Answer:
Idk
Step-by-step explanation:
Answer:
10/21
Step-by-step explanation:
Answer:
6a+8
Step-by-step explanation:
To find the perimeter of a shape add all the sides up
To do this just add everything together
this means we have
3a-7+a+14+2a+1
Add like terms and get
6a+8
Time taken by people in 8rows of given tree with each time a person calls 2 people and it takes 1 min to call someone is 510 minutes.
As given,
Given tree: Person at the top calls 2 people. each person calls 2 more people
Time taken by each person to call someone=1minute
Row wise
First1 +1=2
Second2+2=4
Third4+4=8
Fourth8+8=16
Fifth16+16=32
Sixth32+32=64
Seventh64+64=128
Eighth128+128=256
Total time
2 +4+8+16+32+64 +128 +256=510 minutes
Therefore, time taken by people in 8rows of given tree with each time a person calls 2 people and it takes 1 min to call someone is 510 minutes.
Learn more about time here
brainly.com/question/28050940
#SPJ1
