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stira [4]
3 years ago
5

A plumber charges $50 for a house call plus $40 for each hour worked. Let h represent the number of hours worked. Write an expre

ssion that shows how much the plumber charges for a job lasting h hours. Then find how much the plumber charge for a job lasting 3 hours.
Mathematics
1 answer:
Sonja [21]3 years ago
7 0

Answer:

x = 50 + 40h

Step-by-step explanation:

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Explain how finding 7x20 is similar to similar to finding 7x2000.then find each product
notka56 [123]
They are both similar because you just have to multiply 7 x 2 and then add the zeros. 7 x 20 is 140 and 7 x2000 is 14000
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4 years ago
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What is the slope of the line shown?
Olin [163]

By using two arbitrary points on the line, we can find the slope using the slope formula:

\frac{y.2 - y.1}{x.2 - x.1} = m

We'll use the points (0, 4) and (5, 1) for this.

1 - 4 / 5 - 0

-3 / 5

The slope of the line is -3/5.

4 0
3 years ago
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SIZIF [17.4K]

Answer:

110

Step-by-step explanation:

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8 0
3 years ago
What are the solutions to the equation x² + 16x + 14 = 0?
poizon [28]

Answer:

-8+5√2 and -8-5√2

Step-by-step explanation:

Given the expression x² + 16x + 14 = 0

USing the general formulas

x = -16±√16²-4(14)/2

x = -16±√256-56/2

x = -16±√200/2

x = -16±10√2/2

x = -8±5√2

Hence the required solutions are -8+5√2 and -8-5√2

3 0
3 years ago
The function f(x)=(x-5)^2 +2 is not one-to-one. Identify a restricted domain that makes the function one-to-one, and find the in
Anon25 [30]

We have been given a quadratic function f(x)=(x-5)^{2} +2 and we need to restrict the domain such that it becomes a one to one function.

We know that vertex of this quadratic function occurs at (5,2).

Further, we know that range of this function is [2,\infty).

If we restrict the domain of this function to either (-\infty,5] or [5,\infty), it will become one to one function.

Let us know find its inverse.

y=(x-5)^{2}+2

Upon interchanging x and y, we get:

x=(y-5)^{2}+2

Let us now solve this function for y.

(y-5)^{2}=x-2\\
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