Answer:
x=6
Step-by-step explanation:
Since y=7 when x=2, we can from here simplify and see that y=3.5 when x=1. If y=21, then we multiply 7 by 3 which is 21, and since we must keep a proportion, we must multiply 2 by 3 and get 6 as the answer.
5x + 2 is a denominator.
A denominator cannot equal zero since division by zero is undefined.
Set the denominator equal to zero and solve for x to find which value of x makes the denominator zero.
5x + 2 = 0
5x = -2
x = -2/5
The non-permissible replacement for the variable is -2/5.
Answer:
1/2
Step-by-step explanation:
substitute -2 for x.
any number to negative power must be flipped. 2^-2 = 1/(2^2) = 1/4
(2)(2^-2) = (2)(1/4) = 2/4 = 1/2
I don’t know I’m just doing this for the points I’m sorry ☮️✌️
