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LUCKY_DIMON [66]
3 years ago
5

A group of friends wants to go to the amusement park. They have $201.75 to spend on parking and admission. Parking is $5.75, and

tickets cost $24.50 per person, including tax. How many people can go to the amusement park?
Mathematics
1 answer:
Mice21 [21]3 years ago
7 0

Answer:

8 friends

Step-by-step explanation:

The group of friends will park only once, so you only need to add $5.75 once, but you still need to add the amount of money for all the people who are in the car, 24.50 x 8 is equal to exactly 196 dollars, so 196 + 5.75 is equal to exactly 201.75, which is the amount of money the group has, so 8 people can come.

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A certain test preparation course is designed to help students improve their scores on the GMAT exam. A mock exam is given at th
Bogdan [553]

Answer:

95% confidence interval for the average net change is between a lower limit of 11.709 and an upper limit of 30.921.

The critical value that should be used in constructing the confidence interval is 4.303.

Step-by-step explanation:

Confidence interval is given as mean +/- margin of error (E)

mean = (17+20+26)/3 = 63/3 = 21

sd = sqrt[((17-21)^2 + (20-21)^2 + (26-21)^2) ÷ 3] = sqrt(42÷3) = sqrt(14) = 3.74

n = 3

degree of freedom = n-1 = 3-1 = 2

confidence level (C) = 95% = 0.95

significance level = 1 - C = 1 - 0.95 = 0.05 = 5%

critical value (t) corresponding to 2 degrees of freedom and 5% significance level is 4.303.

The critical value is 4.303

E = t×sd/√n = 4.303×3.74/√3 = 9.291

Lower limit of mean = mean - E = 21 - 9.291 = 11.709

Upper limit of mean = mean + E = 21 + 9.291 = 30.291

95% confidence interval is (11.709, 30.391)

8 0
3 years ago
Find the perimeter of the polygon with the vertices U(-2,4), V(3,4) W(3,-4). Round your answer the nearest hundredths
Nastasia [14]

Answer:

22.43

Step-by-step explanation:

three points ==> it's a triangle

so we will just have to calculate the length of each side

U & V has the same y-coordinate, which means UV is a horizontal line ==>

UV = 3 - (-2) = 5

V & W has the same x-coordinate, which means VW is a vertical line ==>

VW = 4 - (-4) = 8

UW is not a horizontal line nor a vertical line, so we will have to calculate it using distance formula

UW = sqrt { [3 - (-2)]^2 + [-4 - 4]^2 } = sqrt{25 + 64} = sqrt(89) ~~ 9.43

so the perimeter of the polygon is UV + VW + UW = 5 + 8 + 9.43 = 22.43

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A survey of 2400 was given to people who owned a certain type of car, 1080 said they would buy that type of car again. What perc
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Answer: 45% were completely satisfied with the car.

Step-by-step explanation: You have to divide 1080 by 2400 and then change the deciman into a percentage.

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Then, the dot ran from −34 to −66. What distance did it cover? If this run took the dot 5 minutes, what was its average speed?
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Answer:

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Step-by-step explanation:

since the absolute value of everything is positive, we can subtract 66-34, to learn that it covered 32 units, in means of distance, and then 32 divided by 5 is 6.4, which mean it covered an average of 6.4 units per minute


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