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Tutors Answer Your Questions about Expressions-with-variables (FREE)
Question 53377: Linae, the Kougra from Shenkuu, went shopping for Kou-jong tiles at the local toy shop the other day. The kou-jong tiles were on sale for only 28 Neopoints each.
However, she got it in her head that, for good luck, the total amount of Neopoints she must spend must be a number where all of the digits are the same.
With that in mind, what is the minimum number of tiles she must buy?
Please help, I cant figure this out!
Click here to see answer by rapaljer(3611)   |
Question 53606: I am unsure on how to do this problem.
Use the arithmetic sequence of numbers 1, 3, 5, 7, 9,…to find the following:
a) What is d, the difference between any 2 terms?
b) Using the formula for the nth term of an arithmetic sequence, what is 101st term?
c) Using the formula for the sum of an arithmetic series, what is the sum of the first 20 terms?
d) Using the formula for the sum of an arithmetic series, what is the sum of the first 30 terms?
e) What observation can you make about these sums of this series (HINT: It would be beneficial to find a few more sums like the sum of the first 2, then the first 3, etc.)? Express your observations as a general formula in "n."
Thanks for your time!
Click here to see answer by stanbon(26259) |
Question 53616: I don't know how to solve this problem. The wording is confusing for me.
A traveling salesman (selling shoes) stops at a farm in the Midwest. Before he could knock on the door, he noticed an old truck on fire. He rushed over and pulled a young lady out of the flaming truck. Farmer Brown came out and gratefully thanked the traveling salesman for saving his daughter’s life. Mr. Brown insisted on giving the man an award for his heroism.
So, the salesman said, “If you insist, I do not want much. Get your checkerboard and place one penny on the first square. Then place two pennies on the next square. Then place four pennies on the third square. Continue this until all 64 squares are covered with pennies.” As he’d been saving pennies for over 25 years, Mr. Brown did not consider this much of an award, but soon realized he made a miscalculation on the amount of money involved.
a) How much money expressed in dollars would Mr. Brown have to put on the 32nd square?
b) How much money expressed in dollars would the traveling salesman receive in total if the checkerboard only had 32 squares?
c) Calculate the amount of money necessary to fill the whole checkerboard (64 squares). How money expressed in dollars would the farmer need to give the salesman?
Thanks for your time!
Click here to see answer by venugopalramana(3286)  |
Question 53686: I don't know what to do first in solving this word problem. It's really confusing me.
"You jog at a speed of 6 miles per hour for 20 minutes, and you walk at a speed of 4 miles per hour for t minutes. If your combined jogging and walking distance is 3 miles, for how long did you walk?"
Click here to see answer by stanbon(26259) |
Question 53742: I don't understand how you do this problem. The perimeter of a rectangle is 24 inches. Find the dimensions if its length is 3 inches greater than its width.
Will you please just put this problem in numbers and letters not words? Thanx
Click here to see answer by aaaaaaaa(138) |
Question 53871: I have to do the following problem and I'm not sure if I have it correct.
Which of the following is not an expression A)x + 2y, B)a + b + c, C)4(y+1) or D)ab = 6. I want to say that it is C) because it has only one variable. Is this correct?
Click here to see answer by stanbon(26259) |
Question 53871: I have to do the following problem and I'm not sure if I have it correct.
Which of the following is not an expression A)x + 2y, B)a + b + c, C)4(y+1) or D)ab = 6. I want to say that it is C) because it has only one variable. Is this correct?
Click here to see answer by Nate(3495) |
Question 53872: I have to do the following problem and I'm not sure if I have it correct.
Evaluate 8 + 2 x 5 - 24 /6 x 2
This is what I have done: 8 + 2 x 5 - 4 x 2
8 + 10 -4 X 2
8 + 10 - 8
18 - 8 = 10
So my answer is 10. Is this correct? Please Help!
Click here to see answer by Nate(3495) |
Question 53870: I have to do the following problem and have no clue where to start. lease Help!!! Evaluate the following expression if x = 1.07, y= -4.12 and z = -3.76. Round your answer to the nearest tenth.
z2(2is an exponent)/ xy
Click here to see answer by stanbon(26259) |
Question 53875: I have to do the following problem and I'm not sure if I have it correct.
Is -4 a solution to the equation 7x - 5 + 3x = 6 + x - 10
This is what I have done:7(-4) - 5 + 3 (-4) = 6 + (-4) - 10
28 - 5 + -12 = 10 - 10
23 + -12 = 10 - 10
-11 = 0
So my answer is No. Is this correct? Please Help!!!!
Click here to see answer by checkley71(8405) |
Question 53967: ok. the problem is y=2/3x-2. i need to find the slope, and name the y intercept. then i need to fill in a table of values that had a column for x containing -1, 0, and 1. i fill in the y colunm. then i need to graph the line on a coordinate plane. my problem is i dont know how to find the slope of that line.
Click here to see answer by rchill(405) |
Question 53426This question is from textbook Glencoe Algebra 1
: Please help to explain how to solve this problem:
Name each property used in each step:
26* 1 - 6 + 5 (12/4 - 3) = 26 * 1 - 6 + 5(3-3)
= 26 * 1 - 6 + 5 (0)
= 26 - 6 + 5(0)
= 26 - 6 + 0
= 20 + 0
= 20
I miss some classes last week and I am having trouble understanding this.
ThanksThis question is from textbook Glencoe Algebra 1
Click here to see answer by funmath(2873) |
Question 54175: Akay How do I set this up when :
p(x) = x^2 -x-5 and r(x) = 2x-1, evaluate (r o p)(6)
The o in the (rop) is a small funny oval shape symbol that I don't understand what it means? Thanks for any help.
Click here to see answer by funmath(2873) |
Question 54281: Sue worked 7 hours more than twice the number of hours worked by Jim. The total number of hours worked by both of the is 49. Find the number of hours worked by each.
How many ounces of a 15% alcohol solution must be mixed with 4 ounces of a 20% alcohol solution to make a 17% alcohol solution?
How much candy costing $2.50 per pound must be mixed with candy costing $3.50 per pound to create 100 pounds of mixed candy selling at $2.90?
You inherit $16,000 and invest in two stocks that pay 6% and 8% annual interest. If the total interest is $1180, how much is invested at each rate?
The sum of two consecutive odd integers is 40 Find the integers
Train A leaves Station A traveling at 40 mph at the same time that Train B leaves Station B at 60 mph. If Station A and Station B are 325 miles apart and the trains are traveling toward each other, how many hours is it before the two trains meet? How far are they from Station B when they meet?
Please, If you could show me how to identify the variables, write an equation and solve the equation
Click here to see answer by Nate(3495) |
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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, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670
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