referred to as an average and it can be defined as a ratio of the sum of the total number in a data set (population) to the frequency of the data set.
Mathematically, the mean of a data set can be calculated by using the following formula:
Mean = [F(x)]/n
By critically observing the graph (histogram) shown in the image attached below, we can logically deduce that the distribution is symmetrical. This ultimately implies that, the mean length of bass in the lake would be in the middle, with an estimated value of 17 inches.
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Missing information:
The question is incomplete and the complete question is shown in the attached picture.
Complete Question:
A university professor and his students did a study to determine the mean length of bass in a lake. Each time a bass was caught, its length was measured in inches, and then it was released. The distribution of the lengths is shown in the graph below. Based on this graph, which measurement represents the best estimate for the mean length of bass in the lake?
12 inches
17 inches
20 inches
23 inches
Hi. Could someone please help me with this !!
Answers
Answer:
The slope is 5.
Hope this helps!
Step-by-step explanation:
( x, y )
( 6, 50 ) and ( 12, 80 )
[tex]\frac{80-50}{12 - 6} < = \frac{y_{2} -y_{1} }{x_{2}-x_{1} }[/tex]
[tex]\frac{30}{6} = \frac{5}{1} = 5[/tex]
The slope is 5.
Y varies directly as x, and y=9 when x = 27
Answers
If y varies directly as x, when x = 15, the value of y is equal to 5.
If y varies directly as x, we can express this relationship using the formula y = kx, where k is the constant of proportionality.
Given that y = 9 when x = 27, we can substitute these values into the equation:
9 = k x 27
To solve for k, we divide both sides of the equation by 27:
k = 9 / 27
k = 1/3
Now that we know the value of k, we can use it to find y for any other value of x.
Let's find y when x = 15:
y = (1/3) x 15
y = 5
Therefore, when x = 15, y is equal to 5.
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The complete question:
Y varies directly as x, and y=9 when x = 27.
Find the value of y, when x =15.
PLEASE HELP
Question 7 (5 points)
60°
a
30°
The triangle above has the following measures.
=10 yd
b=10√3 yd
Use the 30-60-90 Triangle Theorem to find the
length of the hypotenuse. Include correct units
Show all your work
Answers
100 + 300 = C^2
Sqrt(400) = 20
100 Points! Algebra question. Photo attached. Find the exact value of the expression. Please show as much work as possible. Thank you!
Answers
The required exact value of cos(-10π/3) or cos(2π/3) is -1/2.
To find the exact value of the expression cos(-10π/3), we can use the periodicity and symmetry properties of the cosine function.
In this case, we have cos(-10π/3). Since -10π/3 is equivalent to 2π/3 radians (because it completes a full revolution plus an additional 2π), we can rewrite the expression as cos(2π/3).
Now, let's find the exact value of cos(2π/3).
In the unit circle, an angle of 2π/3 (or 120 degrees) is located in the second quadrant. In the second quadrant, the x-coordinate is negative.
Since the cosine function gives the x-coordinate of a point on the unit circle, we can conclude that cos(2π/3) is negative.
Therefore, the exact value of cos(-10π/3) or cos(2π/3) is -1/2.
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Graph by completing the square x2-4x+y2-2y-4=0
Answers
The graph will look like a circle centered at (2, 1) with radius 3.
To graph the equation [tex]x^2 - 4x + y^2 - 2y - 4 = 0[/tex] by completing the square, we need to rearrange the terms as follows:
[tex](x^2 - 4x + 4) + (y^2 - 2y + 1) = 9[/tex]
This can be simplified to:
[tex](x - 2)^2 + (y - 1)^2 = 3^2[/tex]
So the equation represents a circle with a center at (2, 1) and a radius 3. To graph the circle, we can plot the center point (2, 1) and then draw a circle with radius 3 around that point.
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