Answer:
A)
Step-by-step explanation:
the top one
Hi there....
-6m - 8 = 24
-6m = 24 + 8
-6m = 32
m = 32/-6
m = -16/3
or if they ask you for decimal, it will be m= -5.33
The question here is how long does it take for a falling
person to reach the 90% of this terminal velocity. The computation is:
The terminal velocity vt fulfills v'=0. Therefore vt=g/c,
and so c=g/vt = 10/(100*1000/3600) = 36,000/100,000... /s. Incorporating the
differential equation shows that the time needed to reach velocity v is
t= ln [g / (g-c*v)] / c.
With v=.9 vt =.9 g/c,
t = ln [10] /c = 6.4 sec.
So travel distance of a wheele
1 rotation distance=1 times circumverence so find circunference
circumfernec=2 times radius times pi
radius=30
30 times 2 time spi=60pi
so 60pi times x revolutions=540pi
divide both sides by 60pi
x revolutions=9
9 revolustion
B is the answer
Answer:
age of the Father is 46 and age of the son is 24
Step-by-step explanation:
13 years ago x was thrice y's age, or
(x - 13) = 3(y - 13); or
x - 3y = -26
2 years ago, x was twice y's age, or
(x - 2) = 2 (y - 2); or
x - 2y = -2
Subtracting equation 1 from 2:
x - 2y - (x - 3y) = -2 - (-26)
or y = 24