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PREP07 Test 2 Is $$x^4+y^4>z^4$$ ?(1) $$x^2+y^2>z^2$$(2) x + y > z
300难题 Of the following, which is greatest?
Ready4

A retailer determines the price of a certain item by adding 20% to wholesale cost she paid for each item. Of a particular batch of 50 of those items, the retailer sold 40 at full price, then sold the remainder to a liquidator for 40% of the wholesale price. Which of the following describes the retailer's loss or profit as a percentage of her costs?
第一期 x and y are positive integers and $$x·y^{3}$$ is an even number. Which of the following must be even?
191020 What's the value of $$\left( 900 ^ { 900 } + 30 ^ { 1800 } \right) ^ { 2 } $$?
191020 $$ \frac { 4 } { \frac { \sqrt { 5 } - 1 } { \sqrt { 5 } + 1 } } = ? $$
181215 x,y are positive integers and x*$$y^{3}$$ is an even number. Which of the following must be even?
If $$\sqrt x=25$$, then $$x^3-x^2=$$
GMAT、gmat题库、gmat模考、gmat考满分In the figure, each side of square ABCD has length 1, the length of line segment CE is 1, and the length of line segment BE is equal to the length of line segment DE. What is the area of the triangular region BCE?
$$(\frac {1}{4-\sqrt{15}})^{2}=$$
Magoosh $${2+\sqrt{2}}\over{2-\sqrt{2}}$$
Magoosh If x and y are both positive then $$\sqrt{72x^{3}y^{16}}$$ =
Magoosh What is the Greatest Common Factor (GCF) of $$18x^{8}y^{20} and 24x^{12}y^{15}$$?
Magoosh $$(2xy^{2})*(7x^{3}y^{3})$$=
Magoosh $$(5\frac{5}{8})\over(4\frac{1}{2})$$=
Magoosh $$({\sqrt{5+\sqrt{5}}-}{\sqrt{5-\sqrt{5}}})^{2}$$=
A factory worker produced one lot of connecting clips, and initial quality control found that $$\frac{5}{7}$$ of clips in the lot could be used. An assembly plant purchased this lot of clips valuing the lot at $3 per each usable clip. During assembly, it became known that only $$\frac{3}{5}$$ of the clips in the lot were usable. What was price per usable clip that the assembly plant paid for the lot?
PREP07 Test 2 The value of $$(-89)^\frac{1}{3}$$ is
PREP07 Test 1 Which of the following inequalities has a solution set that, when graphed on the number line, is a single line segment of finite length?
OG18-定量推理 One inlet pipe fills an empty tank in 5 hours. A second inlet pipe fills the same tank in 3 hours. If both pipes are used together, how long will it take to fill $$\frac{2}{3}$$of the tank?