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Harman [31]
3 years ago
15

A used-car costs $5,000. You figure you can get 4 years out of it. You drive 10,000 miles per year. Your car insurance costs $1,

200 per year. You figure you'll spend $400 per year on maintenance. Gas costs $3 per gallon, and the car gets 25 miles per gallon. What will your average cost (all costs included) per mile be over the 4 years?
Mathematics
2 answers:
WITCHER [35]3 years ago
6 0

Answer:

$0.405

I just took the test.

JulsSmile [24]3 years ago
3 0

Answer:

26,800

Step-by-step explanation:

Im not sure but thats what I got

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fgiga [73]
The answer should be 1
6 0
3 years ago
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a. Find symmetric equations for the line that passes through the point (4, −4, 8) and is parallel to the vector −1, 4, −3b. Find
daser333 [38]

The line has equation

\vec r(t)=(4,-4,8)+(-1,4,-3)t

where t is any real number. (-1,4,-3)t is the line containing all scalar multiples of the vector (-1, 4, -3); we add (4, -4, 8) to shift the line so that it passes through this point while remaining parallel to the the line.

To get the symmetric form, we have

\begin{cases}x(t)=4-t\\y(t)=-4+4t\\z(t)=8-3t\end{cases}

Solving for t in each equation gives the symmetric form,

t=\boxed{4-x=\dfrac{y+4}4=\dfrac{8-z}3}

The line has intercepts in the coordinate planes wherever either the x, y, or z coordinate is 0.

xy-plane:

z=0\implies\begin{cases}4-x=\frac83\\\frac{y+4}4=\frac83\end{cases}\implies\left(\dfrac43,\dfrac{20}3,0\right)

yz-plane:

x=0\implies\begin{cases}\frac{y+4}4=4\\\frac{8-z}3=4\end{cases}\implies\left(0,12,-4\right)

xz-plane:

y=0\implies\begin{cases}4-x=1\\\frac{8-z}3=1\end{cases}\implies\left(3,0,5\right)

7 0
3 years ago
A construction crew needs to build a road that will be 20 miles long. The crew already completed a stretch that is 6.44 miles lo
Alex787 [66]
The answer is A. 8.62 is about 9 and 6.44 is about 6 
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3 years ago
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EleoNora [17]

Answer:

13 pieces

Step-by-step explanation:

First we convert 4m into cm :

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Now we need to figure out how many 30s go into 400 :

400 ÷ 30 = 13 remainder 10

So 13 pieces can be cut from the ribbon

Hope this helped and have a good day  

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2 years ago
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What is the value of x for this question?
cestrela7 [59]

Answer:

Step-by-step explanation:

3x + 3

6 + 2x

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3 + 6 = 9

5x + 9

4 0
2 years ago
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