Answer:
2
Step-by-step explanation:
3 x 4 = 12 - 8 = 4 ÷ 2 = 2
Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :
<span> x^2-14*x+31-(63)=0 </span><span>x = 16
</span>
Distance=speed times time
distance=30mi
speed=15mph
t=t
so
30=15 times t
divide both sides by 15
2=t
2 hours
8n - 7
because from 8n, 7 is subtracted
39 x 73 - use a calculator or something if you need the answer for it.
