What is the smallest number that must be added to 123 so that it becomes exactly divisible by 5?

Find all the numbers less than 60 that are prime and have a remainder of 3 when they are divided by 7? Should have three answers but we only come up with two. Prime numbers less than 60: 2,3,5,7,11,13,17,23,29,31,37,41,43,47,54,59. 17/7 = 2.43 *19/7 = 2.71 round up = 3 *23/7 = 3.28 round = 3 29/7 = 4.14 31/7 = 4.42 What are we doing wrong. Thank you, t2newark

Page 2

I need some help with a problem where one time I come up with the answer 140 and the other is 240. Can you help me? How do you find the least common multiple (LCM) for the following group of numbers. 12, 20, and 35. Can you explain how you come up with your answer.

Thanks allot.

Page 3

How many sets {a,b,c} of three prime numbers are there such that the sum of any two numbers from the set is also prime? choose the answer and explain the reason to choose your response infinitely many no such sets exactly one

more than one, but finitely many

Page 4

In years, how old was the older person when you were born? 28 (Myself) 10 (brother) 50 (mother) Write an equation that models how old in years each of you will be, when your ages add up to 150 years old. For example, if x = your age and the eldest person was a year older than you, you would write their age as x + 1. Then the equation would be: x + (x+1) = 150. Explain the reasoning which helped you develop your equation.

Solve for your future ages. Are your answers reasonable, do they add up to 150?

Page 5

Refer back to Week One Discussion and use the names and ages of yourself and the other two people you selected. Make sure one is older than you and one is younger than you. In years, how old was the older person when you were born? Write an equation that models how old in years each of you will be, when your ages add up to 150 years old. For example, if x = your age and the eldest person was a year older than you, you would write their age as x + 1. Then the equation would be: x + (x+1) = 150. Explain the reasoning which helped you develop your equation. Solve for your future ages. Are your answers reasonable, do they add up to 150? In years, how old were you when the youngest person was born? At some point during the lives of you and the youngest person, your age will be three times his/her age at that moment. Write an equation which models how old in years each of you will be when you are three times as old as the younger person. Explain the reasoning which helped you develop your equation. Solve the equation for your ages when you are three times as old as the youngest person. Are your answers reasonable? Respond to at least two of your classmates� postings. Check their equations and investigate for mathematical errors. Help with a constructive critique. My mother is 64 years old and I'm 27 years old and my son is 5 years old. Somebody please help me I have no idea what to do.

Page 6

Find the prime factorization, GCF, and LCM for each group of monomials. A) 6, 12, 30

B) 9x^2, 5xy, 3xy^2

Page 7

Hello, I would need your help with the following proof: Let a, b, c be different prime numbers greater than 3. Show that if a + c = 2b, then 6 | (b - a). I am really stuck with this problem, my approach would be with the theorem that every prime number > 3 divided by 6 has remainder 0 or 5.

Any help would be really appreciated!

Page 8

The Prime numbers between successive gaps of ten numbers are: 2, 3, 5, and 7. 11, 13, 17, and 19. 23 and 29. 31 and 37. 41, 43, 47, and (not 49 - square of 7) 53 and 59. 61 and 67. 71, 73, and 79 and (not 77) 83 and 89. 91 and 97. Can you see a pattern forming? Despite of this I was not able to formulate a simple and general expression so that I could tell whether or not a number is prime by simply looking at the number and applying the above sequence. Can you help? Please! I am very excited about this project. It is my own thought and has not been assigned to me as a homework.

Thankyou.

Page 9

If m is an odd integer, which expression always represents an odd integer? A) 3^m - 1 B) (m - 1)/2 C) (2m - 1)^2 D) (m + 1)^2 E) m^2 + 2m + 1

Please explain how I could approach and solve this, thanks!

Page 10

Formulas that yield prime numbers, for example: x squared - x + 41 Select 5 numbers for X,- 0 , two even, two odd- substitute them in the formula see if prime numbers occur. try to find a number for X that when substituted in the formula yields a composite number. This might as well be in Greek to me... Can you please help?

Page 11

please help me ! On a map , three-fourths of an inch represents 36 miles . If two towns are 2 1/2 inches apart on the map , find the actual distance between them . am I wrong ? 2 1/2 = 5/2 = 2.5 = 2.5 x 3/4 x 36 = 270/4

= 67.5 miles

Page 12

Please help me solve this homework problem. The least common multiple of 2 numbers is 3780, and the greatest common factor is 18. Given that one of the numbers is 180, what is the other number? I started out by 3780/180= 21. But 18 is not a factor of 21? What am I doing wrong? Thanks!

Laura

Page 13

The side length of a square starts at 0 cm and then begins increasing at a constant rate of 9 cm per second. a. Write a formula that expresses the side length of the square in cm, s ,in terms of the number of seconds t since the square started growing. s= b Write a formula that expresses the area of the square in cm2, A, in terms of the side length of the square in cm, s. A= c. Write a formula that expresses the area of the square in cm2, A, in terms of the number of seconds t since the square started growing. A= d. Suppose the function f determines the area of the square in cm2 given a number of seconds t since the square started growing. Write a function formula for f.

f(t)

Page 14

hi i need the divisibility tes for 12 and 26, or help with my problem im doing in math "You need to find a salary for a new employee and you want to pay him an even dollar amount between $23,000 and $24,000 that can be paid by every two weeks (26 times a year) or monthly (12 times a year)you want each payment to be an exact dallor amount" this came from passport to mathmatics, book 2, 1999 edition. Pg. 116 #17

thank you

Page 15

Your local radio station is having their yearly music player and concert ticket giveaway. For one minute, every 5^\text{th}5 th 5, start superscript, start text, t, h, end text, end superscript caller will win a music player and every 7^\text{th}7 th 7, start superscript, start text, t, h, end text, end superscript caller will win concert tickets. You were just the first caller to win both a music player and concert tickets! What number caller were you?

Page 16

Page 17

Hello- I need,(in a 6th grade defintion),help on DIVISIBILTY, and PRIME AND COMPOSITE NUMBERS!! It would help If you could explain the rules for: 2,5,10,and,3. and If possible type a short list of PRIME NUMBERS, and, COMPOSITE NUMBERS!.< My teacher didn't explain this in an eaasy way...LOL!! The worksheet is divided into four boxes, and in each box, I need to find all the numbers divisible by: 2,5,10,3. In each box I need to color in the numbers to create a picture!! THIS IS SO CUNFUSING!!!! NEED HELP ASAP!!!! Sincerely, -Anonymous

Page 18

1. What is the prime factorization of 598? 2. Choose the correct statement? 12 is a factor of 4; 30 is a factor of 7; 7 is a factor of 30; 4 is a factor of 12. 3. Which of the following shows a pair of prime numbers? 21,33; 21,59; 59,73; 33,73. 4. Write the prime factorization of 120? 5. Which of the following numbers is not composite? 31,39, 35, 27 6. Determine the prime factorization of 3960? 7. What is a factor of 40? 8. What is a factor of 12? 9. Which is not a factor of 12? 3, 24, 4, 6 10. Which of the following numbers is prime? 51, 57, 97, 27 11. Which is not a factor of 48? 12, 24, 96, 16 12. Write 900 as a product of primes? 13. Write 2016 as a product of primes? 14. Which of the following numbers is prime? 15, 21, 83, 25

15. Which of the following numbers is prime? 10, 3, 21, 4

Page 19

When a number is divided by 10, the remainder is 9. When it is divided by 100, the remainder is 89. When it is divided by 1000, the remainder is 789. Which of the following could be that number? A) 2 987 B) 6 789 C) 2 189 D) 987 E) 1 000

Page 20

Hi, I just happened to wonder what the prime factorization of 6857599914349403977654744967172758179904114264612947326127169976133296980951450542789808884504301075550786464802304019795402754670660318614966266413770127 was and I don't think your calculator (//www.algebra.com/algebra/homework/divisibility/factor-any-number.solver) is giving me the right answer. It tells me: 6857599914349403977654744967172758179904114264612947326127169976133296980951450542789808884504301075550786464802304019795402754670660318614966266413770127 is NOT a prime number: 6857599914349403977654744967172758179904114264612947326127169976133296980951450542789808884504301075550786464802304019795402754670660318614966266413770127 = 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 269 * 377911 * 22658561 but I happen to think that 6857599914349403977654744967172758179904114264612947326127169976133296980951450542789808884504301075550786464802304019795402754670660318614966266413770127 = 5174413344875007990519123187618500139954995264909695897020209972309881454541 * 1325290319363741258636842042448323483211759628292406959481461131759210884908747

could you maybe shed some light on the matter? I tried to get my Ti83 to work it out but it acted odd... Also, I don't think 5174413344875007990519123187618500139954995264909695897020209972309881454541 = 2^200 * 5^2 * 251003 * 513148501, because that would be 5174413344875008388754966029640933369099339830916797506938194267747857203200, and I'm also pretty sure 5174413344875007990519123187618500139954995264909695897020209972309881454541 and 1325290319363741258636842042448323483211759628292406959481461131759210884908747 are both prime. How come it's not giving me the right answer? Is there a good calculator (something better than Ti83) that would factor this kind of numbers for me? Thankx!

Page 21

Page 22

please help me solve this problem factors the nos. a.231 and b.174 into prime factors

set a = (1, 6/5, -5/6. -4, -r, 0, square root of 18, 6.2.which of the nos in A are irrationals, integers, negative, positive rationals

Page 23

After j candies were given to k kids, each kid has the same number of candies, with four candies remaining. In terms of j and k, how many candies did each kid get? A) (j/k) + 4 B) (j/k) - 4 C) (j + 4)/k D) (j - 4)/k E) (jk)/k + 4

Please explain how I could approach and solve this problem, thanks!

Page 24

Someone spilled ink on a bill for 36 sweatshirts. If only the first and last digits were covered and the other three digits were in order, 8,3,9 as in ?83.9?, how much did each cost?

Page 25

(1)-if 41x is a multiple of 11,where x is a digit what is the value of x (2)-if 3y5 is a multiple of 11,where y is a digit what is the value of y

(3)-if 41z2 is a multiple of 6,where z is a digit what is the value of z

Page 26

16,10 3,6 8,12 36,60 15,75 11,18 20,15 10.14

Última postagem

Tag