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DiKsa [7]
3 years ago
6

Using similar triangles, what is x?

Mathematics
1 answer:
Lady bird [3.3K]3 years ago
4 0
\dfrac{x}{2.5}=\dfrac{x+2.4}{2.5+2}\\
\dfrac{x}{2.5}=\dfrac{x+2.4}{4.5}\\
4.5x=2.5(x+2.4)\\
4.5x=2.5x+6\\
2x=6\\
x=3
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Answer:

Critical value: z = 1.28

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Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

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The upper end of the interval is M added to the mean. So 64.26 + 17.773 = $82.033.

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