Answer:
5^10 / 5^8 = 5^2 = 25 so the equation becomes 25 = (1/5) ^ n. This means that n = -2.
Answer:
False, 6:4 and 18:8 are equal ratios.
Step-by-step explanation:
Given data:
6:4 ≠ 18:8
Explanation.
1. 6:4 = 6/4 = 3/2
2. 18:8= 18/8 = 9/4 = 3/2
Hence proved:
6:4 = 18:8
to get the equation for any straight line, all we need is two points from it, so hmmm say from this table let's use (2,0) and (6,-8)


Answer:
- a) f(x) = - 20x + 450
- b) 30 pages left to read
Step-by-step explanation:
<u>Given sequence:</u>
The first term is 430 and the common difference is - 20.
a)
<u>Required function is:</u>
- f(x) = 430 - 20Ix - 1) = 430 - 20x + 20 = 450 - 20x
or
b)
<u>Find the number of pages left after 21 days:</u>
- f(21) = 450 - 20*21 = 450 - 420 = 30