Alex divides by 2, then adds 5 to get an answer of 4. What was the original number?

-2

Step-by-step explanation:

(Let x = the original number)

x/2 + 5 = 4

subtract 5 from both sides

x/2 = -1

multiply both sides by 2 to isolate x

x = -2

The original number was -2.

all the angles opposite to the angle 150 would be 150 and all the angles that are next to 150 are 30 because they equal 180 it you add it up.

step-by-step explanation:

the answer is 13

step-by-step explanation:

5*5=25

12*12=144

25+144=169

169^2=13