we know that
1 gal = 3.7854 liters
<u>
Convert 38 l of gasoline to gallon
</u>
by proportion
<u>Find the cost</u>
we know that
The gas costs $2.09 per gallon
so
Multiply $2.09 by the total of gallons
$2.09*10.04=$20.98
therefore
<u>the answer is</u>
$20.98
Length of one edge is 10cm
And the surface area is 600cm2
Easy 4000 times 0.6 times 5 = 1200
You simply put 40 over a hundred and 55 over n (which is the number were trying to find) so you do cross multiplication. 55 times a hundred and after you get the answer. You divide it by 40 and should get 137.5.
For (-0.75+6)-(2.5x-9) all you have to do is multiply the negative into the 2nd brackets and collect like terms. Same with 8(5x-3y) all u have to do is multiply in the 8.
for the 4x+20 and 6x+54 all u do is factor out a common number(LCD- lowest common denominator)