11C7=11!/7!(11-7)!
^^^^^^^^^^
Not good, at all man, you should really invest in a tutor.
Answer:
21 Feet Long
Step-by-step explanation:
You just reverse how you find a percentage.
1) 40 / 100 = .40
2) .40 * 15 = 6
3) 6 + 15 = 21
I did it this way because I need to find what 40% is to 15. But the trailer isn't 40% of the truck, it's 40% longer than the truck. So, we must add those 2 numbers together getting 21 Ft.
Easeier than last
y=2x+6
sub 2x+6 for y
3x-(2x+6)=6
3x-2x-6=6
x-6=6
add 6
x=12
sub
y=2x+6
y=2(12)+6
y=24+6
y=30
x=12
y=30
(x,y)
(12,30)
soltion is (12,30)
Answer:
Step-by-step explanation:
11.25=11.25 hrs
12.09=12.09 hrs
time=12.09-11.25=44 minutes