110_Making Math Work

... question Below are SV's for each month January-0 February-3 March-3 April-6 May-1 June-4 July-6 August-2 September-5 October-O November-3 December-5 So in this example of December 28, 1963 the ... In this case there are 1 5-7 's in 111, so you have left Now translate that to a day of the week like this - Sunday - Monday - Tuesday - Wednesday - Thursday - Friday -...

Ngày tải lên: 05/06/2014, 11:32

... (A) 20 % = ⋅ 120 0 = $24 0 depreciation first year = x 20 325 325 20 x = 325 325 x= ⋅ = =4 =4 20 80 80 16 $ 120 0 – $24 0 = $96 0 value after year ⋅ 96 0 = $1 92 depreciation second year $96 0 – $1 92 = ... ⋅ 12 = 6π 2 sides of square in perimeter = 24 Total perimeter of park = 16 + 6π + 24 = 40 + π Multiply every term by a 2a − 2 16 (A) $ 320 is 125 % of his former salary 320 =...

Ngày tải lên: 22/07/2014, 11:20

... < 23 Which of the following is the product of 4 327 and 546? (A) 23 625 41 (B) 23 625 42 (C) 23 625 43 (D) 23 625 46 (E) 23 625 48 www.petersons.com 323 324 Chapter 17 24 If a classroom contains 20 to 24 ... the origin? (A) (B) 2. 5 (C) (D) (E) 16 The product of 3456 and 789 is exactly (A) 27 26 787 (B) 27 26 785 (C) 27 26 781 (D) 27 26 784 (E) 27 26 786 17 Susan got up one m...

Ngày tải lên: 22/07/2014, 11:20

... average time for race to the average time for race 2? (A) 1 :2 (B) 2: 3 (C) 1:1 (D) 3 :2 (E) 2: 1 www.petersons.com 29 7 29 8 Chapter 16 PROBABILITY The new SAT includes simple questions involving probability, ... (A) (B) (C) 2 (D) 2 (E) If the radius of O1 is r and the radius of O2 is twice as long, what is the area of the shaded region? (A) πr2 (B) πr2 (C) πr2 (D) 2 r2 (E)...

Ngày tải lên: 22/07/2014, 11:20

... both (t,h) pairs: ( 96) = 80 (2) – 16 (2) 2 = 160 – 64 = 96 ( 96) = 80(3) – 16( 3 )2 = 24 0 – 144 = 96 Note that the equation in choice (C) holds for f (2) = 96 but not for f(3) = 96 Additional Geometry ... correct answer is 4 32 First, find r: × r (3−1) = 72 × r = 72 r = 36 r =6 48, 000 = 48, 000 (1 )2 48, 000 48, 000 = 12, 000 12, 000 = = (2) 2 48, 000 48, 000 3, 000 = = = 3,...

Ngày tải lên: 22/07/2014, 11:20

... 16,000 2 =− 25 −1 f (−1) = (−1) (5 1 ) = = − 5 f(0) = (0) (50 ) = (0)(1) = f (2) = (2) ( 52 ) = (2) ( 25 ) = 50 The range of f(x) = y x x = x y4 y x = x2 y2 x is the set { − 25 , − , 5 x 0, 50 } Only ... a0 = [a ≠ 0] Example: (23 )2 · 4–3 = (A) 16 (B) (C) (D) (E) Solution: The correct answer is (B) (23 )2 · 4–3 = 2( 2)(3) · = 26 = 26 = 4 26 www.petersons.com 25 1 25 2 Chapter...

Ngày tải lên: 22/07/2014, 11:20

... = 43 = 64 22 (C) V = πr2h = · 49 · 10 = 1 540 cubic inches Divide by 23 1 to find gallons (B) V = πr2h = 22 · · 14 = 396 cubic inches Divide by to find minutes (B) V = l · w · h = 10 · · = 320 ... = = 64 cubic inches Therefore it will require cubes (A) Change 16 inches to V=6·5·1 feet = 40 cubic feet when full · 40 = 25 www.petersons.com 25 0 125 = 128 64 The linear ratio is then...

Ngày tải lên: 22/07/2014, 11:20

... points = ( x2 − x1 )2 + ( y2 - y1 )2 The distance between ( 3, 2) and (5, –1) is  3 −  +  - ( -1)  =     2 (-8 )2 + (3 )2 = 64 + = 73 B The midpoint of a line segment =  x1 + x y1 + y2   ... inches and its height is 14 inches? 22 (Use π = ) (A) (B) (C) (D) (E) 25 40 480 768 30 0 (A) 14 (B) (C) 44 30 (D) 27 (E) 35 www.petersons.com 21 9 22 0 Chapter 13 10 SIMILAR...

Ngày tải lên: 22/07/2014, 11:20

... 12 % of Sugar = 20 120 0 = ( 60 + x ) x+4 = 2x + 8 x + 32 = 10 x + 20 12 = x x=6 No of Quarts 60 x 60 + x (B) No of Pounds 24 0 x 24 0 – x · % of Alcohol = Amount of Sugar 720 5 (24 0 – x ) Notice ... 3.5x + 3.5(x + 6) = 28 7 = 6–x D 4x 2( 6 – x ) x = (6 − x ) Multiply by 10 to eliminate decimals x = 12 − x x = 12 35 x + 35 ( x + ) = 28 70 x =2 35 x + 35 x + 21 0 = 28 70 70 x =...

Ngày tải lên: 22/07/2014, 11:20

... squares is 12 0 ? (A) (n + 1 )2 – n2 = 12 0 (B) n2 – (n + 1 )2 = 12 0 (C) n2 – (n + 2) 2 = 12 0 (D) (n + 2) 2 – n2 = 12 0 (E) [(n + 2) – n ]2 = 12 0 If 2x – is an odd integer, find the next even integer (A) 2x – ... the original fraction Find the 10 (A) (B) (C) (D) (E) 10 12 14 16 original fraction (A) (B) (C) (D) (E) 10 15 12 20 15 25 www.petersons.com 17 9 18 0 Chapter...

Ngày tải lên: 22/07/2014, 11:20

... (C) 13 6 2 18 0 and 20 is 16 0 10 16 5 16 11 5 5 The product of a x and x x is (A) (B) (C) (D) (E) (D) (E) The square root of 213 .16 is exactly (A) 14 .2 (B) 14 .3 (C) 14 .8 (D) 14 .9 (E) 14 .6 The number ... www.petersons.com 14 9 15 0 Chapter 10 Exercise Work out each problem Circle the letter that appears before your answer The square root of 17 ,6 89 is exactly (A) (B...

Ngày tải lên: 22/07/2014, 11:20

... square root of 13 9.24 is exactly (A) 1. 18 (B) 11 .8 (C) 11 8 (D) 11 8 (E) 11 80 Find 5 10 9x and 4x is x (A) 36 x 36x 6x 6x2 (B) (C) = 16 , then x equals x (A) (B) (C) (D) (E) 13 2 13 3 13 4 13 5 13 7 45 is ... – 4y = 13 y = 13 y =1 (A) Multiply first equation by 3, second by 2, then add 9x + 6y = 15 a + 3b 8x – 6y = 2a + 14 b 17 x = 17 a + 17 b x=a+b 2x = 80 x...

Ngày tải lên: 22/07/2014, 11:20

... class, girls weigh 12 0 pounds each, girls weigh 12 5 pounds each, and 10 girls weigh 11 6 pounds each What is the average weight of these girls? (A) 12 0 (B) 11 8 (C) 12 1 (D) 12 2 (E) 11 9 In driving from ... 81 is below So far, there are 16 ° above and 9° below Therefore, the missing term is 7 below the average, or 77 ° which is 57 .1 to the nearest tenth (B) (15 , 000 ) = 7...

Ngày tải lên: 22/07/2014, 11:20

... clear $60 + $12 or $72 $72 will be 90% of the marked price 72 = 90x 720 = 9x x = $80 www.petersons.com 99 10 0 Chapter Exercise Retest 1 (A) $12 1 is 11 0% of the cost 12 1 = 1. 10x 12 10 = 11 x x = $11 0 ... the ticket to Judy for $10 , which was a loss of 16 % What was the original price of the ticket? (A) (B) (C) (D) (E) $8.33 $ 16 .66 $12 $11 .66 $15 Alice bought a bicycle for $1...

Ngày tải lên: 22/07/2014, 11:20

... · = 18 (B) (A) (C) 13 7 .5% = 1. 3 75 12 0 = = 13 3 % 90 50 0 = 2x 250 = x Retest 25 25 1 Exercise 4 (C) = ⋅ 10 0 = 5% 80 20 (B) of =3 of 60 = 15 = = 20% 15 (C) 25% = 10 0 = 10 , 000 = 400 (D) % = 75% = ... Example: Find 17 5% of 60 Proportion Method Decimal Method Fraction Method 60 17 5 x = 10 0 60 10 0 x = 10 50 0 x = 10 5 × 1. 75 300 4200 6000 10 5. 00 ⋅ 6...

Ngày tải lên: 22/07/2014, 11:20