Answer:
There are 9 boys and 12 girls in mrs Clark's class
Step-by-step explanation:
We are given that mrs Clark has 21 students, of which 3/7 are boys
In order to find the number of boys, we multiply 21 by 3/7 which results in 9
This means there are 9 boys and then we just simply subtract 9 from 21 in order to find the number of girls 21-9=12
therefore there are 9 boys and 12 girls in mrs Clark's class
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Answer:</h3>

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Step-by-step explanation:</h3>
<u>Given equations:</u>

A) 2x² - 162 = 0
Step 1: Divide both sides by 2.
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Step 2: Take the square root of both sides (using both the positive and negative roots).

Step 3: Separate into two cases.

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B) -1/2(x - 3)² = -2
Step 1: Multiply both sides by -2.

Step 2: Take the square root of both sides (using both the positive and negative roots).

Step 3: Separate into two cases and solve each one.
The answer for ur question is :
35/8=4.375
so delia has 4.375 yard of ribbon
HOPE THIS HELPS !!!! :))
Answer:

Step-by-step explanation:
Distribute the 4

Subtract the 7

Subtract y and add 1
Answer:
1) 8x
2) 12x - 3y
Step-by-step explanation:
1) Both of them have a like term, so you can subtract them across
2) 10x + 2x = 12x, have a like term so you can add them across and 3y is the outlier so that stays alone.
Hope this helps!