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Veseljchak [2.6K]
2 years ago
8

Last year, Adele went bowling several times and earned an average score of 95 points.

Mathematics
2 answers:
Taya2010 [7]2 years ago
7 0

Answer:

40 percent increase

Step-by-step explanation:

Starting point - 95

End point - 133

133-95 = 38

38/95 = 0.4

0.4*100=

40

kotegsom [21]2 years ago
7 0

Answer:

40%

Step-by-step explanation:

(133 - 95)/95 x 100 = (38/95) x 100 = 40%

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Natasha2012 [34]

Answer: D. No; the graph fails the vertical line test.

The vertical line test is a tool used to determine if we have a function. If we can draw a single straight vertical line through more than one point on the red curve, then the graph is said to have failed the vertical line test. Consequently, this leads to the relation not being a function.

For this circle graph, we can draw a vertical line through more than one point, which is why we don't have a function here.

Put another way, there are inputs (x) that produce more than one output (y), so that's why we don't have a function.

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3 years ago
The radii of two circles are in the ratio of 3 to 1. Find the area of the smaller circle if the area of the larger circle is 27
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ANSWER
3\pi sq.\: in.

EXPLANATION

Let R be the radius of the bigger circle and r, be the radius of the smaller circle.

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\frac{R}{r} = \frac{3}{1}

We make R the subject to get,

R = 3r

The area of the bigger circle can be found using the formula,

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Area=\pi ({3r})^{2}

Area=9\pi {r}^{2}

But it was given in the question that, the area of the bigger circle is 27π.

27\pi=9\pi {r}^{2}

We divide through by 9π to get,

3 = {r}^{2}

This means that,
r = \sqrt{3}

The area of the smaller circle is therefore

= \pi {( \sqrt{3}) }^{2}

= 3\pi
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