Answer:
x = 2 or x = -2
Step-by-step explanation:
7x^2 - 28 = 0
7x^2 = 28
x^2 = 28/7 = 4
x = root(4) or x = -root(4)
x = 2 or x = -2
This answer of this equation is n=10
Answer:
x = - 1/7
Step-by-step explanation:
Nang read 23 books because 23 - 5 = 18, divide that by two (to get books read for both of them).
9 + 5 = 14, so Simone read 14 books,
9 = Amount of books Nang read.
Hope this helps.
