Answer:
-0.41 radians
Step-by-step explanation
(Credit goes to calculista)
let
A---> the angle
if sin A=-0.4
then
A=sin-1(-0.4)
using a calculator
A=-23.578°----> the angle A belong to the IV quadrant
convert to radians
if pi radians--]----> 180°
x--------> -23.578°
x=-23.578*pi/180----> x=-0.41 radians
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Answer:
120 drinks and hour
Step-by-step explanation:
15 min is a quarter of an hour so we just got to times the 30 drinks by 4. Simple math really.
Hope this helps:)
50 mph for 3 hours = 150 miles
70mph for 2.5 hours = 140 + 35 = 175
175 miles - 150 miles = 25 miles
= 7√(2x) + 2x
or
= 2x + 7√(2x)
answer is A. 2x + 7√(2x)