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Basic Algebra

Algebra Word Problems

Jenny purchased a prepaid phone card for $20. The long distance calls cost 10 cents a minute using this card. Jenny used her card only once to make a long distance phone call. If her remaining credit on the card is $18.90. How many minutes did her call last?

Algebra Word Problems

A table and chairs cost $660 . The table costs $90 less than the chairs. What is the cost of the chairs?

Solving Inequalities

Solve the inequality for Z. 8z + 5 ≤ 7/3 z + 2 See attached file for full problem description.

Algebra Help

Solve by graphing. Indicate whether each system is independent, dependent or inconsistent. 1. y= 2x-1 x+y= 2 2. 2x-3y=12 3y-2x= -12 3. 3x-y=4 3x-y=0 Solve each system by the substitution method. Indicate whether each system is independent, dependent or inconsistent 4. x-y=3 3x-2y=3 5. 3y=x+5 3x-9y= -10 6

Algebra Questions

See attached file for full problem description. 1. Solve. 6x - 0.37 = 5(x - 0.28) 2. Identify the base in the statment "50% of 300 is 150." 3. Identify the rate in the statment " 260 is 52% of 500." 4. The length of one of the equal legs of an isosceles triangle is 8 cm less than 4 times the length of the base.

Induction proof

Need detailed instruction on how to work Use mathematical induction to prove that : 1*2+2*3+3*4+....+n(n+1)(n+2)/3 for all n >_1 and (2) Find d=gcd (721 , 448), find integers s and t with d=721s + 448t, and put the fraction 448/721 in lowest terms.


7. The point (1,0) lies in the region represented by the inequality x > y + 5. a. True b. False 8. The point (5,5) lies in the region represented by the inequality x > y a. True b. False 9. The system of inequalities |x + 3| < 2 has no solution a. True b. False 10. The system of linear inequalities |x

Lines, Slopes and Graphs

1. The slopes of the lines parallel to X axis and Y axis are a. 0 and inf b. inf and 0 c. 1 and -1 d. 0 and 0 2. The slope of the line parallel to the line y = 10x and passing through origin a. 10 b. (0, 10) c. 0 d. 1 3. The slope of the line perpendicular to x = 10 is a. 10 b. 0 c. 1 d. inf

Business Math: Which is the better method for calculating overtime?

(1) Sally worked 48 hours this week . Her overtime rate is 1.5 times the regular rate. When calculating gross pay with overtime, there are two options: Option 1. ( total regular hours X hourly rate ) + ( overtime hours X overtime rate ) = gross pay OR Option 2. ( total number of hours worked X the ho

Math Algebra Equations

I need to solve the following system of three equations and describe the methods used could you please assist and explain it in detail so I can apply it to the other problems. eq1: X + Y + Z = 6 eq2: 2X - Y + 3Z = 8 eq3: 3X - 2Y - Z = -17

Order and Number of Cyclic Subgroups

Please address the following question by answering the following: Suppose that G is a finite group of even order 2n. Prove or disprove that the number of cyclic subgroups of G is at most n + 2.

Important information About Solving Equations and Word Problems

7(3x+4) = 8(2x+5) + 13 2(x-3) - 3(x+5) = 3(x-2) - 7 3x - 5(3x-7) = 2(x+9) + 45 Geometry: The length of a rectangular playing field is 5 ft less than twice its width. If the perimeter of the playing field is 230 ft, find the length and width of the field. Science and medicine: A bicyclist rode into the country for 5

Distributive Properties

Use the Distributive Property to remove the parentheses from the following expression (-1-u+4z) (-2)

Important information about Capacitive Reactance

Capacitive reactance X_c in an electrical circuit to an alternating current is given by: (Please see attached) where f is frequency of the current and C is capacitance of the circuit. Solve for f.

Solving Inequalities

Solving a linear inequality: -7w - 12 &#8805; 2 See attached file for full problem description.


1.Graph x+4Y=5 2. Graph x-2y=6 3. How do I find the slope of the line with points (0,0) (2,4) 4. How do I find the slope of the line with points (-3,1) (2,-2) 5. How do I graph the line with points & slope (-2,5) slope -1 6. How do I draw l1 (L sub 1) through (-4,0) (0,6) What is the slope of any line paral

Rearranging Equations

Given ax + by + c = 0 Rewrite the equation with only y on the LHS. Also find the value of y for x=20, a=-1, b=5, c=0.