Number operation review 4 potx

... 5: ᎏ 3 ϩ 2 5 ᎏ ϭ ᎏ 8 2 ᎏ ϭ 4. The median is 4. sum of numbers in set ᎏᎏᎏ quantity of numbers in set –NUMBERS AND OPERATIONS REVIEW 60 The mode of a set of numbers is the number that occurs most ... 0.15, 1 .43 , 4} . Therefore, the union is {0, 0.01, 0.15, ᎏ 3 7 ᎏ , 0.93, 1 .43 , 4, 6.98, ᎏ 2 2 7 ᎏ }. Mean, Median, and Mode To find the average, or mean, of a set of numbers, add all o...

Ngày tải lên: 07/08/2014, 22:20

... 6.67 4. 80 5.79 8.82 6.32 0 .47 10 5.99 6.90 13.19 6 .44 6.99 6. 24 4.01 24 6. 94 6.98 0.57 6.33 8.79 6.97 0 .43 25 6 .45 6.86 5.98 6.91 6.66 6. 54 1.38 29 7.32 6.86 6.28 6.57 10.25 6.77 7.51 34 7.30 ... 7.30 6.73 7.81 5.90 19.18 5.77 20.96 35 7.18 6.72 6 .41 7.00 2.51 6.29 12 .40 38 6.58 6.80 3. 24 5.76 12 .46 5.58 15.20 40 6.16 6.73 8 .47 5.91 4. 06 6.51 5.38 Table A2. Th...

Ngày tải lên: 19/06/2014, 13:20

... in an odd number? a. even number ϩ even number b. odd number ϫ odd number c. odd number ϩ 1 d. odd number ϩ odd number e. ᎏ even n 2 umber ᎏ Answer b. a, c, and d definitely yield even numbers; ... a perfect square is a whole number; ͙72 ෆ ≈ 8 .48 5; ͙78 ෆ ≈ 8.832; ͙80 ෆ ≈ 8. 944 ; ͙88 ෆ ≈ 9.381; 81 is a per- fect square because ͙81 ෆ ϭ 9. –NUMBERS AND OPERATIONS REVIEW 44...

Ngày tải lên: 07/08/2014, 22:20

... because n > 2. –NUMBERS AND OPERATIONS REVIEW 50 Factors Factors of a number are whole numbers that, when divided into the original number, result in a quotient that is a whole number. Example The ... 5, 10, 15, 20, 25, 30, 35, 40 . . . Multiples of 8 include 8, 16, 24, 32, 40 , 48 , 56, 64 . . . The common multiples of two or more numbers are the multiples that the numbers have...

Ngày tải lên: 07/08/2014, 22:20

... only. Example ᎏ 4 9 ᎏ Ϫ ᎏ 1 6 ᎏ LCD is 54 because 9 ϫ 6 ϭ 54 and 6 ϫ 9 ϭ 54. ᎏ 4 9 ᎏ ϭ 4 ϫ ᎏ 6 9 ᎏ ϫ 6 ϭ ᎏ 2 5 4 4 ᎏ Convert fraction. ᎏ 1 6 ᎏ ϭ 1 ϫ ᎏ 9 6 ᎏ ϫ 9 ϭ ᎏ 5 9 4 ᎏ Convert fraction. ᎏ 2 5 4 4 ᎏ Ϫ ᎏ 5 9 4 ᎏ ϭ ᎏ 1 5 5 4 ᎏ ϭ ᎏ 1 5 8 ᎏ Subtract ... is 24 because 8 ϫ 3 ϭ 24 and 12 ϫ 2 ϭ 24. ᎏ 1 8 ᎏ ϭ 1 ϫ ᎏ 3 8 ᎏ ϫ 3 ϭ ᎏ 2 3 4 ᎏ Convert fraction. ᎏ 1 1 2 ᎏ ϭ 1 ϫ ᎏ 1...

Ngày tải lên: 07/08/2014, 22:20

... Multiplication k  a 1 a 2 a 3 a 4  =  ka 1 ka 2 ka 3 ka 4   a 1 a 2 a 3 a 4  ×  b 1 b 2 b 3 b 4  =  a 1 b 1 + a 2 b 3 a 1 b 2 + a 2 b 4 a 3 b 1 + a 4 b 3 a 3 b 2 + a 4 b 4   a 1 a 2 a 3 a 4  −  b 1 b 2 b 3 b 4  =  a 1 − b 1 a 2 − b 2 a 3 − b 3 a 4 − b 4   a 1 a 2 a 3 a 4  +  b 1 b 2 b 3 b 4  =  a 1 + ... b 4   a 1 a 2 a 3 a 4  +  b 1 b...

Ngày tải lên: 07/08/2014, 22:20

... 12 36x ϭ 72 x ϭ 2 Example ᎏ 4 x ᎏ ϭ ᎏ x ϩ 16 12 ᎏ Find cross products. 16x ϭ 4( x ϩ 12) 16x ϭ 4x ϩ 48 12x ϭ 48 x ϭ 4 Practice Question If ᎏ 9 y ᎏ ϭ ᎏ y 1 Ϫ 2 7 ᎏ , what is the value of y? a. Ϫ28 b. ... 3x is x ϭ 4. To check that the solution is correct, substitute 4 for x in the equation: 7x Ϫ 11 ϭ 29 Ϫ 3x 7 (4) Ϫ 11 ϭ 29 Ϫ 3 (4) 28 Ϫ 11 ϭ 29 Ϫ 12 17 ϭ 17 This equation checks, so...

Ngày tải lên: 07/08/2014, 22:20

... terms. Therefore, you can divide 64x 3 ϩ 24x by 8x to find the other factor. ᎏ 64x 3 8 ϩ x 24x ᎏ ϭ ᎏ 6 8 4 x x 3 ᎏ ϩ ᎏ 2 8 4 x x ᎏ ϭ 8x 2 ϩ 3 Thus, factoring 64x 3 ϩ 24x results in 8x(8x 2 ϩ 3). Practice ... solution to ᎏ 1 2 8 4 x x 8 3 y y 5 4 ᎏ ? a. ᎏ 4x 3 5 y ᎏ b. ᎏ 18 2 x 1 4 1 y 9 ᎏ c. 42 x 11 y 9 d. ᎏ 3x 4 5 y ᎏ e. ᎏ x 6 5 y ᎏ Answer d. To find the quotient: ᎏ 1 2 8 4 x x...

Ngày tải lên: 07/08/2014, 22:20

... equation is therefore y ϭ x 2 Ϫ 3. x y 12 345 6 1 2 3 4 5 –1 –2 –6 –5 4 –3 –1–2–3 4 5–6 x y 12 345 67 1 2 3 4 5 –1 –2 –3 –1–2–3 4 5–6–7 –ALGEBRA REVIEW 84 Answer b. To simplify the expression, first ... true: (x ϩ 4) (x Ϫ 2) ϭ 0 Using the zero-product rule, you know that either x ϩ 4 ϭ 0 or that x Ϫ 2 ϭ 0. So solve both of these possible equations: x ϩ 4 ϭ 0 x Ϫ 2 ϭ 0 x ϩ 4 Ϫ...

Ngày tải lên: 07/08/2014, 22:20

... 5: ᎏ 5 ͙ 5 c ෆ ᎏ ϭ ᎏ 2 5 0 ᎏ ͙c ෆ ϭ 4 Last, square both sides: (͙c ෆ ) 2 ϭ 4 2 c ϭ 16 Practice Question If 6͙d ෆ Ϫ 10 ϭ 32, what is the value of d? a. 7 b. 14 c. 36 d. 49 e. 64 Answer d. To solve for d, ... 32 6͙d ෆ Ϫ 10 ϩ 10 ϭ 32 ϩ 10 6͙d ෆ ϭ 42 ϭ ͙d ෆ ϭ 7 (͙d ෆ ) 2 ϭ 7 2 d ϭ 49 42 ᎏ 6 6͙d ෆ ᎏ 6 –ALGEBRA REVIEW 86 c ϩ 2d ϭ 13 c ϩ 2(11 Ϫ 2c) ϭ 13 c ϩ 22 Ϫ 4c ϭ 13 22 Ϫ 3c ϭ 13...

Ngày tải lên: 07/08/2014, 22:20