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gizmo_the_mogwai [7]
3 years ago
14

He currently has 13 gallons of gas in his car. Each hour that he drives, his car uses up 1.25 gallons of gas. How much gas would

be in the tank after driving for 2 hours? How much gas would be left after tt hours?
Mathematics
2 answers:
Dima020 [189]3 years ago
7 0

Answer:

i am not a 100% sure but i got 10.5

Step-by-step explanation:

Free_Kalibri [48]3 years ago
6 0
He has 10.5 gallons
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Find an equation for the perpendicular bisector of the line segment whose endpoints
TEA [102]

Answer:

y= -2x -8

Step-by-step explanation:

I will be writing the equation of the perpendicular bisector in the slope-intercept form which is y=mx +c, where m is the gradient and c is the y-intercept.

A perpendicular bisector is a line that cuts through the other line perpendicularly (at 90°) and into 2 equal parts (and thus passes through the midpoint of the line).

Let's find the gradient of the given line.

\boxed{gradient =  \frac{y1 -y 2}{x1 - x2} }

Gradient of given line

=  \frac{1 - ( - 5)}{3 - ( - 9)}

=  \frac{1 + 5}{3 + 9}

=  \frac{6}{12}

=   \frac{1}{2}

The product of the gradients of 2 perpendicular lines is -1.

(½)(gradient of perpendicular bisector)= -1

Gradient of perpendicular bisector

= -1 ÷(½)

= -1(2)

= -2

Substitute m= -2 into the equation:

y= -2x +c

To find the value of c, we need to substitute a pair of coordinates that the line passes through into the equation. Since the perpendicular bisector passes through the midpoint of the given line, let's find the coordinates of the midpoint.

\boxed{midpoint = ( \frac{x1 + x2}{2} , \frac{y1 + y2}{2})  }

Midpoint of given line

= ( \frac{3  -  9}{2} , \frac{1 - 5}{2} )

= ( \frac{ - 6}{2}  , \frac{ - 4}{2} )

= ( - 3 , - 2)

Substituting (-3, -2) into the equation:

-2= -2(-3) +c

-2= 6 +c

c= -2 -6 <em>(</em><em>-</em><em>6</em><em> </em><em>on both</em><em> </em><em>sides</em><em>)</em>

c= -8

Thus, the equation of the perpendicular bisector is y= -2x -8.

5 0
3 years ago
The Mendes family bought a new house 10 years ago for $109,000. The house is now worth $193,000. Assuming a steady rate of growt
MatroZZZ [7]
The yearly rate of appreciation was $8400
8 0
3 years ago
A shirt regularly priced at $36.00 was on sale for 25% off.
VLD [36.1K]

Answer:

C

Step-by-step explanation:

find out the 35% OF 36.00

36x35%=9

36-9=27

3 0
3 years ago
Can you help me on problem 1 of Three-Dimensional Figures
svlad2 [7]
The answer is D) isosceles and equilateral triangle 
4 0
3 years ago
Find the mean 28,18,19,18,17
olga2289 [7]
To find the mean you add up all the numbers then divide the answer by the amount of numbers there are

in this case we add 28+ 18+ 19+ 18+ 17 then divide by 5

THE MEAN IS 20!!!

-HAVE A NICE DAY!!!
7 0
2 years ago
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