Answer:
your answer could be right but I'm not sure....
Step-by-step explanation:
Reflection is the mirror line drawn on the notes here. the one picked seems to have a relfection.
This is exponential growth of the form
f=ir^t, f=final amount, i=initial amount, r=rate, t=time, in this case we know a=20 and r=2 so
f=20(2^t)
Answer:
n = 8.
Step-by-step explanation:
The 2 lines are the same length so
4n + 12 = 2n + 28
4n - 2n = 18 - 12
2n = 16
n = 8.
Meet in 2 hours
means that the distance covered over 2 hours adds to total distance which is 13miles
basically, imagine instead of moving in oposite directions, toward each other, imagine that one moves for 2 hours then theh other one moves for another 2 hours, total 13 miles
so
speed1=x
speed2=y
x is 2.1 more than y
x=2.1+y
distance=speed times time
time=2hours
speed=x and y
total distance=13
13=2x+2y
x=2.1+y
sub
13=2(2.1+y)+2y
13=4.2+2y+2y
13=4.2+4y
minus 4.2 from both sides
8.8=4y
divide both sides by 4
2.2=y
sub
x=2.1+y
x=2.1+2.2
x=4.3
the hikers hiked 2.2mph and 4.3mph
(4/3) (3.14)(1)
(1.33)(3.14)
4.188
=4.2
