Questions on Algebra: Equations answered by real tutors!

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Question 385741: Equation of a circle if I have P (-5,2) and Q (3,-8) I have it figured as -1, -3
then r= square root of (-1-3)^2 + (-3+8)^2 = sqaure root 41 so the equation of the circle would be (x+1)^2 + (y+3)^2 = 41.
But thing seems a miss.... could you look this over for me? Thanks
Melody
Click here to see answer by robertb(5830)

Question 385789: 5x+1=6
Click here to see answer by jim_thompson5910(35256)

Question 385890: Find the center and the radius of the following: x^2 - 6x + y^2 + 10y + 25 = 3
Click here to see answer by mananth(16946)

Question 385935: how do I make this exercise -5n-8(1+7n)=-8
-8(-8x-6)=-6x-22
Click here to see answer by mananth(16946)

Question 385936: simplify please be sure to show all of your work
8-5/8+1/2*6/9
Click here to see answer by Alan3354(69443)

Question 386036: Solve the equation and state the restriction(s)
2 over x = 5 over 2x-8
Click here to see answer by ewatrrr(24785)

Question 386043: the sales tax is 7%. If the total cost of a book (including tax) is $45.99, what is the price of the book before tax?
Click here to see answer by nerdybill(7384)

Question 386034: Help me solve by defining a variable, writing an equation, and solving
A 10-foot ladder is set 6 feet from the base of the wall. How far up the wall will the ladder reach?
Click here to see answer by nerdybill(7384)

Question 386089: I need help solving the equation of 3x+2 1 -2
____ + _ = ___
x-2 x x2-2x
The answer key says the solution is -1, but i cant seem to figure it out.
please explain the answer to me. thank you

Click here to see answer by nerdybill(7384)

Question 386100: Write the slope-intercept form of the equation.
(5,2) and (0,-9)

Click here to see answer by Alan3354(69443)

Question 386100: Write the slope-intercept form of the equation.
(5,2) and (0,-9)

Click here to see answer by ewatrrr(24785)

Question 386186: What did i do wrong? My answer was 17 for the following expression: 4^3-(8x7)+5
Click here to see answer by ewatrrr(24785)

Question 386227: How do you find a in: 0.01a = 12
Click here to see answer by solver91311(24713)

Question 386197: system of equations
5x-2y=4
3x+y=9
the answer is in this form (?,?)
Click here to see answer by rfer(16322)

Question 386251: how do you factor 5xsqaure-5
Click here to see answer by stanbon(75887)

Question 386368: Please help me solve this word problem of two linear equations in two unknowns....word problem:
The sum of 2 numbers is 87. If twice the smaller number is subtracted from the larger number, the result is 12. Find the two numbers.
I tried:
x+y=87
2x-y=12......this equation doesnt work for the answers....What am I doing wrong?
the answer is .....62 for the larger...25 for the smaller
Click here to see answer by mananth(16946)

Question 386467: Solve for X.
[(x+4)/5]-[(x+2)/3]>1/2
Click here to see answer by Fombitz(32388)

Question 386475: Simplify.
(9+2i) / (5-6i)
Click here to see answer by Fombitz(32388)

Question 386470: The difference of two numbers (i.e., bigger minus the smaller) is 4. If twice the smaller plus three times the larger is 52, what are the two numbers?
Click here to see answer by Alan3354(69443)

Question 386753: If two consecutive even numbers are such that 5/6 of the reciprocal of one is
equal to the reciprocal of the other. Find the two even numbers.

Click here to see answer by mananth(16946)

Question 386778: ALGEBRA 1
Write in standard form: y+6=9/10(x+20)
Click here to see answer by mananth(16946)

Question 386781: How do I figure out 3 X 7(to the 10th meter)?
Click here to see answer by stanbon(75887)

Question 386777: ALGEBRA 1
Write in standard form: y+5=4/5(x+20)
Click here to see answer by mananth(16946)

Question 386786: At a party 1/4 of the people are children. There is 1/2 as many men as women,
and 15 more women than children. If the total number of people is x, form an
equation in x and solve.

Click here to see answer by mananth(16946)

Question 386804: The question as stated: Last summer, Gary trained 32 more dogs than Zina. Together they trained 126 dogs. How many dogs did Gary train?
Click here to see answer by solver91311(24713)

Question 386813: Julius sold five times as many computers as Sam sold last year. In total, they sold 78 computers. How many computers did Julius sell?
Click here to see answer by rfer(16322)

Question 386866: The peak rate of a phone company is 26� per minute, and the off-peak rate is 13� per minute. Find the savings for a 15-minute phone call if it was made during off-peak time as opposed to peak time.
Click here to see answer by robertb(5830)

Question 386846: x-(-3)=-5
Click here to see answer by zf(2)

Question 386838: Andre hit four more homeruns than twice the number of home runs Larry hit. Together they hit 10 home runs. How many home runs did Andre hit?
Click here to see answer by rfer(16322)

Question 386937: Translate the following statement into an algebraic equation Let x represent the number
1 less than 15 times a number is 9 times that same number
Click here to see answer by mananth(16946)

Question 386941: The base of an isosceles triangle is 1 in. less than the length of one of the equal sides If the perimeter of the triangle is 20 inches find the length of each of the sides
Click here to see answer by mananth(16946)

Question 386919: At 9:00 a.m. a truck leaves the truck yard and travels west at a rate of 35 mi/hr two hours later a second truck leaves the same route traveling at 70 mi/hr When will the second truck catch up to the first
Click here to see answer by mananth(16946)

Question 386969: Simplify:
18-2y^2/y^2-8y+15
Click here to see answer by stanbon(75887)

Question 386915: A company estimates that 5% of the parts they manufacture are defective if 8 defective parts are found one week by the quality testers how many parts were manufactured that week
Click here to see answer by Fombitz(32388)

Question 386982: I'm having trouble understanding how to simplify the equation 2x/9x^2-8/3x+5
can you help me?
Click here to see answer by ewatrrr(24785)

Question 387053: The sum of three-fiths of a number and eight is two. Find the number?
Click here to see answer by ewatrrr(24785)

Question 387095: Can you please help me with these problems, I am studying for my algebra exam and there are few things that i dont know how to do. If you could help it means a world to me. Thank you so much!
A=1/2bh Solve for b
F=5/9C+32 Solve for C
Can you please help me with Graphing Peace wise functions too.
1/2x+3/2 if x<1
-x+3 if x >1

I know its impossible to graph in here so it will be very nice if you just tell me how you solved it, because i kind of know how to graph it,

Thank you so much!

Click here to see answer by edjones(8007)

Question 387109: what is the factored form of 4k^3-13k^2-12k
Click here to see answer by jim_thompson5910(35256)

Question 387109: what is the factored form of 4k^3-13k^2-12k
Click here to see answer by tara0066(31)

Question 387240: i'm confused how to do this problem. please help
49 a⁴ - 9 b� Factor completely:
Click here to see answer by edjones(8007)

Question 387240: i'm confused how to do this problem. please help
49 a⁴ - 9 b� Factor completely:
Click here to see answer by robertb(5830)

Question 387240: i'm confused how to do this problem. please help
49 a⁴ - 9 b� Factor completely:
Click here to see answer by nerdybill(7384)

Question 387464: Please help me solve. solve by the elimination method. 5x+6y=-22
x=7-5y
Click here to see answer by Alan3354(69443)

Question 387464: Please help me solve. solve by the elimination method. 5x+6y=-22
x=7-5y
Click here to see answer by rfer(16322)

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, 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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