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... complimentary if the sum of their measures is equal to 90 degrees. 1 2 ∠1 + m∠2 = 90 ° Complementary Angles m Straight Angle 180° Obtuse Angle Right Angle Symbol – THE GRE QUANTITATIVE SECTION 180 Solution: Because ... 180° Supplementary Angles m – THE GRE QUANTITATIVE SECTION 181 ■ A right angle is an angle that measures exactly 90 degrees. A right angle is sumbolized by a s...

Ngày tải lên: 07/08/2014, 13:21

... with the other angles measuring 30 and 60 degrees: ■ The leg opposite the 30-degree angle is half the length of the hypotenuse. (And, therefore, the hypotenuse is two times the length of the leg ... leg opposite the 30-degree angle.) ■ The leg opposite the 60-degree angle is 3 times the length of the other leg. 10͙2 ෆ ᎏ 2 ͙2 ෆ ᎏ 2 10 x x ͙2 ෆ ᎏ 2 45° 45° – THE GRE...

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... is a right angle A B C – THE GRE QUANTITATIVE SECTION 144 T his chapter will help you prepare for the Quantitative section of the GRE. The Quantitative sec- tion of the GRE contains 28 total questions: ■ 14 ... sen- tences as the previous question and adds the previous sentence. Lines 3 — 8 contain the state- ments that argue that the truth of the proposi- tions d...

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... She then sold the skateboard for $120. the money Ida received in excess of the total amount she spent $20 3. xy 4. –2(–2)(–5) (0)(3) (9) x° z° y° l 1 l 2 l 1 ʈ l 2 – THE GRE QUANTITATIVE SECTION 147 1. ... y = 3x and z = 2y, then in terms of x, x + y + z = a. 10x. b. 9x. c. 8x. d. 6x. e. 5x. A BC D P x° y° – THE GRE QUANTITATIVE SECTION 1 49 15. The rectangular rug show...

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... placement of the decimal point in the answer, count the numbers located to the right of the decimal point in the decimals being multiplied. The total numbers to the right of the decimal point in the original ... Subtract the absolute values of the numbers. 2. Keep the sign of the number with the larger absolute value. Examples: –2 + 3 = Subtract the absolute va...

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... of the number 3. If we reverse the process, we can say that the number 3 is the square root of the number 9. The symbol for square root is ͙ ෆ and is called the radical. The number inside of the ... all the variables on one side and all the numbers on the other. 4. The final step often is to divide each side by the coefficient, leaving the variable equal to a numb...

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... using the reverse of the distributive law. Example: In the binomial 49x 3 + 21x,7x is the greatest common factor of both terms. Therefore, you can divide 49x 3 + 21x by 7x to get the other factor. ᎏ 49x 3 7 + x 21x ᎏ = ... all the variables on one side and all the numbers on the other. 4. The final step often is to divide each side by the coefficient, leaving the variable...

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... for x. x – 9 = 2y x – 9 = 2(2) x – 9 = 4 x – 9 + 9 = 4 + 9 x = 13 ■ The answer to the system of equations is y = 2 and x = 13. Inequalities Linear inequalities are solved in much the same way ... law. Example: In the binomial 49x 3 + 21x,7x is the greatest common factor of both terms. Therefore, you can divide 49x 3 + 21x by 7x to get the other factor. ᎏ 49x 3 7 + x 21...

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... degrees. Acute Angle 1 2 AC D B Endpoint, or Vertex ray ray – THE GRE QUANTITATIVE SECTION 1 79  Geometry Review About one-third of the questions on the Quantitative section of the GRE have to do with geometry. How- ever, you will ... angle. l 1 l 2 l l 2 1 A B l – THE GRE QUANTITATIVE SECTION 178 Translating Words into Numbers The most important skill needed for wor...

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