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mylen [45]
3 years ago
8

Given a circle with measures of (C, d, and r) and a circle with measures of (C', d', and r'), what is r' if C/C' = 0.75 and d =

6.0?
Mathematics
2 answers:
Harlamova29_29 [7]3 years ago
4 0
<span>r' = 4 Since all circles are similar to each other. Such as the radius always being half of the diameter. The ratio between the diameter and the circumference being pi, etc., we have plenty of information to calculate C, d, and r for both circles. C/C' = 0.75 was given to us. So we know that d/d' is also 0.75. So let's write that equation and solve for d' d/d' = 0.75 6.0/d' = 0.75 6.0 = 0.75d' 6.0/0.75 = d' 8 = d' And r' will be half of d', so 8/2 = 4. Therefore r' = 4.</span>
AlekseyPX3 years ago
3 0

Answer: C) 12

Step-by-step explanation:

C /16  = 0.75 → C = 12

The ratio of a circle’s circumference and its diameter is the same for every circle, the ratio is known as π.

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The following table gives results from two groups of students who took a nonproctored test. Use a 0.01 significance level to tes
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Opposite claim is \mu_{1} \neq \mu_{2}

Null and alternative hypotheses:

H_{0}:\mu_{1} = \mu_{2}

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We can use TI-84 calculator to find the test statistic and P-value. The steps are as follows:

Press STAT and the scroll right to TESTS

Scroll down to 2-SampTTest... and scroll to stats.

Enter below information.

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\bar{x_{2}}=74.26

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Pooled: Yes

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The output is in the attachment.

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