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Svetllana [295]
3 years ago
5

Please help me with this problem, thank you.

Mathematics
2 answers:
Nitella [24]3 years ago
4 0

The answer is just 117.

Every straight line is 180 degrees, meaning that the angle of ∠ABE and ∠CBE must add up to 180. You can say that ∠ABE + ∠CBE = 180. If you rearrange, you can see that ∠ABE = 180 - ∠CBE. Since ∠CBE is given as 63, all you need to do is subtract this from 180 to get 117.

Hope this helps!

fredd [130]3 years ago
3 0
The answer is 117 degrees
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Answer:

Exercise (a)

The work done in pulling the rope to the top of the building is 750 lb·ft

Exercise (b)

The work done in pulling half the rope to the top of the building is 562.5 lb·ft

Step-by-step explanation:

Exercise (a)

The given parameters of the rope are;

The length of the rope = 50 ft.

The weight of the rope = 0.6 lb/ft.

The height of the building = 120 ft.

We have;

The work done in pulling a piece of the upper portion, ΔW₁ is given as follows;

ΔW₁ = 0.6Δx·x

The work done for the second half, ΔW₂, is given as follows;

ΔW₂ = 0.6Δx·x + 25×0.6 × 25 =  0.6Δx·x + 375

The total work done, W = W₁ + W₂ = 0.6Δx·x + 0.6Δx·x + 375

∴ We have;

W = 2 \times \int\limits^{25}_0 {0.6 \cdot x} \, dx + 375= 2 \times \left[0.6 \cdot \dfrac{x^2}{2} \right]^{25}_0 + 375 = 750

The work done in pulling the rope to the top of the building, W = 750 lb·ft

Exercise (b)

The work done in pulling half the rope is given by W₂ as follows;

W_2 =  \int\limits^{25}_0 {0.6 \cdot x} \, dx + 375= \left[0.6 \cdot \dfrac{x^2}{2} \right]^{25}_0 + 375 = 562.5

The work done in pulling half the rope, W₂ = 562.5 lb·ft

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2 years ago
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Answer:

-x > -5

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4<5

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-4>-5

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3 years ago
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336
60*4=240
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3 years ago
Tim wants to boil rice on the stove. He needs to use exactly three gallons of water in a pot to boil the rice. Which method shou
Volgvan
B. is the answer because he can just refill the 1 gallon jug to eventually measure out 3 gallons!
7 0
3 years ago
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Please anyone help me The measure of an angle is five times the measure of its supplementary angle. What is the measure of each
Radda [10]

Answer:

150 and 30

Step-by-step explanation:

Hello!

Supplementary angles are angles that when added up equal 180

Which can be shown by

x + x = 180

Since one has to be 5 times bigger we put a 5 in front of one of the x's

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Now we solve for x

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Now we put that into each angle

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The answer is 150 and 30

Hope this Helps!

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3 years ago
Read 2 more answers
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