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

Tutors Answer Your Questions about real-numbers (FREE)

Question 950350: Mary can jog, on average, 2 miles per hour faster than her husband, James. James can jog 6.6 miles in the same amount of time it takes mary to jog 9 miles. Mary can jog____ miles per hour?
Click here to see answer by macston(5194)

Question 950581: Simplify.
sqrt m^2-12m+36
This is the only one I'm having trouble with, and I'd like to know how to do this.
Click here to see answer by josmiceli(19441)

Question 951891: evaluate -{-n} if n=-10
Click here to see answer by MathLover1(20849)

Question 952448: A square tabletop has an area of 1640 in2.

To the nearest tenth, what is the length of 1 side of the tabletop
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Question 953145: what is the smallest integer value of k that makes the solutions of 3x^2-7x+k=0 imaginary?
Click here to see answer by MathLover1(20849)

Question 953973: Round the square roots to the nearest hundredth.
1.) sqrt of 320
2.) sqrt of 168
Click here to see answer by Alan3354(69443)

Question 953972: Approximate each square root to the nearest hundredth.
1.) A baseball diamond is a square 90 on a side. What is the length from first base to third base?
2.) The base of an isosceles triangle is 18 cm long. The equal sides are each 24 cm long. Find the altitude.
I need help with these. It would be very greatly appreciated if you could show me some steps.
Click here to see answer by macston(5194)

Question 911027: how would I write:
all real numbers N that are at most -3 or at least 5

Click here to see answer by EdenWolf(517)

Question 954554: -20
this number is an integer & is rational, but is it a whole number or a natural number ?
Click here to see answer by EdenWolf(517)

Question 954554: -20
this number is an integer & is rational, but is it a whole number or a natural number ?
Click here to see answer by addingup(3677)

Question 918681: 1. positive 6 minus -3 =
2. what number is in the tenths place - 7.2431

Click here to see answer by EdenWolf(517)

Question 900074: -0.9 + 3.2
Click here to see answer by EdenWolf(517)

Question 900428: The number -4 does not belong to which set of numbers?
rational numbers
integers
real numbers
whole numbers
Click here to see answer by EdenWolf(517)

Question 900056: name the set or sets of numbers on a numbers to which each real number bleongs
question 1) negative square root of 64
question 2) 8/3
question 3) square root 28
question 4) 56/7
question 5) negative square root of 22
question 6) 36/6

Click here to see answer by EdenWolf(517)

Question 925148: all real numbers (n) that are at most 3 or at least -5
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Question 898247: Distinguish the number with as many classifications that apply to each
10
3.14
-4
1/3
0
Click here to see answer by EdenWolf(517)

Question 896048: Okay, so, i have been struggling with what categories numbers fit into and right now i have a question on my honors algebra homework: "name all the categories -3 fits into." and i need to name if its irrational, an integer, etc. Thank you!!! :)
Click here to see answer by EdenWolf(517)

Question 897366: 5 more than square of the smaller integer
Click here to see answer by EdenWolf(517)

Question 916992: 7 _ 5 _ HINT: Need those two blank spaces with numbers ?

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Question 893894: 1. Show that the set of real numbers is dense
2. Show that the set of odd positive integers is a countable set
3. Let R be the relation on the set of real numbers such that a R b(a is related to b)if and only if a-b is an integer. Is R an equivalence relation
Click here to see answer by EdenWolf(517)

Question 909587: Name all sets of the # to what each real # belongs :
2/3
7.2
Click here to see answer by EdenWolf(517)

Question 893553: Name the sets of numbers to which each real number belongs

Click here to see answer by EdenWolf(517)

Question 923229: Hello,
I'm Hannnah. I think it's so sweet that you guys do this. So, here's my problem: I'm homeschooled and I'm suppossed to be in 8th grade. But I don't know anything about that level of math.There's so many questions that I have to ask. (By the way if you know of a way I could ask questions about other subjects that would be great.) But I know I can only ask one per email... So! How do you figure out whether or not a number/problem is rational or irrantional?
Click here to see answer by EdenWolf(517)

Question 955100: how can you express 0.8 as a fraction?

Click here to see answer by EdenWolf(517)

Question 955755: what does this mean (1*.01)^36 = 1E-72
Click here to see answer by Alan3354(69443)

Question 955755: what does this mean (1*.01)^36 = 1E-72
Click here to see answer by Theo(13342)

Question 955920: Determine the domain of the function. Express your answer in interval notation
f(x)= square root with a index of 4(x-8) inside the square root.
Sorry I don't know how to write the a square root with a index on the computer.
Click here to see answer by stanbon(75887)

Question 957781: For f(x) = SqRt(x^3 + 1) find f(-2)
Click here to see answer by jsmallt9(3758)

Question 958188: classify the integer or rational number with justification
1) 4/5
2)0
3)49/7
Click here to see answer by Fombitz(32388)

Question 958238: The value of c is the value of
a2 + b2 when a = 2 and b = −2.
Find the value of c2 − 7.
Click here to see answer by MathLover1(20849)

Question 959352: What is 1.21 repeating as a fraction
Click here to see answer by MathLover1(20849)

Question 959352: What is 1.21 repeating as a fraction
Click here to see answer by MathTherapy(10549)

Question 960672: The sum of the reciprocals of two consecutive positive number is 17/72. Find the number.
Click here to see answer by josgarithmetic(39613)

Question 960759: a girl makes a rectangle with a perimeter of 54cm the length is twice the width calculate the area of her rectangle

Click here to see answer by macston(5194)

Question 961148: Is 1/8 irrational or ratioal
Click here to see answer by EdenWolf(517)

Question 961244: When dealing with imaginary numbers, how do you simplify?
I^12
I know the answer is 1 but how do I get the answer with remembering the cycle?
Click here to see answer by Alan3354(69443)

Question 961748: 0.0432139183 it is what type of number
Click here to see answer by MathLover1(20849)

Question 961756: what is 6/6 minus 4/6
Click here to see answer by EdenWolf(517)

Question 961985: If x is an integer such that x^2-3x<4, then the no. Of possible values of x is plz describe that ans.
Click here to see answer by Theo(13342)

Question 962769: Whats the easiest way to tell rational numbers from irrational numbers?

Click here to see answer by josgarithmetic(39613)

Question 963512: How many real numbers does the quadratic equation have 2x^2+7x+9=I
Note use formula x=-b+/- square root b^2-4ac/2a
Click here to see answer by MathLover1(20849)

Question 964064: x^4 +y^4 =
Where x+y = a and xy = b
Click here to see answer by Fombitz(32388)

Question 964228: Is 1/8 a rational or irrational number ?

Click here to see answer by addingup(3677)

Question 914090: {x|x<3}
Click here to see answer by EdenWolf(517)

Question 940827: (7*5)-2
(5y4)
Click here to see answer by EdenWolf(517)

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