Twelve decreased by twice a number is the same as 8 times the sumof the number plus 4. what is the number?

The number is -2

Step-by-step explanation:

Let x be the number.

Then according to the question, we have the equation

First open parenthesis on the right side by multiplying 8 inside, we get

Now, Subtract 32 and add 2x from both sides we get

Hence the number is -2.

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing

step-by-step explanation:

step-by-step explanation:

de-gf

hj=3x+20

ji=15x-64