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Pavel [41]
2 years ago
7

Plssssssssssssss help this quiz is timed Tomaz realized that the tip of a second hand on a clock rotates about the center of the

clock. He watched the second hand rotate around the center of the clock for 15 seconds. Which describes the rotation he observed?
270 degrees clockwise rotation


90 degrees clockwise rotation

180 degrees rotation

90 degrees counterclockwise rotation
Mathematics
2 answers:
timurjin [86]2 years ago
5 0

Answer:

90 degrees clockwise rotation

Step-by-step explanation:

Because

Juli2301 [7.4K]2 years ago
4 0

Answer:

90 degrees

Step-by-step explanation:

90 degrees hhgffdfkgdf

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Appreciate answers and any help!
Savatey [412]

To find the expected value of the distribution, we multiply each outcome by it's probability. Doing this, we get that the expected value of defects on a skateboard is of \frac{4}{25}.

Outcomes and probabilities:

0 defects, 9/10 probability

1 defect, 1/20 probability

2 defects, 1/25 probability

3 defects, 1/100 probability.

Expected value:

E(X) = 0\frac{9}{10} + \frac{1}{20} + 2\frac{1}{25} + 3\frac{1}{100} = \frac{1}{20} + \frac{2}{25} + \frac{3}{100} = \frac{5 + 8 + 3}{100} = \frac{16}{100}

Dividing both numerator and denominator by 4:

\frac{4}{25}

Thus, the expected value of defects on a skateboard is of \frac{4}{25}.

A similar problem is given at: brainly.com/question/23156292.

4 0
3 years ago
A cat gave birth to 4 kittens. Three of the kittens had different masses between 147 and 159 kg and one kitten had a mass of 57k
Marizza181 [45]

Answer:

Both the mean and median will increase, but the mean will increase by more than the median.

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Ellie uses 12.5 pounds of potatoes to make mashed potatoes. She uses one-tenth as many pounds of butter as potatoes. How many po
Rzqust [24]
She uses 1.25 pounds of butter.
12.5 (1/10) = 1.25
3 0
3 years ago
Read 2 more answers
Geometry Help Pleaaseee~
torisob [31]
It's supposed to be Triangle ZXY but it isnt in the choices.
4 0
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Solve using common logs or natural logs
luda_lava [24]
Hope this helps! sorry if it is kind of dark

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