The answer is -15 because -20 plus -10 is -15 and -30 plus 15 is -15
The answer is 54
all the sides add up to 54
Answer:
The correct answer is 11x² + 11x - 6
Step-by-step explanation:
The given expression is,
(4x² + 12x - 9) + (7x² - x + 3)
<u>Simplify the given expression</u>
(4x² + 12x - 9) + (7x² - x + 3) = 4x² + 12x - 9 + 7x² - x + 3
= 4x² + 7x² + 12x - x - 9 + 3
= 11x² + 11x - 6
Therefore the simplified form of given expression is 11x² + 11x - 6
Let us count up the feet first, then the inches.
First, we must know that 1 foot = 12 inches
6+8 = 14
Now the inches.
10+9 = 19
19-12 = 7
14+1 = 15
Final answer: 15 feet, 7 inches
Answer:

Step-by-step explanation:
Since AB is parallel to CD,
∠h = 80° (alternate angles)
![\rule[225]{225}{2}](https://tex.z-dn.net/?f=%5Crule%5B225%5D%7B225%7D%7B2%7D)
Hope this helped!
<h3>~AH1807</h3>