# Questions on Algebra: Quadratic Equation answered by real tutors!

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 Quadratics: solvers Practice! Answers archive Lessons Word Problems In Depth

 Question 132466: Determine whether the following equations have a solution or not? Justify your answer. 2x2 + 5x + 5 = 0 Click here to see answer by checkley71(8403)

 Question 132474: I was asked to simplify this problem. I have no idea where to start. 4x^2-13x+3 / 8x^2-2x * 6x^2+6x / x^2-6x+9 Thank you Tammy Bolton Click here to see answer by jim_thompson5910(28595)
 Question 132474: I was asked to simplify this problem. I have no idea where to start. 4x^2-13x+3 / 8x^2-2x * 6x^2+6x / x^2-6x+9 Thank you Tammy Bolton Click here to see answer by TakeATuition.com(57)

 Question 132538: Rita rows 12 km upstream and 12 km downstream in 3 hours. The speed of her boat in still water is 9 km/hr. Find the speed of the stream Click here to see answer by josmiceli(9686)

 Question 132529: Determine whether the following equations have a solution or not? Justify your answer. p2 - 4p + 4 = 0 Click here to see answer by elima(1433)

 Question 132532: Determine whether the following equations have a solution or not? Justify your answer If x = 3 and x = -5, then form a quadratic equation Click here to see answer by solver91311(16897)

 Question 132560: If a pro-basketball player has a vertical leap of about 30 inches, what is his hang time? Use the hang time function: V = 48T^2 So I guess the problem would be set up as: 30 = 48T^2? But, now for some reason I'm stuck. Please help. Click here to see answer by tutorcecilia(2152)

 Question 132534: Solve the following Quadratic equation x^2+7=3x Click here to see answer by checkley71(8403)

 Question 132622: Translate to an algebriac expression. Twice d Click here to see answer by jim_thompson5910(28595)

 Question 132624: Translate to an algebriac expression. 1 more than d Can someone please help me with this? Click here to see answer by jim_thompson5910(28595)

 Question 132626: simplify -40xz/250xz HELP! Click here to see answer by jim_thompson5910(28595)

 Question 132531: Determine whether the following equations have a solution or not? Justify your answer 3z2 + z - 1 = 0 Click here to see answer by checkley71(8403)

 Question 132625: Simplify: 8log10 Click here to see answer by josmiceli(9686)

 Question 132530: Determine whether the following equations have a solution or not? Justify your answer m2 + m + 1 = 0 Click here to see answer by checkley71(8403)

 Question 132629: The length of a rectangle is three times the width. The area is 108 cm squared. Find the dimensions of the rectangle. Click here to see answer by stanbon(57374)

 Question 132637: 9x-8=5x Can someone help me with this. Click here to see answer by jim_thompson5910(28595)

 Question 132631: The length of a photograph is 1cm less than twice the width. The area is 23cm squared. Find the dimensions of the photograph. Click here to see answer by checkley71(8403)

 Question 132648: Collect like terms. 17y-y= Click here to see answer by jim_thompson5910(28595)
 Question 132648: Collect like terms. 17y-y= Click here to see answer by stanbon(57374)

 Question 132645: Two lines have slopes 2k-4 and k+6. What value(s) of k will produce perpendicular lines? I think the answer is k=-4+or- sqrt66/2???????? Click here to see answer by jim_thompson5910(28595)

 Question 132651: Given f(x)=3^x, which statement is true? a) f(x+y)=f(x)+(y) b) f(x+y)=f(x)f(y) c) f(xy)=f(x)+f(y) d) f(x/y)=f(x-y) Click here to see answer by jim_thompson5910(28595)

 Question 132657: What persent of 240 is 60? Click here to see answer by snwbrdfrk(10)

 Question 132649: A hot cup of coffee is left outside where it cools exponentially. The temperature, T, of the coffee in degrees Celsius after t minutes is modeled by the function T=66(b)^(x/2)+17. The temperature of the coffee after 9 minutes is 56 degrees Celsius. What is the rate of cooling? I think the answer is 3% every two minutes???? Click here to see answer by stanbon(57374)

 Question 132620: Write as a single logarithm and simplify. 2/3logbase8 (64)-1/2logbase8 (16)+3logbase8 (4) Click here to see answer by snwbrdfrk(10)

 Question 132614: The graph of the quadratic function has vertex (3,-2). If the zero of the graph is -7, then what is the other zero?????? Click here to see answer by mathispowerful(115)

 Question 132661: The length of rectangular mural is 2m greater than the width. The area is 20m squared. Find the dimensions of the mural. Click here to see answer by snwbrdfrk(10)

 Question 132616: Solve for x: 2logbase4(2x)-logbase4(3x-5)=logbase3 (9)??? Click here to see answer by mathispowerful(115)

 Question 132646: Solve: logbase4(3x^2-2x)=logbase6 36 I think the answer is {8/3}???? Click here to see answer by josmiceli(9686)

 Question 132642: x+y/7 for x=36 and y=13 x+y/7= Help would this be 7? Click here to see answer by checkley71(8403)

 Question 132623: In 1990,Joshua's university tuition was \$1500. In 1995, tuition at the same university cost \$3200. Assuming that an exponential model applies, how much will tuition cost in 2009? Click here to see answer by checkley71(8403)

 Question 132621: A square lawn is surrounded by a walk one metre wide. If the area of the walk is equal to half the area of the lawn,what are the dimensions of the lawn??? Click here to see answer by checkley71(8403)

 Question 132749: Which function has a domain {xsuch thatx is less than 2, x is R}? a) -1/4(y-2)=(x+5)^2 b) y=3(4)(^-(x-2)) +2 c) y=log(4-2x) d) y=log base1/2 (x-2) I think the answer is (B)????????? Click here to see answer by solver91311(16897)

 Question 132752: What is the value of x for the logarithmic equation: logbase3(logbase2 x)=1??? Click here to see answer by josmiceli(9686)

 Question 132777: Two lines have slopes 2k-4 and k+6. What value(s) of k will produce perpendicular lines? I think the answer is k=-4+ or - sqrt62/2??? Click here to see answer by josmiceli(9686)

 Question 132775: Simplify : -2^0 + (16(^5/4))/(125^-2/3) I think the answer is 801 or 799??? Can someone please help me ?? Click here to see answer by solver91311(16897)

 Question 132804: Factor 7p + 5x = Help me factor this please. Not good at all with these problems. Click here to see answer by checkley71(8403)

 Question 132795: why does the slope equal 0. 5p2+25p+3=0 Click here to see answer by solver91311(16897)

 Question 132816: [3(4-9)-2]-[6-(4-3)]= Can some body please help me with this problem. I do not understand at all. Click here to see answer by solver91311(16897)

 Question 132748: A motor boat travels 300km downstream and returns 300km upstream in a total of 12 hours. The speed of the current is 6km/h. Write the equation that could be used to determine the speed of the motorboat in still water? I think it is (300/x )+(300/x+6)=12 Can someone please confirm this for me ???? Click here to see answer by checkley71(8403)

 Question 132822: Subtract the following -6-(-4) Would this be -10? Click here to see answer by jim_thompson5910(28595)
 Question 132822: Subtract the following -6-(-4) Would this be -10? Click here to see answer by nycsharkman(136)

 Question 132818: Hello I hope someone can help me. Here is the question: THe position of an object moving in a straight line is given by s= 2t^2 - 3t, where s is in meters and t is the time in seconds the object has been in motion. How long (to the nearest tenth) wiil it take the object to move 17 meters? I am so lost! SO far what I have gotten from this is: 17= 2t^2 - 3t 2t^2 - 3t - 17= 0 But now what do I do? Please help-THank you! Click here to see answer by jim_thompson5910(28595)

 Question 132831: Rita rows 12 km upstream and 12 km downstream in 3 hours. The speed of her boat in still water is 9 km/hr. Find the speed of the stream Click here to see answer by checkley71(8403)

 Question 132817: Find the equivelent expression without perenthisis -(a-68)= HELP!! Click here to see answer by nycsharkman(136)

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