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What is the value of x?(1) $$\mid{x+2}\mid \leq 4$$(2) $${x}^{2}=36$$
应用题 If a is an integer, is a < 4 ?(1) $${10}^{-2a+2}<{0.001}.$$(2) $${10}^{-2a}<{0.0001}.$$
What is the value of y?(1)4y-3 = y + 1(2)$${1}-\frac{2}{y}={4}$$
PREP07 Test 2 If w and z are positive, is$$\frac{w}{z}$$ < 1 ?(1) w < z(2) z < 4
Manhattan What is the value of x? (1) x + 2y = 4(2) 5x + y + 15 = 3x – 3y + 23
从A市到C市途径B市有上下车, 到C市的时候剩$$\frac{1}{4}$$(狗主编造)的人, 问A市上车的有多少人？1 B市下车比上车多2人2 B市下的人占总数的$$\frac{1}{4}$$
Ready4

The ages of all children in Group A are the same, and the ages of all children in Group B are the same. Is the age of a child in Group A less than the age of a child in Group B?

  1. The sum of the ages of 3 children in Group A and 2 children in Group B is less than the sum of ages of 2 children in Group A and 4 children in Group B.
  2. The sum of the ages of 4 children in Group A and 3 children in Group B is less than the sum of ages of 3 children in Group A and 4 children in Group B.
Magoosh Which of the following is the correct ordering of $$2\sqrt{13},4\sqrt{3},5\sqrt{2}$$ and$$3\sqrt{6}$$ ?
OG19-数学分册 If x and k are integers and $$(12^{x})(4^{2x+1}) = (2^{k})(3^{2})$$, what is the value of k ?
Ready4

Organic fertilizers are made from mineral deposits along with bone meal, plant meal, or composted manure, while synthetic fertilizers are made by processing synthetic chemicals. The numeric ratio listed on a fertilizer, whether it's organic or synthetic, indicates the proportions of the primary nutrients—nitrogen, phosphate, and potash—inside. For example, a bag of fertilizer labeled 4-8-6 contains 4 percent nitrogen, 8 percent phosphate, and 6 percent potash. A 100-pound bag of 4-8-6 organic fertilizer and a 100-pound bag of 4-8-6 synthetic fertilizer may differ in other respects, but farmers can rest assured that the bags differ neither in the amount of primary nutrients they deliver into soil, nor in the time period those nutrients remain available to plants' root systems.

Which of the following, if true, most strengthens the argument above?
OG12 OG15 OG16 OG17 OG18 If n is an integer, is n even?(1)$$n^2 - 1$$ is an odd integer.(2)3n + 4 is an even integer.
OG19-数学分册 If r, s, and tare nonzero integers, is $$r^{5}s^{3}t^{4}$$ negative? (1) rt is negative. (2) s is negative.
181215 n=？ 1: The greatest common factor for n and 12 is 4. 2: The least common multiple of n and 12 is 60.
190124 What is the unit digit number of $$2^{k}$$ ? 1: k can be divided by 10. 2: k can be divided by 4.
190124 x=3 - $$\sqrt{2}$$ is the solution of which of the following equations?
190124 Which of the following functions has no intersection with the x axis?
Ready4

If arc PQR above is a semicircle, what is the length of diameter PR?

(1) a = 4

(2) b = 1
190310 $$B_n=A_{n+1}-A_{n},B_{n+1}-B_{n}=2$$.$$A_{10}$$=?
1: $$A_1=1,A_3=3$$
2: $$A_2=2,A_4=4$$
PREP07 Test 1 GMAT、gmat题库、gmat模考、gmat考满分The circle shown has center O and radius 4. What is the area of the shaded region?
OG16 OG17 OG18 OG19 OG20 OG2022 If $${2}^{x+y}$$ = $${4}^{8}$$, what is the value of y?(1) $${x}^{2}$$ = 81(2) x − y = 2