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

Tutors Answer Your Questions about real-numbers (FREE)

Question 48021: Solve for x Square root [x-1] =x-7
Click here to see answer by Earlsdon(6287)

Question 48054: determine the numbers for which the following expression is undefined x+2/X^2-49
Click here to see answer by stanbon(57250)

Question 48107: classify the given numbers as real and rational, real and irrational, or complex.
(80)1/5
16)1/4
1/9
π
i2

Click here to see answer by tutorcecilia(2152)

Question 48333: My problem is this:
Given the numbers 4, -7, 3/4, pie, -0.2, list those that are rational. I'm assuming they are all rational except for pie. As 4 can be written as 4/1 etc.
thanks.
Click here to see answer by tutorcecilia(2152)

Question 48319: In ratios, how would you represent the following:
4 minutes to 1 hour
and
125 hits to 500 times at bat
Click here to see answer by venugopalramana(3286)

Question 48319: In ratios, how would you represent the following:
4 minutes to 1 hour
and
125 hits to 500 times at bat
Click here to see answer by stanbon(57250)

Question 48490: 4x^2-4x+1=0 I need to calculate the discriminant and how many real solution it has.
Click here to see answer by atif.muhammad(135)

Question 48489: 4x^2-6x=4 My question is to calculate the discriminant and state how many real solutions it has.
Click here to see answer by josmiceli(9661)

Question 48581: use the discriminant to determine the number of solutions of the quadratic equation, and whether the solutions are real or complex. Note: It is not necessary to find the roots; just determine the number and types of solutions.
2x^2 + x - 1 = 0
4/3x^2 - 2x + 3/4 = 0
2x^2 + 5x + 5 = 0
3z^2 + z - 1 = 0
m^2 + m + 1 = 0

Click here to see answer by stanbon(57250)

Question 48773: use the discriminant to determine the number of solutions of the quadratic equation, and whether the solutions are real or complex. Note: It is not necessary to find the roots; just determine the number and types of solutions.
m^2 + m + 1 = 0
Click here to see answer by Nate(3500)

Question 48772: use the discriminant to determine the number of solutions of the quadratic equation, and whether the solutions are real or complex. Note: It is not necessary to find the roots; just determine the number and types of solutions.
3z^2 + z - 1 = 0
Click here to see answer by Nate(3500)

Question 48771: use the discriminant to determine the number of solutions of the quadratic equation, and whether the solutions are real or complex. Note: It is not necessary to find the roots; just determine the number and types of solutions.
4/3x^2 - 2x + 3/4 = 0
and
2x^2 + 5x + 5 = 0
Click here to see answer by Nate(3500)

Question 48879: Solve for x, computing the answer to 4 significant digits
e^x=0.349
Click here to see answer by Born2TeachMath(20)

Question 49209: k-4
E (looks like a backwards E)(1/2)^k
k-1
Click here to see answer by jake_6233(74)

Question 49229: In a Series of Spring Training Games, the Yankees scored 35 runs. The Dodgers and Tigers, respectively, tallied half and a third as many as the Reds. The Reds' scores were as much below the Yankees' as the Dodgers' were above the Tigers'. How many runs did each team score?
Click here to see answer by mszlmb(115)

Question 49359: please help me simplify this expression 9-(3/4+2)*12+6/.5*3
Click here to see answer by checkley71(8403)

Question 49527: what is a number?
Click here to see answer by checkley71(8403)

Question 49752: 1.Integer(Z) What does (z)means? 2.Rational(Q)What does (Q)maens?
Click here to see answer by longjonsilver(2297)

Question 49808:
Click here to see answer by gsmani_iyer(180)

Question 49961: need to know how to write words for these numbers
517236428
90807060
32000000652
3250009111
6040000
99019900
whatis standard notation
(3x100,000+(4x1000)+(2x10)
help please

Click here to see answer by stanbon(57250)

Question 49994: I need help with;
-3.2+(-4.6)+5.4
Click here to see answer by alka(15)

Question 49993: (37+(-7))+[1+(-1)]=
Click here to see answer by alka(15)

Question 50058: How do I solve s/3 = 8?
Click here to see answer by tutorcecilia(2152)

Question 50174: is every rational number a real number?
Click here to see answer by junior403(76)

Question 50244: The textbook tells me to use inequality notation to describe the subset of real numbers.
The price P of unleaded gasoline is not expected to go below $1.30 per gallon during the coming year.
How do you solve this problem?
Click here to see answer by stanbon(57250)

Question 50202: -2b over 7 divided by 7 over 9
Click here to see answer by tutorcecilia(2152)

Question 50254: How can I solve this problem?
4c+3(2+c)=4c+6+3c
=4c+3c+6

Click here to see answer by AnlytcPhil(1276)

Question 50386: What are the steps to solving -2+[(8-11)-(-2-9)]
Click here to see answer by piglet162431(90)

Question 50296: could you explain the difference between rational, irrational, integers, and real numbers..... i'm soooo confused.
Click here to see answer by rapaljer(4667)

Question 50541: How do I put -3-8 on a number line?
Click here to see answer by Nate(3500)

Question 50547: What is 9/7 + (-2 3/14)? I tried to work it out and I got -2 6/5. Then, I thought the answer was -2 6/7. I don't how to work out this equation. Can you break it down for me step by step?
Click here to see answer by checkley71(8403)

Question 50832: -d:d=7
Click here to see answer by darq(90)

Question 50947: find the discriminant , and determine the number of real solutions. Then solve 3x^2+2x-6=0
Click here to see answer by AnlytcPhil(1276)

Question 50989: what is 8u=3u+35?
Click here to see answer by junior403(76)

Question 50995: I don't understand the difference between all the properties and how they work. like "every whole number is an integer, true or false, and like, every rational nimber is a integer, true or false," stuff like that.
Click here to see answer by darq(90)

Question 51255: its a continued fraction problem, i have to write it in p/q form, reduced to the lowest term and i have never done this type of problem before
Click here to see answer by THANApHD(104)

Question 51918: 6+{-4}
Click here to see answer by checkley71(8403)

Question 52036: what set of numbers do:
pi
0
-35
-31.8
belong to a piece?
Click here to see answer by AnlytcPhil(1276)

Question 52101: (-5/8p)(-24) simplify expression.
Please help me solve this expression.
Click here to see answer by checkley71(8403)

Question 52128: (-3)(-y)
Click here to see answer by checkley71(8403)

Question 52479: If x is the sum of all prime factors of 38 , and if y is the sum of all prime factors of 84 , what is the value of x-y?
Click here to see answer by checkley71(8403)

Question 52486: If x the sum of all prime factors of 38, and if y is the of all prime factors of 84, what is the value of x-y?
Answer is 9.How?
Click here to see answer by checkley71(8403)

Question 52531: If x is the sum of all prime factors of 38, and if y is the sum of all prime factors of 84, what is the value of x-y? Please explain prime factors.
Click here to see answer by Earlsdon(6287)

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