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3 years ago

11

A math teacher gave her class two tests. Twenty-five percent of the class passed both tests and 42 percent of the class passed o

nly the first test. What percent of the students who passed the first test also passed the second?

1 answer:

Norma-Jean [14]3 years ago

4 0

25% of the class who passed the first test also passed the second

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4 1/2 divided by 2 3/8

Yuki888 [10]

First you make them mixed numbers:
9/2 ÷ 19/8
Then you flip the second fraction around
9/2 ÷ 8/19
Then you change ÷ to ×
9/2 × 8/19
And then multiply across!
72/38 = 1 34/38 = 1 17/19 (the final answer)
Hope this helps!

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3 years ago

What does the variable r represent in the equation 10r+4=8

Kryger [21]

Answer:

The value of variable r in the equation $10r+4=8$ is $\mathbf{r=0.4}$

Step-by-step explanation:

We need to find the value of variable r in the equation $10r+4=8$

Step 1: Write the equation

$10r+4=8$

Step 2: Subtract 4 on both sides

$10r+4-4=8-4\\10r=4$

Step 3: Divide both sides by 4

$\frac{10r}{10}=\frac{4}{10}\\r=0.4$

So, The value of variable r in the equation $10r+4=8$ is $\mathbf{r=0.4}$

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3 years ago

15 is what percent of<br> 600?<br> Pls show work

chubhunter [2.5K]

Answer:

90

Step-by-step explanation:

600(.15) = 90

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3 years ago

Read 2 more answers

Name the postulate of the therom qts=srq

GalinKa [24]

Answer:

Seeing that we have a shared hypotenuse and two sides that are congruent, the theorem that we can use is the HL Theorem.

Step-by-step explanation:

mark brainliest :)

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3 years ago

Write -3 11 as a decimal number.<br> .<br> 16

mixas84 [53]

Answer: i dont know

Step-by-step explanation:ok i am srry

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3 years ago