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Marina CMI [18]
3 years ago
8

If r is a linear function with the slope that is not equal to zero which of the following is always true of its inverse function

Mathematics
1 answer:
elena-s [515]3 years ago
6 0
Let's make up a linear function:  y = mx + b.

Find its inverse:

1) interchange x and y:   x = my + b                      x-b
2) solve this result for y:        my = x - b, or   y = ----------
                                                                                m
                             -1
3) replace y by  f      (x)

So long as m is not zero, this function is defined for all x.
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Answer:

A

Step-by-step explanation:

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The answer is -5x^4 -14


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In order for Brady to earn a B in his biology course, his test scores must average at least 80%. On the first 5 tests, he has an
larisa [96]

Hey there! I'm happy to help!

There were 5 tests needed to make an average of 77. These numbers have to add up to 385 (77×5) because that is what you divide by 5 to find the average which is 77.

Now, we want to find an average of 80 with 6 numbers. We multiply 80 and 6, showing us that the sum of these 6 numbers must be 480. Since 5 of these numbers are the same as with the 77 average, we know that one test score (the one Brady needs to get) is added to 385 to give us 480.

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kenny6666 [7]

Answer:

a. (3x² - 2x - 5) units²

b. (x² - x) units²

c. (2x² - x - 5) units²

Step-by-step explanation:

a. Area of the frame = L*W

L = (x + 1) units

W = (3x - 5) units

Area of the frame = (x + 1)(3x - 5)

Apply distributive property

x(3x - 5) +1(3x - 5)

3x² - 5x + 3x - 5

Area of the frame = (3x² - 2x - 5) units²

b. Area of the picture = L*W

L = x units

W = (x - 1) units

Area of the picture = x(x - 1)

Apply distributive property

= x² - x

Area of picture = (x² - x) units²

c. Area of the frame that surrounds the picture = area of frame - area of picture

= (3x² - 2x - 5) - (x² - x)

= 3x² - 2x - 5 - x² + x (distributive property)

Add like terms

= 3x² - x² - 2x + x - 5

= 2x² - x - 5

Area of the frame that surrounds the picture = (2x² - x - 5) units²

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Serggg [28]

Answer: John is 69 inches tall.

Step-by-step explanation:

There are 12 inches in each foot.

5x12=60

12x3/4= 9

60+9= 69

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