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4 years ago

5

Which word sentence represents the equation 4y = y + 9 ?

2 answers:

Amanda [17]4 years ago

8 0

B. four times the value of y = the value of y+9

Anna11 [10]4 years ago

5 0

B becayse 4 times y = y increased by 9

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2x=4 what does x equal?

alex41 [277]

<span>2x=4
Divide 2 on both sides so that the only thing remaining on the left side is the variable x.
Final Answer: x = 2</span>

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3 years ago

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A student solved the following problem and made an error:

liubo4ka [24]

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3 years ago

A blueprint for a garage has a scale of 1.5 cm to 3 cm. on the blueprint, the lenght of one wall is 8cm. If w represents the len

Alenkasestr [34]

w = 16 cm, since 1.5:3 is a 1:2 ratio, 8 x 2 is 16

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3 years ago

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Find the exact value under the given conditions.

Leni [432]

Answer:
I think is B

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3 years ago

3. Students arrive at an ATM machine in a random pattern with an average inter-arrival time of 3 minutes. The length of transact

svp [43]

Answer:

The probability that a student arriving at the ATM will have to wait is 67%.

Step-by-step explanation:

This can be solved using the queueing theory models.

We have a mean rate of arrival of:

$\lambda=1/3\,min^{-1}$

We have a service rate of:

$\mu=1/2\,min^{-1}$

The probability that a student arriving at the ATM will have to wait is equal to 1 minus the probability of having 0 students in the ATM (idle ATM).

Then, the probability that a student arriving at the ATM will have to wait is equal to the utilization rate of the ATM.

The last can be calculated as:

$P_{n>0}=\rho=\dfrac{\lambda}{\mu}=\dfrac{1/3}{1/2}=\dfrac{2}{3}=0.67$

Then, the probability that a student arriving at the ATM will have to wait is 67%.

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4 years ago