Answer:
x = ± 
Step-by-step explanation:
Given
x² = 20 ( take the square root of both sides )
x = ± 
which can be simplified to
x = ± 2
[ ± means plus or minus ]
26.18 divided by 77 = 0.34. Therefore the percentage change = 66%
Answer:
600
Step-by-step explanation:
multiply w l h
10 x 5=50
50 x 12=160
Answer:
answer is C
Step-by-step explanation:
because -1<5
and not 6<-1 or -5>5