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oksano4ka [1.4K]
3 years ago
15

A plumber charges $15 for a service call plus $20 per hour of service. Write an equation in slope-intercept form for the cost, y

, after x hours of service. What will be the total cost for 8 hours of work?
Select the correct equation and solution (you should pick two answers.)

Y=15x + 20
Y= 20x + 15
140 dollars
175 dollars
Mathematics
1 answer:
artcher [175]3 years ago
6 0

Answer:

Y=20x+15 & 175 dollars

Step-by-step explanation:

The word problems says $20 per hour, so that means 20 times the amount of hours. If yo multiply 20 times 8 you get 160. Add 15 to 160, you end up with $175.

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Selena babysits on the weekends. The equation y = 12x represents the amount of money she earns. What is the constant of proporti
Allushta [10]

Answer:

12

Step-by-step explanation:

To find constant: y=k/x

the constant there is only 12

the answer is 12

y=12

   ---

    1

y=12

7 0
3 years ago
Read 2 more answers
Cos 0 = 12/13. Find sin 0.<br> A. 5/12<br> B. 12/5<br> C. 13/12<br> D. 5/13
andreyandreev [35.5K]

Answer:

Sine θ = 5/13

Step-by-step explanation:

From the question given above, the following data were obtained:

Cos θ = 12/13

Sine θ =?

Next, we shall determine the opposite. This can be obtained as follow:

Cos θ = Adjacent /Hypothenus

Cos θ = 12/13

Adjacent = 12

Hypothenus = 13

Opposite =?

Hypothenus² = Opposite² + Adjacent²

13² = Opposite² + 12²

169 = Opposite² + 144

Collect like terms

169 – 144 = Opposite²

25 = Opposite²

Take the square root of both side

Opposite = √25

Opposite = 5

Finally, we shall determine the Sine θ. This can be obtained as follow:

Opposite = 5

Hypothenus = 13

Sine θ =.?

Sine θ = Opposite / Hypothenus

Sine θ = 5/13

8 0
3 years ago
What is the best first step in solving the equation 3 + = 5?
Dafna1 [17]

Answer:

5 - 3

Step-by-step explanation:

easy way to find out

5-3= your answer in one step

3 0
2 years ago
If y varies inversely as x and y=32 when x=3, find x when y=15
deff fn [24]
Y=kx, k is not equal to 0
when y=32,x=3, 32=3k
                           k=32/3
so y=32/3*x
when y=15, 15=32/3*x
                     x=45/32

5 0
3 years ago
If a point at (3,-4) is reflected over the X-axis to form a new point What will be the coordinate of the new point? (-3,-4), (3,
ira [324]

Answer:

(3,4) because only the y would change when it is being reflected over the x axis :)

Step-by-step explanation:

5 0
3 years ago
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