What is the value of x when -3x + 7x = -12? a) -3 b) -6/5 c) 3 d)4/7

-3x + 7x = -12

You need to add like terms.

4x = -12

Then, you need to divide both side by 4.

x = -3

So the answer is:

A) x = -3

The answer is A.) -3

Step-by-step explanation:

x ( -3 + 7) = -12 use distributive property to factor out the x. So

x (4) = -12 add the like terms inside parenthesis

¼ * 4x = -12 *

1

4

multiply both side by the reciprocal of 4

x = -3 final answer

2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.

answer: 94

step-by-step explanation: 79+91+92+94+94 = 450 divided by 5 (since there are 5 number that are being added) = 90