The area of circle-A is four times the area of circle-B .
Step-by-step explanation:
The sine of an angle is the same as the cosine of its complement.
If sin 30° = ½, then cos 60° = ½.
d = 5,000 mi the distance between the missiles
v1 = 2,000 mph the rate of the first missile
v2 = 1,000 mph the rate of the second missile
t = 1 min = 1/60 hr
Since distance = speed*time the distance 1 minute before the impact is:
v1t + v2t = t(v1 + v2) = (1/60)(2,000 + 1,000) = 50 miles.
You can add then subtract 5 by 2 to get 3 then add 2.
Answer:
27.3
Step-by-step explanation:
y=a(1/2)^t/h
Plug in
22=30(1/2)^t/61
Divide both sides by 30
0.7333333333=(1/2)^t/61
Log both
Log(0.7333333333) / Log(1/2)
0.447458977 = t/61
0.447458977 x 61 = t
27.2949976 to the nearest tenth is 27.3 = t
