Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 234055: Please help me to solve the system: r+d=9
r-d=-5

Click here to see answer by stanbon(75887)

Question 234056: Which of the following pairs of equations has no solution? A}k+2j=6,k-2j=4
B}k+2j=6,k+2j=4
C}k+2j=6,k+4j=12
d}k+2j=6,k-4j=12
Click here to see answer by stanbon(75887)

Question 234054: Please help me to solve this equation 7n-2g=1,g=3n
Click here to see answer by nerdybill(7384)

Question 234066: solve by the substitution method
4m+n=17
m-2n=20
Click here to see answer by rfer(16322)

Question 234250: What positive integers satisfy -2 less than or equal to 3x - 4 less than or equal to 7?
I have solved the problem this way:
3x = 7 + 4
x = 11/3 Answer.
Am I right with my solution and answer. Please show me the correct solution and answer. Thank you very much and God bless.
Click here to see answer by rfer(16322)

Question 234309: Three sides of a triangle are represented by x,x+3 and x+5. The perimeter
of the triangle is 35 units. Solve for x
Click here to see answer by checkley77(12844)

Question 234345: 4x/5+3/2=2x
How do you work out this problem?
I just can't seem to get it.
1/6-x/2=x-5/3
I don't understand this one either...please help me.
Click here to see answer by stanbon(75887)

Question 234321: I e-mailed Sanbon earlier and I forgot to ask how you write the question
in equation form or formulas either way. The problem was:
The area of a rectangle is 1260 square inches. It's length is 36 inches
find the width.
Please help....Thanks. Dee
Click here to see answer by Alan3354(69443)

Question 234440: determine whether the equation defines y as a function of x
Click here to see answer by solver91311(24713)

Question 234498: What is the translation of the statement"w is greater than -3 and less than 4"?

A}-3 B}-3>w>4
C}-34
D}-3>w<4
Click here to see answer by Theo(13342)

Question 234497: What is the translation of the statement"w is greater than -3 and less than 4"?

A}-3 B}-3>w>4
C}-34
D}-3>w<4
Click here to see answer by checkley77(12844)

Question 234530: Previous one had an error...sorry....
FACTORING: I really need help here. I just can't get the factoring for some reason. If someone could help me in a step by step format so that I could get it I'd REALLY REALLY APPRECIATE IT. I thought I had the GCF for the first one as 7x^7 but when I went to check it didn't work out with 35x^7 unless I did something wrong. With the second one, I got confused when the textbook was showing the switching of the variables.

#1 Factor completely and if it's a prime, state that it's a prime:
7x^9 - 28x^8 - 35x^7

#2 Same directions
10s^2 + 4st - 6t^2
Click here to see answer by stanbon(75887)

Question 234631: how do you solve y/32 = 5/-8
Click here to see answer by stanbon(75887)

Question 234638: Solve an equation using the expressions and show that each angle measures 40
Click here to see answer by solver91311(24713)

Question 234667: Need to write an equation and draw a diagram for this problem
drove 842 miles in 2 days. Second day drive 24 more miles then first day, how many miles were driven on each day?
Click here to see answer by solver91311(24713)

Question 234693: A cashier's drawer has some $5 bills, some $10 bills, and some $20 bills. There are 15 bills worth a total of $185. How many $5 bills, $10 bills, and $20 bills are there?
Click here to see answer by josmiceli(19441)

Question 234657: On a farm with chickens and cows, Mr. Brown counted 36 heads and 96 legs. How many chickens and cows were there?
Equation 1:
Equation 2:
Solution:
Click here to see answer by chibisan(131)

Question 234744: 6x-4(2x+1)=12
Click here to see answer by rfer(16322)

Question 234749: 6(t+7)-20=6t
Click here to see answer by user_dude2008(1862)

Question 234755: 4x+3-2x=2x+7
Click here to see answer by checkley77(12844)

Question 234771: 3y-2(3y+2)=8
Click here to see answer by rfer(16322)

Question 234777: 3(x+1)=2x+7
Click here to see answer by Thelioness(3)

Question 234812: A carpet store advertises 16 square yards of carpeting for $300, which
includes the $60 installation charge. Which equation could be used
to determine gthe cost of one square yard of carpet X ?
a. 16X = 300 b. X + 60 = 300
c. 60X + 16 = 300 d. 16X + 60 = 300 What is the answer? How did you
arrive at answer?
Click here to see answer by checkley77(12844)

Question 234791: 3w-1-4w=4-2w
Click here to see answer by checkley77(12844)

Question 234823: please help me (x+3)(x+2)
Click here to see answer by Lady of the Sith(6)

Question 234823: please help me (x+3)(x+2)
Click here to see answer by MathTherapy(10551)

Question 231753: change 37.92 degrees to radian measure to the nearest thousandth
Click here to see answer by Alan3354(69443)

Question 234949: Please help me to solve this problem=
Stu lives on the top floor of an apartment building, and Hal lives on a lower floor. Hal's window is 1/4 as high as Stu's. Stu drops a stone from his window. Three seconds later, Hal drops a stone from his window. The two stones hit the ground simultaneously. How high is Stu's window from the ground?
Thank you for helping me to solve this problem.
Click here to see answer by Theo(13342)

Question 234965: 6(5+c)=5(c-4) solve for c
Click here to see answer by nyc_function(2741)

Question 234964: 22-42=4(x-1) solve for x
Click here to see answer by nyc_function(2741)

Question 234962: Ive been getting stuck on 4(3t+4)-20=3+5t solve for T
Click here to see answer by nerdybill(7384)

Question 235012: How much pure antifreeze must be added to 12 L of a 40% solution to obtain a 60% solution? (Remember that pure antifreeze is 100% = 1.)

Click here to see answer by josmiceli(19441)

Question 235061: Helping my daughter on Algebra. It's been 20 years.
1/2 x = 3 5/6
what is x, and how did you do it?
also, 2/3 x = 24
don't understand equation to get to x.
please help.
Click here to see answer by stanbon(75887)

Question 235109: what is the answer to x-y=-2?
Click here to see answer by solver91311(24713)

Question 235197: solve: -4 + x = 3x -6
Click here to see answer by mando271(42)

Question 235231: 7-2n=n-14
can you please explain how to solve
Click here to see answer by jim_thompson5910(35256)

Question 235231: 7-2n=n-14
can you please explain how to solve
Click here to see answer by mando271(42)

Question 235231: 7-2n=n-14
can you please explain how to solve
Click here to see answer by stanbon(75887)

Question 235231: 7-2n=n-14
can you please explain how to solve
Click here to see answer by MathPro(14)

Question 235227: I haven't ddone algebra in over 20 yrs. I'm sure this equasion is very simple but maybe with your help I can work my way through. (((-8+ 3x -7x =48 )))
Click here to see answer by mando271(42)

Question 235298: Rewrite so that y is a function of x
7x-4x+12=36-5y
In this equation I am trying to decide if I have to move the X to the right and the Y to left or not.
I did this and my answer is Y=-3x/5+24/5 but I am not sure if this is correct.
Please help!
Click here to see answer by jim_thompson5910(35256)

Question 235259: -2(9+3x)=6(2x+3)
Click here to see answer by jim_thompson5910(35256)

Question 235237: graph: 2x-3y=-3
Click here to see answer by jim_thompson5910(35256)

Question 235336: please SOLVE and CHECK this algebra problem : 3(x-5)+7=16
Click here to see answer by jim_thompson5910(35256)

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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, 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39916..39960, 39961..40005, 40006..40050, 40051..40095, 40096..40140, 40141..40185, 40186..40230, 40231..40275, 40276..40320, 40321..40365, 40366..40410, 40411..40455, 40456..40500, 40501..40545, 40546..40590, 40591..40635, 40636..40680, 40681..40725, 40726..40770, 40771..40815, 40816..40860, 40861..40905, 40906..40950, 40951..40995, 40996..41040, 41041..41085, 41086..41130, 41131..41175, 41176..41220, 41221..41265, 41266..41310, 41311..41355, 41356..41400, 41401..41445, 41446..41490, 41491..41535, 41536..41580