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enyata [817]
3 years ago
9

Ray is reading a book of 150 pages at a constant rate of 25 pages per hour. Let’s consider the following function: the pages lef

t to read L as a function of time passed since the beginning of the reading T. Tell what is the domain and the range of this function?
PLEASE I NEED HELP WHO EVER AWNSERS THIS WILL GET A BRAINLIEST


Tell what is the domain and the range of this function?
Mathematics
1 answer:
sineoko [7]3 years ago
4 0

Question:

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47

Step-by-step explanation:

add all the numbers and divide them by however many numbers there are.

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A fruit seller bought 75 mangoes and 125 apples from vendor. Find the ratio mangoes to apples bought.
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I am pretty sure the answer is 3:5

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To go on the class trip, chang needs at least $125. he has saved $45, and he makes $7 an hour at his job. what is the minimum nu
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The total amount that Chang will received from his wages is the product of his hourly wage times the number of hours he has worked (n). His total savings should not be less than $125. The equation that best describes the situation is, 
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TRUE
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run me my points .

Step-by-step explanation:

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2 years ago
Two competing headache remedies claim to give fast-acting relief. An experiment was performed to compare the mean lengths of tim
DaniilM [7]

Answer:

t = 0.875

Step-by-step explanation:

Given

<u>Brand A</u>            <u>Brand B</u>

n_ 1= 12               n_2 = 12

\bar x_1 = 21.8            \bar x_2 = 18.9

\sigma_1 = 8.7              \sigma_2 = 7.5

Required

Determine the test statistic (t)

This is calculated as:

t = \frac{\bar x_1 - \bar x_2}{s\sqrt{\frac{1}{n_1} +  \frac{1}{n_2}}}

Calculate s using:

s = \sqrt{\frac{(n_1-1)*\sigma_1^2+(n_2-1)*\sigma_2^2}{n_1+n_2-2}}

The equation becomes:

s = \sqrt{\frac{(12-1)*8.7^2+(12-1)*7.5^2}{12+12-2}}

s = \sqrt{\frac{1451.34}{22}}

s = \sqrt{65.97}

s = 8.12

So:

t = \frac{\bar x_1 - \bar x_2}{s\sqrt{\frac{1}{n_1} +  \frac{1}{n_2}}}

t = \frac{21.8 - 18.9}{8.12 * \sqrt{\frac{1}{12} + \frac{1}{12}}}

t = \frac{21.8 - 18.9}{8.12 * \sqrt{\frac{1}{6}}}

t = \frac{21.8 - 18.9}{8.12 * 0.408}}

t = \frac{2.9}{3.31296}}

t = 0.875

3 0
3 years ago
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