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levacccp [35]
3 years ago
6

An air conditioning technician charged Robert $77.25 to repair his air conditioning system after 3 hours of work. The technician

charged the same rate for each hour of work. Which diagram represents the constant rate of change for this situation?
Mathematics
1 answer:
agasfer [191]3 years ago
5 0

Answer:B

Step-by-step explanation:

He charged the man $25.75 for each hour and he worked for 3 hours so multiply $25.75 x 3 = $77.25

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Prove that lines 3x-4y=12 and 3y=12-4x are perpendicular.
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Answer:

see explanation

Step-by-step explanation:

If 2 lines are perpendicular then the product of their slopes equals - 1

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Consider the given equations

3x - 4y = 12 ( subtract 3x from both sides )

- 4y = - 3x + 12 ( divide terms by - 4 )

y = \frac{3}{4} x - 3 ← in slope- intercept form

with slope m = \frac{3}{4}

3y = 12 - 4x = - 4x + 12 ( divide terms by 3 )

y = - \frac{4}{3} x + 4 ← in slope- intercept form

with slope m = - \frac{4}{3}

Then

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Since the product of their slopes = - 1 then the lines are perpendicular

3 0
3 years ago
The area of the top of the rectangle table is 323 square feet. If the length of the table is19 feet what is the width of the tab
Anit [1.1K]
A=lw, right? So you would take what you know, 323 being a and 19 being l. 323=19w
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323/19=w
17 feet=w
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A restaurant use 8 1/4 pounds of carrots to make 6 carrot cakes. Frank wants to use the same recipe. How many pounds of carrots
timofeeve [1]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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