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cupoosta [38]
3 years ago
8

On. If your car gets 30 miles per gallon, find the co

Mathematics
2 answers:
Leno4ka [110]3 years ago
5 0

Answer:

If use a gallon every 30 miles, 30 gallons are good for 900 miles

900÷30=30

If the cost is $1.15 per gallon

$1.15×30=$ 34.50

Step-by-st1ep explanation:

adelina 88 [10]3 years ago
4 0

C. $34.50. A car gets 30 miles per gallon, if the gasoline cost $1.15 per gallon, a 900 miles trip will cost $34.50

This exercise can be solved by simply arithmetic.

Divide the total miles by the miles per gallon:

900/30 = 30

Then, multiply this value by the cost per gallon:

30 x $1.15 = $34.50

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Answer:

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Step-by-step explanation:

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3 years ago
Find the constant of variation k for the direct variation. x f ( x ) 0 0 2 –1 4 –2 7 –3.5 k = 0.5 k = –2 k = –0.5 k = 0
Furkat [3]

Answer:

Option C is correct.

Constant of variation k = -0.5

Step-by-step explanation:

The direct variation says that:

y \propto x

then, the equation is of the form: y =kx .....[1] where k is the constant of variation.

Given the table:

x       f(x)=y

0        0

2        -1

4         -2

7         -3.5

Consider any values from the tables

x = 4 and y=f(x) = -2

Substitute these values in equation [1] we have;

-2 = 4k

Divide both sides by 4 we get;

k = -\frac{2}{4} = -0.5

Therefore, the constant of variation is, -0.5                

7 0
3 years ago
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Anettt [7]
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