MATHEMATICS
HIGH SCHOOL

B. 110

C. 310

D. 25

E. 12

Answer:

Answer:

D

Step-by-step explanation:

7+3+9+5=24

which is divisible by 3

so reqd. digit should be multiple of 3

multiples of 3 are 0,3,6,9

so probability=4/10=2/5

MIDDLE SCHOOL

2. Suppose you pay $21 for a pair of shoes that was originally $30. What was the percent of decrease in price for the shoes? Set up an equation, arrive at your answer, and check your work. Then clearly state your answer

30$ originally - 21$ paid = 9$ discount

> divide the discount by the original price, multiply by 100 to get the percent decrease.

100 x (9$ / 30$) = 30% discount

> So the shoes where on sale for 30% off the original price.

for the equation:

100 x (30-21)/30 = % decrease

> divide the discount by the original price, multiply by 100 to get the percent decrease.

100 x (9$ / 30$) = 30% discount

> So the shoes where on sale for 30% off the original price.

for the equation:

100 x (30-21)/30 = % decrease

MIDDLE SCHOOL

You walk 2 miles in 1/2 hour. at that rate how long will it take you to walk 3 miles

First, calculate for the rate at which you walk by dividing the distance by time in the first set of given. This gives us the rate of 4 miles/hour. To determine the time it takes to walk 3 miles, divide 3 by 4 which gives us 0.75 hours or 45 minutes.

Answer: 45 minutes

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MIDDLE SCHOOL

Find the median of the following data:

10,16, 15, 14, 8, 21, 10, 5, 19, 18, 4, 5, 16, 12, 10,9

Answer:

The median is 11.

Step-by-step explanation:

First arrange the data in ascending order:

4, 5, 5, 8, 9 , 10, 10, 10, 12, 14, 15, 16, 16, 18, 19, 21

There are 16 numbers so the median is the mean of the middle 2 numbers in the list. That is the mean of the 8th and ninth number.

Median = 10 + 12 / 2

= 11.

Answer:

answer is 12 ape x

Step-by-step explanation:

i am not sure why tho to be honest if a verified answer is 11

MIDDLE SCHOOL

Write 91.5% as a decimal

Answer:

0.915

Step-by-step explanation:

move the decimal two to the left and take a the percentage

Answer:

The answer is .915

Step-by-step explanation:

91.5/100 = .915

MIDDLE SCHOOL

John’s Smoothie Stand at Utah’s Wasatch County’s Demolition Derby sells bananas. If John bought 52 lbs. of bananas at $.28 per pound expecting 10% to spoil, how should he price his bananas to achieve a 59% markup on selling price? (Round your answer to the nearest cent.)

The sell price should be ; $20.84

Step-by-step explanation:

Total number of pounds bought= 52

Spoil percent is 10%

Pounds that remained after spoil= 90/100 * 52 = 46.8 lb

Price of banana per pound= $0.28

Cost of buying = 46.8*0.28 =$13.10

Mark up expected =59%

Increase $13.10 by 59%

=159/100 * 13.10 = $20.84

Learn More

Percent increase :brainly.com/question/2057448

Keywords : sells, bananas, spoil, mark up, selling price

#LearnwithBrainly

MIDDLE SCHOOL

What is 100(0.99988) rounded to the nearest tenth

Multiply first then round

HIGH SCHOOL

According to the law of large numbers, as more observations are added to the sample, the difference between the sample mean and the population mean _______. tends to become larger is inversely affected by the data added remains about the same tends to become smaller

Answer: tends to become smaller

Step-by-step explanation:

In statistics and probability , the law of large numbers says that as we increase the size of the sample, then the sample mean will get closer to the true value of population mean.

Therefore, the complete statement will be :

According to the law of large numbers, as more observations are added to the sample, the difference between the sample mean and the population mean tends to become smaller.

Where are the answers choices

MIDDLE SCHOOL

a math book is 1 and 1/2 inches thick. How many math books will fit on a shelf that is 2 feet long?

16 because 2 feet is 24 inches and 24 divided by 1.5 is 16

COLLEGE

Which price choice is the lowest price per ounce?(5 points) Choice A: 5 ounces of raisins for $1.49 Choice B: 12 ounces of raisins for $3.59

The cost of 5 ounces of raisins for $1.49 is 29.8 cents per ounce

The cost of 12 ounces of raisins for $3.59 is 29.91 cents per ounce.

Therefore, Choice A is the lowest price per ounce.

The cost of 12 ounces of raisins for $3.59 is 29.91 cents per ounce.

Therefore, Choice A is the lowest price per ounce.

Answer:

Your answer is A

Step-by-step explanation: