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

Tutors Answer Your Questions about real-numbers (FREE)

Question 607126: The question is how do I find (in interval notation) the values of x for which this expressio is real.
Squareroote of (15-5x).
The anwswer seems to be any number beyond 3 will produce a real number. so the answer should be (3, infinity) correct?
Click here to see answer by LisaJ(11)

Question 607819: Please help me find all real zeros for these function
f(x)= 2x^4-x^3-x^2-x-1
f(x)= 3x^4+11x^3+11x^2+x-2
f(x)= 2x^5+x^4+32x-16
f(x)= 3x^5+x^4-243x-81
Click here to see answer by lynnlo(4176)

Question 608345: Do 1/4 belongs to Irrational or Rational
Click here to see answer by Nerd helper (4)

Question 608345: Do 1/4 belongs to Irrational or Rational
Click here to see answer by richard1234(7193)

Question 608790: State whether the following is true sometimes, always, or never.
If an equation includes a variable that is squared,
then it will have at least 2 solutions.

Click here to see answer by Alan3354(69443)

Question 609017: Name the set of 6 consecutive odd integers beginning with -7
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Question 610024: Find three consecutive even integers such that 4 times the first is 12 more than twice the third.
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Question 610318: what line is described by the ordered pairs (x,y) such that y=o and x= all real numbers
Click here to see answer by jim_thompson5910(35256)

Question 610318: what line is described by the ordered pairs (x,y) such that y=o and x= all real numbers
Click here to see answer by josmiceli(19441)

Question 610317: what line is described by the ordered pairs (x,y) such that y=o and x= all real numbers
Click here to see answer by Alan3354(69443)

Question 610441: WHAT IS (W+5)+W+(W+5)+w=82 ????????????
PLEASE AWNSER
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Question 610752: Turn 80% into a fraction in it's lowest terms
Click here to see answer by richwmiller(17219)

Question 611428: Please help me solve these equations: sqrt( 28 ) sqrt( -9 ) sqrt( 56 ) sqrt( -14 ) sqrt( 36 ) sqrt( 99 ) sqrt( -73 ) sqrt( 196 ) sqrt( 77 ) sqrt( -100 ) sqrt( 88 ) sqrt( -46 )
Click here to see answer by Alan3354(69443)

Question 612574: If A={all numbers between -5.2 and 5.2, inclusive}, B={all primes}, and C={whole numbers}, then:
a) the intersection of sets A, B, and C contains how many numbers?
b) Graph the solution set
THANK YOU! :)
Click here to see answer by solver91311(24713)

Question 612652: is the square root of 42 rational or irrational numbers
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Question 613292: Find two consecutive integers whose product is 72?
Click here to see answer by nerdybill(7384)

Question 614020: three irrational numbers between 5/7and 9/11
Click here to see answer by edjones(8007)

Question 614012: write three irrational number between 5/7 and 9/11
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Question 615610: What is the answer to this problem?
5/7 divided by (-5/6)(-6/7/)
Click here to see answer by rfer(16322)

Question 615836: prove that every set is a subset of itself.
Click here to see answer by richard1234(7193)

Question 616539: how do you solve this problem
7/9x - 7/3x^2
Click here to see answer by lynnlo(4176)

Question 616539: how do you solve this problem
7/9x - 7/3x^2
Click here to see answer by Alan3354(69443)

Question 616502: what are the rules governing operation in real numbers?
Click here to see answer by ladyluck4772(11)

Question 616908: is 2.86 a rational number
Click here to see answer by stanbon(75887)

Question 616908: is 2.86 a rational number
Click here to see answer by ewatrrr(24785)

Question 616908: is 2.86 a rational number
Click here to see answer by EdwinParker(16)

Question 617360: 57 more than 4 times a number is the same as 6 less than 8 times a number
Click here to see answer by scott8148(6628)

Question 617659: The product of two consecutive positive odd integers is 9,603. What are the two integers?
Click here to see answer by Alan3354(69443)

Question 617599: what are the rules governing operations of real numbers?
Click here to see answer by richard1234(7193)

Question 618322: what are the problems involving real numbers?

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Question 618554: Trying to find the slope
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Question 618980: If one zero of polynomial 3x2=8x+2k+1 is seven times than the other, then find out the zeroes and values of k.

Click here to see answer by solver91311(24713)

Question 618978: Show that one and only one out of n, n+2 and n+4 is divisible by 3, where �n� is any positive integer.
Click here to see answer by ewatrrr(24785)

Question 618977: Prove that if �a� and �b� are odd positive integers, then a2+b2 is even but not divisible by 4.
Click here to see answer by richard1234(7193)

Question 618975: Show that one and only one out of n, n+2 and n+4 is divisible by 3, where �n� is any positive integer.
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Question 618981: If x+a is a factor of the polynomial x2+px+q, x2+mx+n. Prove that a= n-q/m-p.
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Question 620089: what is the set of counting number less than 10?
Click here to see answer by stanbon(75887)

Question 620088: what is the set of counring number less than 10?
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Question 620079: Evaluate for A = 5, B = -2, C = 4 and D = -6.

Click here to see answer by richard1234(7193)

Question 620766: Show that one and only one out of n, n+2, n+4 is divisible by 3, where n is any positive integer
Click here to see answer by ewatrrr(24785)

Question 620980: convert repeating decimals into a rational number. be sure to reduce answers.
0.888888888888
Click here to see answer by Alan3354(69443)

Question 620970: How many rational numbers are there between 0 and 1? Justify your answer.
Click here to see answer by solver91311(24713)

Question 621644: please help me simplify the expression √ (12-2√35)
Click here to see answer by lynnlo(4176)

Question 621658: what is real number?
what is complex number?
what is rational number?
what is irrational number?
what is whole number?
what is positive and negative numbers?
what is decimal numbers?
pls im hoping you can answer it im very slow about algebra thank you..
Click here to see answer by lynnlo(4176)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590