What is the product of any integer and -1
2 answers:
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Answer: 0.31
Step-by-step explanation:
Let A denotes the event that the students report drinking alcohol and B denotes the students report using some type of tobacco product .
Given : P(A) =0.84 ; P(B)=0.33 and P(A∪B)=0.86
We know that
Then, the probability that the student both drunk alcohol and used tobacco in the past month is given by :-
Hence, the probability that the student both drunk alcohol and used tobacco in the past month = 0.31
If cos90 is equivalent to zero, hence the cos inverse of 0 is 90 degrees which is equivalent to pi/2 in radians
<h3>Inverse of trigonometry function</h3>Inverse of a function are the opposite of the function. Given the inverse of cosine function as shown:
If x = 0, hence;
If cos90 is equivalent to zero, hence the cos inverse of 0 is 90 degrees which is equivalent to pi/2 in radians
Learn more on trigonometry here: brainly.com/question/24236629
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Answer:
Step-by-step explanation:
You have the square root of an expression in the denominator.
A square root cannot have a negative number inside, but it can have zero or positive.
Since this square root is in the denominator, it also cannot have a zero inside; it can only have positive values inside. You must set the expression inside the square root greater than zero, and solve for x.