If a-b=12 and b/2=10,what is the value of a+b?

52.

Step-by-step explanation:

b÷2=10 and a-b=12

You work it backwards; dividing becomes multiplying, subtracting becomes adding, multiplying becomes dividing, and adding becomes subtracting.

With that, multiply both sides of the first problem (b÷2=10) by 2, then you have b=20.

Plug b into the second equation (a-b=12) then solve.

a-20=12

Add 20

a=32

Because it is asking for the value of a+b, add 20 and 32 and you get 52.

what level of math? also i don't need to be paid if i can you.

y = 3x+4

step-by-step explanation:

to find the slope

slope = (y2-y1)/ (x2-x1)

    = (-8-4)/ (-4-0)

    = -12/-4

  = 3

using the slope intercept form of a line

y= mx+b

we know the slope is 3

we know the y intercept is 4 ( the point where it crosses the y axis or x=0)

y = 3x+4