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frez [133]
3 years ago
5

Traffic police measure the speed of the incoming vehicles. The speeds are normally distributed with a mean of 70 km/hr and a sta

ndard deviation of 10 km/hr. What percentage of vehicles would-be travelling at random has a speed less than 80 Km/hr?
Mathematics
1 answer:
Varvara68 [4.7K]3 years ago
6 0

Answer:

Ayayai Company has an old factory machine that cost $63,000. The machine has accumulated depreciation of $35,280. Ayayai has decided to sell the machine. (Credit account titles are automatically indented when amount is entered. Do not indent manually. If no entry is required, select "No Entry" for the account titles and enter 0 for the amounts.)

Step-by-step explanation:

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What is the median of this data set?<br> 22, 37, 49, 15, 12
blsea [12.9K]

Answer:

the answer is 22

Step-by-step explanation:

12,15,22,37,49

since 22 is in the middle its the median (make sure you put the #'s from least to greatest)

6 0
1 year ago
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THIS IS URGENT. The table above shows the number of students that prefer a particular type of pizza. If there are 25 students
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40%

Step-by-step explanation:

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If 2x+7=12, find the value of 2x+10
Tju [1.3M]

Answer:

x = 5

Step-by-step explanation:

divide both sides by 2

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3 years ago
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a person bought two watches for 2500, she sold one of them at 10% profit &amp; the other one at 4% loss. what was her gain or lo
Zepler [3.9K]

Answer:

profit : RS 150 and profit % : 3%

Step-by-step explanation:

for profit 10% for loss 4%

s.p will be 2750. s.p will be 2400

Total s.p : 2750 +2400. total s.p : 5150

profit = s.p-c.p. profit%=?

=5150-5000. profit = p /c.p × 100

=150 = 150/5000×100

= 3%

8 0
2 years ago
The length of the rectangle is 7/(x-4) feet, while its width is 5/x feet. Find its perimeter. Please help asap!!!!! :(
damaskus [11]

The perimeter would be (24x - 40)/(x^2 - 4x).

In order to find this, first double the length and width as you would to find any perimeter.

7/(x - 4) * 2 = 14/(x - 4)

5/x * 2 = 10/x

Now to add those together, we need to give them common denominators. In order to do that with the first one, we need to multiply by x/x

14/(x - 14) * x/x = 14x/(x^2 - 14x)

Then we can do the same with the second part by multiplying by (x - 4)/(x - 4)

10/x * (x - 4)/(x - 4) = (10x - 40)/(x^2 - 14x)

Now we can add the two together

14x/(x^2 - 14x) + (10x - 40)/(x^2 - 14x) = (24x - 40)/(x^2 - 14x)

3 0
3 years ago
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