The correct answer is
0.4
If two numbers are a and b
a+b=56
a-b=16
2a=76
a=38
b=22
the product is a*b=38*22=836
Answer: The first option.
Step-by-step explanation:
1. You need to remember that:
- An even function is a function with the following property:
f(-x)=f(x)
- An odd function is a function with the following property:
f(-x)=-f(x)
2. By definition, the contangent is an odd function, therefore you have that:
cot(-θ)=-cot(θ)
Then:
3. So, you can coclude that the first step is wrong. Therefore, the answer is the first option.
Using the expected value of a discrete distribution, it is found that:
a) His expected value is of -$2.5.
b) The fair price of a ticket is of $0.5.
<h3>What is the mean of a discrete distribution?</h3>
The expected value of a discrete distribution is given by the <u>sum of each outcome multiplied by it's respective probability</u>.
In this problem, the distribution for the net value of the ticket is:
Item a:
The expected value is given by:
His expected value is of -$2.5.
Item b:
With an unknown ticket price, the distribution is:
The game is fair if E(X) = 0, hence:
0.5 - x = 0
x = 0.
The fair price of a ticket is of $0.5.
More can be learned about the expected value of a discrete distribution at brainly.com/question/24855677
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12. Okay. 16 1/5 is 16.2 in decimal form. Let’s subtract both numbers. 19.8 - 16.2 = 3.6. Paloma is 3.6 seconds faster than Savannah in the 100m dash.
13. Two lengths that are within the given span of 0.08 and 0.4 are 0.22 and 0.17. 0.22 as a fraction in simplest form is 11/50 and 0.17 as a fraction in simplest form is 17/100.