Number operation review 9 docx

... 19 Therefore, the solution to the system of equations is y ϭ 4 and x ϭ 19. –ALGEBRA REVIEW 89  Sequences Involving Exponential Growth When analyzing a sequence, try to find the mathematical operation ... 14 c. 36 d. 49 e. 64 Answer d. To solve for d, isolate the variable: 6͙d ෆ Ϫ 10 ϭ 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 –ALGEBR...

Ngày tải lên: 07/08/2014, 22:20

... ϩ 9 The product of the last pair of terms equals 9. There are a few possibilities for these terms: 3 and 3 (because 3 ϫ 3 ϭ 9) , Ϫ3 and Ϫ3 (because Ϫ3 ϫϪ3 ϭ 9) , 9 and 1 (because 9 ϫ 1 ϭ 9) , 9 ... x 2 . x 1234567 1 2 3 4 5 –1 –2 –3 –1–2–3–4–5–6–7 –ALGEBRA REVIEW 82 Practice Question Which of the following are the factors of z 2 Ϫ 6z ϩ 9? a. (z ϩ 3)(z ϩ 3) b. (z ϩ 1)(z ϩ 9) c. (z...

Ngày tải lên: 07/08/2014, 22:20

... various operations with fractions. –NUMBERS AND OPERATIONS REVIEW 49 Odd and Even Numbers An even number is a number that can be divided by the number 2 to result in a whole number. Even numbers have ... 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 d...

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 ... than the number 1 is either prime or composite, but not both. ■ A prime number has only itself and the number 1 as factors: 2, 3, 5, 7, 11, 13, 17, 19, 23 . . . ■ A composite nu...

Ngày tải lên: 07/08/2014, 22:20

... numerators 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 ... larger number: 6. The answer is 4. 7 ϩϪ12 First subtract the absolute values of the numbers: |Ϫ12| Ϫ |7| ϭ 12 Ϫ...

Ngày tải lên: 07/08/2014, 22:20

... the numbers 3 and 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 ... converts to a number greater than 1, such as a whole number or a mixed number. 500% ϭ 5 275% ϭ 2.75 or 2 ᎏ 3 4 ᎏ Here are some conversions you should be familiar with: –NUMBERS AND OPER...

Ngày tải lên: 07/08/2014, 22:20

... true.  Matrices Matrices are rectangular arrays of numbers. Below is an example of a 2 by 2 matrix: Review the following basic rules for performing operations on 2 by 2 matrices. Addition Subtraction ... 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  –NUMBERS AND OPERATIONS REVIEW 66

Ngày tải lên: 07/08/2014, 22:20

... correct answer. 6 69 Example 7x Ϫ 11 ϭ 29 Ϫ 3x Move the variables to one side. 7x Ϫ 11 ϩ 3x ϭ 29 Ϫ 3x ϩ 3x Perform the same operation on both sides. 10x Ϫ 11 ϭ 29 Now move the numbers to the other ... solution for 7x Ϫ 11 ϭ 29 Ϫ 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 T...

Ngày tải lên: 07/08/2014, 22:20

... ϩ 9 The product of the last pair of terms equals 9. There are a few possibilities for these terms: 3 and 3 (because 3 ϫ 3 ϭ 9) , Ϫ3 and Ϫ3 (because Ϫ3 ϫϪ3 ϭ 9) , 9 and 1 (because 9 ϫ 1 ϭ 9) , 9 ... best simplifies ᎏ 5 8 x ᎏ Ϫ ᎏ 2 5 x ᎏ ? a. ᎏ 4 9 0 ᎏ b. ᎏ 4 9 0 x ᎏ c. ᎏ 5 x ᎏ d. ᎏ 4 3 0 x ᎏ e. x –ALGEBRA REVIEW 79 Now combine like terms: Ϫ14x Ϫ 9y ϩ 18z To multiply monomials, m...

Ngày tải lên: 07/08/2014, 22:20

... equaling different numbers. Therefore, we must choose the value of d that would make 15x ϩ dy identical to 15x ϩ 9 y.Ifd ϭ 9, then: 15x ϩ 9y ϭ 12 15x ϩ 9y ϭ 21 Thus, if d ϭ 9, there is no solution. ... ϭ 9x ϩ 3, which of the following is equal to f(4b)? a. 36b ϩ 12b b. 36b ϩ 12 c. 36b ϩ 3 d. ᎏ 4b 9 ϩ 3 ᎏ e. ᎏ 9 4 ϩ b 3 ᎏ Answer c. If f(x) ϭ 9x ϩ 3, then, for f(4b), 4b simply replaces...

Ngày tải lên: 07/08/2014, 22:20