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While driving on the expressway, did Robin ever exceed the 55-mile-per-hour speed limit?(1)Robin drove 100 miles on the expressway(2)Robin drove for 2 hours on the expressway
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OG12 OG15 OG16
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When a player in a certain game tossed a coin a number of times, 4 more heads than tails resulted. Heads or tails resulted each time the player tossed the coin. How many times did heads result?(1)The player tossed the coin 24 times.(2)The player received 3 points each time heads resulted and 1 point each time tails resulted, for a total of 52 points.
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If n and k are greater than zero, is$$\frac n k$$ an integer(1)n and k are both integers.(2)$${n}^{2}$$ and $${k}^{2}$$ are both integers.
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Is |x| =y-z?(1)x+y=z(2)x < 0
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OG12 OG15 OG16
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 In the figure above, what is the value of x + y ?(1)x = 70(2)△ABC and △ADC are both isosceles triangles.
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If each of the 8 employees working on a certain project received an award, was the amount of each award the same?(1)The standard deviation of the amounts of the 8 awards was 0.(2)The total amount of the 8 awards was $10,000.
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What is the value of $${p}^{r}$$?(1)$$p = 1$$(2)$$r = 1$$
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The total charge to rent a car for one day from Company J consists of a fixed charge of $15.00 plus a charge of $0.20 per mile driven. The total charge to rent a car for one day from Company K consists of a fixed charge of $20.00 plus a charge of $0.10 per mile driven. Is the total charge to rent a car from Company J for one day and drive it x miles less than $25.00 ?(1)The total charge to rent a car from Company K for one day and drive it x miles is less than $25.00.(2)x < 50
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OG12 OG15 OG16 OG17 OG18
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Guy's net income equals his gross income minus his deductions. By what percent did Guy's net income change on January 1, 1989, when both his gross income and his deductions increased?(1)Guy's gross income increased by 4 percent on January 1, 1989.(2)Guy's deductions increased by 15 percent on January 1, 1989.
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Professor Vasquez gave a quiz to two classes. Was the range of scores for the first class equal to the range of scores for the second class?(1)In each class, the number of students taking the quiz was 26, and the lowest score in each class was 70.(2)In each class, the average (arithmetic mean) score on the quiz was 85.
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If xyz $$\neq 0$$, is $$x(y+z) \ge 0$$ ?(1)|y+z| = |y|+|z|(2)|x+y| = |x|+|y|
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If $$xy \neq 0$$, what is the value of $$\frac {25x^2} {y^2}$$?(1)$$x = 3$$(2)$$5x - 2y = 0$$
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Is the standard deviation of the salaries of Company Y's employees greater than the standard deviation of the salaries of Company Z's employees?(1)The average (arithmetic mean) salary of Company Y's employees is greater than the average salary of Company Z's employees.(2)The median salary of Company Y's employees is greater than the median salary of Company Z's employees.
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OG12
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What was the price at which a merchant sold a certain appliance?(1)The merchant's gross profit on the appliance was 20 percent of the price at which the merchant sold the appliance.(2)The price at which the merchant sold the appliance was $50 more than the merchant's cost of the appliance.
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KMFDS
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If a and b are positive, is $$(a^{-1}+b^{-1})^{-1}$$ less than $$(a^{-1}*b^{-1})^{-1}$$?(1)$$a = 2b$$(2)$$a + b > 1$$
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If $$xy\neq0$$, is $$\frac x y=1$$?(1)$$x^2=y^2$$(2)$$xy >0$$
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OG18-数学分册
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A certain university will select 1 of 7 candidates eligible to fill a position in the mathematics department and 2 of 10 candidates eligible to fill 2 identical positions in the computer science department. If none of the candidates is eligible for a position in both departments, how many different sets of 3 candidates are there to fill the 3 positions?
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KMFPS
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If n is a positive integer, what is the remainder when $${3}^{8n+3}+2$$ is divided by 5?
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2 + 2*3 + 3*4 =
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OG17
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Three printing presses, R, S, and T, working together at their respective constant rates, can do a certain printing job in 4 hours. S and T, working together at their respective constant rates, can do the same job in 5 hours. How many hours would it take R, working alone at its constant rate, to do the same job?
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