Answer: x = 1 and x = -7
Explanation:
x^2 + 6x - 7 = 0
x^2 + 6x + 3^2 = 7 + 3^2
(x + 3)^2 = 16
x + 3 = +-4 (square both sides)
x + 3 = 4
x = 1
x + 3 = -4
x = -7
Answer:

Step-by-step explanation:





Answer:
3/7
Step-by-step explanation:
Because there are three yellow marbles and 7 marbles in all
Answer:

Step-by-step explanation:
Step 1:

Step 2:
Then multiply both by 1000

It cant be simplifyed further so its in simplest form