Answer:
17.5
Step-by-step explanation:
A =
p = 7
q = 5
7 x 5 = 35
35 ÷ 2 = 17.5
The required numbers are :
-21X + 9
450
acc to ques....perimeter of figure= 3a^2+15a+9
let missing dimension be x
= x+10a-2+a^2-7+5a=3a^2+15a+9
x+15a+a^2-9=3a^2+15a+9
x=2a^2+18
-2
3(a+1.5)=-1.5
a+1.5 = - 1.5/3 = - 0.5
a = - 0.5 - 1.5 = - 2
