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

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

Question 38406: How do you write the following in the expanded form?:

684
Click here to see answer by AnlytcPhil(1278)

Question 38511: Can you help me with this:
6 3/4 divided by 3
Click here to see answer by Nate(3500)

Question 38511: Can you help me with this:
6 3/4 divided by 3
Click here to see answer by stanbon(57962)

Question 38526: How do you write the number in expanded form:

30,672
Click here to see answer by Alwayscheerful(414)

Question 38548: Can you write the numbers 684 in expanded form?
Thank you
Click here to see answer by fractalier(2101)

Question 38547:
Can 89/13, 151/11 or 223/23 be simplified? Even though they are reduced to the lowest terms, but can they be simplified? Which ones can or none of the above. Thank you
Click here to see answer by AnlytcPhil(1278)

Question 38552: How do you write up and find the prime factorization of the number 20?
Click here to see answer by checkley71(8403)

Question 38593: Evaluate this problem and answer in the lowest terms:
9/11 - 3/11 + 7/11
Click here to see answer by hellyeah(21)

Question 38592: Add in the lowest terms.
13/18 + 11/18
Click here to see answer by hellyeah(21)

Question 38594:
How do you find the least common multiple (LCM) for the following group of numbers?
12, 20, and 35
Click here to see answer by hellyeah(21)

Question 38595: Can you help me solve the following problem. It has to be answered in the lowest terms.
One task took 7 minutes (min), a second task took 12 minutes, and a third task took 21 min. How long did the three tasks take, as a fraction of an hour?
Click here to see answer by lyra(94)

Question 38597: Can you help me subtract:

13/15 - 11/20
Thanks!
Click here to see answer by rapaljer(4667)

Question 38596: Add:
1/3 + 5/12 + 4/5
Click here to see answer by lyra(94)

Question 38596: Add:
1/3 + 5/12 + 4/5
Click here to see answer by hellyeah(21)

Question 38596: Add:
1/3 + 5/12 + 4/5
Click here to see answer by rapaljer(4667)

Question 38598: Can you help me with this problem:
1 1/15 + 3 3/10 - 2 4/5
Click here to see answer by lyra(94)

Question 38600: Could you help me solve the following problem?
The interest rate on an auto loan in May was 12 3/8%. By September the rate was up to 14 1/4%. How many percentage points did the interst rate increase over the period?
Click here to see answer by Nate(3500)

Question 38599:
Can you help me solve the following problem?
Robin ran 5 1/3 mi. on Sunday, 2 1/4 mi. on Tuesday, and 3 1/2 mi. on Friday.
How far did she run during the week?
Click here to see answer by Nate(3500)

Question 38699: How can I solve this problem:
Lunch meat sells for about $3 per pound. You use about 1/2 pound per day for sandwiches. How much should you budget for lunch meat over the next month (about 20 workdays)?
Click here to see answer by Nate(3500)

Question 38701:
Can you help me find the quotient?
17 11/12 divided by 6 1/10
Click here to see answer by checkley71(8403)

Question 38857: Can someone help me solve this problem?
Julio works as a quality control expert in a beverage factory. The assembly line that he monitors produces about 20,000 bottles in a 24-hour period. Julio samples about 120 bottles an hour and rejects the line if he finds more than 1/50 of the sample to be defective. About how many defective bottles should Julio allow before rejecting the entire line?
Thanks!
Sher
Click here to see answer by fractalier(2101)

Question 38884: Can you please help me with the following problem:
How do you find the least common multiple (LCM) for the following group of numbers? 12, 20, and 35.
Can you break down your answer so I will be able to understand?
Thanks!
Click here to see answer by Cintchr(481)

Question 38881: Can you help me add the following problem in the lowest terms:
13/18 + 11/18
Thanks!
Click here to see answer by longjonsilver(2297)

Question 39077: Can someone out there help me with this problem?
How do you find the least common multiple (LCM) for the following group of numbers.
12, 20, and 35. Explain if you can how you come up with your answer.
Thanks!
Click here to see answer by venugopalramana(3286)

Question 39090: 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.
Click here to see answer by AnlytcPhil(1278)

Question 38700: How do I solve this problem?
Julio works as a quality control expert in a beverage factory. The assembly line that he monitors produes about 20,000 bottles in a 24-hour period. Julio samples about 120 bottles an hour and rejects the line if he finds more than 1/50 of the sample to be defective. About how many defective bottles should Julio allow before rejecting the entire line?
Thanks!
Click here to see answer by fractalier(2101)

Question 38696: Could you help me solve this problem?
1 1/15 + 3 3/10 - 2 4/5
Thanks!
Click here to see answer by fractalier(2101)

Question 39369: Can someone help me with this problem?
Subtract:
4 7/9 - 2 11/18
Thanks!
Click here to see answer by Nate(3500)

Question 38698: Could you help me solve this problem?
The interest rate on an auto loan in May was 12 3/8%. By September the rate was up to 14 1/4%. How many percentage points did the interest rate increase over the period?
Thanks!
Click here to see answer by fractalier(2101)

Question 39603: need the prime factors of 200 elementary and intermediate algebra there is no isbn number. if you can't answer the question then it is ok
Click here to see answer by prabhjyot(164)

Question 39720: Could someone out there help me divide this problem?
3.2318 divided by 0.52
Thanks!
Sher
Click here to see answer by Nate(3500)

Question 39798: Can someone help me with this problem?
The distance from Philadelphia to Sea Isle City is 100 mi. A car was driven this distance using tires with a radius of 14 in. How many revolutions of each tire occurred on the trip?
Thanks,
Sher
Click here to see answer by fractalier(2101)

Question 39803: Can someone help me?
Seven employees of an office donated a total of $172.06 during a charity drive. What was the average donation?
Lyn
Click here to see answer by fractalier(2101)

Question 39802: Can someone help me?
Seven employees of an office donated a total of $172.06 during a charity drive. What was the average donation?
Lyn
Click here to see answer by fractalier(2101)

Question 39997: How do I divide this problem by moving the decimal point?
32.85 divided by 1,000
Thanks,
Lyn
Click here to see answer by stanbon(57962)

Question 40063: Add. 20 + (–8)
Click here to see answer by fractalier(2101)

Question 40062: Add. 0 + (–5) + 13 + (–3)
Click here to see answer by fractalier(2101)

Question 40044: i thought it was 4/14 but i was wrong...Which of the following is not a fractional representation for 2/7..

6/21
4/14

8/18

4/21

Click here to see answer by fractalier(2101)

Question 40263: I couldn't figure out how to type a straight line on my computer so I used [ instead.
[ 4] + [ - 3 ]
Click here to see answer by longjonsilver(2297)

Question 40261: I'm trying to type this out the best way.
Straight Line 11 Straight Line + Straight Line - 11 Straight Line
straight line looks like a straight line in between of the two different numbers like
thanks sarah
[ 11 ] + [ - 11 ]
Click here to see answer by fractalier(2101)

Question 28282: what is the smallest 6 digit # that is divisible by 8?
Click here to see answer by fractalier(2101)

Question 40469: Can someone out there help me with this problem?
I have a square and in it a circumference. The shaded area is all around the circumference in the square. I have 15 ft. on the bottom and 15 ft. on the side.
I need to find the area of the shaded part using 3.14 for pi and round the answer to one decimal place.
Please help me.
Thanks, Sher
Click here to see answer by stanbon(57962)

Question 38697: Could you help me solve the following problem?
Robin ran 5 1/3 miles on Sunday, 2 1/4 miles on Tuesday, and 3 1/2 miles on Friday. How far did she run during the week?
Click here to see answer by fractalier(2101)

Question 18185: what are the divisiblty rules for 7,13 and others?
Click here to see answer by fractalier(2101)

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