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Tutors Answer Your Questions about Linear Algebra (FREE)
Question 155761: Hi, I'm having a difficult time with this words problem from chapter 1.5, i would really appreciate it if you can help me sove for it. Thanks.
11. A chess tutor charges a fee for the first lesson that is 1.5 times the fee for the later lessons. You spend $315 for 10 lessons. How much does the first lessons cost? How much does a later lesson cost?
Click here to see answer by ankor@dixie-net.com(6691)   |
Question 156606This question is from textbook Holt Algebra II
: Decode the following message. Each letter could be thought of as an integer on
the number line ( A=1,b=2 etc). If you arrange the letters so that all the
inequalities are true, the message will be clear.
S < R F < O R < L
T > S N > U C < H
L < U T < A N < C
H > L O < H U > A
Y < F Y > A R > O This question is from textbook Holt Algebra II
Click here to see answer by Edwin McCravy(2920)  |
Question 157043: Al makes $30 an hour. Bill makes $20 an hour. Bill joins Al on the job four hours after Al started. They finish the job, and the total cost for labor comes to $470. How many hours did each work?
By trial and error, I know that the number of hours is 11 for Al and 7 for Bill. I just need to show the work.
Al - 11 hours @ $30/hour = 330
Bill - 7 hours @ $20/hour = 140
Total = 470
Here is the equation that I came up with for figuring the number of hours each worked - where X=Al's hours and X-4 = Bill's hours. I'm fairly certain this equation is correct.
$470 = 30X + 20(x-4)
It's at this point that I get stuck. Any help would be greatly appreciated!
Click here to see answer by jojo14344(1483) |
Question 157043: Al makes $30 an hour. Bill makes $20 an hour. Bill joins Al on the job four hours after Al started. They finish the job, and the total cost for labor comes to $470. How many hours did each work?
By trial and error, I know that the number of hours is 11 for Al and 7 for Bill. I just need to show the work.
Al - 11 hours @ $30/hour = 330
Bill - 7 hours @ $20/hour = 140
Total = 470
Here is the equation that I came up with for figuring the number of hours each worked - where X=Al's hours and X-4 = Bill's hours. I'm fairly certain this equation is correct.
$470 = 30X + 20(x-4)
It's at this point that I get stuck. Any help would be greatly appreciated!
Click here to see answer by alan22153(1) |
Question 157344This question is from textbook 
: A teacher's union has negotiated a uniform salary increase for each year of service up to 20 years. If a teacher started at 27000 dollars and 4 years later had a salary of 33000 dollars, what function would describe the teacher's salary over time?This question is from textbook
Click here to see answer by checkley77(7035) |
Question 158113: A company place $1,000,000 in three different accounts. It placed part in short-term notes paying 4.5% peryear, twice as much in government bonds paying 5% per year, and the rest in utility bonds paying 4%. The income after one year is $45,500. How much did the company place in each account?
Click here to see answer by checkley77(7035) |
Question 158228This question is from textbook
: Construct the equation of a line that goes through the origin and is perpendicular to the given equation.
(a)y = 5
x = ?
(b)x = -7
y = ?
This question is from textbook
Click here to see answer by gonzo(654) |
Question 158844: a linear model for the total number y of a particular brand of television set sold over x years contains the points A(2, 2,600), B(5, 3,500) , and C(10, 5,000)
how mant television sets were sold after 2 years?
Click here to see answer by stanbon(26256) |
Question 159248: Seven years ago, Kodi found a box of old baseball cards in the garage. Since then, he has added a consistent number of cards to the collection each year. He had 52 cards in the colection after 3 years and now has 108 cards.
How many cards were in the original box?
Kodi plans to keep the collection for a long time. How many cards will the collection contain 10 years from now?
Write a rules that determines the number of cards in the collection after n years. What does each number in your rule represent?
Click here to see answer by ankor@dixie-net.com(6691) |
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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
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