Answer:
108
Step-by-step explanation:
we first add 7+8=15 then 15×2=30 30+6=36 36×2=108
I do not understand the question being asked
Answer:
1.5seconds
Step-by-step explanation:
When the ball hits the ground, the height is equal to zero. So find t when H=0:
H=16t²+8t+80
0=16t²+8t+80
0=2t²+t+10
0=(2t-3)(t+2)
So (2t-3)=0, or (t+2)=0
So t=1.5 or t=-2. Time can't be negative though, so we take our answer as 1.5seconds
Answer:
Step-by-step explanation:
subtract 2 from both sides
Answer:
The first four terms are 3,9,27,81
Step-by-step explanation:
<u>Step :-1</u>
Given first term of sequence is 
Given 'n' t h term is 
.............(1)
here we put n = 2 in equation (1)
..............2
put in equation (2)
put n=3 in equation (1)
put n= 4 in equation (1)
The first four terms of the sequence is
3 , 9, 27 , 81 ....this is geometric sequence
a =3 and ratio term is r =3
