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abruzzese [7]
3 years ago
5

a student's cost for last semester in her community college was $2,300. she spent $253 of that on books. what percent of my seme

sters college costs was spent on books?
Mathematics
1 answer:
lana66690 [7]3 years ago
4 0

Answer:

11%

Step-by-step explanation:

To find the percentage of books to total cost, divide 253/2300. You get .11

Move the decimal 2 places to the right and that's the percentage.

11%

hope this was good enough

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Answer:

(a) The amount of ice cream increase as temperature increases

(b)

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m = 2 --- slope

Step-by-step explanation:

Given

See attachment for graph

Solving (a): The relationship between the variables

From the attached graph, the dots on the graph increases towards up-right direction. This implies that there is a positive correlation between the variables.

In other words;

The amount of ice cream increase as temperature increases

Solving (b): The line of best fit

First, we draw a line through the points (the line should have almost equal points on both sides; see attachment 2).

From (2), we select any 2 points on the line:

(x_1,y_1) = (15,35)

(x_2,y_2) = (0,5)

The slope (m) is:

m = \frac{y_2 -y_1}{x_2 - x_1}

m = \frac{5-35}{0-15}

m = \frac{-30}{-15}

m = 2

So, the line of best fit is:

y = m(x - x_1) + y_1

Substitute known values:

y = 2(x - 0) + 5

y = 2(x) + 5

y = 2x + 5

The y-intercept is when x=0

So, we have:

y = 2*0 + 5

y = 0 + 5

y = 5

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Step-by-step explanation:

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Step-by-step explanation:

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