Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 263888: Solve the following problem. Keep in mind the suggestions we offered in this section.
How long will it take $3,100 to double itself if it is invested at 8% simple interest?
Click here to see answer by richwmiller(17219)

Question 263933: The height of a projectile fired vertically into the air at an initial velocity of 160 feet per second is a function of time, x, and is given by the equation
f(x) = 160x � 16x2
I need help finding the highest point reached by the projectile. I just have no idea how to work this equation in order to do this.
Your help would be greatly appreciated!

Click here to see answer by jim_thompson5910(35256)

Question 263929: 2x^2-32=0

Click here to see answer by CharlesG2(834)

Question 263956: {a|a is greater than 6 and less than 2}
or
the set of all values of a such that a is greater than 6 and less than 2
Click here to see answer by stanbon(75887)

Question 264164: Six hundred people attended the premiere of a motion picture. Adult tickets cost $7, and children were admitted for $2. If box office receipts totaled $3950, how many children attended the premiere?
Click here to see answer by checkley77(12844)

Question 264272: 4n+5=6n+7
Click here to see answer by checkley77(12844)

Question 264294: 28% of my salary goes to federal income taxes. If I pay $50,400 in taxes, what is my salary?
Click here to see answer by unlockmath(1688)

Question 264324: I need to solve for y to graph. The equation is x-2y=10. How do I do that?
Click here to see answer by JBarnum(2146)

Question 264392: Lets say you have four weeks to come up with $800 dollars for your mortgage payment. You want to come up with the same amount for each week. Create a mathematical equation to calculate the amount you will need each week to reach your goal.
I need the equation for this problem, please. I think it is 4x = $800, but I am not sure. I also need to know how to arrive at the answer. Thank you.
Click here to see answer by richwmiller(17219)

Question 264517: please help
solve the following problem.round answer to two decimal places when necessary.
C=100
(Pi)=3.14
D=C�(Pi)
D=
Click here to see answer by stanbon(75887)

Question 264528: A mortar shell is s feet above the ground after t seconds, where s = f(t) = -16t2 + 512t + 64. Find the height of the shell 24 seconds after it is fired. (Simplify the answer as much as possible.)
s= ? ft.
Click here to see answer by Alan3354(69443)

Question 264593: What is the only value z-24=2z+50? Enter your answer as a decimal.

This is exactly what my book says. I need help! Please help! It was the very first question for my homework.
Click here to see answer by jim_thompson5910(35256)

Question 264552: what are the steps for this equation? p-1=5p+3p-8?
Click here to see answer by jim_thompson5910(35256)

Question 264589: SUE WANTS TO BUY A PRINTER THAT COST $189. SHE HAS $125 SAVED .SHE HAS A JOB THAT PAYS $8 AN HOUR. HOW MANY HOURS MUST SHE WOK TO EARN ENOUGH TO BUY THE PRINTER
Click here to see answer by checkley77(12844)

Question 264660: How do i solve 13= 8-6r ??
Click here to see answer by checkley77(12844)

Question 264730: Please help!!!
3y-2 (inside radical)= y-2

Click here to see answer by jim_thompson5910(35256)

Question 264746: College algebra last class to an associate degree...math illiterate..please help..
5w+6 (inside radical) -w=2
Click here to see answer by jim_thompson5910(35256)

Question 264773: Find three consecutive odd integers whose sums if 141. use the 5 step method.
Click here to see answer by Alan3354(69443)

Question 264799: How do you solve 5/2 plus 1/5 equals 1/x
Click here to see answer by mananth(16946)

Question 264827: The surface area of a cylinder is 408 square inches. Make an algebraic equation involving x ans solve with proper algebraic steps.
radius is 5 inches. x is length.
Click here to see answer by mananth(16946)

Question 264876: How can I solve this equation -(-53-65)-(55+3)=55
Click here to see answer by CharlesG2(834)

Question 264904: soybean meal is 12% protein; cornmeal is 6% protein. how many pounds of each should be missed together in order to get 240lb mixture that is 7% protein? how many pound of soybean and how many pounds of cornmeal?
do we take 12% and convert to .12 and 6% to .06 and thats as far as i can get.
Click here to see answer by josmiceli(19441)

Question 264901: Need Help!!
Find the point(s) of intersection of the parabola y=x^2+4x+3 and the line
y=x+1.
Click here to see answer by josmiceli(19441)

Question 264994: find the distance between the pair of points and find the midpoint of the segment having the poinits as endpoints. (a, 1/a) and (a+h, 1/a+h) /= divided by
I figured out the midpoint (2a+h/a, 2a+h/2a(a+h) but I am having trouble with the distance: I got this far, I don't know what to do next.
d= square root (a+h-a)^2+ 1/a+h-1/a)^2

Click here to see answer by Alan3354(69443)

Question 265091: I strongly attempted to do this problem on my homework it's one of the one's I can't solve I'll greatly appreciate if you can help me with it, please explain it if you can here's the problem.
-9w+17=7-4w
Click here to see answer by ankor@dixie-net.com(22740)

Question 265121: 3w^2+13w=10
Click here to see answer by JBarnum(2146)

Question 265119: Anyone, please help, I have test on Tuesday, dont have a clue about algebra need to pass this class for associate degree. I will have several problems. I do appreciate the time you take to answer.

4t^2+9=12t
Click here to see answer by jim_thompson5910(35256)

Question 265123: Please help, continued..
m^2-25=0
Click here to see answer by JBarnum(2146)

Question 265169: 5x-2+3(x+4)-1
Click here to see answer by stanbon(75887)

Question 265172: five times a number is 35 greater than twice the opposite of the number. What is the Number ?
Click here to see answer by palanisamy(496)

Question 265127: 25z^2-32=0
Click here to see answer by checkley77(12844)

Question 265125: 4y^2+9=0
Click here to see answer by checkley77(12844)

Question 265202: The variables x and y are related by the following equation: x = 3y2 - 5
If x = 103, what positive value of y makes this an equality?
Click here to see answer by stanbon(75887)

Question 265204: Solve and check
7r-(2r+8)=32
Click here to see answer by jim_thompson5910(35256)

Question 264935: If Dixi has x amount of ice-creams, Cena has 10 more than Dixi, Malida has half as many as Dixi, together they have a total of 50 ice-creams. How many ice-creams does Dixi have?
Click here to see answer by ankor@dixie-net.com(22740)

Question 265336: Need to end up with a formula set to a. I have tried to many things, but it's never right.
-1/2a(t^2) = a*t*z - 1/2g(z)

I've always struggled with being able to solve these when the piece needed is embedded in both sides :(
Click here to see answer by stanbon(75887)

Question 265344: How do I begin to solve these equations? 1) 1/2x+5/8=3/4x 2) 2x/4+x/5=7/10 3) -4(n+5)+3(2n-4)=5(n-4)
Click here to see answer by unlockmath(1688)

Question 265344: How do I begin to solve these equations? 1) 1/2x+5/8=3/4x 2) 2x/4+x/5=7/10 3) -4(n+5)+3(2n-4)=5(n-4)
Click here to see answer by mtdddog75(2)

Question 265349: I have a problem it is 8y+3y I need help with it can u please help me
Click here to see answer by unlockmath(1688)

Question 265321: what the answer to these problems x+5/2=1/2
3.81=-0.03P
5.82Y=15.132
Click here to see answer by alexrodri0(1)

Question 265611: the square root of x-1 +x=3
Click here to see answer by checkley77(12844)

Question 265578: An airplane flew for 8 hours at an airspeed of x miles per hour (mph),and for 7 more hours at 325 mph.If the average for the entire flight was 350 mph, which equations could be used to find x?
Click here to see answer by checkley77(12844)

Question 265761: n-2=4-2n please show work
Click here to see answer by Edwin McCravy(20054)

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