F(x) = x4(x2 - 1)
f(-x) = (-x)4((-x)2 - 1)
f(-x) = x4(x2 - 1)
from above explanation it is clear that the function is even.
Answer:
(A)The sample comes from a population of tires with 60,000 miles where 5% of tires are worn out.
Step-by-step explanation:
The tire manufacturer has a 60,000 mile warranty for tread life. To verify the authenticity of its claim, it picks a sample of 250 tires (out of the population of tires) that have been used for 60,000 miles.
Given the hypothesis:
: The proportion of tires that are worn out after 60,000 miles is equal to 0.05.
: The proportion of tires that are worn out after 60,000 miles is less than 0.05.
It is assumed that 5% of the tires in the sample are worn out and the hypothesis is formulated to prove or disprove this assumption.
You need the odd integers to be separated by 2. One will not work.
If n is odd, n + 1 will be even. You cannot get an exception to that. Try it.
1 is odd but 1 + 1 is even.
n and n + 3 produces 1 odd and 1 even. If n is odd then since 3 is odd when the two are added together, you get an even. Again try it
n = 5
n + 3 = 8
C: is not the answer.
D can't work either. If n is odd then n + 2 will be odd but n + 1 is even.
The Answer is B.
n(n + 2) = 195
n^2 + 2n - 195 = 0
(n - 13)(n + 15)
n can be 13 and n + 2 can be 15
13 * 15 = 195
But here's something you may not know
n can be - 15 and then the other odd number would be - 13
