Lets put everything into decimal form
2.5=2.5
3/4=0.75
107%=1.07
Order:
0.75, 1.07, 2.5
3/4, 107%, 2.5
Answer:
7) 1/2
8) 1/6
9) 2/3
10) 1/3
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The answer is y= -5/2x -17. All you have to do is substitute the point and the slope into the y= mx+ b equation.
(3x-5x)(x-10)
(-2x)(x-10)
-2x^2+20x
Let the speed of the current be y and the speed of Micah's sailing speed be x. Then 4.48/(x + y) = 0.32
4.48/(x - y) = 0.56
0.32x + 0.32y = 4.48 . . . (1)
0.56x - 0.56y = 4.48 . . . (2)
(1) x 7 => 2.24x + 2.24y = 31.36 . . . (3)
(2) x 4 => 2.24x - 2.24y = 17.92 . . . (4)
(3) - (4) => 4.48y = 13.44
y = 3
From (1), 0.32x + 0.32(3) = 4.48
0.32x = 4.48 - 0.96 = 3.52
x = 3.52/0.32 = 11
Therefore, the speed of the current is 3 miles per hour.
