C. Supplementary
This means their angles add up to 180° which is a straight line
The answer would be 24.6 cm
If we are supposed to assume that QS=TV
4v+3=7v-9
minus 4v both sides
3=3v-9
add 9
12=3v
divide 3
4=v
v=4
sub back
4v+3=QS=TV
4(4)+3=QS=TV
16+3=QS
19=QS=TV
then answer is C
27.8 × 9.6 is equal to <span>266.88</span><span>
So, the closest would be A. 280.</span>
3x2+4x=2
6+4x=2
-6 -6
4x=-4
4 4
x=-1
