A
x X x
= x^2
B
20 x 20 = 40
C
100 / 40 = 2.5 per square inch
Answer: 57/54
Step-by-step explanation:
Look at the attachment
Hello,
x²=49
==>(x+7)(x-7)=0
x=7 or x=-7
Answer:
B: -a > -b
Step-by-step explanation:
a = 1, -a = -1
b = 3, -a = -3
-1 > -3
Therefore, -a > -b
Answer:
21
Step-by-step explanation:
KL = 12
LM = 9
12 + 9 = 21
KM = 21