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2 years ago

Help if u don’t mind A)117 B)115 C)130

Mathematics

1 answer:

Alexxandr [17]2 years ago

6 0

Answer:

I believe the answer i B

Step-by-step explanation:

I'm not 100% sure so please correct me if im wrong, sorry if i am

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Solve, using linear combination.

Bingel [31]

Multiply the first equation by -1 to get -4x - y = --5

Then add the second equation 3x + y = 3

+ ____________

-x = -2 or x = 2

then plug in 2 for x in one of the equations and solve for y 4(2) + y = 5

8 + y = 5

Subtract 8 from both sides y = -3

So x = 2, y = -3 or (2,-3)

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3 years ago

|2k+3|=7<br>absolute value

faust18 [17]

Answer:

Step-by-step explanation:

2k+3=7

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3 years ago

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What is 12+ n means in verbal expression

Mandarinka [93]

the sum of 12 and a number/n

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3 years ago

a rabbit's fur grows at a rate of 5/2 per month. How many months will it take for the rabbit's fur to grow 15/4 inches

UkoKoshka [18]

The answer is 1.5 months

explanation:

5/2 = 2.5

15/4 = 3.75

2.5 per month

3.75 per x months

x = (3.75×1)/2.5

x = 3.75/2.5

x = 3/2 = 1.5 months

3 0

3 years ago

5. Arrival problems usually follow a Poisson distribution, but in this case the time between arrivals of customers at a bank dur

Finger [1]

Answer:

0.5 or 50%

Step-by-step explanation:

For any given value of 'x' representing the time between arrivals of two customers. If 0 < x <120, then the cumulative distribution function is:

$\frac{x-0}{120-0}=\frac{x}{120}$

Therefore, the probability that the time between the arrivals of two customers will be more than 60 seconds is determined by:

$P(X>60) = 1 -\frac{60}{120}\\P(X>60) = 0.5$

The probability is 0.5 or 50%.

5 0

3 years ago