Answer:
Step-by-step explanation:
-1/5 + (-3/5)
Least common multiple of 15 and 5 is 15. Convert and to fraction with a denominator of 15.
Since and have the same denominator, subtract them by subtracting the numerators.
Subtract 9 from -1 to get -10
Reduce the fraction to lowest terms
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Answer:
4120 feets
Step-by-step explanation:
Given that:
Starting elevation = 0 feets
Elevation gained on first day = 2150 feets
Total elevation at the end of day 1 = 0 + 2150 = 2150 feets
Elevation gained on second day = 1970 feets
Total elevation at the end of day 2 = 2150 + 1970 = 4120 feets
Elevation at the end of 3 rd day = 0 feets
Hence, elevation lost on day 3 ;
(4120 - 0) = 4120 feets
The answer is D
Because if you replace the variables just by testing them they give the answer as X=-3 and Y=3.
In which replacing:
3(-3)+5(3)=6
and with the other equation we've got:
4(-3)+2(3)=-6
so they comply with the required to be the correct answer, even though you can make a system of equation.
Answer:
4 percent
Step-by-step explanation:
because the new value is greater than the old value
Using an hypothesis test, it is found that:
The p-value of the test is 0.177 > 0.05, which means that there is not significant evidence that the proportion of male goslings is not 50%.
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- Test if the proportion of male goslings is different of 50%.
- At the null hypothesis, it is tested if the proportion is of 50%, that is:
- At the alternative hypothesis, if is tested if the proportion is different of 50%, that is:
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The test statistic is given by:
In which
- p is the proportion tested.
- X is the sample proportion.
- n is the size of the sample.
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- The proportion tested is 0.5, thus
- The sample proportion is 17 out of 27, thus .
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The value of the test statistic is:
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- Two-tailed test, thus the p-value of the test is P(|z| > 1.35), which is 2 multiplied by the p-value of z = -1.35.
- Looking at the z-table, z = -1.35 has a p-value of 0.0885.
- The p-value of the test is:
The p-value of the test is 0.177 > 0.05, which means that there is not significant evidence that the proportion of male goslings is not 50%.
A similar problem is given that brainly.com/question/24166849