15 (x – 1) + 4 ( x + 3 ) = 2 ( x + 9) + 4

Plz ( true - false) all triangles have interior angles whose measure sum to 90.

If you double the input of a function and it results in half the output, and if you triple the input and it results in a third of the output, what can be guessed about the function? check all that apply.

In dire need~! describe how to use area models to find the quotient 2/3 divided by 1/5. check your work by also finding the quotient 2/3 divided by 1/5 using numerical operations only.