<span>The equation that gives the speed of the boat after David has rowed for x hours is </span><span>y=4-1.5x.
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The direction David is rowing (upstream) is the positive direction. That makes the direction the river is flowing negative.
David rows at 6 mph, but the river is flowing at 2 mph in the opposite direction. That means his "net" speed, relative to an observer on the ground, is 6-2 = 4 mph.
He loses 1.5 mph of his speed every hour, so after x hours, his speed is 4-1.5x.
Answer:
306 square inches.
Step-by-step explanation:
All surfaces of the cubes are exposed to the outside except 2 ( where 2 of the cubes join).
6 separate cubes have 6 * 6 faces exposed so this object has 36 - 2 = 34 surfaces exposed.
Each face of one cube = 3*3 = 9 in^2.
Therefore the surface area = 9 * 34 = 306 in^2.
Actually, Abby, this problem has NO SOLUTION. WHY? because no absolute value is ever less than zero (0).
first you find the slope by making using the quation for slope
(7-3)/(0-5) and you find your slope is 4/-5. Then you can plug this into point slope form using on of the coordinates so:
y-y1=m(x-x1) --> y-3=-4/5(x-5)
then you distribute the -1 so -----> y-3=-4/5x+4 and then move the 3 over
so the answer is y= -4/5x+7