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34kurt
2 years ago
5

If a circle has a diameter of 11.5 feet, what is the area?

Mathematics
1 answer:
OverLord2011 [107]2 years ago
3 0

Answer:

103.87 ft.

In this case, area equals \pi r^2

The diameter is 2r

But before worrying about anything else, we must start the problem. Let's do that now.

The first step is to find the broken-down form of the area.

A = \frac{1}{4} \pi d^2

Next, break this equation into a solvable definition.

\frac{1}{4} * \pi  * 11.5

Lastly, solve this equation, and round.

A ≈ 103.86891~ft^2

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11/29

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How many words of five letters can be created that start with the letter T, contain 2 other consonats and end with 2 vowels? Not
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If we're only counting 5 vowels (A, E, I, O, U) and 20 consonants (everything else, minus T), then there are

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We want the word to start with T, and we'll allow any arrangement of the other 4 letters, so that the total number of words is

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8 0
3 years ago
A pile of 42 coins worth $4.90, consisting of nickels and quarters. How many nickels are there?
Ymorist [56]

Answer:14

Step-by-step explanation:

A nickel is 5 cents (20% of dollar)

and a quarter is 25 cents (25% of dollar)

We have given a pile of 42 coins worth of $4.90

Let x be the no nickels and

y be the no of quarter

therefore

x+y=42    -----1

\frac{x}{4}+\frac{y}{20}=4.90 ---2

Solving \left ( 1\right )&\left ( 2\right ) we get

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6 0
3 years ago
Pls help ill give u brainliest
Monica [59]

Answer:

Answers:

Rate of change = -5

Initial value = 25


Step-by-step explanation:

Each time x increases by 2 (eg from x = 1 to x = 3), the value of y drops by 10 (eg from y = 20 to y = 10)

Therefore the slope is...

slope = rise/run = (change in y)/(change in x) = -10/2 = -5

slope = -5

So each time x increases by 1, y will decrease by 5

Flip things around: each time x decreases by 1, y will increase by 5

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Answer:

X= 17

Step-by-step explanation:

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