Answer:
10 times
Step-by-step explanation:
Note : It is given that,
Planet Ruba has a population of 1 million aliens and Planet Zamba has 1 hundred thousand aliens.
We know that,
1 million = 1,000,000
1 hundred thousand = 100,000
If we divide 1,000,000 by 100,000, we can compare the populations of two planets. So, we get :
It means that the population of Ruba planet is 10 times that of the Zamba planet.
Answer:
A)
Step-by-step explanation:
Use the two-points formula for the slope of a line.
We know that the points (2,-2) and (9,3) are on the line. If (a,b),(c,d) are points on a line then the slope m is defined by the equation . In this case, a=2,b=-2,c=9 and d=3 then the slope is
.
You can see how the difference between two consecutive terms is constantly increasing:
So, for the next terms we'll have to add +9, +11, +13 and so on.
Also, note that is obtained by adding the 2nd odd number to
,
is obtained by adding the 3rd odd number to
, and so on.
So, the recursive formula is
For the explicit formula, recall that the sum of the first n odd numbers is n squared. Taking into account the fact that we're not starting from 1, we have