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Andreas93 [3]
3 years ago
11

Write a two-step equation involving multiplication and subtraction thathas a solution of x = 7.​

Mathematics
1 answer:
yan [13]3 years ago
3 0

Answer:

One answer: 3(2x + 10) - 2(x - 2) - 59  = 3

Step-by-step explanation:

First, break up 7 into two parts:

3 + 4 = 7

Then, replace 7 with x:

3 + 4 = x

Then, create more complexity:

3 + 21 - 14 = x

21-14 = x - 3

3(x) - 2(x) - x = 3

Drop the last -x and add a constant:

3(2x + 10) - 2(x - 2) - 59  = 3

Proof:

3(2(7) + 10) - 2(7 - 2) - 59 = 3

3(14 + 10) - 2(5) - 59 = 3

3(24) - 10 -

72 - 10 - 59 = 3

62 - 59 = 3

3 = 3

Hope this helps! Have an awesome day! :-)

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Snowcat [4.5K]

Answer:

The average number of customers in the system is 3.2

Step-by-step explanation:

The average number of customes in the system is given by:

L = \frac{\lambda^{2}}{\mu(\mu - \lambda)}

In which

\lambda is the number of arirvals per time period

\mu is the average number of people being served per period.

The number of arrivals is modeled by the Poisson distribution, while the service time is modeled by the exponential distribution.

Customers arrive at the stand at the rate of 28 per hour

This means that \lambda = 28

Service times are exponentially distributed with a service rate of 35 customers per hour.

This means that \mu = 35. So

The average number of customers in the system (i.e., waiting and being served) is

L = \frac{\lambda^{2}}{\mu(\mu - \lambda)}

L = \frac{28^{2}}{35(35 - 28)} = 3.2

The average number of customers in the system is 3.2

4 0
4 years ago
(5x – 3y) (3x + 4y)​
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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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3 years ago
iris charges a fee for her consulting services plus an hourly rate that is 1 1/5 times her fee on a 7 hour job and iris charged
Veronika [31]
Based on the given problem above, here is the solution.
Given: Iris's charge: 470
           1 1/5 times her fee: additional hourly rate
           ? = fee for an hourly rate
What we need to do first is divide 470 by 7 hours, so 470/7 = 67.143/hour.
So Iris's per hour is 67.143 without the additional rate.
Now, let's look for the 1 1/5 of 470. 1 1/5 is equal to 1.2. So 470 x 1.2 = 564.
To get the total fee of her hourly rate, we add 67.143 and 564, so Iris's hourly rate then is 631.143 or 631.14.
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4 years ago
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Answer:

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