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Anestetic [448]
3 years ago
7

Help. Find the slop and reduce

Mathematics
1 answer:
aleksandrvk [35]3 years ago
5 0
Slope = (-1 + 3)/(-4 + 3) = 2/-1 = -2

answer
slope of PQ = -2
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A heavy rope, 30 ft long, weighs 0.4 lb/ft and hangs over the edge of a building 80 ft high. Approximate the required work by a
gizmo_the_mogwai [7]

Answer:

180 fb*lb

45 ft*lb

Step-by-step explanation:

We have that the work is equal to:

W = F * d

but when the force is constant and in this case, it is changing.

 therefore it would be:

W = \int\limits^b_ a {F(x)} \, dx

Where a = 0 and b = 30.

F (x) = 0.4 * x

Therefore, we replace and we would be left with:

W = \int\limits^b_a {0.4*x} \, dx

We integrate and we have:

W = 0.4 / 2 * x ^ 2

W = 0.2 * (x ^ 2) from 0 to 30, we replace:

W = 0.2 * (30 ^ 2) - 0.2 * (0 ^ 2)

W = 180 ft * lb

Now in the second part it is the same, but the integral would be from 0 to 15.

we replace:

W = 0.2 * (15 ^ 2) - 0.2 * (0 ^ 2)

W = 45 ft * lb

6 0
3 years ago
What is five-eighths(5/8) of 64
gavmur [86]
Five-eights(5/8)of 64is 40 because 5/8×64=40
4 0
4 years ago
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Why can you use a model to check your answer for a division problem
dangina [55]
Because if you a model your not going to get the right answer
8 0
3 years ago
I need help with math question
Roman55 [17]
So just pick all the numbers greater than -7 not including -7
greater meaning more positive

-10, no
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3rd option is answer
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4 years ago
Using only words solve 8x+3=27 step by step​
erik [133]

Answer:

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Step-by-step explanation:

Subtract 3 from both sides

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Divide both sides by 8

Simplify 24/8 to 3

5 0
3 years ago
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