(negative square root two)/2, (negative square root two)/2
Answer:
A
Step-by-step explanation:
Im not sure if the answer is correct tho
<u>Answer:</u>


<u>Step-by-step explanation:</u>

First set the equation to 0


Second, get the 12 on the right side of the equal sign by adding a -12 to each side



Square root both sides of the equal sign.


Take the square root on left sides of the equal sign.


Take the square root on the right side of the equal sign. Remember 



<u>AND</u>

70 times .9 is 63 so 90 minus 63 is27 so it was $27