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Digiron [165]
3 years ago
15

Jerry pays $1.40 per gallon for premium gasoline. He spends $16.80 and wants

Mathematics
1 answer:
muminat3 years ago
3 0

Answer:

let x be the total amount of gallons he bought

$16.80÷$1.40 = x

16.80÷1.40=12

x=12

Step-by-step explanation:

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3 years ago
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In an effort to estimate the mean of amount spent per customer for dinner at a major Lawrence restaurant, data were collected fo
larisa86 [58]

Answer:

The 99% confidence interval for the population mean is 22.96 to 26.64

Step-by-step explanation:

Consider the provided information,

A sample of 49 customers. Assume a population standard deviation of $5. If the sample mean is $24.80,

The confidence interval if 99%.

Thus, 1-α=0.99

α=0.01

Now we need to determine z_{\frac{\alpha}{2}}=z_{0.005}

Now by using z score table we find that  z_{\frac{\alpha}{2}}=2.58

The boundaries of the confidence interval are:

\mu-z_{\frac{\alpha}{2}}\times \frac{\sigma}{\sqrt{n} }\\24.80-2.58\times \frac{5}{\sqrt{49}}=22.96\\\mu+z_{\frac{\alpha}{2}}\times \frac{\sigma}{\sqrt{n} }\\24.80+2.58\times \frac{5}{\sqrt{49}}=26.64

Hence, the 99% confidence interval for the population mean is 22.96 to 26.64

3 0
4 years ago
A baseball club pays a vendor $135 per game for selling bags of peanuts for $4.25 each. (a) Write a linear function that describ
qaws [65]

A linear function is a numerical relationship that forms a straight line in the Cartesian plane and represents the number of units that change a dependent variable, increase or decrease, compared to an independent one, in this case the profit P of the baseball club will be given by the number b of peanut bags sold multiplied by the sales value ($4,25), this less the payment of the seller's work day ($135), that is:

P = $4.25 b-$135

Answer

The linear function that describes the profit of the baseball club is

P = 4.25 b-135

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4 years ago
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KATRIN_1 [288]

Answer:

y = 2/5x - 5

Step-by-step explanation:

y = 2/5x - 5

(If you go to desmos.com you can graph any equation. It really helps. I'm doing similar things in class, I use it all the time.)

3 0
3 years ago
I'm tired just did over 10 works help please thank you
Dafna11 [192]

Part A. For finding the quartiles, box plot would be the best to represent the range of scores of the students.

Part B. The first step is to order the data: 2 3 3 3 3 4 5 6 7 8 14. Next, you will find the median. The median is 4. So, second the quartile = 4 The median splits the remaining data into two sets. The first set is 2 3 3 3 3 and the median of this set is 3. So, first quartile = 3. The second set is 5 6 7 8 14 and the median of this set is 7. And the third quartile = 7

I did this test today i know

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