Questions on Algebra: Average answered by real tutors!

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Question 550261: order the folling from least to greatest. be sure to show all of your work
7/8
5/6
-6
-8
5
Click here to see answer by Alan3354(30993)

Question 550255: evaluate
4x, for x=4
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Question 550264: translate to an algebraic expression
A number divided by 15
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Question 550266: order the following from least to greatest. be sure to show all of your work
7/8
5/6
-6
-8
5
Click here to see answer by Alan3354(30993)

Question 550260: perform the indicated operation. write your final answer exactly as a fraction in lowest terms. please show all of your work
7/10-1/2
Click here to see answer by Alan3354(30993)

Question 550484: lorna swam 30 laps per day for the first 6 days of swim practice.She swam 40 laps per for the next 4 days of practice.What was the mean number of laps that lorna swam per day for these 10 days ?

On the real number line,between what to numbers consecutive integers in the two numbers that multiplies 7?
Click here to see answer by stanbon(57290)

Question 550624: perform the indicated operation and if possible, simplify. please shoeall of your work. write your final answer exactly as a fraction in lowest terms.
32/85 / 50/51
Click here to see answer by mananth(12270)

Question 550623: simplify, please show all of your work. write your final answer exactly as a fraction in lowest terms.
114/123
Click here to see answer by Alan3354(30993)

Question 550622: find the prime factorization of 702 please show all of your work.

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Question 550622: find the prime factorization of 702 please show all of your work.

Click here to see answer by Edwin McCravy(8904)

Question 550627: write a true sentence using either < or >
-2.172_-2.17
Click here to see answer by jim_thompson5910(28548)

Question 550621: evaluate
2x+7y/30
for x=15 and y=3
write your final answer exactly as a fraction in lowest terms.
Click here to see answer by jim_thompson5910(28548)

Question 550619: translate the following phrase an algebraic expression
the difference of fifteen and twice a number
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Question 550619: translate the following phrase an algebraic expression
the difference of fifteen and twice a number
Click here to see answer by Alan3354(30993)

Question 550626: perform the indicated operation, and if possible, simplify. please show all of your work. write your final answer exactly as a fraction in lowest terms.
3/14+2/5
Click here to see answer by jim_thompson5910(28548)

Question 550837: -48/(7-9)8-2[1-5(2-6)+3]
Click here to see answer by Maths68(1474)

Question 550836: (-2/7)(5/-8)3/-1
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Question 550835: -7+9n-8n
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Question 550896: dan sold an arce of land in a remote area.he paid a real estate agent 6% of the sales prince to help him sell it.he also paid a tax of $32.if dan had $21,968 left after paying taxes and the agent?

Click here to see answer by mathstutor458(57)

Question 551111: on 11 quiz grades, the average is 93. If a teacher drops the lowest grade of 81, what is the new average?
Click here to see answer by Alan3354(30993)

Question 551068: 2^-1+9^1/2/9
1/2 +2/9
1/2+3/9= 1/2+3=1/2+6/2
32^-2/5+6^0
2^-2+1
(2)^-2+1= 1/2^2+1=1/4+1=2/4
I seem to be running into some problems with these two questions. Can someone help and evaluate my work
thanks
Click here to see answer by mathstutor458(57)

Question 551181: Adam's average on four tests is 80. which of the following cannot be the number of tests on which he earned exactly 80 points? A)0 B)1 c)2 D)3 E)4
Click here to see answer by solver91311(16877)

Question 551450: X/2= 8 how do I expand it like this? X=8 -2 , x=6 ???? I forgot how to do that algebra plz send me some rules
Click here to see answer by richard1234(5390)

Question 551514: If you get a 89% on a test and you miss 5 questions, how many questions were on the test?
Click here to see answer by josmiceli(9668)

Question 551642: If x=2y and 8y=z, what is X in terms of z?
THANK YOU AND GOD BLESS YOU!=)
Click here to see answer by nerdybill(6958)

Question 551641: Twenty five people are asked to donate money to a local charity.Exactly fifteen give least P100 each. If x is the average ( arithmetic mean )amount donated, what is the lowest possible value of x?
THANK YOU AND GOD BLESS YOU!
Click here to see answer by fcabanski(874)

Question 551640: The score for half students in a class on a certain test was 90.The score for another four of the students was 84. If the average ( arithmetic mean) score for all of the students was 82,what was the average score for the remaining students?
THANK YOU AND GOD BLESS YOU!
Click here to see answer by KMST(1868)

Question 551903: Megan took 8 Spanish tests and has an average of exactly 95. Find the lowest score she could have scored on any one of the 8 tests.
Click here to see answer by richard1234(5390)

Question 552156: Harold calculated the mean of 5 numbers to be 68. Then he found that he made an error and had written 70 for one of the numbers when he should have written 80. What is the mean of the correct 5 numbers?
Click here to see answer by ankor@dixie-net.com(15647)

Question 552183: Please help me solve this problem.
Jamyce has received grades of 89, 92, and 85 on 3 tests. What grade must she get on the next test in order to have an average of 90?
89+92+85= 266
266/3 = 88.6666...
What is the next step?

Click here to see answer by nerdybill(6958)

Question 552218: A square plot has perimeter of 140 yards. Find its area in square feet.
19600

Click here to see answer by jim_thompson5910(28548)

Question 330189: what is the square root of 81
Click here to see answer by 1012137(2)

Question 332570: A student has earned scores of 87, 81, and 88 on the first 3 of 4 tests. If the student wants an average (arithmetic mean) of exactly 87, what score must she earn on the fourth test?
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Question 552410: the mean of 4 test scores is m90. what is the sum of the test scores

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Question 552490: The average of numbers x, y and z is 7 and average of x and y is 5. Value of z is

Click here to see answer by Alan3354(30993)

Question 552858: Emily earns $7.50 per hour. How much does she earn in 3 hours?
Click here to see answer by jim_thompson5910(28548)

Question 553465: A number is multiplied by 3. If 3 is subtracted from the product you get 24?

Click here to see answer by IWork4Dessert(60)

Question 553465: A number is multiplied by 3. If 3 is subtracted from the product you get 24?

Click here to see answer by mathstutor494(95)

Question 553534: set of data has a normal distributin with the mean of 120 and a standard deviation of 10

Click here to see answer by rapaljer(4667)

Question 553562: If i wanted to go on a trip, i have to pass class with an 82.5%. I had 71% last semester . What would i have to get this semester? they take the average of both semesters.
Click here to see answer by ankor@dixie-net.com(15647)

Question 553797: Amelia has been officially at bat 175 times and has hit 35 times. Her batting average is (35/175)=0.200. How many consecutive hits must she get to increase her batting average to 0.500?
Click here to see answer by Alan3354(30993)

Question 553601: Please Help.
16y^2/3y^2-24y+48 * 3y-12/4y
Click here to see answer by ankor@dixie-net.com(15647)

Question 555225: find average of 7,9,13,18,4,2,1,6,8,12,15,24,36,81
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Question 555317: If i got 12 out of 18 questions correct on my quiz, what was my score?
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Question 555413: What is the average of +5,-3,-6,+7
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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