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2 years ago

Sam earned $380 working for 8 hours. How much does Sam earn per hour? $ per hour

Mathematics

2 answers:

Crank2 years ago

7 0

Answer:

$47.50

Step-by-step explanation:

You just take $380 and divide it by 8 hours to get the amount of money per hour, which is $47.50 .

Readme [11.4K]2 years ago

4 0

Answer:$47.5 an hour

Step-by-step explanation:

You divide 380 by 8 to find how much money Sam makes hourly

380/8 =47.5

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Find the equation of the line that passes through the points (-5,7) and (2,3)

Olegator [25]

Answer:

$y=-\frac{4}{7}x+4\frac{1}{7}$

Step-by-step explanation:

So, in order to solve this problem, I started off by drawing it out. On my graph that I have attached below, I first started out by locating the points (-5,7) and (2,3). Now, this is an optional step, but I highly encourage practicing your graphing skills by solving this problem on graph paper as well. Next, I connected the two points that I just graphed. This is the line that passes through (-5,7) and (2,3).

Now, here is where the actual solving starts. If you haven't already been taught this yet, I will introduce it to you now. I am going to find the equation of this line by filling in what I know in the equation y=mx+b, where m= the slope of the line, and b= y intercept.

Slope of the line: m= $\frac{y_{1} - y_{2} }{x_{1} - x_{2} } = \frac{7-3}{-5-2} = \frac{4}{-7}= -\frac{4}{7}$

If you haven't been taught how to find the slope of a line I recommend you find out.

Substitute the slope into the equation.

$y=-\frac{4}{7} x+b\\$

Now, we will solve for the 'b,' or y intercept.

We already have x and y values to use: (-5,7) or (2,3). I'll use x=2 and y=3 to solve for the y intercept.

$y=-\frac{4}{7} x+b\\\\3=-\frac{4}{7} *2+b\\\\3=-\frac{8}{7} +b\\b=3+\frac{8}{7} \\b=\frac{21}{7}+\frac{8}{7}=\frac{29}{7} =4\frac{1}{7} \\b=4\frac{1}{7}$

Last step: substitute the slope and y intercept into y=mx+b.

$y=mx+b\\y=-\frac{4}{7}x+4\frac{1}{7}$

That is the answer to this problem.

I hope this helps.

3 0

3 years ago

Please help quick it is almost due :(

Vaselesa [24]

Answer:

1 and 2

Step-by-step explanation:

8 0

2 years ago

Cedric made 30 cups of soup. How many 1 1/4 cups servings does he have? A. 24 servings. B. 28 servings. C. 30 servings. D. 35 se

belka [17]

A. 24 servings. you take the faction 1 1/4 and convert it into a decimal (1.25). 1.25×24=30. Therefore making your answer "A".

5 0

3 years ago

Fractions closer to 0 than to 1

VMariaS [17]

Answer:

1/4, 1/8, 1/16

i don't know this is my guess but these are small and close to zero

7 0

3 years ago

Write the equation of a line that is perpendicular to the given line and that passes through the given point. y+2=1/3(x-5);(-4,3

wel

Here, equation of a line, y + 2 = 1/3 (x -5)
slope = 1/3

Slope of the line which is perpendicular would be -3 [ reciprocal & opposite ]

Now, y - y1 = m(x-x1)
y - 3 = -3(x - (-4))
y - 3 = -3x - 12
y = -3x - 9

In short, Your Answer would be y = -3x - 9

Hope this helps!

7 0

2 years ago