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Vesna [10]
3 years ago
10

The variable t represents the temperature at 6 p.m. Which equation would best model the word problem below? The temperature at t

he summit of Mt. Washington dropped 19°F between 6 p.m. and 10 p.m. The temperature at 10 p.m. was –12°F. What was the temperature at 6 p.m.?
Mathematics
1 answer:
Contact [7]3 years ago
3 0
t - 19 = -12 

<span>answer is </span>C
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If 48 eggs are used in the cafeteria today but the number expected to be used tomorrow is 30% less than that, how many eggs are
Ray Of Light [21]

Answer:

34 eggs are expected to be used tomorrow

30% of 48 = 14

48-14=34

Step-by-step explanation:


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F(7) if f(x)=-3x-2 ​
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3 years ago
Fast-food restaurants spend quite a bit of time studying the amount of time cars spend in their drive-throughs. Certainly, the f
melisa1 [442]

Answer:

For the 99th percentile, we have X = 206 seconds.

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore 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 pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 138.5, \sigma = 29

99th percentile:

Value of X when Z has a pvalue of 0.99. So we use Z = 2.325

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

2.325 = \frac{X - 138.5}{29}

X - 138.5 = 29*2.325

X = 205.92 = 206

For the 99th percentile, we have X = 206 seconds.

4 0
2 years ago
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