Answer:
a) 16
b) 100
c) 64
d)
[/tex]
Step-by-step explanation:
Perfect square trinomial:
A perfect square trinomial has the following format:

a.
x² – 8x

So 2a = 8, a = 4. Then

The perfect square trinomial is 
b. x2 + 20x +
2a = 20, so a = 10

The perfect square trinomial is 
C.
x² – 16x +
2a = -16, so a = -8.

The perfect square trinomial is 
d. x2 + 9x +
, so 

The perfect square trinomial is
[/tex]
The number that lies between that is 7
Answer:
Pythagoras theorem.
hypotenuse²=height²+base²
x²=15²+12²
x²=225+144
x²=329
x=329½
x=19.20
0.151515 (and so on) Try to stop at the third decimal when dividing on paper
Your answer will be 150 percent