Let A= <span>2 – 11x2 – 8x + 6x2, the standard form of A is
A = - 5x² -8x + 2
</span>
The answer is A
-6.9+6.8 is equal to -0.1, and -5.4+5.5 is 0.1. If you add those two together, you get zero.
20 meter per second= 1200 m/h=1.5km/h
The time is 1300: 1.5 =866.66
B) 28×50, then take the answer - 1100