2. Pearl solved a system of equations using substitution. Did she
do it correctly? How do you know? If she did not find her error and
solve the system correctly.
2x + (-5 - x) = 20
r-5= 20
X-5 + 5 = 20 + 5
x= 25
System:
y=-5-X
2x + y = 20
Pearl's Solution:
r = 25
y = -30

false

step-by-step explanation:

false : it can not go to 9 the highest that part can go is 7

here is your proof

inverse operation of addition

(8+64)^2= 5184 < answer

step-by-step explanation:

2^3 = 8

4^3= 64

(8+64)^2 = 5184

a. positive: 2 or 0; negative : 2 or 0; complex: 4or2or0