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3 years ago

One geometry question Please help me with this!!!!

Mathematics

1 answer:

otez555 [7]3 years ago

5 0

Answer:

∠ XAZ = 50°

Step-by-step explanation:

The measure of the circle = 360°

Given arc XYZ = 230°, then

arc XZ = 360° - 230° = 130°

The tangent- tangent angle XAZ is one half the difference of the intercepted arcs, that is

∠ XAZ = $\frac{1}{2}$ (230 - 130)° = 0.5 × 100° = 50°

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2 years ago

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How many women must be randomly selected to estimate the mean weight of women in one age group. We want 90% confidence that the

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Answer: the required sample size = 155

Step-by-step explanation:

If the standard deviation of the prior study is known, then the formula to compute required sample size:

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2 years ago

A regular polygon first maps directly onto itself after rotating 20 degrees. How many sides does the polygon have?

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