Last week, chen bought 812 gallons of gas at $2.30 per gallon. this week, he bought 4310 gallons of gas at $2.70 per gallon. what was his total cost? enter your answer in the box.

$31.16

Step-by-step explanation:

Last week, Chen bought 8 1/2 gallons at the rate of $2.30 per gallon.

This week, he bought 4 3/10 gallons at the rate of $2.70 per gallon.

The total cost = 8 1/2*2.3 + 4 3/10*2.7

Convert the mixed fraction to improper fraction.

= 17/2 *2.3 + 43/10 *2.7

= $19.55 + $11.61

= $31.16

The total cost was $31.16

Thank you.

$13504.6

Step-by-step explanation:

See last week Chen bought ​ 812 ​ gallons of gas at $2.30 per gallon.

So, total cost = 812*2.30

= $1867.6

This week Chen bought ​ 4310 ​ gallons of gas at $2.70 per gallon.

So, total cost = 4310*2.70

= $11637

To find Total Cost for both weeks , we have to sum up the cost of the respective weeks.

So Total Cost = $1867.6 + $11637

= $13504.6

Hope it helps!!!

-3

step-by-step explanation:

a drawing really does here:

so i draw the horizontal line y=2 and the vertical line x=-2 at this intersection i put b (this is where my right angle is going to be).   so point b is at (-2,2).   point a is 5 units long and is also on y=2 so this point has to be (3,2) or (-7,2) -doesn't matter i will go with (3,2).

now we know c is at (-2,y) we don't know the y yet bet we know that c is on x=-2.

we have the area of the triangle is .5bh=12.5

we know the base length is 5 (ab)

we have the height is (2-y) if you look at your

plug in

.5(5)(2-y)=12.5

solve for y to get the y-coordinate for c

2.5(2-y)=12.5

divide both sides by 2.5 giving:

2-y=5

now subtract 2 on both sides

-y=3

y=-3

answer: ur v dumb

step-by-step explanation: