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Artist 52 [7]
3 years ago
11

If the area of a circle is found using A=πr2, find r if the area is 25in2 and using pi equals 3.14

Mathematics
1 answer:
Olegator [25]3 years ago
5 0

Answer:

r = 2.8 in ( to 1 dec. place )

Step-by-step explanation:

substitute the given values into the formula

25 = 3.14r² ( divide both sides by 3.14 )

r² = \frac{25}{3.14} ( take the square root of both sides )

r = \sqrt{\frac{25}{3.14} } ≈ 2.8 in


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Free_Kalibri [48]

( \frac{f}{g} )(x) =  \frac{4 {x}^{2}  + 19x - 5}{4 {x}^{2}  - x}  =  \frac{(4x - 1)(x + 5)}{x(4x - 1)}  =  \frac{x + 5}{x}

3 0
3 years ago
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Find the diagonal of a television screen 30 inches wide by 35 inches tall.
marin [14]

Answer:

46.1 in

Step-by-step explanation:

Given data

Width= 30in

Height= 35in

To find the diagonal, we have to use the Pythagoras theorem

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4 0
3 years ago
The triangle below is equilateral. Find the length of side xx in simplest radical form with a rational denominator.
mylen [45]

The length of side x in simplest radical form with a rational denominator is 8√3

<h3>How to find the length of side x in simplest radical form with a rational denominator?</h3>

The given parameters are:

Triangle type = Equilateral triangle

Height (h) = 12

Missing side length = x

The missing side length, x is calculated using the following sine ratio

sin(60) = Height/Missing side length

This gives

sin(60) = 12/x

Make x the subject of the formula

So, we have

x = 12/sin(60)

Evaluate the quotient

So, we have

x = 12/(√3/2)

This gives

x = 24/√3

Rationalize

x = 24/√3 * √3/√3

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brainly.com/question/2437195

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=12s5t−6t4−6s−21

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3 years ago
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Salsk061 [2.6K]

Answer:

4 + 5x = 3 (-x + 3) -11

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8 0
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