Answer:
- (t-20)
Step-by-step explanation:
Check the picture please if you're good at math!!
1 answer:
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Answer:
The equation is a function, for each value of x, corresponds a y-value. The domain and the range is for all the real numbers.
Step-by-step explanation:
To sketch the graph you need to make a table, propose different values of x, including negative and positives. You can see that for any value of x, you will have any value of y.
For example:
x y
-20 -59
-15 -44
-10 -29
-5 -14
0 1
5 16
10 31
15 46
20 61
Remember the following concepts:
The domain of a function f (x) is the set of all the values for which the function is defined. In other words is the collection of all possible inputs that can be plugged into a function to produce a y-value. To find the domain depends of the function type. For example a polynomial function without radicals or variables in the denominator will have all the real numbers in its domain. Usually we have to avoid 0 on the bottom of a fraction, or negative values under the square root sign.
The range of the function is the set of all the values that y takes, it is the collection of all possible outputs, depending of the function can have a minimum y-value or a maximum y-value.
We can see that the function y = 3x +1, or f(x) = 3x +1, has no restrictions, therefore the domain is all real numbers. From the graph we can see easily that y can be positive or negative. So the domain and the range can be expressed as (-∞, ∞) .
You can see the graph in the attached file.
Answer:
The most appropriate way to state the conclusion is:
d. There is not enough evidence to say that men have a longer mean nose length than women.
Step-by-step explanation:
We have the result of a hypothesis test.
The claim was that men have a longer mean nose length than women.
That means that the alternative hypothesis states that men's mean nose length is higher than the women's mean nose length.
The P-value of the test is 0.225, which for any usual significance level is large enough to fail to reject the null hypothesis. Then, there is no enough evidence to support the claim that men have a longer mean nose length than women.
a. Men have a longer mean nose length than women.
FALSE. There is no enough evidence to support the claim.
b. The probability is 0.225 that men and women have the same mean nose length.
FALSE. That is not the meaning of the P-value.
c. The mean nose lengths of the populations of men and women are identical.
FALSE. We can not claim that the null hypothesis is true, even when we havo no enough evidence to reject it.
d. There is not enough evidence to say that men have a longer mean nose length than women.
TRUE. This is the the most appropriate way to state the conclusion.