module 3- stats wgu exam questions and answers 100% pass

module 3- stats wgu exam questions and answers 100% pass elementary operations addition subtraction multiplication division constants a number with a fixed value all real numbers arithmetic expression a string of numbers connected by elementary operations 4 + 2 + 5 - 8 4,2,5,8= constants +, +, -= operations anything with a letter is not a constant variable X symbol that represents or holds the place of a numeric value coefficients a number by which a variable is being multiplied. they are written in FRONT 16x= 16 is the coefficient and x is the variable term can be many things can be a single constant (5) a single variable (x) can be any number of constants, variables, multpilication, exponents example- 15ab^2 15xy^2 is equal to 15 x X x y x y terms are seperated by separated by either addition, subtraction, or division operations x2 - 3x 2 terms alagebaric expression is a string of terms connected by division, addition, and subtraction. writing algebaric expressions write constants at the end of your expression 6x+11 y3−51 abc+5 x+8−−√ Write the terms with the largest exponents first in your expression. x3−8b2 Always write expressions in descending order of exponent value with constants at the end of the expression. Here are some examples: y3+4x−51 c2+abc+5 x3−x+8−−√ inverse operations two operations are considered this if they undo one another subtraction is the inverse of addition division is the inverse of multiplication the degree refers to the LARGEST EXPONENT 12= 0 DEGREE 7a= 1 DEGREE x ^2= 2 DEGREE Names of expressions based on their degree An expression of degree 0 is known as a constant* An expression of degree 1 is known as linear* An expression of degree 2 is known as quadratic* An expression of degree 3 is known as cubic an exponent of 0 means 1 7^0= 1 −5A+5A 0 combining terms in long expressions step 1. identify like terms 2. move the like terms next to one another 3. add of subtract coefficients