Answer:
D
Step-by-step explanation:
Think about it as a t chart:
- 3
- -6
- 12
- -24
The numbers before the dot are your n values. If you plug in 1 for n, you get 3. If you plug in 2 for n, you get -6.
Answer:
7
Step-by-step explanation:
Concept to Know: "A number is a perfect square if and only if it has odd number of positive divisors
"
Find all the squared values that lies between 360 and 630
360< 19², 20², 21², 22², 23², 24², 25² < 630
19², 20², 21², 22², 23², 24², and 25² are all the squared values that lies between 360 and 630. There are seven of those squared numbers so the answer is 7.
Answer:
b.
Step-by-step explanation:
The given equation is;
We solve by the x-intercept method. We need to graph the corresponding function using a graphing tool.
The corresponding function is
The solution to is where the graph touches the x-axis.
We can see from the graph that; the x-intercept is;
(-2.426,0)
Therefore the real solution is: