<span>q + d=19
0.25q + 0.1d=4
</span><span> (d)
-0.1(q + d=19)
0.25q + 0.1d=4
Opposites cancel
-0.1q -0.1 d=1.9
0.25q + 0.1d=4</span>
A triangle has three angles, and all of them adds up to 180 degrees. Therefore, if one angle is 90 degrees, the other two angles must add up to 90 degrees in order for the angles to equal 180 degrees.
I think it is 3200 because you divide 8000 by 5 then multiply that by 2
-99 = -9*11
176 = 16*11
Both factorizations have 11 show up. It turns out that 11 is the largest common factor.
Answer: C) 11
Note: if you divide both numerator and denominator by 11, then the fraction reduces to -9/16
