Myra’s tutor used these steps to solve the problem 10x^2=90. • Divide both sides by 10 to get x^2=9.
• Take square roots on both sides to get x=±3.
Using this method, what is the solution to 7x^2=1008?

±
3

± 3

±
7

A. ± 7
B. ±12
C. ± 12
D. ±144

Step-by-step explanation:

7x² = 1008

divide both sides by 7:

x² = 144

x = ±√144 = ±12

yes, gavin is right.

step-by-step explanation:

gavin is correct. 

this problem is about converting 9% per year to how many percent per quarter. the rate is still the same. it only differed in the time period. so, through dimensional analysis,

9% per year  × (1 year / 4 quarters) = 2.25% per quarter

if he was asked to convert 9% per year to how many percent per quarter  compounded quarterly, then you will not simply divide by four. this is because compounding is not linear.

hope this , have a good day. c;

hi,

the area of abcd is 245.

3*24=230

4*94=1039

2*12=24

add all of them up, you get 2450