The sum of 12 times a number and 180 is opposite of 720. what is the number.

Step-by-step explanation:

Let the number be x

12x + 180 = -720

12x = -720 - 180

12x = -900

x = -900/12

x = -75

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 im pretty sure that is the right answer

step-by-step explanation:

f(2x−x2)=−3x2+6x−1

step-by-step explanation:

set up the composite function and evaluate.

f(2x−x2)=−3x2+6x−1