If cosΦ is lesser than zero (negative) it must be in quadrant 2 or 3 because cos is always positive in quadrants 1,4.
D=t*m
d=dollar amount
t=hours
m=how much she earns per hour
Plug in the first set of numbers
$206.25=(25hr)*m
the amount she earns per hour is
$206.25/25hr = m = $8.25 per hr
So
$264=t*$8.25
264/8.25 = t
t = 32 hr
Answer:
Step-by-step explanation:
5/4
(15/16)(4/3) The 4/3 is the reciprocal of 3/4
=5/4
The speed is 630mp/s I think. Because you have to multiply Wavelength by Frequency to get true speed
