Our car has a 15-gallon gas tank. A lower grade of gasoline costs $2.96 per gallon. The premium grade gasoline costs
1 answer:
Answer:
The correct option is b.) $2.28
Step-by-step explanation:
i) the gas tank is of 15 gallons
ii) there are three gallons left in the gas tank
iii) therefore the tank has to be filled with 15 - 3 = 12 gallons
iv) lower grade of gasoline costs $2.96 per gallon
v) the upper grade of gasoline costs $3.15 per gallon
vi) the cost of filling the tank with the lower grade gasoline
= 12 2.96 = $35.52.
vii) the cost of filling the tank with the lower grade gasoline
= 12 3.15 = $37.80
viii) therefore the difference in the cost of filling your tank between the two grades
= $37.80 - $35.52 = $2.28
Therefore the correct option is b.) $2.28
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Answer:
Step-by-step explanation:
2 surfaces that are 5x7
2 surfaces that are 4x7
and the top and bottom that are 4x5
2*5*7 = 70
2*4*7 = 56
2*4*5 = 40
total surface is 166
Given:
The equation of a line is
Line v passes through point (6,6) and it is perpendicular to the given line.
Line w passes through point (-6,10) and it is parallel to the line v.
To find:
The equation in slope intercept form of line w.
Solution:
Slope intercept form of a line is
...(i)
where, m is slope and b is y-intercept.
We have,
...(ii)
On comparing (i) and (ii), we get
So, slope of given line is .
Product of slopes of two perpendicular lines is -1.
Line w is perpendicular to the given line. So, the slope of line w is .
Slopes of parallel line are equal.
Line v is parallel to line w. So, slope of line v is also .
Slope of line v is and it passes thorugh (-6,10). So, the equation of line v is
where, m is slope.
Adding 10 on both sides, we get
Therefore the equation of line v is .