Answer:
0.14secs
Step-by-step explanation:
Given the equation that models the height expressed as;
h(t)=-4.9t^2-v_0 t+h_0
Given v0 = 12m/s
h0 = 1.8m
The equation becomes
h(t)=-4.9t^2-12t+1.8
The height of the ball on the ground level is zero
Substituting into the equation
0 = -4.9t^2-12t+1.8
Multiply through by -10
49t²+120t-18 = 0
Factorize and get t:
t = -120±√120²-4(49)(-18)/2(49)
t = -120±√14400+ 3528/98
t = -120±√17928/98
t = -120±133.89/98
t = 13.89/98
t = 0.14secs
Hence it takes 0.14secs until it reaches the ground
Answer: Its (C) there is not enough inf...
Step-by-step explanation: PLEASE mark me as (brainlisit) .... thank uu
From the measure of 40°, you can write
tan(40°) = 100/x, where x is the base from the building to the tower
⇒x=100/tan(40°) = 119,18 m
2) From the measure of 30°, you can write
tan(30°) = y / 119,18, where y is the height from the roof of Jill's building to the top of the tower.
Then, y = tan(30°) * 119,18 = 68,81 m
3) The height of Jill's building is 100 - 68,81 = 31,19 m
Answer:
The answer is 100%.
Step-by-step explanation:
Over booking is a pretty common practice throughout the hospitality sector and most services.
If the stated 5% of the guests not showing up rule applies over the 210 reservations, this means that 10,5 people of those 210 will not show up to claim their rooms in which case all 200 rooms in the hotel will given to the arriving costumers.
So the probability that all guests who arrive will receive a room is 100%.
I hope this answer helps.