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ra1l [238]
3 years ago
11

Pepper Jackie filled up her 10 gallon gas tank for $54.50. How much did the gas cost per gallon

Mathematics
2 answers:
Marizza181 [45]3 years ago
5 0

Answer:

it was 5.45$ per gallon

Step-by-step explanation:

hope i helped

Elenna [48]3 years ago
3 0
She would have payed $5.40 per gallon. You just divide the total cost by the gallon amount.
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Find a vector equation and parametric equations for the line through the point (7,4, 5) and parallel to the vector 3i 2j-k .
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Answer: vector equation r = (7+3t)i + (4+2t)j + (5 - 5t)k

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Step-by-step explanation: The vector equation is a line of the form:

r = r_{0} + t.v

where

r_{0} is the position vector;

v is the vector;

For point (7,4,5):

r_{0} = 7i + 4j + 5k

Then, the equation is:

r = 7i + 4j + 5k + t(3i + 2j - k)

<u><em>r = (7 + 3t)</em></u><u><em>i</em></u><u><em> + (4 + 2t)</em></u><u><em>j </em></u><u><em>+ (5 - 5t)</em></u><u><em>k</em></u>

The parametric equations of the line are of the form:

x = x_{0} + at

y = y_{0} + bt

z = z_{0} + ct

So, the parametric equations are:

<em><u>x = 7 + 3t</u></em>

<em><u>y = 4 + 2t</u></em>

<em><u>z = 5 - 5t</u></em>

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Step-by-step explanation:

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