Answer:
B. Kendra should have divided by 2 instead of multiplying by 2 in the denominator.
Step-by-step explanation:
In Kendra’s class, 40 percent of the students earned an A on the math test.
Let the total students in the class be = x
So, as per the situation given, we can say that
[tex]0.40\times x=20[/tex]
x = 50
Hence, there are 50 students in the class.
We can cross check this as:
[tex]0.4\times50=20[/tex]
So, Kendra surely did a mistake.
Kendra should have divided 100 by 2. But she multiplied by 2.
Please help......
1. Write an approximate equation of the line of best fit in slope-intercept form.
2. Use the equation from part B to predict the resting heart rate of a person who exercises 30 minutes per day. Show your work.
3. Explain how you found your answer to part C.
Plzz help me im giving 12 points
give the length and width in whole inches of three different rectangles that each have an area of 48 in. squared
I was sick the day that the class went over how to do this and I don’t know how to do it.
The owner of a bookstore predicts that 30% of the books she sells each week are self-help books. To test this prediction, the owner randomly selects 150 books out of the total number of books sold for a week and records the type of each book. The table shows the results of samples taken for 2 separate weeks. Sample Fiction History Cooking Self-help Total week 1 50 29 37 34 150 week 2 55 31 34 30 150 Based on these samples, is the owner's prediction correct? Select from the drop-down menus to correctly answer the question. The owner's prediction is . Based on the samples, about of the books sold each week are self-help books.
Based on the samples, the owner's prediction of 30% is not correct; approximately 21.34% of the books sold each week are self-help books.
The bookstore owner predicts that 30% of the week's book sales are self-help books. To evaluate this prediction, we need to look at the number of self-help books sold in the samples provided for two separate weeks. In week 1, 34 out of 150 books sold were self-help books, which is 22.67%. In week 2, 30 out of 150 books sold were self-help books, which is 20%. To determine the average percentage of self-help books sold over the two weeks, we average these two percentages: (22.67% + 20%) / 2, which gives us 21.34%.
It says in abc, What is m
How can we get the answer for...Decrease £8 by 20%
What is the volume of the triangular prism ?
The volume of the rectangular pyramid is 640 cm³.
What is the volume of a pyramid?The volume of a pyramid is [tex]\frac{1}{3} Ah[/tex] where A is the area of the base of the pyramid and h is the height.
Area of the base = area of a rectangle with dimensions 12cm*10cm
Area of the base =12*10 =120 cm²
Height of the pyramid =16cm
So, the volume of the pyramid = [tex]\frac{1}{3}*120*16[/tex] cm³
The volume of the pyramid =640 cm³
Hence, the volume of the rectangular pyramid is 640 cm³.
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A prism is filled with 44 cubes with 1/2 units side lengths. What is the volume of the prism in cubic units?
A circle has an area of 19 5/8 square units what is the radius of the circle
My grade is a 77%, if i get a 0% on a paper worth 30% of my grade, what will my grade be now??
dividing whole numbers 22 divided by 300
Answer:
22 divided by 300 will be equal to 0.07333.
Step-by-step explanation:
Dividing 22 by 300
[tex]\frac{22}{300}=\frac{2\times 11}{2\times 2\times 5\times 5\times 3}[/tex]
[tex]\frac{22}{300}=\frac{11}{2\times 5\times 5\times 3}=\frac{11}{150}[/tex]
[tex]\frac{11}{150}=\frac{11}{15}\times \frac{1}{10}[/tex]
The value of [tex]\frac{11}{15}=0.7333[/tex]
[tex]\frac{22}{300}=\frac{11}{150}=0.7333\times \frac{1}{10}=0.07333[/tex]
So, the value of 22 divided by 300 will be equal to 0.07333.
Dividing 22 by 300 gives a quotient of 0.0733, representing the proportion of 22 out of 300.
Explanation:To perform the division of the whole numbers 22 and 300, you simply divide 22 by 300 using long division or a calculator. However, since 300 is larger than 22, the result will be a decimal or fraction that is less than 1. Mathematically represented as:
22 ÷ 300 = 0.0733
In a real-world scenario, this number could be interpreted as the proportion or percentage of a whole that the number 22 represents out of 300.
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Through music we can communicate more then what can be expressed with words alone
True or false
the goalie ate half of a pizza that had a diameter of 20 inches! what was the area of pizza that she ate? what was the length of crust she ate?
When two six-sided dice are rolled, there are 36 possible outcomes.
a. Find the probability that the sum is not 4. Express your first answer as a fraction in simplest form, and round your percent answer to the nearest whole percent.
b. Find the probability that the sum is greater than 5. Express your first answer as a fraction in simplest form, and round your percent answer to the nearest whole percent.
The probability that the sum of two six-sided dice is not 4 is 11/12 or 92%. The probability that the sum is greater than 5 is 5/12 or 42%.
Explanation:The subject of this question is probability, which is a branch of mathematics. When two six-sided dice are rolled, there are indeed 36 possible outcomes.
There are three possible ways to get a sum of 4: (1,3), (2,2), and (3,1). So the probability that the sum is not 4 is 1 - (3/36) = 33/36. This simplifies down to 11/12, and as a percent it rounds to approximately 92%.
There are 15 different combinations that result in a sum that is greater than 5. So the probability is 15/36, which simplifies to 5/12. This roughly translates to 42% when expressed as a percentage.
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Which of the following is a characteristic of Euclidean geometry?
Answer:
c. the parallel postulate is true.
Step-by-step explanation:
Jamelia estimates the square root of 72 in the following way:
√72 = 2√36 = 2*6 = 12
(a) Explain why her reasoning is incorrect.
(b) Estimate the square root of 72 to the nearest tenth. Show your work.
How many pounds of peanuts will each person get if 3 people share 1/5 pounds of peanuts equally?
Can please help!
10. Write an inverse variation to model the situation and answer the question. Two rectangular fields have the same area. One measures 75 yd by 60 yd. If the other has a length of 72 yd, what is its width?. Show your work
13 percent of what is 78
Fernando poured water from one-pint bottles into a three-gallon bucket. How many pints of water could the bucket hold?
HELP NEEDED
Use the functions h(x) = 5x − 2 and t(x) = 4x + 6 to complete the function operations listed below.
Part A: Find (h + t)(x). Show your work.
Part B: Find (h ⋅ t)(x). Show your work.
Part C: Find h[t(x)]. Show your work.
Pint-Sized Portraits has 4 different backgrounds and 5 poses in which to photograph children. How many different pictures are there to choose from?
9
20
120
A diner has a breakfast special. A customer can chose scrambled, fried, or poached eggs. The breakfast comes with a side of bacon, sausage, or fruit salad. The customer can choose coffee, tea, or milk. How many different combinations of eggs, side, and drink does a customer have to choose from?
A diner has a breakfast special. A customer can chose scrambled, fried, or poached eggs. The breakfast comes with a side of bacon, sausage, or fruit salad. The customer can choose coffee, tea, or milk. How many different combinations of eggs, side, and drink does a customer have to choose from?
Solution:
Number of ways the customer can choose eggs=3
Number of ways the customer can choose side=3
Number of ways the customer can choose drinks=3
So, total number of combinations for choosing eggs and side and drinks
=3(for eggs) and 3(for sides) and 3(for drinks)
=3 * 3 *3
=27
A customer has 27 combinations of eggs, side, and drink available.
Suppose q and r are independent events, and P(Q)= 0.39, P(R)= 0.85. Find P(q and r)
Answer:
0.3315
Step-by-step explanation:
The mean of 3 consecutive terms in an arithmetic sequence is 10, and the mean of their squares is 394. What is the largest of the 3 terms?
Please help me with this!
A sample of 81 was taken from a population with a standard deviation of 45 kilograms. If the sample mean was 112 kilograms, the mean of any other sample of 81 will be within what range 99.7% of the time?
A. 97 kilograms to 127 kilograms
B. 102 kilograms to 122 kilograms
C. 92 kilograms to 132 kilograms
D. 107 kilograms to 117 kilograms
Jerome bought a book on sale at the store. The sale price of the book was $8.96. Write and solve an equation to determine the regular price of the book to the nearest cent
The regular price of the book is $8.96.
Explanation:To determine the regular price of the book, we can set up an equation using the sale price and the regular price. Let's say the regular price is 'x'.
So the equation becomes:
8.96 = x
To solve for 'x', we can simply state that the regular price of the book is $8.96.
Jill earned $40 from a carpool plus $9 per hour babysitting this week. Which of th following expression beat represents jill’s Income for the week?