The predicted values were computed by using the line of best fit, y = 3.2x + 2.
2 answers:
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Answer:
So starting off with 1a f(4)
We simply substitute x with 4 for the function
f(4)=2(4)-5
f(4)=8-5
f(4)=3
Next 1b, here it's a little different since you have to multiply the functions I think ( please correct me if I'm wrong).
gf(4), basically means functions g and f are being multiplied and their variables are being substituted with 4.
g(4)=4^2+3
g(4)=16+3
g(4)=19
and we also know from before that f(4)=3, so we'll do 19 times 3 which is 57
For the next two, I may be wrong, but I'm still going to try:
anything to the power of a negative is a fraction so for f^-1(x)=2x-5 we'll have 1/f(x)=x/2+5/2
And then for g^-1, we'll have 1/g(x)=
Hope I helped :)
Answer:
a) A ∪ B = {2, 4, 5, 6}
b) A ∩ B = {6}
c) = {1, 3, 5}
Step-by-step explanation:
Set notation is used in math to list numbers, objects or outcomes.
It uses <u>curly brackets</u> called "braces". Objects placed within the braces are the elements of the set.
The listing method of <u>set notation</u> simply lists the numbers in the set.
The three dots "..." means it is infinite (goes on forever).
Given:
- A number cube with faces labeled 1 to 6.
Therefore the set of all possible outcomes is {1, 2, 3, 4, 5, 6}.
<u>Event A</u>
The number rolled is <u>greater than 4</u>.
Therefore, the set of outcomes for event A is {5, 6}.
<u>Event B</u>
The number rolled is <u>even</u>.
Therefore, the set of outcomes for event B is {2, 4, 6}.
<u>Part (a)</u>
Event "A or B" means the outcomes in A or B or both.
⇒ A ∪ B = {2, 4, 5, 6}
<u>Part (b)</u>
Event "A and B" means the outcomes in both A and B.
⇒ A ∩ B = {6}
<u>Part (c)</u>
The complement of event B means everything that is not in B.
<em> </em>{1, 3, 5}
Learn more about set notation here: