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190302
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x=$$\sqrt{3}$$+$$\sqrt{7}$$.x+$$\frac{1}{x}$$=?
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Magoosh
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If $$4^{n} + 4^{n} + 4^{n} + 4^{n} = 4^{16}$$ , then n =
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In the xy-plane, if line k passes through the points (3,-4) and (a,b), where b=4a-16 and a≠3, what is the slope of k?
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OG17 OG18
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The chart depicts the organizational structure of the government of City C. Currently, 5 departments report directly to the City Manager, and each department consists of 2–5 agencies. Due to budgetary concerns, the government will be restructured as follows. The Human Resources Department and its agencies will be eliminated. Payroll will be moved to the Finance Department where it will be part of a single agency created by consolidating Accounting and Collections; Building Maintenance responsibilities will be transferred to Engineering. The Police and Fire Departments will be consolidated into a single department, and Prevention and Suppression will be merged into a single agency of that consolidated department.From the drop-down menus, select the options that create the most accurate statement based on the information provided. 2A. As a result of the restructuring, a total of departments will report to the City Manager, and the maximum number of agencies per department will be
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Magoosh
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The entire contents of a full sack of flour can be used to make 15 cupcakes and 8 pizzas. The same full sack of flour can be used to make 7 cupcakes and 14 pizzas. If a full sack of flour is used to make only pizzas, how many pizzas can be made?
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Magoosh
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Working together, 7 identical pumps can empty a pool in 6 hours. How many hours will it take 4 pumps to empty the same pool?
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The cost of an air conditioner is b dollars more than 3 times the cost of a radio. The total of an air conditioner and a radio is v dollars. Which of the following is the cost of an air conditioner, in dollars?
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190321
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Circle O is internally tangent to a square ABCD. The radius of circle O is 2m. What is the area of the shaded part of the graph?
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300难题
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If each side of △ACD above has length 3 and if AB has length 1, what is the area of region BCDE?
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Ready4
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If  , then  is equal to
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190603
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There is originally a mixture of 9 liters of x and water, with water accounting for 75%. How much water was poured and replaced with same amount of x, and the final volume of water accounted for 50%?
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190321
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The line $$l_1$$ is perpendicular to the line $$l_2$$, whose equation is y=3x+4. What is the slope of $$l_1$$?
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190310
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A, B is independent of each other. The probability of occurrence of event A is 1/3, and that of event B is 1/2. What is the probability that only A or B will happen?
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191020
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A fair coin is tossed twice,what's the probability of getting at least one head?
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191020
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Each letter of the word "College" is written on a piece of paper (7 pieces of paper in total). Now just take one piece of papers randomly. What is the probability of getting a letter that happens to appear twice (l or e)?
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191222
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If 5x-y=59, and y is an integer from 1 to 18, inclusive. What is the probability that x is also an integer?
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190407
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$$\frac{4}{(\sqrt{5}-1)(\sqrt{5}+1)}$$=?
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191031
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A circle with a radius of 12 inches is cut out of a sector with a central angle of 120 degrees. Use the remaining sectors to make a cone. What is the altitude of the cone?
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OG18-定量推理
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The points R, T, and U lie on a circle that has radius 4. If the length of arc RTU is $$\frac4 3\pi$$, what is the length of line segment RU?
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PREP07 Test 1
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If the average (arithmetic mean) of the 4 numbers n+2, 2n - 3, 4n + 1, and 7n + 4 is 15, what is the value of n?
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