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Umnica [9.8K]
3 years ago
8

the ratio of seniors to juniors in the math club is 2:3. If there are 21 juniors, how many seniors are in the club?

Mathematics
1 answer:
Bond [772]3 years ago
8 0

Answer:14

Step-by-step explanation:

1. Ratio : 2:3

2. Multiply the number of juniors by the Ratio

(2/3)(21)

3. Solve for answer

Answer: 14

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Convert 13 over 100 to a decimal
harina [27]
Solve:-

13 over 100 = 13/100

To turn a fraction to a decimal, divide numerator by denominator:- 

13 ÷ 100 = 0.13

13/100 as a decimal is 0.13.
8 0
3 years ago
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Suppose that shoe sizes of American women have a bell-shaped distribution with a mean of 8.47 and a standard deviation of 1.5. U
alex41 [277]

Answer:

2.5% of American women have shoe sizes that are greater than 11.47.

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 8.47

Standard deviation = 1.5

The normal distribution is symmetric, which means that half the measures are below the mean, and half are above the mean.

What percentage of American women have shoe sizes that are greater than 11.47?

11.47 = 8.47 + 2*1.5

This means that 11.47 is two standard deviations above the mean.

Of those measures below the mean, none are greater than 11.47.

Of those measures above the mean, 95% are between the mean and 11.47, and 5% are above. So

0.5*0.05 = 0.025

2.5% of American women have shoe sizes that are greater than 11.47.

8 0
3 years ago
A machine fills bags with sweets.
DIA [1.3K]

Answer:

19

Step-by-step explanation:

maximum no. of bag filled by 4275 sweets,is

4275/28 ~=152

therefore , there is 4256 sweets in 152 bags

therefore,4275-4256=19 sweets are left

6 0
3 years ago
A baker made 60 muffins for a cafe. By noon, 45% of muffins were sold. How many muffins were sold by noon?
Genrish500 [490]
27


60÷100 =0.6
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3 years ago
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Answer:

Student 2 used the correct steps to construct parallelogram PQRS.

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Out of all the students, student 2 got all the steps correct.

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Without changing the width of the compass, move the compass to R and draw an arc.

Draw a line segment from R that passes through T and intersects the second arc at S.

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3 years ago
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