Answer:
2.5
Step-by-step explanation:
I think you're missing a value because none of those work. 2.5 does
4*2.5 = 10
8 - 10 = -2
4 (-2) = -8
-8 + 20 = 12
The answer is 67.6
You have to find the angle that has cos=8/21=0.381.
Answer: -3x² - 2x -57
This is how this would look: 
First I brought the denominator to the top for both expressions.
so I was left with: 2x-6(x+2) - 5x-15(x+3)
I distributed, combined like terms, and simplified.
<em><u> -3x² - 2x -57</u></em> was my answer
Step-by-step explanation:
Trust Milky. Milky smart.
Answer:
It's 8/9.
Step-by-step explanation:
A terminating decimal is a decimal that repeats the same number an infinite amount of times. 8/9 as a decimal is 0.8888888888888888...