95 by 60
perimeter = 310
area = 5,700
A rectangular park that is 100 by 55 has a perimeter of 310 and an area of 5,500.
There are an infinite number of parks that can be a solution to this question.
Answer:
We will calculate how much 18%of 500 on the following way
Step-by-step explanation:
18/100 times 100 =90
Answer: The variance of the data is 0.25, therefore second option is correct.
Explanation:
From the given graph it is noticed that the graph is symmetric along x = 4 or it is a bell shaped graph. So, the data follows the normal distribution.
The graph of normal distribution is bell shaped graph symmetric along the mean. The graph of normal distribution is shown below.
Since the given graph is symmetric along x = 4 therefore the mean of the data is 4.
Let the variance be . So, the given data follows normal distribution with mean 4 and variance .
In the below graph the point immediate left to the mean is and in the given graph it 3.5
Therefore, the variance of the data is 0.25, therefore second option is correct.
Answer:
Step-by-step explanation:
sec(-x) − sin(-x) tan(-x)
So the first step is often to write everything in terms of sine, cosine, or tangent. So let's rewrite using sec x = 1 / cos x:
1/cos(-x) − sin(-x) tan(-x)
Now we need to deal with those -x angles. For that, we use reflection identities:
sin(-x) = -sin x
cos(-x) = cos x
tan(-x) = -tan x
Therefore:
1/cos(x) − sin(x) tan(x)
Now let's rewrite tan(x) as sin(x) / cos(x):
1/cos(x) − sin²(x)/cos(x)
Factoring:
(1 − sin²(x)) / cos(x)
Using Pythagorean identity: sin²(x) + cos²(x) = 1. So 1 − sin²(x) = cos²(x).
cos²(x) / cos(x)
And finally, we divide.
cos(x)
1.
Answer B.
2.
Answer B.
3.
Answers A. and C.