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Naily [24]
2 years ago
6

18 x - 54 xy + 36y please help me send the answer As soon as possible

Mathematics
1 answer:
lubasha [3.4K]2 years ago
7 0

18(X-3xy+2y)

Step-by-step explanation:

hope it helps just take 18 common mark me as the brainliest

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Is

Step-by-step explanation:

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Write an equation for the description.
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Answer:

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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
2 years ago
PLEASE HELP ME!! I NEED HELP WITH THIS
Gala2k [10]

Answer: It is answer C.

Step-by-step explanation: Because of the location and angle of the line, it intersects at 9 on the y axis and 1 on the x, therefore giving you 9 over 1

3 0
2 years ago
Ean: jenny wants to make three pillow cases using fourteen feet of fabric. She plans to use an equal amount of fabric for each p
Veseljchak [2.6K]

Answer:

Approximately 4.67 feet of fabric is required for one pillow case.

Step-by-step explanation:

We are given the following in the question:

Number of pillow cases to be made by Jenny = 3

Amount of fabric Jenny has = 14 feet

Each pillow case use same amount of fabric.

Amount of fabric used to make 1 pillow case =

=\dfrac{\text{Amount of fabric}}{\text{Number of pillow cases}}\\\\=\dfrac{14\text{ feet}}{3}\\\\\approx 4.67\text{ feet}

Thus, approximately 4.67 feet of fabric is required for one pillow case.

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3 years ago
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