Tutors Answer Your Questions about Miscellaneous Word Problems (FREE)
Question 55717: I got this really strange problem! It says: The combined resistance of two resistors R1 and R2 in a parallel circuit is given by the formula
Rr= 1
----
1/R1+1/R2 Simplify the formula.
(the 1 and the two are tiny and sit down on the right of the R's)
Well I ended up with
Rr= 1
----
2/R1+R2
Would this be correct or is there a different way to do this?
Thanks so much!!!
ac
Click here to see answer by stanbon(75887)  |
Question 56077: The rectangle ABCD is inscribed in the circle with center(0,0) and radius 6. The x-coordinate of the vertex A is expressed as x. (Shows a diagram with an x and y axis. A circle, with a square inside it where each of the 4 corners of the square touches the circle. And a point A at the top right corner labeled as point A (x,y). Where A is the vertex.)
Then express the area S of the rectangle ABCD as a function of x in the form: A(x) = b*x*sqr(c-x^2)
Where b and c are coefficients.
I have tried area=base*height which gives the formula area= x^2+Y^2=12^2. I just am not sure where to go from here or if I am even on the right track.
Click here to see answer by venugopalramana(3286) |
Question 56289: Swimming space
The length of a rectangular swimming pool is 2x – 1 meters, and the width is x + 2 meters. Write a polynomial that represents the area. Find the area if x is 5 meters.
i have a hard time with word problems
Click here to see answer by stanbon(75887) |
Question 56291: Square lot
Sam lives on a lot that he thought was a square, 157 feet by 157 feet. When he had it surveyed, he discovered that one side was actually 2 feet longer than he thought and the other side was actually 2 feet shorter then he thought. How much area does he have?
Click here to see answer by stanbon(75887) |
Question 56292: Please can anyone please help?
Compounded semiannually
P dollars is invested at annual interest rate r for 1 year. If the interest is compounded semiannually, then the polynomial P (1 + r/2)^2 represented the value of the investment after 1 year. Rewrite this expression with out parentheses. Evaluate the polynomial if
p = $200. and r = 10 %
Click here to see answer by stanbon(75887) |
Question 56339: McGraw Hill 6th edition, 8.3 # 58.
Thank you so very much for your time!!!!
The length of a rectangle is 2 inches more than twice its width. If the perimeter of the rectangle is 34, find the dimensions of the rectangle.
Click here to see answer by stanbon(75887) |
Question 56337: In a town election the winning candidate had 220 more votes than the loser. If 810 votes were cast in all, how many votes did each candidate recieve?
McGraw Hill 6th edition, 8.3 # 56.
Thank you so very much for your time!!!!
Click here to see answer by stanbon(75887) |
Question 56288: please help i do not know how to convert this problem.
Perimeter of a rectangle
The width of the rectangular play ground is 2x-5 feet, and the length is 3x+9 feet. Write a polynomial p(x) that represents the perimeter and then evaluate this perimeter polynomial if x is 4 feet.
Click here to see answer by Cintchr(481) |
Question 56439: The dreaded word problem. any help? thanks!
Two hikers start from the same point and hike in opposite directions around a lake. The shoreline is 21 miles. One hiker walks .5 pmh fast than the other hiker. How fast did each hiker walk if they meet in 3 hours?
Click here to see answer by funmath(2933) |
Question 56428: I need assistance in setting this up and solving. Thanks
Elevation E, in meters, above sea leve at which the boiling point of water is
t degrees Celsius is given by the formula
E=1000(100-t) + 580(100-t)^2
At what elevation is the boing point 99.2 degrees Celsius?
again thank you!
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 56473: can somw one help??? thank you
90. CD rollover
Ronnie invested p dollars in a 2 year CD with the annual rate of return of r. After the CD rolled over three times, its value was p (1+r) ^2) ^3. Which law of exponents can be used to simplify the expression? Simplify it.
Click here to see answer by stanbon(75887) |
Question 56476: i do nto know how to answer sphere let alone find the radus is there any easy whay to find this
130.
Radius of a sphere
The radius of sphere is given by the formula r=(0.75v/pie)^1/3
Where v is it’s the volume. Find radius of a spherical tank that has a volume of 32pie/3 cubic meters
Click here to see answer by stanbon(75887) |
Question 56474: i need a lot of help with this one thank you in advance you tutors are wounderful
4. Four coins
Place four coins on a table with heads facing downward. On each move you must turn over exactly three coins. Count the number of moves it takes to get all four coins with heads facing upward. What is the minimum number of moves necessary to get all four heads facing upward?
Click here to see answer by stanbon(75887) |
Question 56595: Hans paid $1.50 each for programs to the game. He sold all but 20 of them for $3.00 each and made a profit of $15.00. How many programs did he buy?
I tried the equation: 1.50x + 3(x-20)=15.00
I don't think this is right? Can you help me? Thank You.
The ISBN number that I typed is exactly correct.
Click here to see answer by checkley71(8403) |
Question 56595: Hans paid $1.50 each for programs to the game. He sold all but 20 of them for $3.00 each and made a profit of $15.00. How many programs did he buy?
I tried the equation: 1.50x + 3(x-20)=15.00
I don't think this is right? Can you help me? Thank You.
The ISBN number that I typed is exactly correct.
Click here to see answer by BGluvsmath(64) |
Question 56613: Hi, Can you please me solve this problem thank you very much.
The question is:
A building hold 80 apartments. Une bedroom apartment cost $850/month. A two bedroom apartment cost 1050/month. The location itself cost 78 200/month. How many one bedrooms and two bedrooms are in this building?
Thank you again.
-kim
Click here to see answer by checkley71(8403) |
Question 56613: Hi, Can you please me solve this problem thank you very much.
The question is:
A building hold 80 apartments. Une bedroom apartment cost $850/month. A two bedroom apartment cost 1050/month. The location itself cost 78 200/month. How many one bedrooms and two bedrooms are in this building?
Thank you again.
-kim
Click here to see answer by stanbon(75887) |
Question 56627: Hi, Can you please me solve this problem thank you very much.
The question is:
A building hold 80 apartments. Une bedroom apartment cost $850/month. A two bedroom apartment cost 1050/month. The location itself cost 78 400/month. How many one bedrooms and two bedrooms are in this building?
Thank you again.
-kim
I am asking this question again because i wrote in the wrong amount instead of 78 200 , the actual amount is 78 400
thank you
Click here to see answer by wgomero(28) |
Question 56580: Assume the cost of a company picnic is described by the function
P(n)=(1/2)n^2-10n +80
where n represents the number of employees and family members attending the picnic and P (in dollars) represents the cost of the picnic. How many employees and guests in attendance produce a Minimum Cost? What is the Minimum cost for this event?
Click here to see answer by stanbon(75887) |
Question 56776: Thank you very much for all you do to help those who struggle!
19. Adult tickets for a play cost $15 and child tickets cost $12. If there were 26 people at a performance and the theater collected $336 from ticket sales, how many adults and how many children attended the play?
Click here to see answer by stanbon(75887) |
Question 56777: 20. The length of a rectangle is 8 in. more than twice its width. If the perimeter of the rectangle is 64 in., find the width of the rectangle.
A) 7 in.
B) 8 in.
C) 9 in.
D) 10 in.
Thank you very much for all you do to help those who struggle!
Click here to see answer by stanbon(75887) |
Question 56777: 20. The length of a rectangle is 8 in. more than twice its width. If the perimeter of the rectangle is 64 in., find the width of the rectangle.
A) 7 in.
B) 8 in.
C) 9 in.
D) 10 in.
Thank you very much for all you do to help those who struggle!
Click here to see answer by tutorcecilia(2152)  |
Question 56765: 7. An airplane covered 11 miles of its route while decreasing its altitude by 29,000 feet. Find the slope of the airplane's line of descent. Round to the nearest hundredth. [Hint: 1 mi = 5280 feet.]
no book Thank you very much for all you do to help those who struggle!
Click here to see answer by Nate(3500) |
Question 56762: 4. One day, the temperature at 5:00 A.M. was 45°F, and by 1:00 P.M. the temperature was 61°F. What was the hourly rate of temperature change?
A) 1°F/h
B) 2°F/h
C) 3°F/h
D) 4°F/h
no book. Thanks so very much for your time!!!
Click here to see answer by Nate(3500) |
Question 56763: 5. Adult tickets for a play cost $5 and child tickets cost $1. If there were 20 people at a performance and the theater collected $92 from ticket sales, how many children attended the play?
A) 1 child
B) 2 children
C) 3 children
D) 18 children
no book Thanks so very much for your time!!!
Click here to see answer by ankor@dixie-net.com(22740) |
Question 56764: 6. Carla invested $14,000, part at 9% and part at 12%. If the total interest at the end of the year is $1,290, how much did she invest at 9%?
A) $1,000
B) $14,000
C) $13,000
D) $12,000
no book Thanks so very very much fro your time!!
Click here to see answer by checkley71(8403) |
Question 56899: 25. World Records in the 1500-m run. The formula
R = 0.075t +3.85
Can be used to predict the world record in the 1500-m run t years after 1930. Determine (in terms of an inequality) those years for which the world record will be less than 3.5 min.
49. Electrical Visits. Dot's electric made 17 customer calls last week and 22 calls this week. How many calls must be made next week in order to maintain an average of at least 20 for the three week period?
Click here to see answer by stanbon(75887) |
Question 56913: There were a number of bats in a case.
2 bats could see out of their right eye
3 bats could see out of their left eye
4 bats could not see out of their left eye
5 bats could not see out of their right eye
What is the least number of bats in the case?
What might their eyesight have been?
Were they totally blind or only blind in right or left eye?
_______________________________________________________________________________
My 1st step to solving the problem - 1 bat in each corner, facing that side of the box. I might have over analyzed the question because bats can see in the dark. It's the light that would render them blind. Now, my train of thought can't get pass this concept. Please help me with this algebra problem, am in the eighth grade. Thank you
Click here to see answer by Scriptor(36) |
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7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 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20746..20790, 20791..20835, 20836..20880, 20881..20925, 20926..20970, 20971..21015, 21016..21060, 21061..21105, 21106..21150, 21151..21195, 21196..21240, 21241..21285, 21286..21330, 21331..21375, 21376..21420, 21421..21465, 21466..21510, 21511..21555, 21556..21600, 21601..21645, 21646..21690, 21691..21735, 21736..21780, 21781..21825, 21826..21870, 21871..21915, 21916..21960, 21961..22005, 22006..22050, 22051..22095, 22096..22140, 22141..22185, 22186..22230, 22231..22275, 22276..22320, 22321..22365, 22366..22410, 22411..22455, 22456..22500, 22501..22545, 22546..22590, 22591..22635, 22636..22680, 22681..22725, 22726..22770, 22771..22815, 22816..22860, 22861..22905, 22906..22950, 22951..22995, 22996..23040, 23041..23085, 23086..23130, 23131..23175, 23176..23220, 23221..23265, 23266..23310, 23311..23355, 23356..23400, 23401..23445, 23446..23490, 23491..23535, 23536..23580, 23581..23625, 23626..23670, 23671..23715, 23716..23760, 23761..23805, 23806..23850, 23851..23895, 23896..23940, 23941..23985, 23986..24030, 24031..24075, 24076..24120, 24121..24165, 24166..24210, 24211..24255, 24256..24300, 24301..24345, 24346..24390, 24391..24435, 24436..24480, 24481..24525, 24526..24570, 24571..24615, 24616..24660, 24661..24705, 24706..24750, 24751..24795, 24796..24840, 24841..24885, 24886..24930, 24931..24975, 24976..25020, 25021..25065, 25066..25110, 25111..25155, 25156..25200, 25201..25245, 25246..25290, 25291..25335, 25336..25380, 25381..25425, 25426..25470, 25471..25515, 25516..25560, 25561..25605, 25606..25650, 25651..25695, 25696..25740, 25741..25785, 25786..25830, 25831..25875, 25876..25920, 25921..25965, 25966..26010, 26011..26055, 26056..26100, 26101..26145, 26146..26190, 26191..26235, 26236..26280, 26281..26325, 26326..26370, 26371..26415, 26416..26460, 26461..26505, 26506..26550, 26551..26595, 26596..26640, 26641..26685, 26686..26730, 26731..26775, 26776..26820, 26821..26865, 26866..26910, 26911..26955, 26956..27000, 27001..27045, 27046..27090, 27091..27135, 27136..27180, 27181..27225, 27226..27270, 27271..27315, 27316..27360, 27361..27405, 27406..27450, 27451..27495, 27496..27540, 27541..27585, 27586..27630, 27631..27675, 27676..27720, 27721..27765, 27766..27810, 27811..27855, 27856..27900, 27901..27945, 27946..27990, 27991..28035, 28036..28080, 28081..28125, 28126..28170, 28171..28215, 28216..28260, 28261..28305, 28306..28350, 28351..28395, 28396..28440, 28441..28485, 28486..28530, 28531..28575, 28576..28620, 28621..28665, 28666..28710, 28711..28755, 28756..28800, 28801..28845, 28846..28890, 28891..28935, 28936..28980, 28981..29025, 29026..29070, 29071..29115, 29116..29160, 29161..29205, 29206..29250, 29251..29295, 29296..29340, 29341..29385, 29386..29430, 29431..29475, 29476..29520, 29521..29565, 29566..29610, 29611..29655, 29656..29700, 29701..29745, 29746..29790, 29791..29835, 29836..29880, 29881..29925, 29926..29970, 29971..30015, 30016..30060, 30061..30105, 30106..30150, 30151..30195, 30196..30240, 30241..30285, 30286..30330, 30331..30375, 30376..30420, 30421..30465, 30466..30510, 30511..30555, 30556..30600, 30601..30645, 30646..30690
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