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Studentka2010 [4]
2 years ago
11

First answer gets brainliest. You do not need to do the graphing or the shading, just pls tell me the inequalities

Mathematics
1 answer:
Aleksandr-060686 [28]2 years ago
4 0

Answer:

y\geq 20-x

y\geq 40-5x

Step-by-step explanation:

8 nickels = 40 cents

y < 8

x < 35

Let's test

1 nickel and 35 pennies. That doesn't work

4 nickel and 20 pennies. That works. Perhaps we be more precise?

5 nickels and 15 pennies. Right on the point. 20 coins.

Hope this helps :)

Have a nice day!

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Line g passes through points (5, 9) and (3, 2). Line h passes through points (9, 10) and (2, 12). Are line g and line h parallel
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For this case we find the slopes of each of the lines:

The g line passes through the following points:

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So, the slope is:

m = \frac {y_ {2} -y_ {1}} {x_ {2} -x_ {1}} = \frac {9-2} {5-3} = \frac {7} {2}

Line h passes through the following points:

(x_ {1}, y_ {1}) :( 9,10)\\(x_ {2}, y_ {2}) :( 2,12)

So, the slope is:

m = \frac {y_ {2} -y_ {1}}{x_ {2} -x_ {1}} = \frac {12-10} {2-9} = \frac {2} {- 7} = - \frac {2} {7}

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It is observed that lines g and h are not parallel. We verify if they are perpendicular:

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Answer:

The lines are perpendicular.

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