Using the law of cosines:
The grocery store to the school:
Distance = √(7^2 + 10^2 - 2*7*10*cos(100)
Distance = 13.16 miles
The movie store to the school:
Distance = √(7^2 + 10^2 - 2*7*10*cos(120)
Distance = 14.80 miles
The friend is further away.
Answer:
286 miles / x gallons = 15miles per gallon.
286/15 = x = approximately 19.07 gallons.
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
let y = f(x) and rearrange making x the subject, that is
y = x - 3 ( add 3 to both sides )
y + 3 = x
change y back into terms of x, then
(x) = x + 3 → B
Answer:
ln 3
Step-by-step explanation:
3 ln 3 - ln 9
We can rewrite 9 as 3^2
3 ln 3 - ln 3^2
We know lnx^a = aln x
3 ln 3 - 2 ln 3
ln 3