Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 53668: Can someone help me on this problem?
I need to solve this literal equation for the indicated variable:
A = 1/2h (B + b) ( for b) , area of trapezoid
Thanks,
Sher
Click here to see answer by stanbon(75887)

Question 53675: please help me solve this equation (4y-9=15)
Click here to see answer by funmath(2933)

Question 53689: Find the x-intercepts of the parabola y=x squared + 2x -15.
Click here to see answer by stanbon(75887)

Question 53680: Can someone help me solve this problem?
I need to solve the following equation for x, and show proof:
7(3x + 4) = 8(2x + 5) + 13
Thanks,
Sher
Click here to see answer by stanbon(75887)

Question 53714: Can someone help me on this problem?
I need to solve the following word problem and need to show the equation you use for the solution.
Martina leaves home at 9 a.m., bicycling at a rate of 24 mi/h. Two hours later, John leaves driving at the rate of 48 mi/h. At what time will John catch up with Martina?
Thanks,
Ashley
Click here to see answer by stanbon(75887)

Question 53711: Can someone help me on this problem?
I need to solve the following word problem. I also need to show the equation you use for the solution.
A bicyclist rode into the country for 5 h. In returning, her speed was 5 mi/h faster and the trip took 4 h. What was her speed each way?
Thanks,
Ashley
Click here to see answer by stanbon(75887)

Question 53715: What is 26 = 6(5 - a)? I did:
6(5 - a)= 26
6a + 21 = 26
6a = 5
6a = 5 divided both side by 6
a = 0.83
Am I right?
If not can you explain to me and show me the steps?
How you got the answer and so on.
Click here to see answer by stanbon(75887)

Question 53720: What is 48 = 8(x + 2)?
Click here to see answer by rchill(405)

Question 53770: A bamboo tree grew 3 in. per day .Write and solve and equation to find how many days d it took the tree to grow 144 in.
equation____________ Soultion_________________

For what values of y is each equation:
-5|y|= -25

Click here to see answer by AnlytcPhil(1806)

Question 53780: Can someone help me on this problem?
A common mistake when solving equations is the following:
The equation: 2(x-2) = x + 3
First step in solving: 2x - 2 = x + 3
I need to write a clear explanation of what error has been made. What could be done to avoid this error?
Thanks,
Sherry
Click here to see answer by venugopalramana(3286)

Question 53776: Can someone help me on this problem?
I need to solve the following equation for x, and show proof.
3x - 5(3x -7) = 2(x+9) + 45
Thanks,
Sher
Click here to see answer by jenrobrody(19)

Question 53716: Can someone help me on this problem?
I need to solve the following word problem and need to show the equation you use for the solution.
There are 850 Douglas fir and ponderosa pine trees in a section of forest bought by Sawz Logging Co. The company paid an average of $300 for each Douglas fir and $225 for each ponderosa pine. If the company paid $217,500 for the trees, how many of each kind did the company buy?
Thanks, Ashley
Click here to see answer by venugopalramana(3286)

Question 53713: Can someone help me on this problem?
I need to solve the following word problem and I need to show the equation you use for the solution.
A bus leaves a station at 1 p.m. traveling west at an average rate of 44 mi/h. One hour later a second bus leaves the same station, traveling east at a rate of 48 mi/h. At what time will the two buses by 274 mi apart?
Thanks, Ashley
Click here to see answer by venugopalramana(3286)

Question 53681: Can someone help me on this problem?
I need to solve the following equation for x, and show proof:
2(x-3) - 3(x + 5) = 3(x-2) - 7
Thanks,
Sher
Click here to see answer by ankor@dixie-net.com(22740)

Question 53826: 2x=7x+10
Click here to see answer by checkley71(8403)

Question 53815: solve the equation: -10=-6+x
Click here to see answer by checkley71(8403)

Question 53812: simplify first and then solve the equation: x-(-6)=-4
Click here to see answer by checkley71(8403)

Question 53836: I am trying to help my daughter and it has ben 27 years since i had algebra.
my questin is on solving equations and formulas.If i could get a small refresher on how to do this i may can remenber how to explan this to her. the problem is:
16z + 4x = y for x
If i could get a detailed walk through i can help her.
thank you.
Click here to see answer by checkley71(8403)

Question 53684: Can someone help me on this problem?
I need to solve the followig word problem. I also need to show the equation you use for the solution.
The length of a rectangular playing field is 5 ft. less than twice its width. If the perimeter of the playing field is 230 ft., find the length and width of the field.
Thanks,
Ashley
Click here to see answer by ankor@dixie-net.com(22740)

Question 53848: Hi i am trying to do my algebra homework, and i am having the biggest problem ever I have no idea how to do the problem.
THis is the problem:
d=rt for r
Click here to see answer by aaaaaaaa(138)

Question 53855: Hi i need help on my homework.
The problem is:
d=rt for r
Would you pleaseeeee send me a soulution in detail
thanks alot,
softballcutie
Click here to see answer by checkley71(8403)

Question 53788: Can someone help me on this problem?
I need to solve the following equation for x, and show proof:
2(x-3) - 3(x + 5) = 3(x-2) - 7
Thanks,
Ashley
Click here to see answer by checkley71(8403)

Question 53859: Hi I really need help i have a huge problem and i was wondering if you could help me. My problem is in Algebra.
Here is the question:
A=h(a+b)/2 solve for h
THanks alot
Click here to see answer by checkley71(8403)

Question 53864: i need help on my math homework.
Here is the problem:
The surface area of a rectangulare solid is given by the formula
S= 2lw+2lh+2wh, where l=length, w=width, and h=height.
A. Solve the formula for h.
B. The surface area of a rectangular solid with length 6 centimeters and width 3 centimeters is 72 square centimeters. Find the height.
Thanks.
softballcutie
Click here to see answer by Nate(3500)

Question 53867: i need help on my math homework.
Here is the problem:
The surface area of a rectangulare solid is given by the formula
S= 2lw+2lh+2wh, where l=length, w=width, and h=height.
A. Solve the formula for h.
B. The surface area of a rectangular solid with length 6 centimeters and width 3 centimeters is 72 square centimeters. Find the height.

Click here to see answer by Nate(3500)

Question 53683: Can someone help me with this problem?
I need to solve the following equation for x, and show proof:
3x - 5(3x -7) = 2(x +9) + 45
Thanks,
Ashley
Click here to see answer by checkley71(8403)

Question 53880: solve equation 12p=36 step-by-step
Click here to see answer by checkley71(8403)

Question 53888: Solve for z in the following problem:
9z+12=9(z+3)

Click here to see answer by stanbon(75887)

Question 53930: Can someone help me on this problem?
What is the algebriac equation for:
3 times a number divided the difference of b and 2
Thanks,
Sher
Click here to see answer by checkley71(8403)

Question 53945: Can someone help me on this problem?
I need to translate the following statement into inequalities. Let x represent the number.
2 times a number, increased by 28, is less than or equal to 6 times that number.
Thanks,
Sher
Click here to see answer by stanbon(75887)

Question 53954: Can someone help me?
What is the algebriac equation for:
5 times a number minus ten is equal to the sum of six and three
Thanks, Lisa
Click here to see answer by checkley71(8403)

Question 53953: Can someone help me on this?
What is the algebriac equation for:
A number less then 50 is 30
Thanks, Lisa
Click here to see answer by checkley71(8403)

Question 53957: 18=v divide by -1.8

Click here to see answer by checkley71(8403)

Question 53934: Can someone help me on this problem?
What is the algebriac equation of:
A number less than 50 is 30
Thanks,
Sher
Click here to see answer by Nate(3500)

Question 53955: My son's teacher game him this problem and i want to help him work throught. But I must first figure it out.
Here goes.
A teacher gives one second of math homework the first day of school. The second day 2 seconds, the third day 4 seconds and so on. How many seconds of homework will the student have on the 36th day of school?
Click here to see answer by Nate(3500)

Question 53973: How do I write this question in an equation Find two numbers whose sum is 55 if the second is 7 more than 5 times the first
Click here to see answer by rchill(405)

Question 53987: I am trying to help my daughter with homework. Since it has been many years I have forgotten how to do. How to i anwer this ...Seperate $89 into two parts so that the second part is $4less than twice the first part.
Click here to see answer by checkley71(8403)

Question 53988: What is 4n - 2n = 18?
Click here to see answer by checkley71(8403)

Question 53984: I am trying to help my daughter with homework. Since it has been many years I have forgotten how to do. How to i anwer this ...Seperate $89 into two parts so that the second part is $4less than twice the first part.
Click here to see answer by stanbon(75887)

Question 53775: Can someone help me on this problem?
I need to solve the following equation for x, and show proof.
2(x-3) -3(x+5) = 3(x-2) -7
Thanks,
Sher
Click here to see answer by checkley71(8403)

Question 53997: What is 2(8 + p) = 22?
Click here to see answer by rchill(405)

Question 54006: What is 26 = 6(5 - a)? I did:
26 = 30 - 6a
-30 -30
-4 = -6a
a = 2/3
Am I'm right?

Click here to see answer by rchill(405)

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30331..30375, 30376..30420, 30421..30465, 30466..30510, 30511..30555, 30556..30600, 30601..30645, 30646..30690, 30691..30735, 30736..30780, 30781..30825, 30826..30870, 30871..30915, 30916..30960, 30961..31005, 31006..31050, 31051..31095, 31096..31140, 31141..31185, 31186..31230, 31231..31275, 31276..31320, 31321..31365, 31366..31410, 31411..31455, 31456..31500, 31501..31545, 31546..31590, 31591..31635, 31636..31680, 31681..31725, 31726..31770, 31771..31815, 31816..31860, 31861..31905, 31906..31950, 31951..31995, 31996..32040, 32041..32085, 32086..32130, 32131..32175, 32176..32220, 32221..32265, 32266..32310, 32311..32355, 32356..32400, 32401..32445, 32446..32490, 32491..32535, 32536..32580, 32581..32625, 32626..32670, 32671..32715, 32716..32760, 32761..32805, 32806..32850, 32851..32895, 32896..32940, 32941..32985, 32986..33030, 33031..33075, 33076..33120, 33121..33165, 33166..33210, 33211..33255, 33256..33300, 33301..33345, 33346..33390, 33391..33435, 33436..33480, 33481..33525, 33526..33570, 33571..33615, 33616..33660, 33661..33705, 33706..33750, 33751..33795, 33796..33840, 33841..33885, 33886..33930, 33931..33975, 33976..34020, 34021..34065, 34066..34110, 34111..34155, 34156..34200, 34201..34245, 34246..34290, 34291..34335, 34336..34380, 34381..34425, 34426..34470, 34471..34515, 34516..34560, 34561..34605, 34606..34650, 34651..34695, 34696..34740, 34741..34785, 34786..34830, 34831..34875, 34876..34920, 34921..34965, 34966..35010, 35011..35055, 35056..35100, 35101..35145, 35146..35190, 35191..35235, 35236..35280, 35281..35325, 35326..35370, 35371..35415, 35416..35460, 35461..35505, 35506..35550, 35551..35595, 35596..35640, 35641..35685, 35686..35730, 35731..35775, 35776..35820, 35821..35865, 35866..35910, 35911..35955, 35956..36000, 36001..36045, 36046..36090, 36091..36135, 36136..36180, 36181..36225, 36226..36270, 36271..36315, 36316..36360, 36361..36405, 36406..36450, 36451..36495, 36496..36540, 36541..36585, 36586..36630, 36631..36675, 36676..36720, 36721..36765, 36766..36810, 36811..36855, 36856..36900, 36901..36945, 36946..36990, 36991..37035, 37036..37080, 37081..37125, 37126..37170, 37171..37215, 37216..37260, 37261..37305, 37306..37350, 37351..37395, 37396..37440, 37441..37485, 37486..37530, 37531..37575, 37576..37620, 37621..37665, 37666..37710, 37711..37755, 37756..37800, 37801..37845, 37846..37890, 37891..37935, 37936..37980, 37981..38025, 38026..38070, 38071..38115, 38116..38160, 38161..38205, 38206..38250, 38251..38295, 38296..38340, 38341..38385, 38386..38430, 38431..38475, 38476..38520, 38521..38565, 38566..38610, 38611..38655, 38656..38700, 38701..38745, 38746..38790, 38791..38835, 38836..38880, 38881..38925, 38926..38970, 38971..39015, 39016..39060, 39061..39105, 39106..39150, 39151..39195, 39196..39240, 39241..39285, 39286..39330, 39331..39375, 39376..39420, 39421..39465, 39466..39510, 39511..39555, 39556..39600, 39601..39645, 39646..39690, 39691..39735, 39736..39780, 39781..39825, 39826..39870, 39871..39915, 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