Add -6 to both sides
square root x+6-6=7+-6
square root x=1
Solve square root
square root x=1
x= 1^2 ( square root both sides )
x=1
I hope that's help !
Answer:

Step-by-step explanation:
Answer:
The number of pages that Polina read was 90 and the number of pages that Marcus read was 18
Step-by-step explanation:
Let
x -----> number of pages that Polina read
y ----> number of pages that Marcus read
we know that
x+y=108 ----> equation A
x=5y -----> equation B
substitute equation B in equation A and solve for y

Find the value of x

therefore
The number of pages that Polina read was 90 and the number of pages that Marcus read was 18
D is the answer i think it is at least
Answer:
kinda hard
Step-by-step explanation: