Answer:
60/220
Step-by-step explanation:
we use combination,
then, all divided by,
Gabriel is saving money by mowing lawns on the weekends. Last month, he saved $150. This month, saved 20% more than he saved las
2 answers:
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Answer:
We can conclude that the battery life is greater than the 32 hour claim.
Step-by-step explanation:
The null hypothesis is:
The alternate hypotesis is:
Our test statistic is:
In which X is the statistic, is the mean,
is the standard deviation and n is the size of the sample.
In this problem, we have that:
So
We need to find the probability of finding a mean time greater than 37.8. If it is 5% of smaller(alpha = 0.05.), we can conclude that the battery life is greater than the 32 hour claim.
Probability of finding a mean time greater than 37.8
1 subtracted by the pvalue of z = t = 2.46.
z = 2.46 has a pvalue of 0.9931
1 - 0.9931 = 0.0069 < 0.05
So we can conclude that the battery life is greater than the 32 hour claim.
<h2>Answer:</h2>
The function whose inverse is also a function is:
We know that inverse of a function is also a function if it is one-to-one function.
i.e. the graph of the function satisfies the horizontal line test.
i.e. there is a unique image corresponding to each element.
1)
The function G(x) is a straight increasing line( since the slope is positive)
Hence, the function is 1-1 as it is a strictly increasing function.
Hence, the inverse of G(x) is again a function.
2)
We know that a quadratic function is never 1-1.
( Since, it repeats it's value for every negative and positive value of a number )
Hence, the inverse of K(x) is not a function.
3)
Again we know that the modulus function is not a 1-1 function.
Hence, it's inverse is also not a function.
4)
As we know that a constant function is not 1-1.
Since it takes same value for each x.
Hence, the inverse of w(x) is not a function.