The only two usable numbers that make up 63 are 9 and 7 and 21 and 3 in some form. So that's how you start the question.
(x 9)(x 7) is what you can get. The 2x is very small, so it suggests that 21 and 3 are not the right factors.
You have a plus 2 as the middle term. That is exactly the difference between 9 and 7. That tells you the sign on 9 because it is larger than 7.
(x + 9) ( x 7) is what you have so far. Since 63 is minus, the 7 must be minus. Now what you have is
(x + 9)(x - 7) and that is the final answer.
Answer:
5.53 seconds.
Step-by-step explanation:
The equation of motion is
d = 4.9t^2 so
150 = .9 t^2
t^2 = 150 / 4.9
t^2 = 30.612
t = 5.53 seconds.
She had 2,500 stamps before she gave 1% to her brother, since 2,475 is 99%, i just calculated this equation: p/w = a/100
