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Question 98137: I HAVE A PROBLEM THIS IS THE QUESTION:
HOW MANY CARS ARE PRODUCED ON AVERAGE BY BOTHS COMPANIES IN 20 YEARS?
COMPANY X = 1250 CARS PER YEAR.
COMPANY Y = 2500 CARS PER YEAR.
ANSWERS:
A: 3750
B: 12500
C: 25000
D: 37500
Click here to see answer by scottnascar(12)

Question 100174: If the average of six numbers is 18 and the average of three of the numbers is 15 then what is the sum of the remaining three numbers ? Need help on how to set this up and how to figure it...Thanks so much..
Click here to see answer by scott8148(6628)

Question 100240: Solve 5(3-2x)+3 less than or equal to -2(2-3x)+4. Express your answer using interval notation.
Click here to see answer by edjones(7569)

Question 100534: If set A consists of three positive integers, a,b and c such that a< b< c, which of the following operations could not affect the median of set A.
Click here to see answer by stanbon(57282)

Question 100539: If set A consists of three positive integers a, b, and c such that a< b< c, which of the following operations could not affect the median of set A?
A) increasing the value of a
B) increasing the value of b
C) decreasing the value of b
D) increasing the value of c
E) decreasing the value of c
Click here to see answer by stanbon(57282)

Question 101135: can you give me a formula for the cost in pence of?
1. n cakes at 18p each
2. m oranges at j pence each
3. ten stamps at t pence each
Click here to see answer by stanbon(57282)

Question 101589: Shaquita average score on her first three math test is 77. she score 62 on the first test.On the third score, she score 9 more than she score on her second test. what did she score on the second and third test?
Click here to see answer by ankor@dixie-net.com(15645)

Question 101921: The average cost of six houses is $135,000. The cost of five of the houses is $128,000; $167,500; $105,400; $152,900; and $137,600. What is the cost of the sixth house?
Click here to see answer by doukungfoo(195)

Question 101919: To make an A in a class, Colin must have at least an average of 94. On the first three tests he has an average of 91. What must he average on the last three tests to have an average of 94?

Click here to see answer by Fombitz(13828)

Question 102706: Evaluate. (–6)(10) – 6
Can you help me understand this
Click here to see answer by elima(1433)

Question 102707: Evaluate. (–6)(10) – 6
Can you help me understand this
Click here to see answer by HyperBrain(694)

Question 100238: Solve 5-3/4(3x-1)= 5/8(3-2x)for x.
Please help. Thanks.
Click here to see answer by HyperBrain(694)

Question 104316: W
- + 9 = 3
7

a
- + 5 = 10
12

These are solving equations and integers.. can you explain the answers to me too? thanks
Click here to see answer by Fombitz(13828)

Question 104612: I am having a hard time with this problem. Can you help me?
Mr. Bedell has 107 fiction books in his classrooom. Mr Bedell's fiction collection is 27 more than a third of his non-fiction collection. How many non-fiction books does Mr. Bedell have? Thank you..
Click here to see answer by doukungfoo(195)

Question 104708: Need help with a GPA question
If a student has a cumulative (overall) GPA of 2.6 and receives a 4.0 for first semester senior year - what does the cumulative GPA move to??
thanks
DDC

Click here to see answer by scott8148(6628)

Question 104725: 1) 7 2/5% of x is equal to 74. Solve for x

2)48% of x=60. Solve for x.
Click here to see answer by elima(1433)

Question 104878: 60% of a student's final grade is equal to a 2.75 (averaged from four quizzes). The remaining 40% of the final grade is to be taken from the score received on a final exam. What score does the student need to get on the final exam in order to achieve an overall grade of 2.0 or better?
I couldn't figure this one out due to the weighted averages....
Click here to see answer by oberobic(2304)

Question 105450: 1) 3/16= (?)% x 3/4

2) 5.5/20%=

3) slove for N. N/3=6/9
I need help in trying to solve these probelms, thank you.
Click here to see answer by checkley75(3666)

Question 105863: 5 times a number, increased by 1, is 36. find the number?
I am not good with these can you help
Click here to see answer by ptaylor(2048)

Question 105865: 5 times a number, increased by 1, is 36. find the number?
I am not good with these can you help
Click here to see answer by scott8148(6628)

Question 105864: 5 times a number, increased by 1, is 36. find the number?
I am not good with these can you help
Click here to see answer by edjones(7569)

Question 107028: Plot points with coordinates (2, 3), (3, 4), and (4, 5) on the given graph. What do you
observe? Can you give the coordinates of another point with the same property?
I am just totally lost. Can anyone help me understand this?
Click here to see answer by scott8148(6628)

Question 107100: 2/3x+4=10 how do you solve this
Click here to see answer by tutorcecilia(2152)

Question 107185: An alloy of metals is 25% copper another alloy is 50% copper. How much of each alloy is used to make 1000 grams of an alloy with 45% copper.
Can you help us write this equations?
Click here to see answer by ankor@dixie-net.com(15645)

Question 108177: The average of four numbers is 18. If one of the four numbers, 25, is taken away, what is the average of the remaining three numbers?
Click here to see answer by edjones(7569)

Question 92806: what is mean and median
Click here to see answer by waiwai933(6)

Question 108704: I need help setting up an equation for the following question:
A 20L solution is 15% alcohol. How much water must be added to make it an 8% alcohol solution?
Click here to see answer by scott8148(6628)

Question 110437: 6(t + 3)+ 8 -5(t + 2)=
Click here to see answer by checkley71(8403)

Question 110435: 7 2/5 % of x is equal to 74
solve for x
Click here to see answer by MathLover1(6625)

Question 110433: 3/16 = (?) % x 3/4
Click here to see answer by checkley71(8403)

Question 110688: Adult tickets for a play cost $13 and child tickets cost $10. If there were 22 people at a performance and the theater collected $277 from ticket sales, how many adults and how many children attended the play?
Click here to see answer by scott8148(6628)

Question 111012: what is 3.75 rounded to the nearest tenth
Click here to see answer by checkley71(8403)

Question 112262: Angela's average for six math test is 87. On her first four test she had scores of 93, 87, 82, and 86. On her last test, she scores 4 points lower than she did on her fifth test.What scores did angela receive on her fifth and sixth tests/
Click here to see answer by scott8148(6628)

Question 112607: You have grades of 81, 99, 95, 75 and 85 in your history class. You want to have at least an average of 89 in the class by report card time. What must you average on the next four tests for this to happen?
Click here to see answer by SHUgrad05(58)

Question 113069: Find the average of the following numbers: 4/9, 2/3, 5/12, 5/36
Click here to see answer by checkley71(8403)

Question 113722: You drive home at an average speed of 30mph to get a take-out pizza in town. You drive back home on same route at an average speed of 60mph(you want to get home before the pizza cools off). What is your average speed for the entire round trip?
*(Hint: It is NOT 45mph, as your intuition might suggest.)
Click here to see answer by stanbon(57282)

Question 114153: A tire company wants to determine how quickly the tread on its tires wears down with average use. Let x represent the number of months the tire was used. Let y represent the thickness of the tire tread, in millimeters. An equation for a line of best fit is shown below.

Y=
- 5
__ x + 20
9

a. What is the slope of this line of best fit? What does the slope mean in the context of this problem?
b. Tina will need to replace her new tires when they have 5 millimeters of tire tread left. According to the line of best fit, for how many months can Tina drive before she needs to replace her tires? Use mathematics to explain how you determined your answer. Use words, symbols, or both in your explanation.

Click here to see answer by stanbon(57282)

Question 114271: Big Burger is giving away gold and silver coupons. the gold coupons are worth 15 points and the silver coupons are worth 10 points. Maddy is saving coupons so she can get free Super Big Burgers.
So far Maddy has 16 copupons worth 215 points. How many gold coupons and how many silver coupons does Maddy have?
Click here to see answer by stanbon(57282)

Question 114506: 9. The paired data below consist of the test scores of 6 randomly selected students and the number of hours they studied for a test. Find the value of the linear correlation coefficient, r.
Hours studied 5 10 4 6 10 9
Test score 64 86 69 86 59 87

Click here to see answer by stanbon(57282)

Question 114505: IQ scores have a normal distribution with a mean of 100 and a standard deviation of 15. What two IQs separate the middle 95 percent from the remainder of the distribution?

Click here to see answer by stanbon(57282)

Question 13052: i wanted to know how to do this problem but im not sure it go's in average
there are 5 times as many blue topaz gems as citrine gems;
2 times as many rubies as citrine gems;and
48 gems in all Rubies__
Topaz__
Citrine__
Click here to see answer by stanbon(57282)

Question 114498: Calculate the standard deviation for the following data set: 16, 35, 25, 29, 26, 30
Click here to see answer by Fombitz(13828)

Question 114746: IQ scores have a normal distribution with a mean of 100 and a standard deviation of 15. Out of a student body of 1800 students, how many would you expect to have an IQ above 120?

Click here to see answer by stanbon(57282)

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