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Ready4

1−( 2 3 − 3 4 )=
PREP07 Test 2 The number of years of service of the eight employees in a production department are 15, 10, 9, 17, 6, 4, 14, and 16. What is the range in the number of years of service of the eight employees?
The membership of a committee consists of 3 English teachers, 4 Mathematics teachers, and 2 Social Studies teachers. If 2 committee members are to be selected at random to write the committee's report, what is the probability that the two members selected will both be English teachers?
In a list of numbers, the first number is 3, the second is 4, and each subsequent number is the sum of all the preceding numbers in the list. If the 20th number in the list is x, what is the 25th number in the list?
Ready4

A group of people bought $180 worth of theater tickets costing either $10 or $25. How many tickets costing $10 were bought?

(1) Fewer than 4 tickets costing $25 were bought.

(2) More than 10 tickets costing $10 were bought.
OG18-数学分册 For every even positive intger m, f(m) represents the product of all even integers from 2 to m, inclusive. For example, f(12) = 2 x 4 x 6 x 8 x 10 x 12. What is the greatest prime factorof f(24)?
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Producers of jazz albums tend to back artists that they expect will gain popularity in the key European market, or who are popular already.
Ready4 It would take one machine 4 hours to complete a large production order and another machine 3 hours to complete the same order. How many hours would it take both machines, working simultaneously at their respective constant rates, to complete the order?
OG12 OG15 OG16 OG17 It would take one machine 4 hours to complete a large production order and another machine 3 hours to complete the same order. How many hours would it take both machines, working simultaneously at their respective constant rates, to complete the order?
A certain state has a sales tax of 5 percent on the portion of a purchase price that is greater than $100. If a customer paid a sales tax of $4 on a particular item, what was the purchase price of the item?
应用题 John deposited $10,000 to open a new savings account that earned 4 percent annual interest, compounded quarterly. If there were no other transactions in the account, what was the amount of money in John's account 6 months after the account was opened?
排列组合 An analyst will recommend a combination of 3 industrial stocks, 2 transportation stocks, and 2 utility stocks. If the analyst can choose from 5 industrial stocks, 4 transportation stocks, and 3 utility stocks, how many different combinations of 7 stocks are possible?
PREP07 Test 1 The total cost of a vacation was divided equally among 3 people. If the total cost of the vacation had been divided equally among 4 people, the cost per person would have been $50 less. What was the total cost of the vacation?
PREP07 Test 2 Joshua and Jose work at an auto repair center with 4 other workers. For a survey on healthcare insurance, 2 of the 6 workers will be randomly chosen to be interviewed. What is the probability that Joshua and Jose will both be chosen?
190310 A positive integer x is a multiple of 5. What is the remainder of x when divided by 6?
1: The remainder of x is 3 when divided by 12.
2: The remainder of x is 3 when divided by 4.
OG18-数学分册 If a and b are positive integers, what is the value of the product ab?(1) The least common multiple of a and b is 48.(2) The greatest common factor of a and b is 4.
OG19-数学分册 In pentagon PQRST, $$PQ = 3$$, $$QR= 2$$, $$RS= 4$$, and $$ST= 5$$. Which of the lengths 5, 10, and 15 could be the value of PT ?
Ready4

If 1− 1 y = y 4 , then y has how many possible values?
Bill is 88 years old. How old is Colie?1. 4 years ago Colie was twice as old as Dino will be in 2 years.2. Bill is twice as old as Colie and Dino combined.
Manhattan When Jessica withdrew $200 from her bank account, her account balance decreased by $$\frac{2}{5}$$. If she deposits an amount equal to$$\frac{ 1}{4}$$ of the remaining balance, what will be the final balance in her bank account?