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3 years ago

A runner starts from rest and accelerates uniformly to a speed of 8.0 meters per

Mathematics

1 answer:

ivanzaharov [21]3 years ago

4 0

2 m/s²

Step-by-step explanation:

Step 1:

Let the initial velocity be 0 m/s and the final velocity be 8 m/s and the time traveled is 4 s.

From the basic science,

Acceleration = ( Final Velocity - Initial Velocity) / Time

Step 2:

Acceleration = (8-0)/4

2 m/s²

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Radio= 7cm

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2 years ago

What is the opposite of squaring a number

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2 years ago

Read 2 more answers

Using the image above, what is the measure of Angle J? Round to the nearest hundredth

Brilliant_brown [7]

Answer:

∠J = 31.06°

Step-by-step explanation:

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1 year ago

(-5, -5), 6x - y = 1

Musya8 [376]

Answer:

Step-by-step explanation:

6x - y = 1

6x - 1 = y.....rearrange

y = 6x - 1......slope is 6. A parallel line will have the same slope.

y = mx + b

slope(m) = 6

(-5,-5)...x = -5 and y = -5

now we sub and find b, the y int

-5 = 6(-5) + b

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2 years ago

A grocery stores studies how long it takes customers to get through the speed check lane. They assume that if it takes more than

Reptile [31]

The probability that a randomly selected customer takes more than 10 minutes will be 8.38%

Explanation

The average or mean $(\mu)$ is 8.56 minutes and standard deviation $(\sigma)$ is 1.04 minutes.

Formula for finding the z-score is: $z= \frac{X-\mu}{\sigma}$

So, the z-score for $X=$ 10 minutes will be.....

$z(X=10)=\frac{10-8.56}{1.04}=\frac{1.44}{1.04}=1.3846... \approx 1.38$

Now, according to the standard normal distribution table, $P(z$ . So.....

$P(X>10)=P(z>1.38)= 1-P(z$

So, the probability that a randomly selected customer takes more than 10 minutes will be 8.38%

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3 years ago