Answer:
40
Step-by-step explanation:
5 people in the room have 5*40 = 200 years altogether
a new person is X years old.
Now 6 people have (200 + x) years altogether.
Mean age of 6 people is (200+x)/6. and it is also = 40.
So,
(200+x)/6 = 40
200 + x = 240
x = 40
I need to see more in order for me to answer this question for you...
Answer:
D 30 but im not sure i would go with D tho
Step-by-step explanation:
it might also be a but im not sure sorry
It is the center point of graph possitive and negative.
Answer:
Step-by-step explanation:
1.
Base area = πr² = 6²π = 36π in²
Circumference = 2πr = 12π in
Lateral area = 2πrh = 144π in²
Total surface area = 2×36π + 144π
= 216π in²
2.
Base area = πr² = π3.25² = 10.5625π in²
Circumference = 2πr = 6.5π in
Lateral area = 2πrh = 6.5π×6.2 = 40.3π in²
Total surface area = 2×10.5625π + 40.3π = 61.425π in²
