Answer:
Step-by-step explanation:
4(a)
2,1 2,2 2,3 2,4 2,5 2,6
on the first role u have 16.6667%
second would be 33.3333%
Step-by-step explanation:
For the 1st picture,
The 2nd option is the answer.
Let say we have

Replace it into the recursive formula.

We are given a,1 and a,2 so the 3rd terms has to be

So the second option is the answer.
For the second picture, a geometric sequence is a group of terms that has the same ratio between each consecutively.
Infinite means going on forever
The fourth option is the answer.
Answer:
I agree with both of them because they are both correct
Step-by-step explanation:
See attachment for complete question;
Slope (m) is calculated using the following formula:

Where


From the attachment, we have the following:
Triangle A


So:


<em>In this case, Mai is correct:</em>
Triangle B


So:



<em>In this case, Elena is also correct:</em>
As the ball hits the ground, its height will be equal to 0, so...
-3t² + 12t + 63 = 0
t² - 4t - 21 = 0
Using the Viet's theorem to solve the quadratic equation quicker:
t₁ + t₂ = 4
t₁t₂ = -21
t₁ = -3 - this is not possible because time can't be negative
t₂ = 7
That means, the ball is expected to hit the ground after 7 sec has passed.