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

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

 Question 134792: 3x2+10x+5=0 I need this to be simplified as much as possible. Thank You. Click here to see answer by solver91311(16897)

 Question 134797: Given the function h described by h(x)=7x, find each of the following. a) h(19) b) h(6) c) h(21) Please help!! Click here to see answer by vleith(2825)

 Question 134796: Given the function f described by k(x)=x+12 find the function value. k(0)= Help please can someone please explain this to me in plain English I do not understand this from my book at all. Click here to see answer by scott8148(6628)

 Question 134804: Given the function h described by h(x)=2.75x+71.48 can be used to predict the height in centimeters of a woman whose humerous (the bone from elbow to shoulder)is x cm long. Predict the height of a woman whose humerous is 33 cm long. ?? cm? Help me please. This is even getting harder than I remember in high school. Click here to see answer by Earlsdon(6287)

 Question 134822: I know that the topic that i chose isn't going to correspond with the question that i am goin to ask. The topic is Transformations and the Circle Family. This topic has to deal with the unit circle equation which is x(square)+y(square)=1. I am having problems writing an equation from looking at the graph...... Can you explain and give examples as to how i am suppose to figure out the equation from lookin at the graph? Click here to see answer by solver91311(16897)

 Question 134850: The value of (3pie/5) radians in degree is (a)54 degree (b)60 degree (c)108 degree (d)120 degree Click here to see answer by vleith(2825)

 Question 134646: This is a hard question for me to type properly, I hope someone understands. Solve: [cubedroot (8^(x+1))/(16^x)]=32 I think I can also type it like this: (8^(x+1)/16^x)^(1/3) =32 . Click here to see answer by vleith(2825)

 Question 134922: Graph the equation y=8 Help please. Click here to see answer by nycsharkman(136)
 Question 134922: Graph the equation y=8 Help please. Click here to see answer by vleith(2825)

 Question 134929: write a quadratic equation that describes the area of a rectangle whose perimeter is 24 feet. Click here to see answer by ankor@dixie-net.com(15656)

 Question 134974: Given A(-4,6), B(-1,2),C(x,14) and D(5,10). If AB is parallel to CD, find the value of x. Click here to see answer by vleith(2825)

 Question 134966: What is the domain for y=logbase3(2x-1)+4? Click here to see answer by stanbon(57361)

 Question 134967: Solve for x: logbase2(logbase3(logbase4 x)=0 Click here to see answer by stanbon(57361)
 Question 134967: Solve for x: logbase2(logbase3(logbase4 x)=0 Click here to see answer by josmiceli(9681)

 Question 135036: Hello, tutors my homework assignment question is for college algebra. Response to the following: Quadratic equations can be solved by graphing, using the quadratic formula, completing the square, and factoring. What are the pros and cons of each of these methods? When might each method be most appropriate? Which method do you prefer? Why?) Thanks inadvance for your great work and assitance. Roosevelt Click here to see answer by vleith(2825)

 Question 135032: The decimal notation for the fraction -8/9 is? Round to the nearest hundredth. Thanks for any assistance you may be able to provide. Click here to see answer by vouge(2)

 Question 135067: What is the difference between domain and range? Describe a real-life situation that could be modeled by a function. Can someone explain this so I can understand it? Click here to see answer by vleith(2825)
 Question 135067: What is the difference between domain and range? Describe a real-life situation that could be modeled by a function. Can someone explain this so I can understand it? Click here to see answer by solver91311(16897)

 Question 135035: please simplify thank you 2 (to the fifth power) + 2 (to the fourth power) - 14. I can't figure out how to enter these properly Click here to see answer by vleith(2825)

 Question 135033: Any assistance would be appreciated. The expression for figuring a student's average test score is p/t, where p is the total points earned on all the tests, and t is the number of tests. Find a students average when 344 points are earned on 4 tests. Click here to see answer by checkley77(12569)

 Question 134920: 3x^2+7=31 7n^2-6=15 5x^2-12=5 what does x = Click here to see answer by ankor@dixie-net.com(15656)

 Question 135108: Ok my problem is a graph and im supposed to find the quadractic function and put it in standard form. The graph has two points on it which are vertex(0,3) and another point of (2,4). so today we went over in class how to solve problems like these so i put the information i had into f(x)= a(x-h)∧2 + k. I get all the way down to solving it but when i graph it. It doesnt graph out right which makes me think im doing it wrong. I know a is supposed to be negative but when i solved it, it came out positive so that was also wrong. I just dont know what to do. Click here to see answer by solver91311(16897)
 Question 135108: Ok my problem is a graph and im supposed to find the quadractic function and put it in standard form. The graph has two points on it which are vertex(0,3) and another point of (2,4). so today we went over in class how to solve problems like these so i put the information i had into f(x)= a(x-h)∧2 + k. I get all the way down to solving it but when i graph it. It doesnt graph out right which makes me think im doing it wrong. I know a is supposed to be negative but when i solved it, it came out positive so that was also wrong. I just dont know what to do. Click here to see answer by stanbon(57361)

 Question 135152: A circle passes through the origin at point (3,0) and (0,4). What is the radius of the circle? Click here to see answer by checkley77(12569)

 Question 135163: A silver coin was purchased for \$430 in 1985.The market value for silver declined to the point that in 2007 the coin was worth \$200. What was the average annual rate of depreciation of the silver coin? Click here to see answer by stanbon(57361)

 Question 135209: Happy Friday to you math pros! Can I get a little help from you this morning? The expression for figuring a student's average test score is p/t, where p is the total points earned on all the tests, and t is the number of tests. Find a student's average when 344 points are earned on 4 tests. The average is____ points. thanks Click here to see answer by stanbon(57361)

 Question 135211: Is this right? Use the commutative law to find an equivalent expression zy. Is it z.x? Thank you for your time. Click here to see answer by stanbon(57361)

 Question 135213: Please. I need help evaluating this problem. p+q/5 for p=44 and q=1 (simplify the answer) Thank you Click here to see answer by stanbon(57361)

 Question 135214: o.k. o.k. last one today I promise! Use multiplying by 1 to find an expression equivalent to 16/7 with a denominator of 28x. Do not simplify type a fraction Click here to see answer by stanbon(57361)

 Question 135227: Can all quadratic equations be solved by factoring? Explain with examples Click here to see answer by Earlsdon(6287)

 Question 135205: calculate the value of the discriminant of x^ + 2x +1 = 0 by examining the sign of the discriminant in part a, how many x- intercepts would the graph of y + x^ + 2x +1 have ? Why? Click here to see answer by solver91311(16897)

 Question 135282: I worked this problem out and I'm not sure of my answer. Please Help!!! Solve equation using the quadratic formula Click here to see answer by solver91311(16897)

 Question 135289: confused on quadratic formula solve following equation using quadratic formula Click here to see answer by stanbon(57361)

 Question 135299: Complete tables of value and Graph quadratic equation x y ______ -2 -1 0 1 2 Click here to see answer by vleith(2825)

 Question 135300: Solve: a) logbase3 27+ logbase3 9-logbase3 81= logbase3 x ( I think the answer is 3) b) logbase2 8 - logbase2 4=x ( I think the answer is 1) c) logbase5 6- logbase5 x=logbase5 2 ( I think the answer is 3) Click here to see answer by vleith(2825)

 Question 135292: solve equation using quadratic formula Click here to see answer by checkley77(12569)

 Question 135306: Michael is growing two strains of yeast in the labratory. Strain A originally had 80 cells and is known to quadruple every 2 hours. Strain B initially had 640 cells and doubles every 5 hours. When will Michael observe the same number of cells in the two yeast cultures. Click here to see answer by vleith(2825)

 Question 135309: please help with this math question from blitzer 4 (1) use the graph of y =x^2 -2x -8, what are the solutions to this equation? (b) does this unction have a maximum or a minimum ? (c) what is the equation of the line of symmetry for this graph? (d) what are the coordinates of the vertex in (x,y) form? (2) calculate the value of the discriminant of x^2 + 2x +1 =0 (b)how many x intercepts would the graph of y =x^2 +2x +1 (3) if a rock is throw upward with an initial velocity of 40 ft per second from the top of a 30 ft building, write the height as so, velocity as vo and t as time. equation being s=-16t^2+40+30 (a) how high is the rock after 2 seconds? (b) how many second will the graph reach maximum height? (c) what is the maximum height? i know it's a lot ,but i really need your help. thank you so much Click here to see answer by stanbon(57361)

 Question 135297: Solve for x: logbase2(x-6)+logbase2(x)=4 Click here to see answer by edjones(7569)

 Question 135305: Solve for x: 2(8)^(4x)-33(8)^(2x)+16=0 Click here to see answer by Earlsdon(6287)

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