Answer:
the rocket will reach its maximum height after 4 seconds.
Step-by-step explanation:
The first term ( -4.9(t-4)^2 ) can never be positive, so the maximum height of 80 meters is achieved when t = 4.
3/8 of 16 = (16 / 8) x 3
= 2 x 3
= 6
2/3 of 6 = (6 / 3) x 2
= 2 x 2
= 4
A1. 12 i.e option D
A2. 3n-7 i.e option A
A3. -6n+20 i.e option D
A4. -70 i.e option C
Step-by-step explanation:
aₙ = a₁ + (n - 1) × d
aₙ = the nᵗʰ term in the sequence
a₁ = the first term in the sequence
d = the common difference between terms
Using the above formula to solve the first part, we have :
For the second part, we have :
For the third part, we have :
For the fourth part, we have :
Step-by-step explanation:
without seeing a picture I'm guessing 45 45, and 90
