The error with this inequality is that they had used a > (greater than) symbol instead of ≤ (less than or equal to) symbol. With this verbal sentence, "is at most 15" implies that while the quotient <em>can</em> be 15, it cannot be greater than that.
The correct inequality is: t ÷ 4.2 ≤ 15.
8.5cm · 250,000 = 2,125,000cm
1m = 100cm therefore 1cm = 0.01m
2,125,000cm = 2,125,000 · 0.01 = 21,250m
1km = 1,000m therefore 1m = 0.001km
21,250m = 21,250 · 0.001km = 21.25km
Answer: 21,250m = 21,25km
It's the Geometric Sequence.
The n<span>-th term of a geometric sequence with initial value </span>a<span> and common ratio </span>r<span> is given by:
</span>

We have:

Substitute:

Answer:
The sixth term is equal -486.
Hi there!
With exponents, there are a few things to keep in mind:
1. Do <u>not </u>multiply the base by the exponent (the base is the number that has an exponent; for example, 3 is the base of 3^2)
2. On the computer, exponents are signaled by this sign ^.
3. The exponent is the number of times you multiply the base by itself
Let's say you're given this exponent : 6^3
Because the exponent is 3, we need to multiply 6 by 6 a total of 3 times. It's tricky, but here's how you do it:
(6 * 6) * 6
36 * 6 = 216
So, 6^3 is 216
Here's another example:
9^5
(9*9) * 9* 9* 9
[81 * 9]*9 *9
[729 * 9] * 9
6561 * 9
59049