50/50 change because your only flipping it 2
4x^2 + 12x + 9 - 2x^2 - 7x - 15
4x^2 - 2x^2 = 2x^2
12x - 7x = 5x
9 - 15 = -6
2x^2 + 5x - 6
<span>First find how many grams are in 15.87kg and how many meters are in 30.48cm
15.87kg x 1000g/kg = 15, 870g
30.49cm x 1m/100cm = 0.3049m
Then, set up a proportion.
0.3049m/15, 870g = 1m/x g
Cross multiply to get..
0.3049x = 15, 870
Divide for x and there you are.</span>Source(s):Myself.1004 <span>· 8 years ago
</span>
Answer:
123
Step-by-step explanation:
180-57 ( cointerior angle because opposite angle are parallel )
=123
plz make me brainliest
