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October 25, 2014

Search: prime

Number of results: 1,137

Math
Plz help dont know how to do this question. Write number 68 as a product of prime factors. Try to do prime factorazation. start dividing by 2 68 34 2 17 2*2 Can you go any further? Are all these prime? prime factorization of 34 98
November 7, 2006 by Maya

Math(Please check answers)
Factor completely. If the polynomial cannot be factored say it is prime. 1) 15x^3 + 19x^2 + 6x A) (3x^2 +2)(5x+3) B) x(3x+2)(5x+3) C) x^2(3x+2)(5x+3) D) x(5x+2)(3x+3) E) Prime I chose E) Prime. 2) 2x^2 - 14x - 6x + 42 A) 2(x+7)(x+3) B) (x+7)(2x-6) C) 2(x-7)(x-3) D) (x-7)(x-3) ...
September 9, 2010 by Hannah

Factoring and Prime
I am still having troulbe with these. Her is another one I am stuck on. I think the prime is getting me. Factor completely or state that it is prime x^2 + 9xy + 16y^2 The factors of 16 are: 16 x 1. 8 x 2. 4 x 4. None of these add together to give 9 so it can't be factored as ...
June 13, 2006 by Bekki

Math
Which of the following is a prime #? a.2 b.19 c.37 d.51 e.67 I choose 2. But the book answer is 51. The book says:( 2,19,37, and 67 are prime #'s) 3x17=51, so it is not prime. I forgot what prime #'s mean that's why I choose anything like 2. help me. A prime number is a number...
August 9, 2007 by Mack

Math
What is a unit rate? what is the prime factorazation for 945? idk how to do this 10= 15= GCF= i need help with my prime factorization homework what is a prime factorazation i meed held on my homework how do u determine if the numbers are prime or composite
December 12, 2006 by Lindsey

College Math Probability
Let 1 <= k <= p−1, where p is prime. Show that p choose k is a multiple of p. What if p is not prime? I think here when we expand p choose k and then input few prime numbers then we always get a multiple of p . And same with when p is not prime.
October 7, 2012 by Genie_math

PROBLEM SOLVING IN MATHEMATICS
there are two prime numbers between 100 and 199 such that the ten digits is a prime number, the ones digit is a prime number and the tens and ones digits taken together are a 2 digit prime number. find the sum of these 2 prime number.
October 6, 2011 by alya

math
The Twin Prime Conjecture, which has not been proven, argues that there are infinitely many pairs of primes of the form n and n+2. Such a pair is called a prime pair. Some examples of prime pairs are 5 and 7, 17 and 19, and 29 and 31. How many prime pairs have both members ...
February 18, 2012 by Miep

math
The Florida Lottery is made up of the numbers 1-49. My mother has observed that the winning numbers many times are prime numbers. 1.List the prime numbers from 1-49: 2.What is the probability of a prime number being picked randomly from the numbers 1-49? 3.Is the probability ...
January 17, 2010 by Anonymous

math
The Florida Lottery is made up of the numbers 1-49. My mother has observed that the winning numbers many times are prime numbers. 1.List the prime numbers from 1-49: 2.What is the probability of a prime number being picked randomly from the numbers 1-49? 3.Is the probability ...
January 17, 2010 by Anonymous

math
is there a way to do this problem or do i have to just guess and check. because by guessing and checking, i can't find the right answer Name a function with the following characteristics: note: f prime means the first deriviative f is continuous over the reals, f(0)=0, F prime...
November 14, 2009 by sammy

math
is there a way to do this problem or do i have to just guess and check. because by guessing and checking, i can't find the right answer Name a function with the following characteristics: note: f prime means the first deriviative f is continuous over the reals, f(0)=0, F prime...
November 15, 2009 by sammy

Pre calc
Write the equation in standard ellipse form and graph. 34 x^2 -24xy +41y^2 +41 y^2 -25= 0. i got x= (4 x prime- 3 y prime)/5 and y=(3x prime +4y prime)/5 but cant get the correct math when I plug that into the original equation. Also I need help finding the equation for x^2 +...
May 5, 2013 by Rebekah

Math Prime Numbers
Grade 7 question: I am a two-digit prime number I am one less than a multiple of 10 If you add 30 to me you get another prime number Who am I _________?
September 8, 2008 by Elena

maths
4x+3y=21 What is your question? You have simply stated the equation of a straight line. what is a prime factorazation?> expressing a number in terms of its Prime factors eg. 126 = 2*3*3*7 all the factors are prime numbers How does this relate to the first problem you posted?
March 23, 2007 by abi

science
how is the equator similar to the prime meridian A. both the prime meridian and equator are lines that divide earth into norther and southern hemispheres B. both the prime meridian and equator are imaginary base lines from which locations of earth can be measured D. both the ...
May 14, 2014 by mary

MATH!
The sum of two prime numbers is the prime number 89,563. Find the smaller of the two addends. I attempted the problem but I'm not sure if it is right. 89,561 is a prime number and so is 2. So is the answer 2?
May 6, 2011 by Lee

math
The vertices of a rectangle are R(-5,-5), S(-1,-5), T(-1,1),and U(-5,1). After translation, R prime is the point (0,-13). Find the translation vector and coordinates of U prime. I got (5,-8) as my tanslatipn vector and (0,-7) as my U prime. Is this right?
November 24, 2007 by keisha

Math (Complex Numbers)
Let N be the sum of all prime powers that can be written as 4^n+n^4 for some positive integer n. What are the last 3 digits of N? Details and assumptions: A prime power is a number of the form pk, where p is a prime and k is a positive integer. Examples: 3,9,16.
May 9, 2013 by Mahler

IB HL Math
I need to that if there is better way to prove the following: I am trying to prove that x r = k and k is a multiple of x only when x is prime. I said that if x is non-prime, then: Let a = 6 Let r = 4 6! (6 Ė 4)! 4! = 3(2) x 5 x 4! (2!) 4! = 15 It is not divisible by 6 My ...
March 14, 2009 by Asad

math
the florida lottery is made up of the number 1-49. my mother observed that the winning numbers many times are prim numbers. a. list the prime numbers from 1-49 b. what is the probability of a prime number being picked randomly from the numbers 1-49? c. is the probability of ...
February 1, 2010 by ssmomo

Math
The number p is the product of three different positive prime numbers greater than 2.If the sum of these three prime number is also prime, what is the smallest possible value for p? Won't the 3 number be 3-5-11? Thanks
May 21, 2014 by Shadow

math
The vertices of a rectangle are R(-5,-5), S(-1,-5), T(-1,1), and U(-5,1). After translation, R prime is the point (0,-13). Find the translation vector and coordinates of U prime. I got (5,-8) as my translation vector and (0,-7) as U prime. Is this right?
November 23, 2007 by keisha

mathematics
Find the smallest prime number N such that the following is true: The largest prime factor of N−1 is A; The largest prime factor of A−1 is B; The largest prime factor of B−1 is 7.
April 21, 2013 by Sambaran G.

Math
Find the smallest prime number N such that the following is true: The largest prime factor of N−1 is A; The largest prime factor of A−1 is B; The largest prime factor of B−1 is 7.
April 25, 2013 by Zeneth

math
The number 5 is A) prime B) composite C) neither prime nor composite D) both prime and composite
August 27, 2014 by pietro

Math
What are 2 prime numbers between 100-199 such that the tens digit is a prime number, the ones digit is a prime number, and the tens and ones digit taken together are 2 digit prime number.
April 23, 2013 by Anonymous

math
What methods can you use to find prime numbers? How are prime numbers used in mathematics? How can you use prime factorization to find the GCF and LCM? Provide an example
June 18, 2009 by chandice

Math
Let n = c x p, where p is a prime number, and c is a composite number less than p. The number c has three unique prime factors. How many unique prime factor does n^2 have?
July 2, 2014 by Anne

Algebra Please check answers
Could you please check these answers thanks. Directions: Factor each polynomial. If the polynomial cannot be factored, write prime. 1. a^2-16b Answer: (a-16)(a+16) 2. m^2+8m+16 Answer: (m+8)^2 3. 3a^2b+6ab+9ab^2 Answer: Prime 4. 2r^2+3r+1 Answer: Prime 5. z3+6z^2+9z Answer: Prime
April 5, 2009 by Rae Rae

Math
All numbers in our real number system are the product of prime numbers. Complete the following steps for this discussion: 1. List the ages of two people in your life, one older than you and one younger than you. It would be best if the younger person was 15 years of age or ...
March 28, 2013 by Tammy

maths
my number is less than 100 one more than a multiple of 3 one of its digits is prime if you reverse its digits you get a prime it has exactly four factors the sum of digits is prime if you miltiply it by 5 it is greater than 100
February 19, 2014 by ashley

math/prime factorization
what is the prime factorazation for these numbers 36,180,525,165
September 16, 2008 by BLANCA

Math
Are these prime number correct all the way up to 50 (1,3,5,7,11,13,17,22,23,25,27,31,33,35,37,41,43,45,47 ) What kind of tens are prime
September 7, 2011 by JJ

math
What is the greatest prime number you must consider to test whether 5141 is prime?
July 20, 2009 by timothy

alegbra
factoring completely, state that the polynomials is prime. x^-16 (x+8)(x-8) not prime. x^-8x+12 x(8x+12) (4x+6) Check these problem me please
May 14, 2010 by Ashley

math
list all prime under 20. then find the GCF for 64 and 80 use prime factorization.
August 15, 2012 by kyle

math
WHAT IS THE PRIME FACTORIZATION OF 45? and what is the sum of the only two prime numbers that differ by one ? Thank you
July 8, 2013 by sam

math
Letís agree to say that a positive integer is prime-like if it is not divisible by 2, 3, or 5. How many prime-like positive integers are there less than 100? less than 1000? A positive integer is very prime-like if it is not divisible by any prime less than 15. How many very ...
April 1, 2010 by chicken

MATH
Letís agree to say that a positive integer is prime-like if it is not divisible by 2, 3, or 5. How many prime-like positive integers are there less than 100? less than 1000? A positive integer is very prime-like if it is not divisible by any prime less than 15. How many very ...
April 2, 2010 by David

Calculus
What is the largest two digit prime number whose digits are both prime numbers?
January 26, 2008 by Ashley

Math
Find all the two digit prime numbers neither of whose digits are prime.
March 14, 2011 by Diana

Math
Prime Factoization of 504. Prime Factorization of 1080.
February 19, 2008 by John

Math (Proof)
Prove that if ab = ac (mod n) and a is relatively prime to n, then b = c (mod n). Proof: a and n are relatively prime and from ab = ac(mod n), we have n|(ab-ac), so n|a(b-c). Since (a,n)=1 (relatively prime), we get n(b-c). hence b=c(mod n). But what if a and n are not ...
February 14, 2013 by Michael

math please
what exactly is a prime factor would x-5 x+5 and x2+25 all be prime factors of x4-625? Yes, I believe those would be the prime factors. x^4 - 625 can be factored into (x^2 -25)(x^2 + 25) and once again into (x-5)(x+5)(x^2 + 25) That is what you have done. Any additional ...
November 30, 2006 by anonymous

Algebra
When factoring an equation, how do I know if the result is prime? For example, I have a problem x^2 - 2x + 4 and I think it is prime because I can't solve it. Am I right?
April 1, 2013 by Mary

Algebra
Explain why x^2 +5x + 8 is prime(not factorable) How do you know? Give 2 examples of a prime polynomial(can't be both binomials) Give 2 examples of polynomials that are not prime(they can't be both binomials),factor them,explain what you did to factor them. How would you ...
July 6, 2010 by Jaz

Algebra
Explain why x^2 + 5x + 8 is prime (not factorable). How do you know? Give 2 examples of a prime polynomial (they cannot both be binomials). Give 2 examples of polynomials that are NOT prime (they cannot both be binomials), factor them, and explain what you did to factor them. ...
August 22, 2010 by John

Calculus
Let me try to ask this question a different way: 4x^2+2x+xy=12 and y(2)=-4 find y(prime)(2) by implicit differentiation. I can differentiate it to 8x+2+y+xy(prime)=0 I don't know what to do with the y(2)=-4 after this point.
February 25, 2010 by Elisabeth

Math
Greta said that the product of two prime numbers must also be a prime number. Joan disagreed. Who is correct?
December 6, 2011 by KC

math
Find all the two digit prime numbers neither of whose digits are prime. Someone helped me yesterday but I do not understand.
March 15, 2011 by Diana

geography
Okay, I have my Mom looking at this with me. From the information on the map it seems the answer is the Prime Meridian at 0 degrees longitude and its twin line of longitude opposite to the Prime Meridian at 80 degrees longitude. However, I told my Mom it is the Prime Meridian ...
October 30, 2011 by Reed

Math
A positive integer n is defined as a "prime interlude" if n-1 and n+1 are both prime numbers. Which of the following is not a "prime interlude?" a.4 b.18 c.30 d.72 e.90 ( First of all; What is a "prime interlude??") I don't understand the question and don't know which answer ...
August 9, 2007 by Mack

Math
) Form a conjunction from the following two statements and determine if the conjunction is true or false. Explain. Two is an even number. Two is a prime number. A) Two is an even number or two is a prime number.; False B) Two is an even number and two is a prime number.; True ...
October 20, 2009 by Anonymous

calculus
when finding the tangent line to the curve using T(t)= r(t)prime/ /r(t)prime/ and the eq. of the curve being r(t)= (e^t, te^t, te^(t^2)), at point (1,0,0) why does t=o. How is the parameter for t found or calculated?
December 13, 2008 by maria

Math
How many prime numbers are between 0-50? Prime Number= Only has factors of 1 and it's self. For example. 3, it has 3 and one for the factors.
January 26, 2009 by Liley

math
I have the same question as Sally: What is the prime factorization of 225? Or, just how do you find prime factorization??? Thanks.
June 16, 2009 by Tyler

arithmetic
USING PRIME FRACTORIZATION WHAT IS THE GCF FOR 45,100 USING A FACTOR TREE AND COMMON PRIME FACTORS
November 10, 2009 by Anonymous

math
Which numbers between 40 and 49 have 2 and 3 in their prime factorization?Use exponents to write the prime factorization of each number.
August 15, 2013 by Anonymous

math
Which number between 29 and 39 has three different prime factors?What is the prime factorization of this number?
August 14, 2013 by Anonymous

MATH
TWO INTEGERS ARE DEFINED AS "PARTNERS" IF BOTH OF THEIR PRIME FACTORIZATIONS CONTAIN ALL THE SAME PRIME FACTORS. FOR EXAMPLE, 15 AND 45 ARE PARTNERS SINCE BOTH ARE DIVISIBLE BY THE SAME SET OF PRIME NUMBERS 3 AND 5. HOW MANY POSITIVE INTEGERS GREATER THAN 50 AND LESS THAN 100 ...
September 11, 2012 by DEANDRA

science
1. How is the equator similar to the prime meridian? (1 point) Both the equator and prime meridian are lines that divide Earth into the Northern and Southern hemispheres. Both the equator and the prime meridian are imaginary base lines from which locations of Earth can be ...
May 15, 2014 by TTR+S<3

math
You can use the prime factorization of a number, written as the product of powers of prime numbers, to find the number of factors the number has. First, express the number as a product of powers of prime numbers; for example, 36=2^2 3^2 (that is 2 squared and 3 squared)Then ...
October 15, 2010 by m

Calculus
I saw this question asked, but I didn't understand the answer format. My prof doesn't use dx and dy after he has differentated the problem. He just uses (for example) 8x+2+y+xy(prime) The question is this: 4x^2+2x+xy=12 and y(2)=-4 find y(prime)(2) by implicit differentiation.
February 24, 2010 by Elisabeth

Math
If a composite number has the first five prime numbers as factors, what is the smallest number it could be? Write that number's prime factorization.
September 23, 2009 by Sue

math
the sum of the digits of a two digit prime number is substracted from the number. prove that the difference cannot be a prime number.
April 12, 2012 by mima

math
I'm a bit confused on the whole lesson on finding coordinates on a graph. With prime or double Prime, and with the shapes. if some can explain it to me in a easier way, that would be cool. Thanks! (sorry if I didn't explain my problem well enough)
September 11, 2014 by dave

math prime factorization
write the prime factorization of 15 using exponents.
September 28, 2009 by NINA

Prime Factorization
What is the prime factorization of 1,521? Please show work. Thanks!!
December 6, 2010 by Thanks to all Jiskha Teachers

math
You can use the prime factorization of a number, written as the product of powers of prime numbers, to find the number of factors the number has. First, express the number as a product of powers of prime numbers; for example, 36=2 to power 2 3 to power 3 Then increase each ...
June 22, 2009 by thomas

math
You can use the prime factorization of a number, written as the product of powers of prime numbers, to find the number of factors the number has. First, express the number as a product of powers of prime numbers; for example, 36=2 to power 2 3 to power 3 Then increase each ...
June 22, 2009 by thomas

MATH 101
Factor completely. Be sure to factor out the greatest common factor first if it is other than 1. (If the polynomial is prime, enter PRIME.) 56a^2+39ab-27b^2
October 13, 2014 by Haylee

Math
I am a prime number between 40 and 50. If you add one to me the sum of the prime factors of that composite number is 11. What number a I.
September 24, 2007 by Danielle

math
I am a prime number between 40 and 50. If you add one to me, the sum of the prime factors of that composite number is 11. What number am I?
September 26, 2007 by veronique

Math
I am a prime number between 40 and 50. If you add one to me, the sum of the prime factors of that composite number is 11. What number am I?
November 30, 2008 by Kris

math
number is greater than 50 and less than 100. you can make exactly 5 different rectangles with a mystery numbers of tiles. its prime factorization consists of only one prime number. whats my number
January 24, 2011 by Anonymous

math
How to you do the prime factorisation of 350 using exponets? Just break it down into smaller and smaller factors until are are prime. 350 = 50 * 7 = 10 * 5 * 7 = 5*2*5*7 = (5^2)*2*7 1000
January 16, 2007 by Lesley

Math
I have a ? that I am kind of stuck on. It says give an infinite list of natural numbers that are not prime. I know half of the numbers are prime and half are not, but I'm not sure how to answer it. Thanks.
February 15, 2011 by Jon

Math I need help Ms. Sue please answer!
6th Grade Math: Write 144 as a product of prime factors. Then write the prime factorization using exponents.
September 25, 2012 by Angelina

math
The difference between two prime numbers is 1985. The larger of these two prime numbers is A. 2431 B. 2002 C. 1987 D. 1986
August 8, 2014 by Kitty

Algebra
Is there any prime number whose root is an integer? I meant to say Square Root Nevermind I figured it out. Good work. If a prime number by definition has no factors, ...
June 26, 2007 by Jess

nonlinear algebra
Use prime factorization to simplify the following square root leave as exact answer. How do you find the prime factors of this problem? 112 square root
March 15, 2013 by Kylie

discrete math
which positive integers less than 12 are relatively prime to 13 Since 13 has no factors, then all integers 2, 3, 4, 5, 6....11 are relatively prime to 13
November 6, 2006 by thisha

MATH
THE VALUE 2 TO THE 8TH POWER - 1 IS DIVISIBLE BY THREE PRIME NUMBERS. WHAT IS THE SUM OF THE THREE PRIME NUMBERS?
September 11, 2012 by CASSIE

heeeeeeelp math
P is a point outside of circle Γ. The tangent from P to Γ touches at A. A line from P intersects Γ at B and C such that ∠ACP=120 ∘. If AC=16 and AP=19, then the radius of Γ can be written as a root b/c where a and c are co prime and c is not ...
June 7, 2013 by clavin

math
how would you calculate teh largest prime number given a number x so for example say someone inputs 8 , the largest prime number is 7.
October 23, 2014 by sam

maths
Find the sum of the smallest 2 digit prime number and the largest 2 digit prime number.
March 31, 2012 by ssssss

math
which of these statements about prime and composite numbers is true? F)all prime numbers are odd. G)all prime numbers have three factors. H)all composite numbers are divisible by two. J)all composite numbers have more then two factors i thinks it (J) but im not sure
March 25, 2010 by george

math
what's the prime factorization of 293? what's the prime factorization of 525? and factorization of 216?
September 19, 2008 by brandy

math
a mystery number is bigger than 50 and larger than 100. you can make exactly five different rectangles with the mystery number of tiles. its prime factorization consists of only one prime number. what is the number
November 14, 2012 by tom

math
a mystery number is bigger than 50 and larger than 100. you can make exactly five different rectangles with the mystery number of tiles. its prime factorization consists of only one prime number. what is the number
November 14, 2012 by tom

Geography
Is this correct? What line of longitude forms the other half of the prime meridian? When joined with the Prime Meridian the 180 degree of longitude forms a complete circle
September 14, 2012 by Sean

algebra
Use the discriminant to find out whether this quadratic polynomial can be factored. Factor the polynomial if it is not prime. This polnomial is prime, so I cannot factor it. I just need help with the discriminant part. Thaks in advance for your help. 4x^2-27x+45
September 3, 2010 by Trina

Math
There are 13 flavbors at a local ice cream parlor. Is the number 13 a prime number or a composite number? If it is composite, write the number as the product of prime numbers
August 9, 2010 by Sai

Math
Chuck listed the prime factors of a number 2,3,7 Did Chuck list the prime factors of 21,35,42,or 45? A.21 B.35 C.42 D.45 C?
March 7, 2012 by running.from.myself

math
Is "67" a prime or composite number? 67 IS A PRIME NUMBER
November 2, 2006 by no name

Flec
what is a prime factor? How do I find the prime factor?
November 9, 2010 by Dan

math last one help
sally drew a factor tree of a composite number and ended up with 4x4x5x5x3 as the prime factorization. explain what is wrong with this factorization 1. what is the correct prime factorization? 2. what is the composite number that was factored?
August 29, 2013 by daniel

Prime Minister
If you were Prime Minister Stephen Harper, what position would you take on the issue of nuclear power generation in Canada? I would just stop, and end the nuclear generations. It's better than dealing with risks, and entering the zone of danger. I need help. I dont really get ...
April 19, 2011 by Anonymous

biochemistry
Calculate the delta G naught prime f (free energy of formation) of the following compounds at 25 degrees celsius. ethyl acetate (ethyl acetate + H2O <=> ethanol + acetate- + H): delta G naught prime =-19.7 kj/mol); the pka of acetic acid is 4.76) Free Energies for: H2O...
September 8, 2013 by meraki

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