MATH 115N-01 β College Algebra
Find the value of each exponential expressions
(1)53
(2)(3/4)3
(3)Let set A={–5.3, –5, –1, –1/9,– βπ, 0, 0.πΜ
, 1.2, 3}. List all the elements of A
that belongs to each set.
Natural numbers :
Whole numbers:
Integers:
Rational numbers:
Irrational numbers:
Real numbers
Use real numbersβ properties to complete each statement
(4)–5(2x–5y+6z) = ________________
(5)6+(–1) = _____________________
(6)2Γ(79Γ5) = __________________
(7) 6x β 4(x+1) = 2x + 4
(8) T = 2ΟβπΏ/π, for g
Solve each problem
(9) The perimeter of a triangle is 28 ft. The medium side is 4 ft longer than the shortest side, while the longest side is twice as long as the shortest side. What are the lengths of the three sides?
Solve each inequality
(10) 2(x–5)+3x < 4(x–6)+1
(11) –7 < 3x –4 < 8
(12) Through (–3,4) and (2, –8)
(13) y β 2x +4 = 0
Write an equation for the line and give answers in slope–intercept form
(14) through (2,4), m=–1
(15) through (2,3) and (–1,2)
(16) through (3,–2), parallel to 2x–y=5
(17) through (3,–2), perpendicular to 2x–y=5