Answer:
he multiplied by 0.8 not .08
Step-by-step explanation:
when doing 8% you go back 2 places so 0.08
34×0.08= 2.72
34+2.72= 36.72
Answer:


Step-by-step explanation:
Given

Solving (a): Equation when it hits the ground.
This means that 
So, we have:


Solving (b): The value of t in (a)

Using quadratic formula, we have:

This gives:




Split



Time can't be negative; So:

Answer:
7
Step-by-step add upexplanation
Add average of each bag. 21
Then divide by 3. 21÷3=7
Answer:
There are 4845 ways to select four patrols
Step-by-step explanation:
Total number of students in 5 th grade = 20
No. of students selected for patrols = 4
We are supposed to find In how many ways can the four patrols be selected
We will use combination
Formula : 
Substitute n = 20 and r = 4
So,the four patrols can be selected in no. of ways = 
Hence There are 4845 ways to select four patrols