If I understand the question, you have to get n alone. in this case, you have to subtract 7 from both sides, resulting in n (is less than) -10
Answer:
19) ( 
)^2 = 
20) -
= -81
21) 
= 16
Step-by-step explanation:
The only wrong ones are
19) ( )^2 =
20) - = -81 ... negative is not inside a parenthesis that's why it is still negative
21) you can add another way is = 16
Everything else looks good. Great job!
Answer:
39.25 cm
Step-by-step explanation:
The formula for a circle is pi x radius x radius.
So to get the radius, you multiply 10 and 1/2. You should get 5. Then you multiply 5 by 5. You should get 25.
Then you multiply 3.14 and 25. You should get 78.5.
The last step is to divide 2 by 78.5. You should get 39.25
Multiply both sides by -8.
Then add the one to both side to cancel it out and get 7x by itself
Then divide the whole thing by 7. So it’ll look like this: 32+1=7x and then add the one then divide by 7
