SAT Math MustKnow Facts Formulas

... – THE SAT MATH SECTION – math section on a past SAT The distribution of questions on your test will vary Part 1: Five-Choice Questions 1 The five-choice questions in the Math section of the SAT ... in the math glossary on page 255 Learning the language of math is very important to your success on the SAT Good luck! SAT Math at a Glance There are on...

Ngày tải lên: 01/11/2013, 14:20

... in the math glossary on page 255 Learning the language of math is very important to your success on the SAT Good luck! SAT Math at a Glance There are one 20-minute and two 25-minute math sections, ... triangle: 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 opposite t...

Ngày tải lên: 02/11/2013, 17:20

... labeled (10 a + 5) and its supplement, which is equal to (8b + 1) , total 18 0 degrees: (10 a + 5) + (8b + 1) = 18 0 If b = 8, then: (10 a + 5) + (8(8) + 1) = 18 0 10 a + 70 = 18 0 10 a = 11 0 a = 11 11 The ... – m) = m2 – n2 + m 11 e x 1 = 1 = x ᎏ – 1 = –4; –ᎏ3ᎏ = – ᎏ = ᎏ3ᎏ 4x + = 8x 4(– 1 ) + = 1 + = 1 ᎏ1x = ᎏ = 81 4ᎏ = 8ᎏ – 1 81 8(– ᎏ4ᎏ) 2; 16 x = 16 –ᎏ4ᎏ = ᎏ 16 1 = 1...

Ngày tải lên: 02/11/2013, 18:20

... terminating decimal (͙ 32 = (͙ 32 ෆ) ෆ)(͙ 32 ෆ)(͙ 32 = 32 32 ෆ) ෆ = 32 16 ෆ = ( 32) (4) 2 = 128 2 2 canෆ 2 ෆ ෆ ෆ not be expressed as a repeating or terminating decimal, therefore, 128 2 is an irrational ... distance from (–1 ,2) to (11,–7): Distance = ͙(x2 – xෆෆ ෆ1 )2 + (y2 – y1 )2 Distance = ͙(11 – (ෆෆ– 2) 2 ෆ–1) )2 + ((–7) ෆ Distance = ͙( 12) 2 +ෆ ෆ (–9 )2 Distance = ͙144 + 8...

Ngày tải lên: 02/11/2013, 18:20

... 2 2 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 6 6 6 6 6 6 6 6 6 6 7 7 7 7 7 7 7 7 7 7 8 8 8 8 8 8 8 8 8 8 9 9 9 9 9 9 9 9 9 9 2 23 – LEARNINGEXPRESS ANSWER SHEET – Section 3 a ... and for y: (3xy + x)ᎏxᎏ = y 2 32 ( (3) (2)(5) + 2)ᎏ5ᎏ = (30 + 2)ᎏ5ᎏ = 32 ᎏ5ᎏ = (͙ෆ)2 = 22 = Or, 3( 2)(5) = 30 , 30 + = 32 , the 5th root of 32 is 2, raised to the 2nd power is ...

Ngày tải lên: 02/11/2013, 18:20

... the same day? –3 y 25 If the operation ∇ is defined by the equation x∇y = 3x + 3y, what is the value of 3∇4? 107 x 5658 SAT2 006[04](fin).qx 11/21/05 6:44 PM Page 108 – THE SAT MATH SECTION – Math ... 5658 SAT2 006[04](fin).qx 11/21/05 6:44 PM Page 117 – THE SAT MATH SECTION – When you find the elements that two (or more) sets have in common, you are finding the i...

Ngày tải lên: 18/06/2014, 17:20

... if an increase 5658 SAT2 006[04](fin).qx 11/21/05 6:44 PM Page 143 – THE SAT MATH SECTION – in one causes an increase in the other This is also true if a decrease in one causes a decrease in the ... angles that are all equal Angles of a Quadrilateral A quadrilateral is a four-sided polygon Since a quadrilateral can be divided by a diagonal into two...

Ngày tải lên: 18/06/2014, 17:20

... If the lengths of two sides of an isosceles triangle are and 20, what is the perimeter of the triangle? 23 If the integer lengths of the three sides of a triangle are 5, x, and 10, what is the ... equilateral, so AC ෆෆ = 10 Angles BDE and BED each measure 60 + 15 = 75°, since they are exterior angles of triangles ADB and CEB Therefore, triangles ADB and...

Ngày tải lên: 18/06/2014, 17:20

... customers Now that you’ve purchased LearningExpress’s SAT Math Essentials, you have FREE access to: ■ ■ ■ ■ Practice exercises modeled on actual SAT Math questions Immediate scoring and detailed answer ... customized diagnostic report Improve your math knowledge and overcome math anxiety Follow the simple instructions on the scratch card in your copy of SAT Math Essentials...

Ngày tải lên: 22/07/2014, 10:22

... 2(6e2) 3e3 = 12e2 3e = 12 e=4 The edge of the cube is four units and the surface area of the cube is 6(4)2 = 96 square units ᎏ8ᎏ The set of whole number factors of 24 is {1, 2, 3, 4, 6, 8, 12, 24} ... 3, 4, 6, 8, 12, 24} Of these numbers, four (4, 8, 12, 24) are multiples of four and three (6, 12, 24) are multiples of six Be sure not to count 12 and 24 twice—there are five numbers out...

Ngày tải lên: 22/07/2014, 10:22

... test is a simulation of the three Math sections you will complete on the SAT To receive the most benefit from this practice test, complete it as if it were the real SAT So take this practice test ... students have left so far, how many students are still in the auditorium? 11 If point A is at (–1,2) and point B is at (11, –7), what is length of line AB? 12 Robert is practicing for the...

Ngày tải lên: 22/07/2014, 10:22

... there are parts red paint, parts green paint, and parts yellow paint Now we must first determine how many total parts there are in the ratio: parts red ϩ parts green ϩ parts yellow ϭ 12 total parts ... This means that for every 12 parts of paint, parts are red, parts are green, and parts are yellow We can now set up a new ratio for red paint: parts red paint:12 total parts ϭ 6:12 ϭ ᎏ6ᎏ 12 Beca...

Ngày tải lên: 22/07/2014, 10:22