Questions on Algebra: Average answered by real tutors!

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Question 62421: 5466n+987x-h=6435-h

Click here to see answer by funny(1)

Question 62476: I am just starting 7 grade please show me how to find the missing numbers n,8,18,3,6,and 3 mean =9
Click here to see answer by josmiceli(9661)

Question 62702: Joe Smith in the first half of the baseball season has 33 hits out of 120 times at bat. What is the decimal equivalent for Joel’s hitting (batting average)?

I have come up with an average of .363, but for some reason, that does not look right. I do not know what I am doing wrong. Someone please help me!
Click here to see answer by joyofmath(189)

Question 62865: All students in a class were weighed. The average was 31.4k, with the total weight of 18,337.6k. How many students in the class?
Click here to see answer by stanbon(57246)

Question 62884: I am a7 grade student and I do not understand how to work these problems can someone do astep by step for thank yuo very much
Find the missing number,n
185,86,79,140,192,36,185,85,85,112,n mean=115
129,60,63,52,27,n,75,193,67 mean=77
please help I need this tomorrow.
Click here to see answer by checkley71(8403)

Question 62908: I know how to do the problem with just the mean but I do not know what to do with the mean and the median is there
4,n,5,11,5 mean=8 median=5 find the missing number for please.
Click here to see answer by stanbon(57246)

Question 62914: iNEED HELP AGAIN BUT THIS IS THE MODE AND MEDIAN IN FINDING THE MISSING NUMBER
7,22,14,14,22,26,N MODE=14 MEDIAN=14
Click here to see answer by Edwin McCravy(8882)

Question 63226: These are Joey's grades for this marking period:84,92,90,82,87.What would he have to get on his next test to have a mean average of 88?

Click here to see answer by 303795(595)

Question 64207: How do I find the maximum of maximum of a group of numbers?
Click here to see answer by stanbon(57246)

Question 64383: If Jim rode a bike trail for 10 miles, and 2/3 was ridden over a mountain trail, how long is the mountain trail?
Click here to see answer by stanbon(57246)

Question 64386: Where do you put the parentheses to make this true?
5-3x2+8x5-2;28
Click here to see answer by stanbon(57246)

Question 64462: im stumped i took the basic algebra at comm college a few years ago and someone posed 2x+7=10 yes im being stupid but please help
Jon
Click here to see answer by stanbon(57246)

Question 65110: The average of two four digit positive integers is found by placing a demimal point between the two numbers. Find the sum of the two four digit numbers.
Click here to see answer by venugopalramana(3286)

Question 66663: The length of one of the equal legs of an isosceles triangle is 8 cm less than 4 times the length of the base. If the perimeter is 29 cm, find the length of one of the equal legs.
Click here to see answer by checkley71(8403)

Question 66696: A home purchased for 300,000 depreciated 8% over a 1 year period. What was the value of the home at the end of the year?
Click here to see answer by Nate(3500)

Question 67574: The average weight of a group of children is 100 pounds. Trisha, who weighs 112 pounds, then join the group. This raises the average weight of the group to 102 pounds. How many children were in the original group?
Click here to see answer by ankor@dixie-net.com(15638)

Question 68705:

The official record for swimming the English Channel, a distance of 18 miles, is held by Penny Dean, who completed her swim in 7 hrs 40 minutes What was her average speed, in miles per hour?
Click here to see answer by checkley71(8403)

Question 70026: An electrician is working on a project for which she will need to run straight conduit pipe for lengths of 84 feet, 72 feet, and 108 feet. She wants to precut pieces of pipe to one standard length so that she can connect the pieces to obtain the three lengths she needs. What is the longest length that she can make the precut pieces?
A)14 ft
B)10 ft
C)12 ft
D)6 ft
Click here to see answer by checkley75(3666)

Question 70528: 6:9=x:3
Click here to see answer by stanbon(57246)

Question 70632: m+m=
Click here to see answer by 303795(595)

Question 71553: wot is algebra we have done it in class but im ashamed to say this but i never listen so i dont know what to do so i copy otheres and like when we do tests ill fail. txt bak plz from zara.xxTHANK YOU SOOO MUCH .x
Click here to see answer by mathman409(67)

Question 71813: please try to solve for all, but if you don't have time try for b for sure. :D
(0.01a+0.05b+0.10c+0.25d)/(a+b+c+d)=(0.01(a-1)+0.05b+0.10c+0.25d)/((a-1)+b+c+d)
Click here to see answer by venugopalramana(3286)

Question 72159: Equation 1: -A + 4B + C = 0 Equation 2: 3A - 2B + C = 0
How do I answer the equations in terms of C?
Click here to see answer by checkley75(3666)

Question 72356: This is from a pre-algebra worksheet. We do not understand how to solve for P when there is a fraction contained in a fraction. Thanks for any help you can give!
2 1/2 P
----- = -----
5 4
Read as: 2 1/2 over 5 equals P over 4. Solve for P
Click here to see answer by pleasuretohelp(9)

Question 72433: Florence scored 74 and 81 on two history tests. Waht must she score on her test to have a B avergae
Click here to see answer by funmath(2925)

Question 72800: find the average of 1242, 87, 521, and 169,810.
Click here to see answer by checkley75(3666)

Question 17234: If y= 76 and N= 576 what would the answer be
Click here to see answer by wodkit02(9)

Question 76980: Hi, here is the question:
The average (arithmetic mean) of the test scores of a class of p students is 70, and the average of the test scores of a class of n students is 92. When the scores of both classes are combined, the average score is 86. What is the value of p/n?
I first tried 86=70p + 92n, but quickly realized it wasn't going to work. I don't know how to work it so I can eliminate one of my unknowns and solve for the other. Help! Thanks.
Click here to see answer by scott8148(6628)

Question 77769: 1.The average of the numbers 5,9,10,13 and a equals 11. Find the value of a.
2. Express the following in the form a+bi, where a and b are real numbers
3+i/1+2i

Click here to see answer by stanbon(57246)

Question 77831: In college, some courses contribute more towards an overall GPA than other courses. For example, a science class is worth 4 points, math is worth 3 points, history is worth 2 points; and English is worth 3 points. The values of the grade letters are as follows, A=4, B=3, C=2, D=1, F=0. What is the GPA of a student who made a "C" in Trigonometry, a "B" in American History, an "A" in Botany, and a "B" in Microbiology? Please explain how to work this problem! Thanks so much for your time to help me!
Click here to see answer by uma(370)

Question 78258: the promethus fountain in new york city pumps 60,000 gallons of water every 15 minutes. what is the unit rate
Click here to see answer by Edwin McCravy(8882)

Question 78272: wha percent of 375 is 40???
Click here to see answer by checkley75(3666)

Question 79383: Compute -
0.37 - 1
Click here to see answer by sprolden(40)

Question 79437: I know how to solve for college GPA but not for high school
during your high schoolyears, your grades were as follows; English-4A's; Math-3B's Science-2B's and 1 A; PE- 4A's; American History-B; Economics-A; World History-B; Electives-3A's

A=4.0, B=3.0, C=2.0 D=1.0 E=0.0

Click here to see answer by scott8148(6628)

Question 79576: factor by grouping xy+3x+2y+6/xy+3x+5y+15
Click here to see answer by Earlsdon(6287)

Question 79603: find the average of the numbers
35, 38, 34, 39, 32, 38
Click here to see answer by Edwin McCravy(8882)

Question 78267: it is recommended that no more than one person be allowed into the shallow end of an outdoe public pool for every 15 square feet of surface area.if a local pool's shallow end has a surface area of 1,800 square feet ,are the lifeguards corect to allow 120 people into that part of the pool?????
Click here to see answer by Smirnov(15)

Question 81634: I don't really know what category this problem falls under. It is confusing as to how to set up the problem. Please help.
The difference of two numbers is 91. The second is 5 less than 5 times the first. What are the two numbers?
Click here to see answer by renevencer22(21)

Question 56689: How would you get the Average number Days Late out of the formula listed below. The chart was done in an excel spreadsheet.
=(E8*4)+(E8*5)+(F8*6)+(H8*7))/(D8+E8+F8+G8+H8)
The letters represent days, but why would you use the same day twice and why do you multiply by 4, then 5, then 6, then 7. If the formula is supposed to be for the AVERAGE Number of Days Late, wouldnt you just take the number of days like 3 and divided it into 10? If you can help explain this, i would be more than grateful. Thank you.
Click here to see answer by 303795(595)

Question 83718: The average weight for a group of 20 women is 130 pounds. If the average weight for 3/4 of these women was 140 pounds, what was the average weight, in pounds, for the rest of the women?
I know the answer is 100 but I can't figure out how I got. It might not be 100?
Click here to see answer by checkley75(3666)

Question 86315: A bicyclist rode into the country for 5 h. In returning , her speed was 5 mi/h faster and the trip tool 4 h.What washer speed each way?
Click here to see answer by scianci(186)

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