10 or 25 and a lot more pretty much anything that ends with 0 or 5
Answer:
42 and 21
Step-by-step explanation:
Just divide 882 by 21 to get 42
Answer:
The mistake she made was ; She didn't change the sign when subtracting -3/4 from both sides
She wrote 5/4+3/4 instead of 5/4-3/4
Step-by-step explanation:
Correct solution:

Subtract-3/4 from both sides

Simplify

Find the measure of the third angle
Use your trig functions the get the sides
Then calculate area and perimeter