Answer:
Option A. 
Step-by-step explanation:
we know that
A perfect square trinomial is equal to

In this problem we have

equate the equations and solve for a

so


therefore
the perfect square trinomial is equal to 
Answer:
the only answer that makes sense would be the length
A=1/2ab
Replace the variables with their value
15=1/2(3/2)b
Multiply 1/2 and 3/2

15=3/4b
Divide 3/4 on both sides
15/(3/4) is the same thing as

45/4=b
Answer:
1/49
Step-by-step explanation:
1/7^2 is merely 1^2/7^2 which is 1/49
Hope this helps :D plz mark brainliest if correct.
Answer:
yes cuz +1+1
Step-by-step explanation: