Answer:
The answer is 5 hours
Step-by-step explanation:
12 students play on the schools basketball team 36 students play on the football team.what is the ratio of basketball players to football players
Rewrite each expression as a single power of 10
The solution using laws of exponents are;
A) 10⁻⁵
B) 10³
C) 10⁻²
D) 10⁻²⁰
E) 10⁻¹
F) 10⁻¹⁴
How to use laws of exponents?Some of the laws of exponents are;
1) Product of powers rule:
When multiplying two bases with the same value, keep the bases the same and then add the exponents together to get the solution
2) Quotient of powers rule; When trying to divide two bases of the same value, keep the base the same, and then subtract the exponent values.
3) Power of a power rule; This rule tells how to solve equations where a power is being raised by another power.
4) Power of a product rule; Whenever any base is being multiplied by an exponent, then we distribute the exponent to each part of the base.
A) 10⁻³ × 10⁻²
= 10⁻³⁻²
= 10⁻⁵
B) 10⁴ × 10⁻¹
= 10⁴⁻¹
= 10³
C) 10⁵/10⁷
= 10⁵⁻⁷
= 10⁻²
D) (10⁻⁴)⁵
= 10⁻⁴*⁵
= 10⁻²⁰
E) 10⁻³ × 10²
= 10⁻³⁺²
= 10⁻¹
F) 10⁻⁹/10⁵
= 10⁻⁹⁻⁵
= 10⁻¹⁴
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HELLPPPP ME RIGHT AWAY PLEASE?
Answer: 3 = 12 , 4 = 2 , 2 = 22
Step-by-step explanation: Since t represents the number of tickets purchased, we need to plug that into our equation.
d = -10t + 42
d = -10(3) + 42
We know that d is the balance of the bank account, so if we plug in the number of tickets purchased, we will solve to get the balance of the bank account.
d = -10(3) + 42
d = -30 + 42
d = 12
In this equation, If we purchase 3 tickets, the balance of the bank account would be 12 dollars.
Let's do the last 2 equations using d = -10t + 42.
d = -10(4) + 42
d = -40 + 42
d = 2
In this equation, If we purchase 4 tickets, the balance of the bank account would be 2 dollars.
d = -10(2) + 42
d = -20 + 42
d = 22
In this equation, If we purchase 2 tickets, the balance of the bank account would be 22 dollars.
Draw a histogram for each data set.
4) Age at First Job
17 15 16 16 13 18 16 17 18 17 14 16 18 22 15 16
The histogram for the data-set in this problem is given by the image presented at the end of the answer.
How to draw the histogram?The histogram of a data-set shows the number of times that each item was observed in the data-set.
For this problem, we have that:
4 observations were between 13 and 16.11 observations were between 16 and 19.0 observations were between 19 and 22. 1 observation was between 22 and 25.Hence the histogram is given by the image at the end of the answer.
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what is the diameter of the semi circle whose perimeter is 54
Perimeter of a semi circle = ñr + d(2r),ñ=22/7,r=?, d=2r
54=22/7 × r +2r
54=3.142r +2r
54=5.142r
r=54/5.142
r=10.5
d=2r
d=2×10.5017
d=21.00cm
Last year, wind turbines along a hilly ridge had an average output of 340 kilowatt hours per year. The turbines were upgraded, and now their average annual output is 90% more. What is the new average yearly output
The required new average is 646-kilowatt hours per year,
What is the percentage?The percentage is the ratio of the composition of matter to the overall composition of matter multiplied by 100.
here,
Last year, wind turbines along a hilly ridge had an average output of 340-kilowatt hours per year. The turbines were upgraded, and now their average annual output is 90% more.
So,
new average = 340 + 90% of 340
new average = 340 + 0.90 × 340
new average = 340 + 306 = 646 kilowatt hours per year,
Thus, the required new average is 646-kilowatt hours per year,
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How many times would you expect to roll a 5 if you rolled a fair die 300 times? Round your answer, if needed.
A.
0.167
B.
50
C.
17
D.
33
The number of times you would expect to roll a 5 if you rolled a fair die 300 times is B. 50.
We should note that that a fair die has a six sided cube and the number that is on the die faces start from 1 to 6 .
Since each of the die faces consists of a probability of 1/6 now let find the number of times to roll a die.
Expected number of times = 300 × 1/6
Expected number of times = 50
Therefore we can conclude that the expected number of time to rolled the die is B. 50 times.
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How do you find the equation of the line of best fit?
A line of best fit can be described by the equation y=mx+b, where m denotes the slope and b the y-intercept. For a better understanding of the idea of approximating the equation of a line of best fit and making predictions, we will look at two examples that show a scatter plot with a line of best fit.
What is a line, exactly?
Having only length and no width, a line is a one-dimensional figure. A line is created from a collection of points that are endlessly stretched in the opposing directions.
A two-dimensional plane's two points serve as its determining factors. Collinear points are two points that are located on the same line.
What is the equation for a straight line?
. A straight line has the equation y=mx+c, where c is the height at which the line crosses the y-axis, also known as the y-intercept, and m is the gradient.
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How do you describe the end behavior of the graph if the degree is odd and the leading coefficient is positive?
The end behavior of a graph with an odd degree and a positive leading coefficient is that the graph will tend to increase infinity as x approaches positive infinity and decrease to negative infinity as x approaches negative infinity.
This end behavior of a graph is due to the fact that when the degree is odd, the leading coefficient acts as a multiplier for the highest degree term, making its contribution to the graph’s y-value the largest and most dominant. For example, if the equation of the graph is y = 4x^3 + x^2 – 7x + 5, then the end behavior of the graph will be increasing to positive infinity as x approaches positive infinity and decreasing to negative infinity as x approaches negative infinity. To calculate this, we can use the equation y = 4x^3. When x = 1000, y = 4,000,000,000. As x increases, y will continue to increase to positive infinity. When x = -1000, y = -4,000,000,000. As x decreases, y will continue to decrease to negative infinity.
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Use the long division method to find the result when 2x³+4x2 + 7x + 5 is divided
by x + 1.
Solving the provided question, we can say that the quadratic equation 2x³+4x2 + 7x + 5 is divided by (x+1) = -2+4-7+5 = 0
What is quadratic equation?A quadratic equation is x ax2+bx+c=0, which is a quadratic polynomial in a single variable. a 0. The Fundamental Theorem of Algebra ensures that it has at least one solution since this polynomial is of second order. Solutions may be simple or complicated. An equation that is quadratic is a quadratic equation. This indicates that it has at least one word that has to be squared. The formula "ax2 + bx + c = 0" is one of the often used solutions for quadratic equations. where are numerical coefficients or constants a, b, and c. where the variable "X" is unidentified.
the quadratic equation
2x³+4x2 + 7x + 5 is divided by (x+1)
which means X+1 is factor
so, x = -1
2x³+4x2 + 7x + 5 = -2+4-7+5 = 0
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which quadrant does the point (2, 3) lie?A I B IIC III D III
The quadrant of the given point (2,3) is given A I ( that is first quadrant ).
As given in the question,
Given point is equal to :
Point ( 2, 3 )
Conditions of the quadrant in the coordinate plane is given by :
Let ( x ,y ) be the coordinates in the coordinate plane.
In the first quadrant : ( x , y ) both x and y are positive.
In the second quadrant : ( -x , y ) x is negative and y is positive.
In the third quadrant : ( -x , -y ) x is negative and y is negative.
In the fourth quadrant : ( x , -y ) x is positive and y is negative.
Here in the given point ( 2,3 ) both x and y are positive.
Given point lies in the first quadrant.
Therefore, the quadrant of the given point (2,3) is equal to A I ( that is first quadrant ).
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8-2 practice multiplying a polynomial by a monomial
Find each product
1. x(5x + x^2)
2. x(4x^2 + 3x + 2)
Answer:
Skills Practice. Multiplying a Polynomial by a Monomial. Find each product. 1. a(4a + 3). 2. -c(11c + 4). 4a2 + 3a. -11c2 - 4c. 3. x(2x - 5). 4. 2y( y - 4).
Step-by-step explanation:
Which expression is equivalent to the given expression?
A.
B.
C.
D.
Answer:
I believe the answer is D
Answer:
D. (2x +1)(x -6)
Step-by-step explanation:
You want the expression that is equivalent to 2x² -11x -6.
ChoicesThere are a couple of ways to go at this. One way is to eliminate the answers that make no sense: A and C. We say these are nonsense because they have an overall factor of 2. The coefficient -11 is not a multiple of 2, so there cannot be such a factor.
If you were to examine the remaining choices (after eliminating A and C), you would find the x-term of the product to be ...
B: 2x(-2) +3(x) = -4x +3x = -x
D: 2x(-6) +1x = -12x +x = -11x . . . . . the expression we're looking for
FactorsIf you were to factor this equation, you would look for factors of 2·(-6) = -12 that have a sum of -11. Of course, those are -12 and 1. This means we can rewrite the equation as ...
2x² -11x -6 = 2x² -12x +x -6
= 2x(x -6) +1(x -6) . . . . . . . factor by grouping (pairs of terms)
= (2x +1)(x -6) . . . . . . . . . . matches choice D.
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In Problems 15-18, write each relation as a set of ordered pairs. Then
identify the domain and the range of the relation. See Objectives 1
and 2.
15.
Newspaper
USA Today
Wall Street Journal
New York
Daily Circulation
(in millions)
2.28
2.06
1.1
Los Angeles Times
0.82
Washington Post
0.70
SOURCE: Information Please Almanac
Times
Times
On solving the provided question, we can say that the domain of the following data will be domains = [ (( 2.28 , 2.06) to ( 1.18 , 0.70) ] and [ (( 9 , 11) to ( 11 , 17) ]
what is domain?The domain of a function is the set of possible values that it can accept. The x-values of a function like f are represented by these integers (x). A function's domain is the set of possible values on which it can be used. This set is the value that the function returns after the insertion of the x value. Y = f is the definition of a function with x as the independent variable and y as the dependent variable (x). A value of x is said to be in a function's domain if it can be successfully utilised to produce a single value of y by using the value of x.
the domain of the following data will be
domains = [ (( 2.28 , 2.06) to ( 1.18 , 0.70) ]
domains = [ (( 9 , 11) to ( 11 , 17) ]
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Is it true that the square root of a sum is equal to the sum of the square roots?
A number's square root multiplied by another number's square root does not always equal the total of these two numbers' square roots.
Why is it called sum of squares?A statistical method called the sum of squares (SS) is used in regression analysis to determine how well the data can fit the model and how dispersed the data are. Since it is determined by adding up the squared differences, the sum of squares is how it is calculated.
A sum's square is equal to the product of its summands' squares and its double products' sums of summands in twos.
So, it is not always true that the square root of a sum is equal to the sum of the square roots.
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A number's square root multiplied by another number's square root does not always equal the total of these two numbers' square roots.
Why is it called sum of squares?In regression analysis, the sum of squares (SS), a statistical technique, is used to assess how well the data fit the model and how distributed they are. The sum of squares is used to compute it as it is obtained by combining together the squared differences.
The product of a sum's square and its double products' sums of its summands in twos is known as the summands' square. Hence, the square root of such a sum is not necessarily equal to the total of the square roots.
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Brooo this is sooo hard please helpppo
Answer:
Step-by-step explanation:
divided by nine ;)
What is double prime called?
Double prime is called by different names as per the topics used in Mathematics :
Inches in length , second order derivative in differentiation, conjugate points, transformed coordinates etc.
As given in the question,
In Mathematics double prime is represented by ". Double prime is used to represent different types of function as per the topic.Double prime is used to represent the second derivative of the given function in differentiation.Double prime is used to represent the measure of length in inches.Double prime is also used to represent the transformed coordinates in the coordinate geometry.Sometimes double prime also represents the conjugate points.It also represents the number of arc seconds in the measure of any angle.Therefore, the double prime is known by many names such as inches in length, second order derivative, conjugate points, transformed coordinates etc.
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Help me find the value of Y!
ABCD is an isosceles trapezoid with legs AB and CD and base BC. If the length of AB is 7y-4, the length of BC is 4y-6, and the length of CD is 8y-18, find the value of y.
I know 2 lengths are equal and I know algebra but I just don't know where to start. Please explain it. Sorry there's no diagram
======================================================
Explanation:
You are correct in thinking you'll set two things equal to one another. This type of thing happens often in algebra. The question you probably have is: what two things do I set equal?
The key term is "isosceles" which tells us we have two non-parallel sides equal in this trapezoid. In other words, we ignore the parallel sides.
The non-parallel sides of a trapezoid are known as the legs.
The legs in this case are
AB = 7y-4CD = 8y-18Set those expressions equal to one another and solve for the variable y.
AB = CD
7y-4 = 8y-18
-4+18 = 8y-7y
14 = y
y = 14 is the final answer
----------------------
Check:
AB = 7y-4 = 7*14-4 = 98-4 = 94CD = 8y-18 = 8*14-18 = 112-18 = 94Both legs AB and CD are 94 units long to confirm this trapezoid is indeed isosceles. The answer is confirmed.
Side note: as mentioned earlier, we completely ignore BC = 4y-6. It was probably put in there as a distraction.
The area of the curved surface of a cylindrical jar is 1,584 square centimeters. The height of the jar is 28 centimeters. a) What is the circumference of the jar? b) What is the radius of the jar?
please help this is due soon
The circumference of the jar is 56.57cm.
The radius of the jar is 9 cm.
What is the circumference of the jar?A cylinder is a three-dimensional object. It is a prism with a circular base.
The curved surface area of a cylinder = 2πrh
Where:
π = 3.14r = h = 281584 = 2 x 3.14 x 28 x r
r = 1584 / (2 x 3.14 x 28)
r = 9 cm
Circumference = 3.14 x diameter
diameter = 2 x radius
3.14 x 2 x 9 = 56.57cm
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How many solutions does -3=2x²-8x+8 have
The quadratic equation has two solutions, x1 = 3.44 and x2 = 0.56
What are Quadratic equations?Quadratic equations are the ones with degree 2. The standard form of a quadratic equation with variable x is ax2 + bx + c = 0, where a ≠ 0. These equations can be solved by splitting the factorisation, completing the square, or by quadratic formula method.
2x²-8x+8 = -3
2x²-8x+8+3 = 0
2x²-8x+11=0
Using the quadratic formula
x = (- b ± √(b² - 4ac)) / 2a
where a = 2
b = -8
c = 11
x = (-(-8) ± √(11² - 4(2)(11))) / 2(2)
x = (8 ± √(121 - 88)) / 4
x = (8 ± √(33))/4
x 1 = (8 + √(33))/4
x1 = (8 + √(33))/4
x1 = (8 + 5.75)/4
x1 = 13.75 / 4
x1 = 3.44
x2 = (8 - √(33))/4
x2 = (8 - 5.75)/4
x2 = 2.25/4
x2 = 0.56
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Use the data to complete this statement. Any non-integer answers should be entered as decimals, rounded to the tenths place. The mean of the data set is , and the sample proportion of numbers less than the mean is %.
The mean of the given data set is 21.7 and the sample proportion of numbers less than the mean is 60%.
Consider the given data set (in the image attached to this answer). We have to find the mean of the data set is, and the sample proportion of numbers. We have been told that any non-integer answers should be entered as decimals, rounded to the tenth place. The means is the average of any data set.
Here, mean = (20.5 +24.2 +18.3 + 1.3 +27+25.5 +21+19.8+27.3+18·4 + 20.5+17-6 +25.5 +23.4 +20.2)/15
Mean = 325.5/15 =21.7
The sample proportion of numbers less than
Mean = 9/100 * 15 %
Answer: 21.7 60%
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write 1.1% as a decimal number
Answer:
0.011
Step-by-step explanation:
To convert a percentage into a decimal, simply divide by 100;
Some examples are:
1% = 0.01
5% = 0.05
10% = 0.1
50% = 0.5
N.B. finding a percentage of a number is multiplying by the decimal form, so, e.g. 1.1% of 1000 is:
1000 × 0.011 = 11
Answer:
0.011
Step-by-step explanation:
To convert a percentage to a decimal, you must divide the percentage by the number 100.
Therefore, 1.1% / 100 = 0.011.
(If the question was the other way around and you wanted to turn a decimal into a percentage. All you have to do is the opposite. When you have a decimal multiply it by 100 to get a percentage.)
Hope this helped you!
PLSSS HELP IF YOU TURLY KNOW THISS
Answer:
4
Step-by-step explanation:
For this question, the x represent the question mark.
8 + (-4) = x
Since positive plus negative equals negative, we subtract.
8 - 4 = x
x = 4
Write down a quadratic equation in the form $x^2 + bx + c = 0$ whose solutions are $x = -7$ and $x = 1. $.
Answer:
an average weight of 10student was calculated to be 75. later it was discovered thatone weight wss insread as 35 instead of 50k.g. calculate the correct average weight
what number should be added to 8000 to make it a perfect square
Answer:
100 should be added as 8100 is square root of 90 ...
Solve for x and graph the solution on the number line below. x−9≤ −4
Answer: x ≤ 5
Step-by-step explanation:
x - 9 --> x + (-9)
-9 + 5 = -4
how many different digits are used in the hexadecimal number system?
Answer:16
Step-by-step explanation:
Breanna bikes 84 miles in 6 hours at a constant rate. The formula d = rt gives the relationship between distance (d), rate (r), and time (t). At what rate was Breanna biking?
Breanna was biking at a constant rate of 14 miles per hour.
What does rate means?A rate can be defined as the speed at which something happens or changes or the amount or number of times it happens or changes in a particular period.
The formula that describes the relationship between distance (d), rate (r), and time (t) is d = rt.
Now, we will solve for r. From d = rt. Our r will equals to:
= d/t.
Now we compute the rate at which Breanna was biking.
= 84 miles/6 hours
= 14.
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If f(x)=4-x^2 and g(x)=6, which expression is equal to (g-f)(3)
The value of the function (g - f)(x) = 6 - 4 + x² at x = 3 will be 11.
What is a function?A function is an assertion, concept, or principle that establishes an association between two variables. Functions may be found throughout mathematics and are essential for the development of significant links.
The functions are given below.
f(x) = 4 - x² and g(x) = 6
The function (g - f)(x) will be given as,
(g - f)(x) = 6 - 4 + x²
(g - f)(x) = 2 + x²
The value of the function (g - f)(x) at x = 3 will be give as,
(g - f)(x) = 2 + (3)²
(g - f)(x) = 2 + 9
(g - f)(x) = 11
The value of the function (g - f)(x) = 6 - 4 + x² at x = 3 will be 11.
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A movie studio keeps 240 dresses in its wardrobe for historical films. Three-fifths of them can be used for movies that take place in the 1700s and 15% of them can be used for movies in the civil war era.
What percent of the dresses are for films set in the 1700s or during the civil war era? Explain how you found your answer
The percent of the dresses that are for films set in the 1700s or during the civil war era is; 75%
How to find the percentage?Percentage is normally calculated by dividing the value by the total value, and then multiplying the result by 100. It is given by the expression; Percentage = (value / total value) * 100%
Now, we are told that;
Number of movie dresses kept = 240 dresses
Fraction used for movies that take place in the 1700s = 3/5
Percentage used for movies in the civil war era = 15%
Thus;
Number of dresses in the 1700 = 3/5 * 240 = 144
Number of dresses for the civil era = 15% * 240 = 36
Thus;
Total for civil era and in the 1700s = 144 + 36 = 180
Thus;
Percentage for either period = 180/240 * 100% = 75%
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