The ball hits the ground when the height h(t) = 0 , so
-16t^2 + 80t = 0
-16t(t - 5) = 0
t- 5 = 0 or -16t^2 = 0 ( here t = 0 which corresponds to when ball is thrown)
t - 5 = 0 gives:-
t = 5 seconds (answer)
Answer:
B
Step-by-step explanation:bc it did it\
Answer:
B
Step-by-step explanation:
P(AUB)=P(A)+P(B)-P(A∩B)
191/400=7/20+P(B)-49/400
P(B)=191/400+49/400-7/20=240/400-7/20=12/20-7/20=5/20=1/4
The answer is 57.49°
57°29'38" = <span>57° + 29' + 38"
</span>
1° = 60'
x° = 29'
1 : 60 = x : 29
x = 29 * 1 : 60 = 0.48°
<u>29' = 0.48°</u>
1° = 3600''
x° = 38''
1 : 3600 = x : 38
x = 38 * 1 : 3600
x = 0.01°
<span><u>38'' = 0.01°</u>
</span>
57°29'38" = 57° + 29' + 38" = 57° + 0.48° + 0.01° = 57.49°
3/5 + 3/20
=12/20 + 3/20
=15/20
1 - 15/20
=20/20 - 15/20
=5/20
=1/4
