Answer:
B. -9, 7
Step-by-step explanation:
For the rational expression to be undefined the denominator has to equal 0.
x² + 2x - 63 = 0
Factor left side.
(x - 7)(x + 9) = 0
Set factors equal to 0.
x - 7 = 0
x = 7
x + 9 = 0
x = -9
x = -9 or x = 7
Answer:
3
Step-by-step explanation:
A 6-inch piece of string can be cut into 12 pieces that are 1/2 inch each. If Lee needs 15 pieces, she needs 3 more.
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Each inch is divided into 2 pieces. That's what 1/2 inch means. 6×2 = 12.
I would think it would be 0.22x-5=0.66. Al you have to do it take a calculator and do 2 divided by 3 for the first fraction. The second fraction would just be 2 divided by 3!