3 years ago

PLEASE HELP!!! 8th grade math

Mathematics

1 answer:

arlik [135]3 years ago

6 0

Your answer will be the last one

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A baking class had 45 students on Monday and only 32 students on Tuesday. What was the change in percent? (Round to the nearest

andrey2020 [161]

Answer:

28.89 percent

Step-by-step explanation:

45-32 is 13 and 13 is 28.89 percent of 45

Hope this helped!

7 0

2 years ago

Janet earns 7.55 per hour mowing lawns. Kelsey earns twice that amount per hour babysitting and ty earns 1.25 less per hour than

Artemon [7]

Janet = 7.55 x 15(hours) = 113.25
Kelsey = 15.10 x 15(hours) = 226.50
Ty = 13.85 x 15(hours) = 207.76

To gets Kelsey’s wage per hour you do 7.55 x 2 and to get ty you do 15.10(Kelsey’s wage per hour) - 1.25 which is 207.76

8 0

3 years ago

Evaluate 7³=7•7•7=343

ivanzaharov [21]

343=343=343
I am pretty sure this is the answer to the problem

4 0

3 years ago

Read 2 more answers

What is 42 divided by 6?

irakobra [83]

42/6 is 7 because seven 6s go in 42

6 0

3 years ago

Read 2 more answers

The college student senate is sponsoring a spring break Caribbean cruise raffle, with proceeds going to the local homeless shelt

drek231 [11]

Answer:

The mathematical expectation of a student who purchases 10 tickets is -$39.65.

Step-by-step explanation:

A student that purchases 10 tickets out of 2900 has a probability of winning the cruise that can be calculated as:

$p=10/2900\approx0.00345$

Each ticket cost $5, so he has spent $50 for the 10 tickets.

Then, the expected value of this operation is equal to the expected value of the earnings (probability of winning the prize multiplied by the value of the prize), minus the costs:

$E(X)=p\cdot R-C\\\\E(X)=0.00345\cdot3000-50=10.35-50=-39.65$

The mathematical expectation of a student who purchases 10 tickets is -$39.65.

8 0

3 years ago