Answer:
a=9
b=4
v=69
Step-by-step explanation:
The Pyth. Thm. tells us the following: (hypo)^2 = (leg 1)^2 + (leg 2)^2.
Here the hypo is 75 miles. One train traveled x miles and the other x+10 miles.
applying the Pyth. Thm.,
x^2 + (x+10)^2 = 75^2
which becomes x^2 + x^2 + 20x + 400 = 5625, or
2x^2 + 20x - 5225 = 0.
Choose a method easy for you that will lead to a solution (x-value).
Using "completing the square," I obtained x= 47.8 miles and x = 57.8 miles. I
It's very important to check one's work. Suppose x = 47.8 miles. Then x+10 = 57.8 miles.
47.8^2 + 57.8^2 = 75^ must be true. Is it?
2284.84 + 3340.84 5625
5625.6 is approx equal to 5625. Close enough.
The first train traveled 47.8 miles and the second 57.8 miles.
Your answers listed below run from first question answered to last.
7+K
5+Q
3-M
12+C
2n
(0,-1)(2,4)
slope = (4 + 1)/(2-0) = 5/2
answer is <span>5/2 (last choice)</span>
Answer:
He makes 13.07 per hour
Step-by-step explanation:
To determine how much he is making per hour, take the amount he makes and divide by the number of hours worked.
104.56 / 8
13.07
He makes 13.07 per hour