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zaharov [31]
3 years ago
10

PLEASE HELP !! ILL GIVE BRAINLIEST !! 100 POINTS

Mathematics
2 answers:
WITCHER [35]3 years ago
3 0

Answer:

7 is the answer

Step-by-step explanation:

63 ÷ 7 = 7 therefore it's 7

DiKsa [7]3 years ago
3 0

Answer: M=9. Divide 63/7

Step-by-step explanation:

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HELP ME PLEASE!!
LUCKY_DIMON [66]

Using a system of equation, we have that:

a)

  • x, which is the cost of on-site service.
  • y, which is the cost of at-store service.
  • z, which is the cost of by-mail service.

b)

The system is:

x = 3y

z = y - 10

15x + 40y + 5z = 3100

c)

The cost of one on-site repair service is of $90.

Item a:

The variables are:

  • x, which is the cost of on-site service.
  • y, which is the cost of at-store service.
  • z, which is the cost of by-mail service.

Item b:

On-site service costs <u>3 times as much as at-store service</u>, thus:

x = 3y

By mail service costs <u>$10 less than at-store</u>  service, thus:

z = y - 10

Last week, the shop completed <u>15 services on-site, 40 services at-store, and 5 services by mail for total sales of $3100</u>, thus:

15x + 40y + 5z = 3100

The system is:

x = 3y

z = y - 10

15x + 40y + 5z = 3100

Item c:

  • The cost of one on-site repair service is x.
  • First, replacing the first two equations into the third, we find y, and then with it we find x.

15x + 40y + 5z = 3100

15(4y) + 40y + 5(y - 10) = 3100

60y + 40y + 5y = 3150

105y = 3150

y = \frac{3150}{105}

y = 30

Then

x = 3y = 3(30) = 90

The cost of one on-site repair service is of $90.

A similar problem is given at brainly.com/question/24823220

3 0
3 years ago
it takes Sarah 50 minutes to walk to her friends house 1 3/4 miles away. What is her walking pace in miles per hour?
RideAnS [48]
50 minutes= 5/6 hr

(1 3/4 miles)/ (5/6 hr)= 2.1 miles/hr

Hope this would help~
3 0
3 years ago
Read 2 more answers
How many movies are 120 minutes or less in length?
borishaifa [10]

The movies of 120 min or less than 120 mins are 100

Further explanation:

A histogram is a visual representation of data.

In the given histogram we can see that

5 movies are 0 to 30 minutes, 10 movies are 31 to 60 minutes, 30 movies are 61 to 90 minutes, 55 movies are 91 to 120 minutes, and 15 movies are over 120 minutes.

In order to find the number of movies which are 120 minutes long or less than 120 minutes we will add up all the number of movies with 120 length and less than that

So,

No.\ of\ movies\ 120\ min\ long\ or\ less\ than\ that = 5+10+30+55\\=100\ movies

The movies of 120 min or less than 120 mins are 100

Keywords: Histogram, reading histograms

Learn more about histograms at:

  • brainly.com/question/7439913
  • brainly.com/question/647573

#LearnwithBrainly

6 0
3 years ago
Which expression is equivalent to 5(4k+7)?<br><br> A. 5(7+4k)<br> B.7(5k+4)<br> C.35k+20<br> D.4k+35
Nata [24]

Answer:

A. 5(7+4k) = 35+ 20k

This is the same as 5(4k+7)

20k+35 is equal to 35+20k

5 0
3 years ago
The table shows the percent of successful unmanned missions to Mars by each country or agency to the nearest tenth of a percent.
suter [353]

Answer:

C.) <u>India, the European Space Agency, and Other launched a total of 4.5 percent of the successful missions.</u>

<u></u>

<u>EDGE2021</u>

4 0
3 years ago
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