Find the value of x in the angle pair.

x=30

Step-by-step explanation:

180-55=125

5x-25=125

125+25=150

5x=150

5/150=30

x=30

x=30

Step-by-step explanation:

The angles shown are supplementary meaning that the sum of the two is 180

So we create an equation

180=5x-25+55

now we solve for x

step 1 combine like terms

55-25=30

now we have

180=5x+30

step 2 subtract 30 from each side

180-30=150

now we have

150=5x

step 3 divide each side by 5

150/5=30

we're left with

x=30

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.