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3 years ago

8

If 3 sisters receive $180 and split it so that the middle sister gets twice as much as the youngest sister and the oldest sister

gets three times as much the youngest sister, how much does the youngest sister get?

1 answer:

timurjin [86]3 years ago

8 0

Answer:

30$

Step-by-step explanation:

1st sister is 3x

2nd sister 2x

3th is x

3x+2x+x=180

6x=180

X=30

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Answer:

$V=23.37\ ft^3$

Step-by-step explanation:

Given that,

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Step-by-step explanation:

She is taxed at a rate of 2.9%, so each year she is taxed 213000 * 2.9% . calculating this, we find that every year, she must pay 6177 in taxes. However, we need the amount in a month, so we divide by 12, to get 6177/12= 514.75, or A

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3 years ago

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It has been estimated that 72.7% of alcoholics need professional help to stop drinking. What is the probability that a random al

Svetradugi [14.3K]

The probability that a random alcoholic can kick the habit without professional help is 0.273 .

<h3>What is Probability ?</h3>

Probability is the study of likeliness of an event to happen.

It has a range of 0 to 1 , where 0 indicates uncertainty and 1 indicates certainty.

It is given that

The alcoholics that need professional help to stop drinking is 72.7 %

Therefore the probability of this is 72.7 /100 = 0.727

The probability that they will not need professional help is given by

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1 year ago

How to factorise the difference of perfect squares. for the g on the top and j on the top

Fed [463]

Answer:

see explanation

Step-by-step explanation:

A difference of two squares is factored as

a² - b² = (a - b)(a + b)

(g)

1 - 81y²

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= (1 - 9y)(1 + 9y)

(j)

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3 years ago

A rectangular tank that is 5324 ft cubed with a square base and open top is to be constructed of sheet steel of a given thicknes

marishachu [46]

Answer:

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Step-by-step explanation:

Let s be the side of the square base and h be the height of the tank. Since the tank volume is restricted to 5324 ft cubed we have the following equation:

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As the thickness is already defined, we can minimize the weight by minimizing the surface area of the tank

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We can substitute $h = 5324 / s^2$

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To find the minimum of this function, we can take the first derivative, and set it to 0

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3 years ago