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Elenna [48]
3 years ago
11

Dolbear’s law states the relationship between the rate at which snow a tree crickets chirp and the air temperature of their envi

ronment the formula is T = 50+ N - 40 over 4 where T is a temperature in degrees Fahrenheit and N is a number of chirps per minute if N = 66 find the temperature in degrees Fahrenheit. T
Mathematics
1 answer:
STatiana [176]3 years ago
8 0

Answer:

T=76

Step-by-step explanation:

If the formula is T=50+N-40 and N=66 then you just substitute 66 in for N then you have T=50+66-40 where as T=76

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An English professor assigns letter grades on a test according to the following scheme. A: Top 15% of scores B: Scores below the
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Answer:

59 to 66

Step-by-step explanation:

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Standard Deviation = \sigma = 9.6

According to the given data, following is the range of grades:

Grade A: 85% to 100%

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So, the grade D will be given to the students from 6% to 19% scores. We can convert these percentages to numerical limits using the z scores. First we need to to identify the corresponding z scores of these limits.

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The formula for z score is:

z=\frac{x-u}{\sigma}

For z = -1.56, we get:

-1.56=\frac{x-74.2}{9.6}\\\\ x = 59

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-0.88=\frac{x-74.2}{9.6}\\\\ x = 66

Therefore, a numerical limits for a D grade would be from 59 to 66 (rounded to nearest whole numbers)

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3 years ago
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Answer:

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Step-by-step explanation:

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