1/ ( 1/20 + 1/15 + 1/12) = 120/24 minutes = 5 minutes
sin a = 1/4 then cos a = sqrt(15)/4
sin 2α = 2 sin α cos α sin and cos are both positive in Q I (from 0 to pi/2 is Q I )
sin 2a = 2 (1/4) (sqrt(15)/4) <==== take it from here !
Wow! 15 posts in 15 minutes !
DO YOUR OWN HOMEWORK !
37/20 * 100% = 185%
Set h(t) = 6
6 = -4.9t^2 + 18t- .4
0 = -4.9t^2 + 18t - 6.4 now use quadratic formula to solve for t.....
you will get two 't' values ...the time above 6 m will be the time between the two values
805 - (-25) = 805 + 25 = 830 m
d = common ratio of the arithmetic sequence
a = 14
b = 14 + d
c = 14 + 2d summed = 180
14 + 14+d + 14+2d = 180
42 + 3d = 180
d = 46 then c = 14 + 2d = 106o
.89 - .81 = 0. 08 gm left
Given: G = 1.6 N
In ONE hour Grady rides 7.5 miles MORE than Noah
G = N + 7.5 sub in the red equation
1.6 N = N + 7.5
N = 12.5 m/hr
0-99 is 100 numbers
odd odd 25
even odd 25
odd even 25
even even 25 so 75 have at least one odd digit
26 letters x 26 lettes x 75 numbers = 50700 plates
