Answer:
C
Step-by-step explanation:
You can think of the square root as
which would multiply throughout producing the answer.
Answer:
regular price = $15
Step-by-step explanation:
Represent the regular price by d. Then the discount was 0.20d, and the sale price was (1 - 0.20)d, or 0.80d, which is $12.
Solving for d, we divide both sides by 0.80:
d = regular price = $15
2(30)=60+30=90. thats a right angle which is 90 degrees so the answer is 30