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kompoz [17]
3 years ago
7

Will give brainliest answer

Mathematics
2 answers:
lidiya [134]3 years ago
7 0
The square root of 10 because

sqrt(10) ^2 * 3.14 =

10*3.14 = 31.4
dmitriy555 [2]3 years ago
7 0

Answer:

78.4 square units

Step-by-step explanation:

First we will find the radius of the circle by using circumference formula of circle.

c = 2\pi \: r \\ 31.4 =  2 \times 3.14 \times r \\  \\ r =  \frac{31.4}{2 \times 3.14}  \\  \\ r =  \frac{3140}{2 \times 314}  \\  \\ r =  \frac{10}{2}  \\  \\ r = 5 \: units \\  \\ area \: of \: circle = \pi {r}^{2}  \\  = 3.14 \times  {5}^{2}  \\  = 3.14 \times 25 \\  = 78.5 \:  {units}^{2}  \\

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The swimming pool at Spring Valley High School is a rectangle with a width of 70 meters and a length of 30 meters. Around the pe
Nadya [2.5K]

The expression for the area of the rectangular swimming pool is given as follows:

A = w² + 100w + 2100.

<h3>What is the area of a rectangle?</h3>

The area of a rectangle of length l and width w is given by the multiplication of these measures, that is:

A = lw.

In this problem, considering the width of 70 meters and a length of 30 meters, plus the floor of w meters, we have that:

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Hence the area is given as follows:

A = l x wi = (30 + w)(70 + w) = w² + 100w + 2100.

More can be learned about the area of a rectangle at brainly.com/question/10489198

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1 year ago
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Hitman42 [59]
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3 years ago
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PtichkaEL [24]

(a)  x^{-5}

(b)  3x^{-7}

(c)  $\frac{4}{3}x^4

Solution:

To write each of the given expression in the form ax^n:

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Using exponential rule: \frac{a^x}{a^y}=a^{x-y}

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Divide numerator and denominator by the common factor 2, we get

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Using exponential rule: \frac{a^x}{a^y}=a^{x-y}

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$\frac{6x}{2x^8} =3x^{-7}

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Divide numerator and denominator by the common factor 7, we get

$\frac{28x^6}{21x^2}=\frac{4x^6}{3x^2}

Using exponential rule: \frac{a^x}{a^y}=a^{x-y}

        $=\frac{4}{3}x^{6-2}

$\frac{28x^6}{21x^2}=\frac{4}{3}x^4

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3 years ago
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Step-by-step explanation:

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