One number is 3 less than 4 times a second number. The difference of the
1 answer:
Answer:
17 and 5
Step-by-step explanation:
Interesting question!
Turn both sentences to equations:
a is the first number, and b is the second number.
A system of equations! A graphing calculator will do the work:
(See picture)
The y in the picture is a, and the x in the picture is b.
So the solution is a=17 and b=5
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Answer:
See explanation below.
Step-by-step explanation:
Assuming the following function:
Where y represent the sales and t the years after a particular model is introduced.
For this case if we find the domain for this function we have this:
Since the neatural log for negative numbers or 0 is not defined.
So then
And the range on this case is all the possible reals.
The sales are equal to 0 when:
If we exponential both sides we got:
So then the x intercept is . We don't have y intercept since the function not touch the y axis.
And we don't have a relative maximum or minimum since the function is increasing over the interval of all the reals.
The plot of the function is on the figure attached.
Answer:
Step-by-step explanation:
Quality management Excellent Good Fair Total
Excellent 40 25 5 70
Good 35 35 10 80
Fair 25 10 15 50
Total 100 70 30 200
The null and alternative hypothesis:
The expected value is calculated by using the formula:
After using the formula to calculate the table above; we have:
The expected values of the data to be:
Quality management Excellent Good Fair Total
Excellent 35 24.5 10.5 70
Good 40 28 1.2 80
Fair 25 17.5 7.5 50
Total 100 70 30 200
Degree of freedom = ( row - 1 ) × ( column -1 )
Decision rule: To reject the if the p-value is less than the ∝
Conclusion: We reject the and conclude that quality management and reputation are not independent.
(B)