You could do 33, 36, 39, 42
K=cd formula hope this helps
Answer:
a. We are 99% confident that the average age of all golfers that play on the golf course is greater than 21.29
Step-by-step explanation:
x% confidence interval:
A confidence interval is built from a sample, has bounds a and b, and has a confidence level of x%. It means that we are x% confident that the population mean is between a and b.
In this question:
99% confidence interval for the average age of golfers that play on the area is (35.683, 43.763), which means that we are 99% confident that the mean age of all golfers who play in the area is a value in this interval, and the best conclusion is given by option A, as the lower bound of the interval is greater than 21.
Answer:
x2 - 9x - 11
Step-by-step explanation:
Step 1 :
Equation at the end of step 1 :
((((2x2 - 4x) - 3) - x2) - 5x) - 8
Step 2 :
Trying to factor by splitting the middle term
2.1 Factoring x2-9x-11
The first term is, x2 its coefficient is 1 .
The middle term is, -9x its coefficient is -9 .
The last term, "the constant", is -11
Step-1 : Multiply the coefficient of the first term by the constant 1 • -11 = -11
Step-2 : Find two factors of -11 whose sum equals the coefficient of the middle term, which is -9 .
-11 + 1 = -10
-1 + 11 = 10
Observation : No two such factors can be found !!
Conclusion : Trinomial can not be factored
Final result :
x2 - 9x - 11
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