Questions on Algebra: Divisibility and Prime Numbers answered by real tutors!

Tutors Answer Your Questions about Divisibility and Prime Numbers (FREE)

Question 93077: a number under 100 and above 1 that has only 5 factors
Click here to see answer by Edwin McCravy(8914)

Question 93626: what is divisible to 3 and 4
Click here to see answer by bucky(2189)

Question 93812: what are the prime factorization of 61?
Click here to see answer by stanbon(57410)

Question 93812: what are the prime factorization of 61?
Click here to see answer by checkley75(3666)

Question 93825: The LCM of 2 consecutive numbers is greater than 200 and is a multiple of seven. Name the numbers.
Click here to see answer by stanbon(57410)

Question 93870: How do you find the answer to this math problem? 3 1/3 divided by ? = -8
Click here to see answer by funmath(2925)

Question 93870: How do you find the answer to this math problem? 3 1/3 divided by ? = -8
Click here to see answer by stanbon(57410)

Question 93870: How do you find the answer to this math problem? 3 1/3 divided by ? = -8
Click here to see answer by checkley75(3666)

Question 94958: tell me the first 100 prime numbers
Click here to see answer by kiljoy(51)

Question 94958: tell me the first 100 prime numbers
Click here to see answer by bucky(2189)

Question 95663: When using prime factorization method for finding the least common multiples, why are only certain prime number used instead of all prime numbers? How will I know what prime numbers to use?
6= 2.3
8= 2.2.2=2
LCM=2.2.2.3=24
What tells me to only use three of the four 2s?
Click here to see answer by stanbon(57410)

Question 82079: (4n/3n)+(2/n+1)+(2/n^2+n)...I need that to be completly simplified.
Thanks
Click here to see answer by edjones(7569)

Question 96502: Can you name me all prime numbers under 200!
Thankyou very much
Click here to see answer by jim_thompson5910(28598)

Question 97222: Evaluate the expression.
8(17 - 6.2)
Click here to see answer by miwarto(1)

Question 97567: iam less then 100 iam a multiple of 9 iam a multiple of 6 iam a square number what number fits all these clues
Click here to see answer by checkley71(8403)

Question 97640: WHAT ARE THE FACTORS OF 48
Click here to see answer by checkley71(8403)

Question 97845: Can you take me step by step in helping me with the prime factorization for the numbers 34, 37, 67, 123, and 71? I would love to learn how to do theses so that I may understand when testing time comes around.
Thank you.
Click here to see answer by coyote(32)

Question 97923: Prove that n^3 + (n+1)^3 + (n+2)^3 is divisible by 9 for all n in Natural numbers. I have tried, let mathematical induction, let P(n) be the statement, then then n^9 - n is divisible by 9. I'm stuck...
Thanks
Click here to see answer by aaaaaaaa(138)

Question 98045: Rewrite the numbers as products of their greatest common factor.
14, 10
Click here to see answer by stanbon(57410)

Question 98773: When a positive integer "k" is divided by 6, the remainder is 1. What is the remainder when 5k is divided by 3?
thank you very much
Click here to see answer by scott8148(6628)

Question 98948: can the sum of two prime mubers be a prime number?
Click here to see answer by jim_thompson5910(28598)

Question 100333: What is the least number divisible by four prime numbers?
Click here to see answer by checkley71(8403)

Question 103157: "With the exception of 2 and 3, every prime number is a multiple of 6, add or take away 1. Is this true?"

Click here to see answer by MathLover1(6641)

Question 103551: Ok, I'm stumped. Divide the rational expressions.
x^4-x^3+x^2+x / x^3-4x^2+x-4 (these are the numerators)
2x^3+2x^2+x+1 / 2x^3-8x^2+x-4 (these are the denominators)
Here's what I have.
X(x^3-x^2+x)* 2x^2(x-4)+(x-4) nuerators
2x^2(x+1)(x+1) * x^2 (x-4)(x-4) denominators
now I'm stumped on factoring the first numerator
Click here to see answer by jim_thompson5910(28598)

Question 105219: factor 126 into prime numbers
Click here to see answer by jim_thompson5910(28598)

Question 105669: 2nd question is same as 1st, factor tree. How do I do and what is the prime factorization of the number.
90
5 x _
_ x _ x 2
_ x _ x _ x _
Click here to see answer by elima(1433)

Question 105665: Write the factors for each of the following numbers. 48, 72, 93 and 126.
Click here to see answer by elima(1433)

Question 105805: How do you figure out the prime factorization of a number and what exactly does that mean. These are the numbers I need to find the prime factorization of.
16, 35, 50, 144, 136, 90, 320.
Click here to see answer by stanbon(57410)

Question 105804: I don't know how to do this question.
Factor the monomial of the following.
8a2b,30x2y2, 45m3n2,84b2c3d.
The 2's and 3's are to the power, but I don't know how to display that on the computer. I don't know what monomial is, either.
Click here to see answer by checkley75(3666)

Question 106219: What is the smallest number that is divisible by each of the numbers 1 through 10?
Click here to see answer by HyperBrain(694)

Question 106220: What is the smallest number that is divisible by each of the numbers 1 through 10?
Click here to see answer by Fombitz(13828)

Question 106511: What is the prime factorization of 93?
Click here to see answer by edjones(7569)

Question 106682: primefactorization of the number 20
Click here to see answer by jim_thompson5910(28598)

Question 108477: Here is the problem that i CANNOT figure out :-(
Word problem:
Recently a very wealthy individual died and left a large amount of money to be distributed to two individuals. The problem was that this person did not tell anyone who these two people were. This rather cryptic message was left to help someone solve the mystery.
Social security numbers have 9 digits. Assuming there is a unique social security number for each person find the number that contains no 0's and the first number is divisible by 1, the first two numbers are divisible by 2, the first 3 numbers are divisible by 3 and so on - the entire number would then be divisible by 9. No digit is used twice.
There are two hints: The fifth number is a 5, AND there are no 0's.
Can you PLEASE help me?!
Thanks soooooo much, Samuel Urschel
Click here to see answer by ankor@dixie-net.com(15661)

Question 110303: use the distributiveproperty to removethe parentheses in the expression. Simplify by combining like terms. 7(4w-3)-25w
Click here to see answer by praseenakos@yahoo.com(507)

Question 105666: write the prime factorization of each of the following numbers. 16, 35, 50 and 144.
Click here to see answer by wgunther(43)

Question 111106: Will someone please help me solve this problem? The problem states to multiply or divide and simplify: 2x^2+x-3/2x^2+5x+2/3x^2+4-4/3x^2+10x+8
Click here to see answer by MathLover1(6641)

Question 112732: Find the two factors of 15 with a difference of 2
Click here to see answer by solver91311(16897)

Question 112732: Find the two factors of 15 with a difference of 2
Click here to see answer by SHUgrad05(58)

Question 105667: I don't understand how to complete a factor tree. Directions are to complete factor tree, then write the prime factorization of the number.
136
_ x 4
_ x _ x _ x _
Click here to see answer by heidi(17)

Question 114689: How do you find the LCM of a number?Can you please give me a couple of examples to study also.THANKS
Click here to see answer by chitra(359)

Question 115109: what is the multiples of 157
Click here to see answer by jim_thompson5910(28598)

Question 115654: I need help with these math problems on least common multiple.

20. 16,18
23. 4,17
26. 15,18
27. 12,14
28. 7,13
32. 3,5,12
33. 6,16,24
34. 12,18,24
Click here to see answer by jim_thompson5910(28598)

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