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2 years ago

Write the ratio of the first measurement to the second measurement. Compare in millimeters.

Mathematics

1 answer:

ale4655 [162]2 years ago

4 0

Answer:

8:19

Step-by-step explanation:

Ball B: diameter in mm = 9.5 * 10 = 95 mm

Ratio of Ball A to Ball B = 40 : 95

= 8:19 answer

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Step-by-step explanation:

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3 years ago

put the steps, for changing the formula for the arc length of a circle in degrees to the formula for the arc length of a circle

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Answer:

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Step-by-step explanation:

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Write the formula for the arc length of a circle with central angle, θ, in degrees.

$\textit{Arc Length}=\dfrac{\theta}{360^{\circ}}\cdot 2\pi r$

Replace 360° with 2π radians.

$\dfrac{\theta}{360^{\circ}}=\dfrac{\theta}{2\pi}$

Replace the angle ratio in degrees with the angle ratio in radians.

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3 years ago

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3 years ago

1. Which of the following describes an argument based on the idea that if you have a few cases, you can draw a conclusion?

cluponka [151]

Answer:

B. Limited choice

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3 years ago

Read 2 more answers

The waking time of a student under common conditions is normally distributed with mean of 30 hours and a standard deviation of 5

Elina [12.6K]

Answer:

If the walking time is greater than or equal to 38.225 hours, than it exceeds 95% probability that is lie in top 5%.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 30 hours

Standard Deviation, σ = 5 hours

We are given that the distribution of waking time is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

We have to find the value of x such that the probability is 0.95

$P( X < x) = P( z < \displaystyle\frac{x - 30}{5})=0.95$

Calculation the value from standard normal z table, we have,

$\displaystyle\frac{x - 30}{5} = 1.645\\\\x = 38.225$

Thus, if the walking time is greater than or equal to 38.225 hours, than it exceeds 95% probability that is lie in top 5%.

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3 years ago