<u>The population in this setting is(A) All customers who have purchased something in the last year.</u>
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Step-by-step explanation:
As it is given in the question that 1000 customers from the list of the customers who made a purchase last year.So the list refers to the population of the people who have made a purchase last year .
The 1000 customers are the sample of the population.
9514 1404 393
Answer:
3. $6000 at 8%; $5000 at 5%
4. 66 2/3 gallons of 9%; 133 1/3 gallons of 6%
Step-by-step explanation:
For many mixture problems, it works well to let a variable represent the amount of the largest contributor used in the mix.
3. Let x represent the amount invested at 8%. Then the total interest is ...
8%x +5%(11000-x) = 730
3%x = 730 -550
x = 180/0.03 = 6000
$6000 was invested at 8%; $5000 was invested at 5%.
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4. Let x represent the number of gallons of 9% content. Then the alcohol content of the mix is ...
9%x +6%(200 -x) = 7%(200)
3%x = 1%(200) . . . . . subtract 6%(200)
x = 200/3 = 66 2/3 . . . . . divide by 3%
200 -x = 133 1/3
66 2/3 gallons of 9% wine and 133 1/3 gallons of 6% wine should be used.
2x^2-11x+12=0
Slip and slide
x^2-11x+24=0
(x-8)(x-3)
(x-8/2)(x-3/2)
(x-4)(2x-3)
Use ZPP
x-4=0
x=4
2x-3=0
2x=3
x=3/2
Final answer: x=3/2, x= 4
90degree counterclockwise rotation.
