The slope of the line represents the unit rate true or false

1 answer:

8 0

True. For example, if you pay $1 for every 5 apples the slope would either be 1/5 or 5/1 depending on if the number of apples represents x or y.

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A physical fitness association is including the mile run in its secondary school fitness test. The time for this event for boys

Ierofanga [76]

Answer:

A) 0.0107

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Mean of 440 seconds and a standard deviation of 40 seconds.

This means that $\mu = 440, \sigma = 40$

Find the probability that a randomly selected boy in secondary school can run the mile in less than 348 seconds.

This is the p-value of Z when X = 348. So

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{348 - 440}{40}$

$Z = -2.3$

$Z = -2.3$ has a p-value of 0.0107, and thus, the correct answer is given by option A.

6 0

3 years ago

I WILL GIVE BRAINLIEST TO WHOEVER ANSWERS ALL 5 QUESTIONS AND I WILL ALSO GIVE 11 POINTS. PLEASE HELP ME I NEED IT SO MUCH.

balandron [24]

1. (-5,-11)
2. C, reflected across x-axis then translated.
3. A’(-1,7), B’(-4,6), C’(-2,2)
4. C’(3,-4)
5. B, rotates 90 counter clockwise and then translate

(if any of these are wrong i’m sorry! :<)

7 0

3 years ago

Mrs. Clever mixes 1.24 liters of red paint with 3 times as much blue paint to make purple paint. She pours the paint equally int

Contact [7]

Amount of blue paint = 1.24 x 3
= 3.72
amount of blue paint in each container = 3.72/5
= 0.744

0.744 litres of blue paint is in each container.

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3 years ago

Write 0.003 as the product of a whole number and a power of 10

Arte-miy333 [17]

3 × $10^{-3}$