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2 years ago

Please help, I was absent for this day so I don't know how to do this.

Mathematics

1 answer:

RSB [31]2 years ago

8 0

Answer:

Step-by-step explanation:

An arc is a portion of the circle's circumference bounded by 2 radii

The formula for determining the length of an arc is expressed as

Length of arc = θ/360 × 2πr

Where

θ represents the central angle or angle which the 2 radii subtends at the center of the circle.

r represents the radius of the circle.

π is a constant whose value is 3.14

From the information given,

Radius, r = 5 inches

θ = 170 degrees

Therefore,

Length of arc = 170/360 × 2 × π × 5

Length of arc = 4.7222π feet

rounding up to 2 decimal places, it becomes

4.72π feet

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bogdanovich [222]

Answer:

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2 years ago

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Bas_tet [7]

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<h3>What is a confidence interval of proportions?</h3>

A confidence interval of proportions is given by:

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In which:

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In this problem, we have a 95% confidence level, hence $\alpha = 0.95$ , z is the value of Z that has a p-value of $\frac{1+0.95}{2} = 0.975$ , so the critical value is z = 1.96.

We also consider that 130 out of the 479 season ticket holders spent $1000 or more at the previous two home football games, hence:

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Hence the bounds of the interval are found as follows:

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More can be learned about the z-distribution at brainly.com/question/25890103

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1 year ago

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Illusion [34]

I think it is E .I am thankfull in helping you

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2 years ago

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8_murik_8 [283]

Answer:

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2 years ago

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