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g100num [7]
3 years ago
12

Divide £42 in the ratio 4:3

Mathematics
1 answer:
k0ka [10]3 years ago
5 0

Answer:

Should be 24:18

Step-by-step explanation:

E

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Step-by-step explanation:

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A worker on a scaffolding 75 ft above the ground needs to lift a 500 lb bucket of cement from the ground to a point 30 ft above
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Answer:

W = 15900 ft.lb

Step-by-step explanation:

From the given information.

Consider y to be the distance from the ground towards the bucket of the cement.

At height y, suppose the bucket is lifted by Δy.

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where;

The bucket of the cement =  500Δy

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However; the workdone (W) can be calculated as:

W = \int^{30}_{0} \ 500 \ dy + \int^{30}_{0} \ 0.5 (75-y ) \ dy

W = 500 \times 30 + 0.5 \bigg(75 \times 30 - \dfrac{1}{2} \times 30^2 \bigg )

W = 15000 + 0.5 ( 2250 - 450)

W = 15000 + 900

W = 15900 ft.lb

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3 years ago
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Alisa, Mykia, and Martin decide to share the responsibility of walking their dog every
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