Answer:
f(x) is neither odd nor even function
Step-by-step explanation:
we are given
Firstly, we will find f(-x)
we can replace x as -x
we get
now, we can simplify it
we can see that
it is neither equal to f(x) nor -f(x)
we know that
For even:
For odd:
so, f(x) is neither odd nor even function
So this is complicated, but to get a general idea simple we use common sense and say its bigger than 4, since its length is bigger than the supposed 4 length. So then we get the options 6, 5, and 24. Now we can do some basic math and figure that the circle radius is around 4 so its probably 6 or 5. Slim change of 24.
People who did the physical math can check it with my answer.
Answer: option A
Step-by-step explanation: We can construct a (1 - α) % confidence interval for mean by using the formulae below.
u = x + critical value × (standard deviation /√n)
Where x = sample mean and n is the sample size.
The critical value that we are going to use (either z or t critical values) depends on the sample size.
If n > 29 we make use of a z test and if n < 29 we make use of a t test.
Also when using a z test we will (sometimes) make use of the population standard deviation.
And when using a t test, we make use of the sample standard deviation.
"Based on last year's book sales, we estimate that the standard deviation of the amount spent will be close to $30"
Judging by the sentence above, we can see that last year books sales is a fraction of several years of book sales, hence the value of standard deviation given is a sample standard deviation.
Since we are making use of a sample standard deviation, we will be using a t test for our critical value and hence sample size must be less than 29.
These points validates option A
Answer:
Step-by-step explanation:
Sin(42) = n/21
n = 21 * sin(42)
n = 21 * 0.6691
n = 14.052
Cos(42) = m / 21
21 * cos(42) = m
m = 21 * 0.7431
m = 15,61
Theta + 42 = 90
Theta = 90 - 42
Theta = 48
