Combine likes terms 4x -4 + (-5x +8)

SHOW YOUR WORK

Me! #1 write an equation for the interior angles of this triangle that uses the triangle sum theorem. #2 what is the value of x? #3 what is the measure of #4 classify the triangle above as acute, obtuse, or right. state your reason in a complete sentence.

One positive number is 9 more than twice another. if their product is 95, find the numbers

What is the number 321,000,000 in scientific notation? also what is the number? ?