The answer would be 79 r 1
Hope this helps! :)
70=3/5
times 5/3
350/3
this is 7/8
350/3=7/8
times 8/7 both sides
400/3
that is 5/6
400/3=5/6 of total
times 6/5 both sides
800/5=160
kate had 160 originally
Answer:
speeds above 343 m/s
Step-by-step explanation:
the faster you go the faster the supersonic
Okay, so first you draw a picture and let x be the distance from point D to the rest stop. Then the distance from point to the rest stop is 8 - x
You know that the length of the new trail is y + z, where y is the distance from Ancaster to the rest stop and z is the distance from Dundas to the rest stop.
Now by the Pythagorean theorem, y^2 = 4^2 + x^2 and z^2 = 6^2 + (8 - x) ^2
So take square roots of these, add them, and minimize.
Note: I am assuming the path is perfectly straight, otherwise this approach fails.
[ Answer ]
[ Explanation ]
9 * 4 - 2x ___ 2(9 - x)
X = 6
Insert Numbers Into Equation
9 * 4 - (2 * 6) ___ 2(9 - 6)
Solve
9 * 4 = 36
2 * 6 = 12
36 - 12 = 24
9 - 6 = 3
2 * 3 = 6
24 > 6