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Masja [62]
3 years ago
7

Two cars leave the same place at the same time, but drive in opposite directions along a straight road. One car averages 55 mi/h

and the other averages 65 mi/h. In how many hours will they be 250 miles apart?
Mathematics
1 answer:
taurus [48]3 years ago
4 0

Answer:

The answer is 2.083 repeating.

Step-by-step explanation:

55+65=120

250/120=2.083 repeating.

55*2.083=114.565

65*2.083=135.395

114.565+135.395=249.96

Which I didn't keep all the 3's, so that is why it is 249.96

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Answer:

1-x=179

Step-by-step explanation:

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2 years ago
A taxi driver estimates that his earnings are $240 on a fine day and $320 on a wet day. What are his expected earnings on a day
castortr0y [4]
Probability of raining=0.45 
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The expected earning will be given by:
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3 years ago
The quadratic equation x2 + mx + q = 0, where m and q are real numbers, has the complex root a + bi.?
Sphinxa [80]
Remember the quadratic formula determinant?
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So for this problem, m^2 - 4q is the determinant, and if less than 0, is complex.

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3 0
3 years ago
An automobile manufacturer claims that its van has a 44.3 miles/gallon (MPG) rating. An independent testing firm has been contra
natulia [17]

Step-by-step explanation:

H0: u = 44.3

Hi : u# 44.3

Z1-0.05/2

Z1-0.025

Z0.975 = 1.96

Z = x-u/s.d/√n

Z= 44.4 -44.3/2.6/√130

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Since the calcalculated value is less than the table value and does not fall in the rejection region we fail to reject the null hypothesis

7 0
3 years ago
Jim Panzee got in a taxi that charges a $10 flat fee plus $3 per mile traveled. Write an equation that shows the relationship be
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Answer:

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Step-by-step explanation:

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5*3=$15

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8 0
2 years ago
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