Answer:
t₁ = 2,75 sec
Step-by-step explanation:
The ball will get h maximum when dh/dt ( its vertical component of the speed is equal to 0. At this moment the ball has flown half of the total flight time
Then
h(t) = - 4t * ( 4*t - 11 )
h(t) = - 16*t² + 44*t
Taking derivatives on both sides of the equation we get:
dh/dt = - 32*t + 44
dh/dt = 0 ⇒ -32*t + 44 = 0
t = 44/32 ⇒ t = 1,375 s
So twice this time
2*t = 2 * 1.375
Total time t₁ = 2,75 sec
Answer:
248000 miles
Step-by-step explanation:
if it takes 1
seconds then multiply 186,000 by 1
because 186,000 is equal to 1
If nine out of ten students prefer math class over lunch then that's 90%. Which means 10% of the 200 don't prefer it. 200/10= 20 people do not prefer math
Answer:
C. 7,8,9,10,11,12,13
Step-by-step explanation:
I finish it from Schoology.
1 sandwich : 4.35
1 chips : 0.15
Total spending :
39 sandwiches + 42 chips = (39*4.35)+(42*0.15) = 175.95