This is how I'd set it up:
405/20 = 243/x
this means the mpg (miles / gallons) for 1 situation is the same as the mpg for the other situation (because the rate is the same)
then just cross multiply and solve:
405x=243*20 or 405x=4860 or x = 12
he would need 12 gallons of gas for 243 miles
Answer:
rotational symmetry: 2
reflectional symmetry: 0
Step-by-step explanation:
I took the test
70x^4y^2+14xy
14(5x^4y^2+xy)
14xy(5x^3y+1)
Just keep taking out things that both terms have in common, to find the answer.
Answer:
12in is you answer
Step-by-step explanation:
The formula to find circumference is 
so to rearrange to solve for radius that will be 
=
=11.94in