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Vlad1618 [11]
2 years ago
9

The video streaming service that you want to use is represented with the equation below, where y represents the the total monthl

y cost of the service and x represents the number of videos you plan to stream each month
if the x is 0,5,8,10,30 and y is 5,11.25, 15,17.5, 42.5what does the initial value represent in the problem and the rate of change
Mathematics
1 answer:
Kisachek [45]2 years ago
4 0

The coefficients of the linear relation are:

  • Initial value = 5
  • Rate of change = 1.25

<h3>How to find a linear equation?</h3>

A general linear equation is given by:

y = a*x + b

Where a is the slope (also called the rate of change) and b is the y-intercept (also called the initial value).

If we know that the line passes through two points (x₁, y₁) and (x₂, y₂), then the slope is given by:

a = \frac{y_2 - y_1}{x_2 - x_1}

Here we will use only need the first two pairs from the table (you can use any two you want).

(0, 5)

(5, 11.25)

From the first one, you can see that when x = 0, y = 5.

Replacing that in the general linear equation we get:

5 = a*0 + b

5 = b

So we already know the initial value. Now we can use these two points to get the slope (rate of change).

a = \frac{11.25 - 5}{5 - 0} = 1.25

Then we can conclude:

  • Initial value = 5
  • Rate of change = 1.25

If you want to learn more about linear equations, you can read:

brainly.com/question/4074386

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An assembly line inspector inspected 340 machine parts. 323 of the parts passed inspection. What percent of the machine parts di
tester [92]

Answer:

5% did not pass inspection

Step-by-step explanation:

Given

Inspected= 340

Passed = 323

Required

Determine the percentage of parts that didn't pass inspection.

First, we need to calculate the number of those that didn't pass inspection.

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Failed = 340 - 323

Failed = 17

Next, we calculate the percentage as follows:

\% = \frac{Failed}{Inspected} * 100\%

The above formula is derived by dividing the number of parts that didn't pass inspection by the total machine inspected, then multiplied by 100%

So:

\% = \frac{17}{340} * 100\%

\% = \frac{17 * 100\%}{340}

\% = \frac{1700\%}{340}

\% = 5\%

<em>5% did not pass inspection</em>

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