Answer:
não entedi
Step-by-step explanation:
I think answer should be c. Please give me brainlest I hope this helps let me know if it’s correct or not okay thanks bye
We conclude that both functions f(x) and g(x) are positive on the interval (4, ∞)
<h3>
In which interval both functions f(x) and g(x) are positive?</h3>
On the image we can see two graphs, the blue one is the graph of f(x) and the red one is the graph of g(x).
A function is positive when its graph is above the horizontal line.
For the case of f(x), it is positive on the intervals:
(-∞, -2) and (1, ∞)
And for function g(x), we can see that it is positive on the interval:
(4, ∞)
Now, the interval where both functions are positive is in the intersection between the intervals (in this case is the smaller of the intervals, so it is the correspondent to g(x)), which is (4, ∞)
We conclude that both functions f(x) and g(x) are positive on the interval (4, ∞).
If you want to learn more about intervals:
brainly.com/question/1503051
#SPJ1
Answer:
There is enough not evident to support dealer's claim that his sales is no more than $80.
Step-by-step explanation:
We are given the following in the question:
Population mean, μ = $80
Sample mean, = $91
Sample size, n = 20
Alpha, α = 0.05
Sample standard deviation, s = $21
First, we design the null and the alternate hypothesis
We use one-tailed t test to perform this hypothesis.
Formula:
Putting all the values, we have
Now,
Since,
The calculated test statistic is greater than the critical value, we fail to accept the null hypothesis and reject it. We accept the alternate hypothesis.
Conclusion:
There is enough not evident to support dealer's claim that his sales is no more than $80.
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Answer:
6.01 m
Step-by-step explanation:
Apparently, the washing line is the hypotenuse of a right triangle with sides (2.1-1.7) = 0.4 m and 6 m. The Pythagorean theorem can be used to find its length.
ab = √(0.4² +6²) = √36.16 ≈ 6.0133
The distance ab is about 6.01 m.