Let's assume
height of plane in feet =h
time in minutes =t
we are given
A plane is descending into the airport. After 5 minutes it is at a height of 6500 feet
so, we get one point as (5,6500)
After 7 minutes it is at a height of 5900 feet
so, we get another point as (7,5900)
we can use point slope form of line
points as
(5,6500)
x1=5, y1=6500
(7,5900)
x2=7 , y2=5900
Calculation of slope(m):
now, we can plug values
Equation of line:
we can use formula
we can plug values
Time of landing:
we can set h=0
and then we can solve for t
..............Answer
Answer:
2×10¹² cells → 90 g
mass of 1 red blood cell : 90÷(2×10¹²) = 45×10^-12 g = 4.5×10^-11 g
A: x = 2/3
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f(1)=10
f(n)=nf(n-1)+5
f(2)=2f(1)+5=2*10+5=25
f(3)=3f(2)+5=3*25+5=75+5=80
f(4)=4f(3)+5=4*80+5=320+5=325
f(5)=5f(4)+5=5*325+5=1625+5=1630