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svlad2 [7]
3 years ago
7

A truck can be rented from Company A for $120 a day plus $0.80 per mile. Company B charges $50 a day plus $0.90 per mile to rent

the same truck. Find the number of miles in a day at which the rental costs for Company A and Company B are the same.​
Mathematics
2 answers:
Bond [772]3 years ago
7 0

Answer:

700

Step-by-step explanation:

Jlenok [28]3 years ago
4 0

Answer:

700 miles driven in a day

Step-by-step explanation:

Create an equation to represent the situation, where x is the number of miles.

0.8x + 120 = 0.9x + 50

Solve for x:

120 = 0.1x + 50

70 = 0.1x

700 = x

So, the rental costs will be the same at 700 miles driven in a day.

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Viefleur [7K]

Answer:

122 in²

Step-by-step explanation:

Applying,

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Where S.A = Surface area of the prism, b = base of the triangle, h = height of the triangle, l = lenghth of the prism

From the question,

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7 0
2 years ago
Determine the sample size required to estimate the mean score on a standardized test within 5 points of the true mean with 99% c
Elodia [21]
Given:
Accuracy = 5
99% confidence interval
s = 17, sample standard deviation.

Because the population standard deviation is unknown, we should use the Student's t distribution.
The accuracy at the 99% confidence level for estimating the true mean is
t*( \frac{s}{ \sqrt{n} )}
where
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t* is provided by the t-table.

That is,
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√n = (17t*)/5 = 3.4t*
n = 11.56(t*)²

A table of t* values versus df (degrees of freedom) is as follows.
Note that df = n-1.

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------ --------  -------
1001 1000  2.581
  101    100  2.626
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   61      60  2.660

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Try n = 1001 => df = 1000.
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Try n = 81 => df = 80
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We conclude that n = 81.

Answer: The sample size is 81.

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3 years ago
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inn [45]

Answer:

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Step-by-step explanation:

Aight, let's hop to it:

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and boom

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