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3 years ago

Sally drinks one and one third cups of milk 3 times a day. How many cups dose sally drink in a week?

Mathematics

1 answer:

Fantom [35]3 years ago

5 0

Answer:In a week, Sally drinks 28 cups of milk

Step-by-step explanation:

In a day Sally drinks one and one third cups of milk 3 times which is equal to

1 1/3 x 3

4/3 x 3 =4 cups per day

1 week =7 days

therefore if she drinks 4 cups of milk in a day

in 7 days she will drink 4 x 7 =28 cups

In a week, Sally drinks 28 cups of milk

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3 years ago

Find the oth term of the geometric sequence 9, -18, 36, ...

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Given :-

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3 years ago

If an open box has a square base and a volume of 115 in.3 and is constructed from a tin sheet, find the dimensions of the box, a

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Let h = height of the box,
x = side length of the base.

Volume of the box is $V=x^{2} h = 115$ .
So $h = \frac{115}{ x^{2} }$

Surface area of a box is S = 2(Width • Length + Length • Height + Height • Width).
So surface area of the box is
$S = 2( x^{2} + hx + hx) \\ = 2 x^{2} + 4hx \\ = 2 x^{2} + 4( \frac{115}{ x^{2} } )x$
$= 2 x^{2} + \frac{460}{x}$
The surface are is supposed to be the minimum. So we'll need to find the first derivative of the surface area function and set it to zero.

$S' = 4x- \frac{460}{ x^{2} } = 0$
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5 0

3 years ago

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