What are the first five sequences to the equation f(1)=2/3,f(n)=f(n-1)x3/2
1 answer:
You might be interested in
Answer:
13 months
Step-by-step explanation:
First, find out how much money he needs by subtracting what he currently has from his goal.
Then divide how much he needs by how much he saves every month.
It will take Jon 13 months to save enough for his car.
Answer:
343 : 729
Step-by-step explanation:
A cube is made up of 6 square faces. If each face has a side length of a, we can find the surface area of that cube with the formula , since we'll have 6 faces with area a². Let's call the edge length of the first cube a and the edge length of the second cube b. The ratio between their surface areas is then 6a² : 6b², or simply a² : b². If we compare this to our given ratio 49 : 81, we can see that a² = 49 and b² = 81, or, square rooting both equations, a = 7 and b = 9.
The volume of a cube with a side length a is a³, so the ratio between our cubes here must be a³ : b³. Using the values for a and b we just found, this ratio becomes 7³ : 9³, which we can simplify to 343 : 729.