SOLUTION: solve the equation round to the nearest tenth, if necessary m^2 = 225 answers a:15 b:112.5,-112.5 c:12,-15 d:14,-14

Algebra ->  Equations -> SOLUTION: solve the equation round to the nearest tenth, if necessary m^2 = 225 answers a:15 b:112.5,-112.5 c:12,-15 d:14,-14      Log On


   

Question 630058: solve the equation round to the nearest tenth, if necessary m^2 = 225 answers a:15 b:112.5,-112.5 c:12,-15 d:14,-14
Found 2 solutions by ewatrrr, 55305:
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

 m%5E2+=+225

    m = ± 15    || Note: 15%2A15+=+225  and -15%2A-15+=+225

a. would be the correct answer assuming it read a: 15, -15

Answer by 55305(86) About Me  (Show Source):
You can put this solution on YOUR website!
To solve for m, we must take the square root of each side.
sqrt%28m%5E2%29=+sqrt%28225%29
m= 15 OR m=-15