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Answer: 16 miles</h3>
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Explanation:
x = time in hours spent going upstream
5-x = remaining time in hours spent going downstream
Those two quantities add to 5 hours total.
Let's find the expression for how far the fisherman went upstream
distance = rate*time
d = r*t
d = 2x
Do the same for the downstream portion
d = r*t
d = 8(5-x)
d = 40-8x
The values of d refer to the same distance because he came back to the starting point.
Set those right hand sides equal to one another and solve for x.
2x = 40-8x
2x+8x = 40
10x = 40
x = 40/10
x = 4
5-x = 5-4 = 1
He spent 4 hours going upstream, and the remaining 1 hour coming back downstream.
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If he spent 4 hours going upstream at 2 mph, then he traveled d = r*t = 2*4 = 8 miles.
The remaining 1 hour going downstream at 8 mph means he traveled d = r*t = 8*1 = 8 miles, which matches with the previous result. This confirms we have the correct one-way distance of 8 miles.
Therefore, the total round trip distance is 2*8 = 16 miles
Answer:
1 or 1/1
Step-by-step explanation:
Hope this helps:)
Answer:-4ab-7a-6
Step-by-step explanation:
(-6ab-7a+2) - (-2ab+8)
-6ab -7a + 2 + 2ab-8 (removed parentheses & fixed the negative at the end)
-4ab-7a-6 (combined like terms)
Answer:
Im not sure if this is the answer you are looking for but a equation would look like: Y= 2x + 5
Step-by-step explanation:
I used the y=mx+b to solve this problem as it seems to be a linear problem so I used a linear equation.
Answer:
Hypotenuse = 20
Step-by-step explanation:
As we know that in 30 60 90 triangle
Short leg = X
Hypotenuse = 2X
Perpendicular = X
Short leg = X = 10
Hypotenuse = 2X = 10*2 = 20