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Aleks [24]
3 years ago
9

A car traveled 75% of the way from town A to town B at an average speed of 50 kmph. The car travels at an average speed of S kmp

h for the remaining part of the trip. The average speed for the entire trip was 40 kmph. What is S?,
Mathematics
1 answer:
hjlf3 years ago
6 0
<span>the car would have been traveling at 10kmph for the remaining 25 percent of the trip. 50 times 3 (25 percent segments) is 150, use math to solve for four 25 percent segments.</span>
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A researcher is studying the monthly gross incomes of drivers for a ride sharing company. (Gross incomes represent the amount pa
Reptile [31]

Answer:

The histogram of the sample incomes will follow the normal curve.

Step-by-step explanation:

According to the Central Limit Theorem if we have an unknown population with mean <em>μ</em> and standard deviation <em>σ</em> and appropriately huge random samples (<em>n</em> > 30) are selected from the population with replacement, then the distribution of the sample mean will be approximately normally distributed.

In this case the researches wants to determine the monthly gross incomes of drivers for a ride sharing company.

He selects a sample of <em>n</em> = 200 drivers and ask them their monthly salary.

As the sample selected is quite large, i.e. <em>n</em> = 200 > 30, the central limit theorem can be applied to approximate the sampling distribution of sample mean by the Normal distribution.

Thus, the histogram of the sample incomes will follow the normal curve.

8 0
3 years ago
Please help me I need help
Llana [10]

9514 1404 393

Answer:

  F.  x ≤ -5

Step-by-step explanation:

Translating the diagram to more conventional symbols, we have ...

  4x +12 ≤ -8

  4x ≤ -20 . . . . . . . subtract 12 from both sides

  x ≤ -5 . . . . . . . . . divide both sides by 5

7 0
3 years ago
Plese help me its timed
Nadusha1986 [10]

Answer:

(3,2) I think

Step-by-step explanation:

X= 3

Y=2

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3 0
3 years ago
Noel has rowing lessons every 5 days and guitar lessons every 6 days. If he had both lessons on the last day of the previous mon
bixtya [17]

Answer:

Since every 30 days  he  wil have both lessons on the same day , and  he already  had both lessons on the last day of the previous month, that means that the day 30  the current month   he  wil have both lessons on the same day (It may be the last day if the month has 30 days or it may not be the last day if the month has 31 days)

Step-by-step explanation:

Lets find the least common factor of 5 and 6

Multiples of 5

5  10  15  20  35  30  35  40......

Multiples of 6

6  12  18  24  30 36  

LCF of 5 and 6 = 30

Every 30 days  he  wil have both lessons on the same day

3 0
3 years ago
Find 30% decrease from 95<br> 68.40<br> 63.20<br> 66.50
IgorC [24]

Answer:

66.50

stay home and be safe

7 0
3 years ago
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