We estimate that 25/75 = 1/3 of the fish in the pond are marked.
So an estimate would be 30 / 1/3 = 30*3
= 90 answer
From 1950 to 2050 is 100 years, so that would make the population doubling twice in that amount of time. So in 2000 the population would go from 2.5 million to 5 million. And in 2050 the forecast for population would be 10 million.
2.5 x 2 = 5
5 x 2 = 10
Answer:
The answer to your question is 8 h
Step-by-step explanation:
Data
length of the ladder = 200 cm
distance between each rung = 20 cm
rate = 10 cm/h
fifth rung = ?
Process
1.- Calculate the total distance the tide must rise
distance = 20 cm x 4
= 80 cm because the first rung touches the water
2.- Calculate the time
rate = distance / time
-Solve for time
time = distance / rate
-Substitution
time = 80 cm / 10cm/h
-result
time = 8 h
Answer: x>- -40
Step-by-step explanation:
Answer: 14. 1 in
Step-by-step explanation:
The formula for calculating the length of an arc is given as :
L = Ф/360 x 2πr
where Ф is the angle subtended by the arc
r = radius
substituting the given values
L = 135/360 x 2 x 3.14 x 6
L = 5086.8/360
L = 14.13
L ≈ 14.1 in to the nearest tenth