ALEKS Basic Math Placement Test Review (100% Accurate)

how to find domain with a given equation correct answers -if a fraction, set denom. to zero, then solve -in equation, plug in 0 for x *usually can be a + or - solution* (-) + (-)= ... (-) x (-)= ... (-) divided by a (-)= ... correct answers (-) (+) (+) quotient correct answers division adding and subtracting fractions correct answers -make denoms the same -add/subtract numerators multiplying fractions correct answers just multiply numerators across and denoms across and simplify dividing fraction correct answers multiply by reciprocal (change second fraction to reciprocal) multiplying/dividing/adding mixed fractions correct answers turn them into regular fractions (multiplying # by denom, adding it to num, keeping denom the same) and continue subtracting mixed fractions correct answers *first: make denoms the same* set up as if you're subtracting two large numbers (on top and on bottom) how to solve problems like 5-2 (1/3) correct answers 1) make problem 5- (2 (1/3)) 2) separate : 5- 2- (1/3) to get: 3- (1/3) 3) rewrite whole #: 2+1- (1/3) 4) rewrite as: 2 + (3/3) - (1/3) to ed up with: 2 (2/3) inequality problem rule (, , etc like problems) correct answers When *multiplying/dividing* each side by a *positive* number, the inequality sign *stays the same* When *multiplying/dividing* each side by a *negative* number, we *flip* the inequality sign. area and circumference of circle correct answers A= pi x r^2 C= 2 x pi x r area and perimeter of a triangle correct answers A= (1/2)bh (unit squared)