Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 404814: Solve the formula for the given variable. Assume all variables represent nonnegative numbers.
A= 11s^2, for s.
Click here to see answer by ankor@dixie-net.com(15645)

Question 404973: How do I factor 10x^2-44x-400=0
Click here to see answer by Alan3354(30993)

Question 405021: how do you do quadratic equations??
Click here to see answer by zaibi(4)

Question 404845: The equation h=-16t^2+80t models the height h feet reached in t seconds by an object propelled straight up from the ground. How long will the object be in the air until it hits the ground?
Click here to see answer by jsmallt9(3296)

Question 405071: how would you compare the value of -b/2a to the vertex of each parabola?
Click here to see answer by MathLover1(6625)

Question 405235: Factor the expression
49x^2-14x+1
Click here to see answer by IWork4Dessert(60)

Question 405440: factor
x^2+2x+5
please solve it
Click here to see answer by richard1234(5390)

Question 405308: For which value or values of k, if any, does the quadratic equation in x,
(k-8)x^2+kx -1 = 0 have exactly one solution?
Click here to see answer by ankor@dixie-net.com(15645)

Question 405483: Explain how to use the graph of f(x) = 2x to obtain the graph of g(x) = log2x.

Click here to see answer by stanbon(57282)

Question 405538: I need to select at least two odd numbers, two even numbers and zero for a formula that yields prime numbers...one such formula is x -x + 41. Select some numbers for x, substitute them in a formula and see if prime numbers occur. Try to find a number for x that when substituted in the formula yields a composite number
Click here to see answer by stanbon(57282)

Question 405789: the members of a flying club plan to share the cost of a $200,000 airplane. The members want to find five more people to join the club so that the cost per person will decrease by $2000. How many memebers are currently in the club?
Click here to see answer by jim_thompson5910(28536)

Question 405556: I need to select two odd numbers, two even numbers and zero for a formula that yields prime numbers...one such formula is x^2 -x + 41. Select some numbers for x, substitute them in a formula and see if prime numbers occur. Try to find a number for x that when substituted in the formula yields a composite number
Click here to see answer by ankor@dixie-net.com(15645)

Question 406079: Use the following quadratic equation to complete parts a and b below. You must show all work.
x2 + 4x - 21 = 0
a. Solve by factoring.
b. Solve using the quadratic formula.
Click here to see answer by stanbon(57282)

Question 406247: Decide which method you will use to find the solution or solutions. Find x.
-Factoring as a perfect square.
-Factoring over the integers.
-Completing the square.
-Quadratic Formula
24x^2+10x=99
Click here to see answer by ankor@dixie-net.com(15645)

Question 406317: How do you find the equation of a graph of a parabola if the vertex is a decimal?
Click here to see answer by stanbon(57282)

Question 406322: Thanks for you time... I absolutely do not like algebra!
I need help with how to factor this equation completely...

6a^2 - 9ab - 15b^2
Thank you so much!!
Click here to see answer by Alan3354(30993)

Question 406367: Factor:
-8w+uw+vu-8v
Click here to see answer by stanbon(57282)

Question 406577: Can you help with problem please.
9y + 2 = 20

Click here to see answer by rfer(12654)

Question 406577: Can you help with problem please.
9y + 2 = 20

Click here to see answer by richard1234(5390)

Question 406579: x + 5 = -17

Click here to see answer by rfer(12654)

Question 406668: I have two questions, the 1st one is:
#1. The product of two numbers is 10 less than 16 times the smaller. if twice the smaller is 5 more than the larger number, find the two numbers.
I'm having trouble with the first one. The second problem is this:
#2. The area of a rectangular field is 162 sq. m. and its length is twice its width. Find the dimensions of the field.
In number 2 I did this:
Let x = width
2x = length
(2x)(x) = 162
> 2x^2 = 162
> 2x^2/2 = 162/2
> x^2 = 81
> x = 9
I just wanna ask if my answer is correct or do I have to continue and it like this:
> 2x
> 2(9)
> = 18
Looking forward for your response.
Click here to see answer by nerdybill(6951)

Question 406808: how many miles go into 13,860 feet?
Click here to see answer by unlockmath(1599)

Question 407134: Two positive real numbers have a sum of 7 and a product of 11. Find the numbers.
Click here to see answer by richard1234(5390)

Question 407191: Solve
7x^2-12x+3=0
Click here to see answer by mananth(12270)

Question 407189: Solve
3x^2-5x+2=0
Click here to see answer by mananth(12270)

Question 407188: Solve
x^2+6x+9
Click here to see answer by lwsshak3(6490)

Question 407244: If 4x + 1 = 3x − 6, evaluate 5x − 6.
I just honestly do not understand how to work it. I have tried and tried and even used the help on my homework but I just don't understand how to work it. Please help me. I keep solving for x because that's all I know how to do.
Click here to see answer by nerdybill(6951)

Question 407300: graph the quadratic function f(x)=(x+3)^2+1
Click here to see answer by MathLover1(6625)

Question 407300: graph the quadratic function f(x)=(x+3)^2+1
Click here to see answer by graphmatics(170)

Question 406872: given that f(7)=-10 find the value of a in the eauation f(x)=a(x-4)^2+8
Click here to see answer by ewatrrr(10682)

Question 407298: Can someone please help solve for r?
r=__
r^2+3*r=8
Click here to see answer by jim_thompson5910(28536)

Question 407319: Solve for x. 2x squared plus 6x=3
Click here to see answer by jim_thompson5910(28536)

Question 407406: apply the quadratic formula to find the roots of the given function, and then graph the function. g(x) = x2 - x - 12
Click here to see answer by jim_thompson5910(28536)

Question 407409: What is the graph of y=2x^2+2 (y equals 2x squared plus 2)
Click here to see answer by ewatrrr(10682)

Question 407617: if a, b, and c in a quadratic equation are all integers, is the product always rational? explain
Click here to see answer by richard1234(5390)

Question 407641: Graph the function. y=2x^2+5x-7
Click here to see answer by stanbon(57282)

Question 407835: Solve 3x^2-7x-13=0
Click here to see answer by jim_thompson5910(28536)

Question 407890: Hi
Finding this difficult, new to this can someone please help
If z+2+j is one root of the equation z^4-2z^3-z^2+2z+10=0 find the other roots
Many Thanks
Karl
Click here to see answer by Alan3354(30993)

Question 407949: Glen cuts half a rectangular lawn, 40 m by 30 m, by mowing strips of equal width around the perimeter. Brad cuts the small rectangle left. How wide a strip does Glen cut so that they share the work equally?
Click here to see answer by ankor@dixie-net.com(15645)

Question 407957: Write a quadratic equation having the given number as solutions. -3 and -1
Click here to see answer by Alan3354(30993)

Question 407958: Write a quadratic equation in the variable X having the given numbers as solutions. Type the equation in standard form, ax2+bx+c = 0 Solution: 9, only solution
Click here to see answer by Alan3354(30993)

Question 407954: If a pro basketball player has a vertical leap of about 35 inches, what is his hang time? Use the hang-time function V=48 T(squared) His hang time is ______ seconds.
(simplify your answer. Type an integer or a decimal. Round to the nearest tenth.)
Click here to see answer by ankor@dixie-net.com(15645)

Question 407945: A 2cm wide frame is placed around a square photograph. If the total area of frame and photograph is 144cm2. Determine the dimensions of the photograph.
Click here to see answer by Alan3354(30993)

Question 407985: 2x(squared) + 42x + 441 = 2601
Click here to see answer by ankor@dixie-net.com(15645)

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