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____ [38]
3 years ago
12

A man bought a car for $8200 and sold it for 80% of the price two years later. How much did he lose?

Mathematics
1 answer:
Alinara [238K]3 years ago
5 0

Answer:

I don't know for sure, but I'm pretty sure its 1,640.

Step-by-step explanation:

80% of 8,200 is 6560, and then do 8,200- 6,560, you get 1,640.

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17. y=1/2x+5

18. y=-2x+15

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Step-by-step explanation:

Number 17.

(4,7); parallel to y=1/2x-1

You know that lines that are parallel to each other have the same slope, so the slope is 1/2x.

1. Use the point-slope formula to solve for the slope-intercept equation.

y-y1=m(x-x1)

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Number 18.

(4,7); perpendicular to y=1/2x-1

You know that lines that are perpendicular to each other have the opposite reciprocal slope, so the slope is -2.

1. Use the point-slope formula to solve for the slope-intercept equation.

y-y1=m(x-x1)

m= -2

x= 4

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y-7=-2(x-4)

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Number 19.

f(3)=-1

f(4)=1

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y1= -1

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y2=1

(y2-y1)/(x2-x1)

(1-(-1))/(4-3)

2/1

m=2

Use the point-slope formula and solve for the slope-intercept equation.

y-y1=m(x-x1)

y-1=2(x-4)

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2 years ago
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Step-by-step explanation:

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