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3 years ago

Plz help ill give brainliest

Mathematics

1 answer:

MArishka [77]3 years ago

6 0

Answer:

100% answer B

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Eva and emily can clean the entire house in 4 hours. Eva can do it by herself in 6 hours. How long would it take emily to do it

aksik [14]

Let x = the number of hours Eva needs to complete the job
and y = the number of hours Emily needs to complete the job

x = 6
1/x + 1/y = 1/4
(The amount of work Eva does in 1 hr + the amount of work Emily does in 1 hr should equal 1/4 of the total work)
1/6 + 1/y = 1/4
1/y = 1/12
y = 12 hours
Emily would take 12 hours to do it by herself.

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3 years ago

Show Work What is the value of M when -4m + 8m = -16?

Natalija [7]

-4m + 8m = -16
4m = -16
m = -16 / 4
m = -4

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3 years ago

Suppose you had 9 counselors available. How many campers could you have?

gogolik [260]

Answer:

Step-by-step explaination

24/3=8

8x9=72

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3 years ago

Mr mojo borrowed $9000 for 10 years to make home improvements. If he repaid a total of $20000 at what interest rate did he borro

sesenic [268]

The rate of interest is 12.2 %

Solution:

Given that, Mr mojo borrowed $9000 for 10 years to make home improvements

He repaid a total of $ 20000

To find: Rate of interest

We can use simple interest formula to calculate the rate of interest

Total amount = Principal + simple interest

20000 = 9000 + simple interest

Simple interest = 20000 - 9000

Simple interest = 11000

The simple interest is given as:

$I = \frac{ p \times r \times t}{100}$

Where,

"I" is the simple interest

"p" is the principal

"r" is the rate of interest

"t" is the number of years

Substituting the values,

$11000 = \frac{9000 \times r \times 10}{100}\\\\11000 = 900 \times r\\\\r = \frac{11000}{900} = 12.2$

Thus rate of interest is 12.2 %

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3 years ago

There are 6 packages that store 30 baseball cards.

Helga [31]

the answer is a cause in the question they state the 6 packs first before the cards (30)

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3 years ago