# Questions on Algebra: Real numbers, Irrational numbers, etc answered by real tutors!

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 Algebra: Real numbers, Irrational numbers, etc Solvers Lessons Answers archive Quiz In Depth

 Question 80928: Use elimination to solve each system of equations. -4x+2y=8 4x-3y=-10 Click here to see answer by checkley75(3666)

 Question 81183: Peter wants his math average to be above 85 for the year. If his average is for the first three quarters are 80,78, and 92, what must he score for the fourth quarter to achieve his goal? Click here to see answer by stanbon(57967)

 Question 81184: A bus travels 84 miles on 11 gallons of gas. About how many gallons will it need to travel 384 miles? Click here to see answer by Edwin McCravy(8999)

 Question 81180: Translate "one third of a number decreased by five is seventeen." Click here to see answer by tutor_paul(490)

 Question 81411: What's the difference between Real And irrational numbers and how can i tell the difference? Click here to see answer by stanbon(57967)

 Question 82356: Where did Real numbers originatedfrom? What is rational? What is the history of Real numbers? What is the Real number system? Problems associatiated with Real Numbers? Examples of the Real number system. Click here to see answer by stanbon(57967)

 Question 82559: I was able to solve the problem correctly (I think) but I am at a loss for the rest. I have absoluely no idea how to graph, get a graph or paste on on my work ( I have to do this online) Please help me. My assignment is due by midnight and I am freaking. I have not done so well so far and can not omit any of these questions. I am beginning to develop a serious math phobia (worse than ever)Thanks 1) For the equation , perform the following: a) Solve for all values of x that satisfies the equation. Answer: x=0 x=-1 Show work in this space x-√=0 (x)² = (√x)² x² - x = 0 x(x- 1) =0 x = 0 x =1 b) Graph the functions and on the same graph (by plotting points if necessary). Show the points of intersection of these two graphs. Graph c) How does the graph relate to part a? Answer: The graph relates to part a in that #2) 4) For the function, y= 1 ______ x-1 a) Give the y values for x = -1, 0, 1, 2, 3, 4 Answer: X Y Show work in this space. b) Using these points, draw a curve. Show graph here. 3) x -2 -1 0 1 2 y .25 .5 1 2 4 Given the table above, graph the function, identify the graph of the function (line, parabola, hyperbola, or exponential), explain your choice, and give the domain and range as shown in the graph, and also the domain and range of the entire function. Graph Graph Type Exponential ( I know this much, we've learned about mostly exponential graphs) Explanation This graph is an exponential graph because Domain The domain of this graph is Range The range of this graph is 4) Can you show me how to create an equation that is easier to solve as a rational exponent than a radical sign? (i responeded to the first bit about why it is easier but I need to prove what I am saying.) Again, the graph and the work. At a loss. This is not from a textbook so I have no isbn numbe nor title to give you. Sorry. Click here to see answer by stanbon(57967)

 Question 78983: are these correct? #10 convert 0.56 to a fraction and write your answer in lowest terms. my answer: (14)/(25) #11 evaluate: /-9/+ 5 + 2(-9) my answer: -22 #12 evaluate: -4^2-(5*4-15)+ 2^3 * 3 My answer: 23 #14 fIND THE PRIME FACTORIZATION OF 297 mY ANSWER: 3^3* 11 #16 Express (2)/(5) as a percent. My answer: 4% Click here to see answer by vertciel(183)

 Question 83372: How do I simplify? 5 (x^2-3) + x - x^2 + 5 -2(x^2-3) - 4x Thanks. Click here to see answer by chitra(359)

 Question 83453: Hello can you please help me classify the given numbers as real and rational, real and irrational, or complex as they are written below. a)(2)1/2 +2classify the given numbers as real and rational, real and irrational, or complex as they are written below. a)(2)1/2 +2 b)i c)0 d)3-(-5)1/2i e)(100)1/5 f)30007 g)(8)1/3 h)4+0i 2) think of any fundamental operation addition, subtraction, mulitplication, division, exponentation on a) irrational number, which results in -a rational number. an irrational number. 3)a complex number (a+bi, where a and b are real and b is not equal to zero) which results in a real number. a complex number (a+bi, where a and b are real) please help me solve these problems I would really appreciate it thank you. b)i c)0 d)3-(-5)1/2i e)(100)1/5 f)30007 g)(8)1/3 h)4+0i 2) think of any fundamental operation addition, subtraction, mulitplication, division, exponentation on a) irrational number, which results in -a rational number. an irrational number. 3)a complex number (a+bi, where a and b are real and b is not equal to zero) which results in a real number. a complex number (a+bi, where a and b are real) please help me solve these problems I would really appreciate it thank you. Click here to see answer by stanbon(57967)

 Question 83594: This is a rational expression, the answer should be in the form of a rational expression. Simplify: (x^2-13x+42)/ (x^2-36) Click here to see answer by gsmani_iyer(180)

 Question 83777: How do I solve and show a formal Check? 4(3x-1)= -28 Thanks Click here to see answer by checkley75(3666)

 Question 83779: How do I solve for X? (x+2)/3 - (x - 3)/2=5/6 Click here to see answer by lekelly(20)

 Question 83778: How do I solve? 7-2(3x - 1)=1 - 3(x-1) Thanks Click here to see answer by ptaylor(2052)

 Question 83958: Solve algebraically using only one variable. The perimeter, which is the sum of all sides, of a rectangle is 48 square inches. The length of the rectangle is three more than twice its width. Find the length and width of the rectangle Click here to see answer by checkley75(3666)

 Question 66943: The vertices of a right triangle are (6,5), (2,1), and (8,1). What are the coordinates of the midpoint of the hypotenuse? Answer Choices: A) (6,3) B) (4,3) C) (5,1) D) (8,3) Click here to see answer by vertciel(183)

 Question 84743: "Is the square root of 8 or 36 an irrational number?" Click here to see answer by Scriptor(36)

 Question 84740: "Is the square root of 8 a natural number?" Click here to see answer by uma(370)

 Question 84828: Which of these sets of numbers does 17.2353617 belong to? Natural numbers Whole numbers Integer Rational numbers Irrational numbers Real numbers Click here to see answer by rapaljer(4667)

 Question 85235: I have a question for you and I hope that you can help me out with it. The question is; When using the quadratic formula to solve a quadratic equation ax2 + bx + c = 0, the discriminant is b2 - 4ac. This discriminant can be positive, zero, or negative. (When the discriminant is negative, then we have the square root of a negative number. This is called an imaginary number, sqrt(-1) = i. ) * Explain what the value of the discriminant means to the graph of y = ax2 + bx + c. I am So lost on this, please help me out. Thank you! Chonda VanZant. Click here to see answer by stanbon(57967)

 Question 85342: Use the distributive property to remove the parentheses in each expression 7(4w - 3) – 25w Click here to see answer by checkley75(3666)

 Question 85353: Identify the property that is used 4 x (3 + 2) = (3 + 2) x 4 Click here to see answer by shaquanah(2)

 Question 85352: Identify the property that is used 5 + (6 + 7) = 5 + (7 + 6) Click here to see answer by shaquanah(2)

 Question 85360: I have a question that states: find the maximum revenue for the revenue function R(x)=490x-0.07x^2. How do I do this? Click here to see answer by Nate(3500)

 Question 85343: Complete the statement using the a)Distributive property b)Commutative property of addition c)Commutative property of multiplication 6 ∙ (5 + 4) = Click here to see answer by scianci(186)

 Question 85415: Multiplying and dividing terms simplify each of the following expressions where possible 6x^2y^3+9x^2y^3/3x^2y^2 Click here to see answer by stanbon(57967)

 Question 85441: 1. what are the axioms of real numbers? 2. give the definitions & examples? Click here to see answer by stanbon(57967)