The discriminant:
D = b² - 4 a c = 7² - 4· 3 · 2 = 49 - 24 = 25
D > 0 This function has 2 x-intercepts ( 2 zeroes ).
x 1 = (-7+5)/6 =-1/3
x 2 = (-7-5) / 6 = - 2
If the boat can travel 45 mph in still water and the current is 10 mph, down stream, or with the current, has the boat moving at 55. Upstream has the boat moving 35 mph. It took t time to go with the current and an hour longer, t + 1, to go against it. Going from point A to B and back to A again means that the trip there was the same distance as the trip back. So d is the same for both upstream and downstream. The equation for upstream is d = 35(t + 1) or d = 35t + 35; the equation for downstream is d = 55t. Since the distances are the same, the transitive property says that so are the rates and times; therefore, we can set those equal to one another. 35t + 35 = 55t. Solve for t. When we find that t = 7/4 (1 3/4 hours), we sub that in to solve for distance. 55(7/4) = 96 1/4 miles.
Answer: the ratio 2:5
Step-by-step explanation:
I think thats the answer,
To get the coordinates, we would use the midpoint formula (google it)
(X1-X2/2 , Y1+Y2/2)
(-3+0/2 , -1+1/2)
N: (-3/2,0)
Answer:
answer is 20................................
