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Trying to solve an impossible mathematics problem can produce useful results.
General
4 months ago
To the nearest degree, what is the measure of each exterior angle of a regular 11-gon?
General
4 months ago
Suppose that a customer service center claims that the telephone calls it receives last 114 seconds on average, with a standard deviation of 9 second. If you took a sample of 324 telephone calls, which of the following mean times would be within the 95% confidence interval
General
4 months ago
Zack rested a 15 foot ladder against a building the foot of the ladder is 9 feet from the base of the building how many feet up the building does the ladder reach
General
4 months ago
An amusement park sells adult tickets and children’s tickets, with adults tickets costing $5 and children’s tickets costing $3. If Ed bought 15 tickets and spent a total of $57, how many children’s tickets did he buy? 3 5 6 9
General
4 months ago
There is a 70% chance that a person eats dinner, a 50% chance a person eats dessert and a 35% chance the person will eat dinner and dessert. Which of the following is true?A. Eating dinner and eating dessert are dependent events because P(dinner)*P(dessert)=0.7*0.5=0.35 which is equal to P(dinner and dessert)=0.35.B. Eating dinner and eating dessert are independent events becauseP(dinner)-P(dessert)=0.7-0.5=0.2 which is less than P(dinner and dessert)=0.35.C. Eating dinner and eating dessert are dependent events because P(dinner)-P(dessert)=0.7-0.5=0.2 which is less than P(dinnerand dessert)=0.35.D. Eating dinner and eating dessert are independent events because P(dinner)*P(dessert)=0.7*0.5=0.35 which is equal to P(dinnerand dessert)=0.35.
General
4 months ago
In the first round of a golf tournament there were 2 eagles, 16 birdies, 39 pars, 16 bogies, and 8 double bogies on the 18th hole. if a player is selected at random, what is the probability that he had a birdie on the 18th hole during the first round
General
4 months ago
A truck's gas tank holds 50 gallons of gas. if one gallon takes 30 seconds to pump, how many minutes will it take to fill the empty tank?
General
4 months ago
The function graphed models the profits, P(c), in thousands of dollars a store earns as a function of the number of clerks, c, working that day.Which statements are true based on the model?Select each correct answer.A) The store earns about $19,500 in profits on its best days.B) The store loses money when 20 or more clerks are working.C) The store earns profits when no clerks are working.D) Maximum profits are earned when there are 19 clerks working.E) Maximum profits are earned when there are 10 clerks working.
General
4 months ago
2 arithmetic sequences and series find the indicated term of each arithmetic sequence. 1. find the sixtieth term of the arithmetic sequence if a1 = 418 and d = 12. 2. find a23 in the sequence, –18, –34, –50, –66, .... write an equation for the nth term of each arithmetic sequence. 3. 45, 30, 15, 0, ... 4. –87, –73, –59, –45, ... find the sum of each arithmetic series. 5. 5 + 7 + 9 + 11 + ... + 27 6. –4 + 1 + 6 + 11 + ... + 91 7. 13 + 20 + 27 + ... + 272 8. 89 + 86 + 83 + 80 + ... + 20 9. ∑ (1 − 2n) 4 n=1 10. ∑ (5 + 3j) 6 j=1 11. ∑ (9 − 4n) 5 n=1 12. ∑ (2k + 1) 10 k=4 13. ∑ (5n − 10) 8 n=3 14. ∑ (4 − 4n) 101 n=1 find the first three terms of each arithmetic series described. 15. a1 = 14, an = –85, sn = –1207 16. a1 = 1, an = 19, sn = 100 17. n = 16, an = 15, sn = –120 18. n = 15, an = 54 5 , sn = 45 name _____________________________________________ date_____________________________ period _____________ 19. stacking a health club rolls its towels and stacks them in layers on a shelf. each layer of towels has one less towel than the layer below it. if there are 20 towels on the bottom layer and one towel on the top layer, how many towels are stacked on the shelf? 20. windows a side of an apartment building is shaped like a steep staircase. the windows are arranged in columns. the first column has 2 windows, the next has 4, then 6, and so on. how many windows are on the side of the apartment building if it has 15 columns? 21. training more than 380,000 people run in u.s. marathons each year. matthew is training to run a marathon. he runs 20 miles his first week of training. each week, he increases the number of miles he runs by 4 miles. how many total miles did he run in 8 weeks of training?
General
4 months ago
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