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July 30, 2015

Search: write quadratic equation from formula

Number of results: 49,413

math
one-half of a number is 8 less than two-thirds of the number. write algebraic equation: the sum of x and 8 is 15 write algebraic equation: 4 more than x is 9 write algebraic equation: 5 less than twice x is equal to 35 write algebraic equation: the product of 10 and x is the ...
May 14, 2013 by ji

Geometry
one-half of a number is 8 less than two-thirds of the number. write algebraic equation: the sum of x and 8 is 15 write algebraic equation: 4 more than x is 9 write algebraic equation: 5 less than twice x is equal to 35 write algebraic equation: the product of 10 and x is the ...
May 14, 2013 by ji

algebra
The ball is kicked straight up in the air from 4' off the ground Original velocity is 60' per second How many secs does it take to hit the ground. Do I use complete the square, square root property, quadratic formula, factoring? formula is h= 16tsquared + 60t +4
May 22, 2013 by barb

Algebra
Which is NOT true about the following table. X. 1, 2, 3, 4 Y 1, 4, 9, 16 A. It shows a linear function******** B. x increases by 1 each time C. The rate of change is not constant D. Y increases by a different value each time Write a quadratic function rule for the given table ...
February 16, 2015 by BUBBLES

Science/ Chemistry
When 0.422 g of phosphorus is burned, 0.967 g of a white oxide (a compound of phosphorus and oxygen) is obtained. a. Determine the empirical formula of the oxide. So for the empirical Formula I got P_2O_5 now it wants me to Write a balanced equation for the reaction of ...
September 22, 2013 by James

chemistry
write a balanced formula equation for the reaction between sulfuric acid and calcium metal
May 13, 2008 by trista

maths!
the formula h=15t-5t^2 gives the height 'h' metres of a ball, 't' seconds after it is thrown up into the air. (i) find the times when the height is 10m (ii) after how long does the bal hit the ground? ive figured out that the answer to (i) is t= 1 or 2 by using the quadratic ...
August 6, 2008 by jessica

TO: DrBob222 science
1. Write the chemical formula for each of the following acids: a.) hydrocyanic acid b.) oxalic acid c.) chlorous acid d.) nitric acid 2. Write the acid name or chemical formula for each of the following: a.) HBr b.) sulfurous acid c.) HClO4 D.) phosphoric acid 3. First ...
March 20, 2014 by Anonymous

math
Q. Naomi has a formula that allows her to convert Clesius temperatures to Farenheit temperatures. She needs a formula for converting Fahrenheit temperatures to Celsius tempertures. What advice can you give her? I am thinking that I just reverse the preocess of the first ...
January 24, 2007 by catalina

Math
how do you solve for y in the expression: x^3=y(y+3)? x^3=y^2 + 3y y^2+3y- x^3=0 Using the quadratic formula.. y= (-3+-sqrt(9+4x^3) )/2
August 24, 2006 by Jamie

college math 209
use the quadratic formula to solve for x, 3x^2 + x -8=0
January 16, 2011 by Anonymous

11th grade-math
help me Use the Quadratic Formula to solve N2=6n
May 24, 2011 by kayla

math-calculus
x-1/x+1 = 2x/15 (15)(x-1) = (2x)(x+1) 2x^2-15x+17 do i put this in quadratic formula? i so confused.
January 7, 2012 by Shreya

math-calculus
30/x^2-25 = 3/x-5-2/x+5 i be left with 30 = 3x^2-75-2x^2+50 i not sure what to do? i use the quadratic formula?
January 7, 2012 by Shreya

math
48x^2-32x-35=0 quadratic formula is x=-b+/-b^2-4ac/2a please help
October 26, 2012 by danica

math
find the real solutions using the quadratic formula 6-(1/x)-(4/x^2)=0
December 2, 2012 by brad

Math Help now !!!! Plz
Solve using the quadratic formula X^2-4x=21
December 12, 2012 by David

algebra 2
x^2 - 3x + 5 = 0. solve using quadratic formula. show solution
January 15, 2014 by em

Pre Calcu
Use the quadratic formula to find the zeros of f F(x)=2x^2-4x-11
January 26, 2014 by Anonymous

algebra
2x^=5-2x find the real solution using the quadratic formula
September 5, 2014 by sue

math
What will be the answer of 4x(x-1)+5=0 when i'll use quadratic formula to solve it. Thank you ! ^___^
September 11, 2014 by ghenny

math
Please solve these using the quadratic formula: 1. 3x^2-4(x-2)=0 2.a^2+2(a++5)=0 3.x^2-3(2x+3)=0 Thank you ^____^
September 11, 2014 by ghenny

Algebra 2
How do I solve this using the Quadratic formula and finding the determinant? 1. 5x-6=0 2. x+25=0
November 12, 2014 by Jessica

ALGEBRA
how do i solve this linear equation: 3x/4 + 6 = -12 (3x over 4 is a fraction) and this quadratic equation..... -4x squared = 0??
September 10, 2009 by ggift

maths
The following quadratic equation has the integer solutions x^2+5x-6=0 what is the positive solution of the equation
March 29, 2011 by elizabeth

Equation
-4x (little 2) =0 Not sure what name the technique means. I know this is a Quadratic Equation.
June 19, 2010 by Lisa

Algebra1 HELP PLEASE
The solutions to a quadratic equation are -1 and 7. What is the equation of its axis of symmetry?
July 3, 2013 by lisa

maths
quadratic equation solve the equation by factorization 27x^2 - 126x = 0 So x=? or x=?
August 1, 2013 by gean

Algebra
The following equation is quadratic. f(x)=(x-7)(3x-2) What are the x-intercepts of the graph of the related equation y=(x-7)(3x+2)? A) -7 and 2/3 B) -7 and 3/2 C) -3/2 and 7 D) -2/3 and 7
April 30, 2015 by Ashley

Chemistry
Water is added to 4.267 grams of UF6. The only products are 3.730 grams of a solid containing only uranium, oxygen and fluorine and 0.970 gram of gas. The gas is 95.0% flourine, and the remainder is hydrogen. From data determine the empirical formula of the gas. What fraction ...
January 9, 2011 by deanna

chemistry
Water is added to 4.267 grams of UF6. The only products are 3.730 grams of a solid containing only uranium, oxygen and fluorine and 0.970 gram of gas. The gas is 95.0% flourine, and the remainder is hydrogen. From data determine the empirical formula of the gas. What fraction...
January 9, 2011 by Deanne

Algebra
Please show me how to solve this problem. 8/x^2-16 + 3/4 = 1/x-4 multiply each of the terms by x^2, collect your like terms and bring them all to the left side. You will have a quadratic equation. BTW, since you did not use brackets I will assume your last term is (1/x)-4 and ...
May 8, 2007 by Marie

algebra II
Can you please help me with the these problems. 8.Write an equation in standard form of the parabola that has the same shape as the graph of f(x) = 11x^2, but which has its vertex at (2, 9). 10. Use the vertex and intercepts to sketch the graph of the quadratic function. y + 3...
October 13, 2007 by Ashley

Algebra help
Match the equation 4x^6-2x^3+1=0. With a substitution from the column that could be used to reduced the equation to quadratic form: a) u=x^-1/3 b) u=x^1/3 c) u=x^-2 d) u=x^2 e) u=x^-2/3 f) u=x^3 g) u=x^2/3 h) u= x^4
March 24, 2011 by Miguel

Algebra help
Match the equation 4x^6-2x^3+1=0. With a substitution from the column that could be used to reduced the equation to quadratic form: a) u=x^-1/3 b) u=x^1/3 c) u=x^-2 d) u=x^2 e) u=x^-2/3 f) u=x^3 g) u=x^2/3 h) u= x^4
March 24, 2011 by Miguel

Math
1)If the roots of a quadratic equation are -2 and 3, the equation can be written as A) (x+2)(x+3) B) (x-2)(x+3)** C) (x+2)(x-2) D) (x-2)(x-3) Is the answer B? If someone could help me that would be great.
April 29, 2015 by Alan

math,help,algebra I
I need help can someone help me get unstuck and let me know if i am correct.thank you. solve by completing the square. 4x^2+2x-3=0 this is what i am doing: i used the quadratic equation. so where i am is in this step: x = (-2 (+-) sqrt (-44))/(8) from this point i am stuck: ...
April 14, 2007 by jasmine20

Chemistry
Dilute H3PO4(aq) and NaOH(aq) are mixed in chemically equivalent quantities. Write the formula equation for the reaction
April 30, 2011 by Donna

algebra2
If the discriminant of a quadratic equation is equal to zero, how many real solutions does the equation have? A. 0 B. 1 C. 2 D. 3 please help!!
June 25, 2012 by laltk

algebra1please look over THANK YOU
The solutions to a quadratic equation are -1 and 7. What is the equation of its axis of symmetry? I GOT 3 is that right
July 3, 2013 by lisa

quadratic equation
what's the positive root of the following equation x(square)=7x+8
February 8, 2012 by tanya

quadriatic equation
solve and check each of the following quadratic equation (1)x^+x-6=0 (2)x^+8x+15=0 (3)x^+2x+1=0 (4)x^-3x-4=0 (5)x^-4x-32=0
February 15, 2012 by tanya

SAT math
1. x>15-2x / -3 Solve the linear inequality. Write the solution in set builder notation. So, -3x>15-2x, x<-15..? And how do I write it in set builder notation? 2. y+x=9 and 3y=2x + 8. How do I solve this system of equations? 3. Find the maximum y- value of the ...
June 1, 2013 by mysterychicken

algebra
Hi Dear Jiskha team, I have Algebra homework and I will need some help. The homework is following: Suppose you are using a computer to draw a face on a coordinate plane. The eyes are at (3, 3) and (3, 3). The tip of the nose is at the origin. To make a smiling mouth, you are ...
February 22, 2012 by Lily

math
is these answers correct? solve the equation: 2x^2 +8x - 17=(x +2)^2= x=-7,3 solve (v-5)^2-63=0, where v is a real number, simplify answer as much as possible. v=3 square root 7+5,-3 square root7+5 v``12.93725, -2.937254 use the quadratic formula to solve for x. 4x^2x-4=0 =x=1...
October 31, 2010 by lee

PHYSICS
A DAREDEVIL JUMPS A CANYON 12 METERS WIDE. TO DO SO HE DRIVES A CAR UP A 15 DEGREE INCLINE. a. WHAT IS THE MINIMUM SPEED HE MUST ACHIEVE IN ORDER TO CLEAR THE CANYON? B. IF THE DAREDEVIL JUMPS AT THIS MINIMUM SPEED WHAT WILL HIS SPEED BE WHRN HE REACHES THE OTHER SIDE? Write ...
November 1, 2006 by Jill Hefner

math
Can someone explain how to label the vertex of this equation. f(x)= -(1/2)x^2. i know how to do these question but when it actually has the other components to the quadratic equation.
April 6, 2010 by jen

Intermediate Algebra
If the discriminant of a quadratic equation has the given value, determine the number and type of solutions of the equation. A.48 B.0
April 21, 2012 by Ralph

Algebra
Suppose a market research company finds that at a price (y) of $30, they would sell x =10 t-shirts. If they lower the price to y = $20, then more people would purchase the t-shirts, and they can expect to sell x = 30 t-shirts. Find the equation of the line for the demand ...
March 30, 2012 by Gurlredneck

Chem
Complete the table below: Note: Make simplifying assumptions, do not use the quadratic formula. What is the pH of the solution created by combining 1.90 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 mL of the 0.10 M HC2H3O2(aq)? mL NaOH: 1.90 pH w/HCl...
May 7, 2012 by Jenna

college
Solve; 5X2 - 8 X + 3 = 0 using the quadratic formula the 2 is to the second power a. X = 1 and X = 3/5 b. X = -1 and X = 1/5 c. X = 1 and X = - 2/5 d. X = 3 and X = - 1/3
April 16, 2009 by deirra

math
Solve; 5X2 - 8 X + 3 = 0 using the quadratic formula . the 2 is second power
April 16, 2009 by Minnie

math
how to find the values of x?? x^2 - 3x - 7 = 0 tried quadratic formula and completing the square what else can i do??
October 21, 2010 by john

pre cal
using formula v=-b/2a, 4ac-b^2/4a graph the quadratic function f(x)=x^2-6x+5
February 3, 2011 by heather

college algebra
find the real solutions, if any. use the quadratic formula 2/3x^2 - x -3=0
January 23, 2012 by kathy

math
solve(x-1)^2=-4..... i used the quadratic formula but got stock ... please help thank you
May 16, 2012 by devon

math
1/2x^2=x/4+1 how can i solve that with quadratic formula?plz i need the solution fast.
January 28, 2013 by Riana

math
solve for x in the following expression using the quadratic formula 3x^2 + 29x - 8.5=0
February 19, 2013 by Anonymous

math
f(x)=-16t^2-22t+220 Solve using quadratic formula
October 8, 2014 by spud

College Math
For questions 1-2, apply the quadratic formula to find the roots of the given function, and then graph the function. 1. f(x) = x2 + 4 (6 points) g(x) = x2 - x 12 For questions 3-4, factor the quadratic expression completely, and find the roots of the expression. 1. (3 ...
December 12, 2010 by jennie

math
a patrol boat took 2.5 hours for a round trip 12km upriver and 12km back. the speed of the current was 2 km/h. what was the speed of the boat in still water? ps: i just need to know how to make equations from the question above. it's supposed to create equation, then use the ...
October 15, 2010 by lawrence

8th grade math
Your uncle is three years older than your aunt. The product of their ages is 3190. What are their ages? I know the answer is 55 and 58. But I can't come up with the correct formula or equation to get the answer. I've tried 3(A+3)=3190. It doesn't come up with the right answer ...
February 7, 2008 by KL

Calculus
Find the slope-predictor formula and write an equation for the line tangent to (a, f(a)) for f(x) = x2 - 6x + 4. Make sure you detail the process.
December 16, 2010 by Brian Meredith

trig
write an equation expressing: cos37cos99 as a sum Review question. I know the formula. Having trouble with working it out.
November 6, 2011 by Gaile

Math(Please answer, thank you)
(4.44e-2 - x) (8.06e-2 - x) / (0.331 + 2x)^2 = 1.80e-2 I need to rearrange this equation so that I can get a,b, and c, for the quadratic equation but I am not sure how to do this. Thank you for the help.
March 24, 2012 by Hannah

MATH
(2,14),(1,-1),(3,35) Find the quadratic function y=ax^2+bx+c 1) 4a+2b+c=14 2) a+b+c=-1 3) 9a+3b+c= 35 equation 1&2 = 3a + b = 13 equation 1&3 = -5a +5b = -21
May 12, 2009 by Sarah

Equation
Solve the quadratic equation. 12x2 + 23x + 10 = 0 A.5/4,2/3 B. 5/12, 1/5 C. 5/4, 2/3 D. 5/4, 2/3
June 28, 2010 by Lisa D

Algebra
Use the quadratic equation to solve the equation: 4k(k+13)=13
April 26, 2012 by Jay

Algebra
1)Solve by factoring:5x^2=4-19x answer=-4,1/5 2)Which quadratic equation has roots 7 and -2/3? answer=A A.2x^2-11x-21=0 B.3x^2-19x-14=0 C.3x^2+23x+14=0 D.2x^2+11x-21=0 3)To solve 4x^2-28x+49=25 by using the square root property,you would first rewrite the equation as answer=(...
August 12, 2007 by Marissa

MATH
The perimeter of a rectangle is 540ft. Let x represent the width of the rectangle. Write a quadratic function for the area of rectangle in terms of its width. Find the vertex of the graph of the quadratic function and interpret its meaning in the context of the problem.
June 8, 2014 by Anonymous

Quadratic Equations and Functions
I started having trouble on part (c), and I need to know this before I can go onto the other problems. Plz help! The parabola shown at the right (no picture, sorry) is of the form y=x^2+bx+c. The graph's y-intercept is (0,2), the axis of symmetry is -2.5 and the two points ...
February 4, 2007 by Emily

math 116
a. Write an equation in the y = mx + b format for the canal that runs through the Toaster Company property. Solve for m and b in the y = mx + b formula. The canal crosses the x-axis at -16 and crosses the y-axis at 3. See the chart for a visual. ( b. Write an equation ...
November 1, 2010 by dwayne

math 116
a. Write an equation in the y = mx + b format for the canal that runs through the Toaster Company property. Solve for m and b in the y = mx + b formula. The canal crosses the x-axis at -16 and crosses the y-axis at 3. See the chart for a visual. ( b. Write an equation ...
November 1, 2010 by dwayne

math
Theses are just some problems i did not understand how to do so if you could please explain and write the answer(: anything helps thank you(: 2. Simplify ---(3x^11z^5)^3 b. (3x^5)^ -3 / 2x-5(3y)^4 c.3x^5)^ -3 / 2x ^ -5(3y)^4 (same as b but - 5 is the exponent) 3a.x^2 / 5 + x-5...
March 14, 2010 by Alyssa Pacheco

Honors Chemistry
I need someone to check these questions. I know its a lot of questions. 2NH3 + Ag+ Ag(NH3)2+ a. What is the Lewis acid in this equation? [Ag+] b. What is the Lewis base in this equation? [NH3] Given H2SO4 is sulfuric acid, HNO3 is nitric acid, and H3PO4 is phosphoric acid, ...
May 7, 2012 by Elizabeth

algebra
Solve using the quadratic formula and leave the answer in radical form: y^2+6y-1=0
March 10, 2011 by mimi

Precalculus
Solve for x, 0<x<2pi 3sin^2x - sinx -2=0 Its not factorable, do I use quadratic formula?
January 31, 2012 by jake

algebra
Can you use algebra to find a quadratic equation if your know the coordinates of just ONE point on its graph? Can you use algebra to find a quadratic equation if your know the coordinates of just TWO points on its graph? If so, what information is needed?
October 6, 2011 by Sejul

quadratic functions
The graph of a quadratic function can have 0, 1 or 2 x-intercepts. How can you predict the number of x-intercepts without drawing the graph or (completely) solving the related equation? Suppose that the graph of f(x) = ax^2+bx+c has x-intercepts (m,0) and (n,0). What are the x...
June 6, 2015 by anonymous

Chemistry
Sulfur dioxide gas is bubbled through sodium hydroxide solution Write the balanced formula equation for this reaction
April 12, 2011 by Janie

Math
(2,14),(1,-1),(3,35) Find the quadratic function y=ax^2+bx+c 1) 4a+2b+c=14 2) a+b+c=-1 3) 9a+3b+c= 35 equation 1&2 = 3a + b = 13 equation 1&3 = -5a +5b = -21 i know you take those two equations now 3a + b = 13 -5a - 5b = -21 multiply the top by 5 and the bottom equation by 3 ...
May 12, 2009 by Sarah

College Math
Another question which is confusing. The position of an object moving in a straight line is give by s=2t^2-3t, where is s in metres and t is the time in seconds the object has been in motion.. how long will it is take the object to move 6 meters? I first used the simplfying ...
September 29, 2011 by HM

math,help
on one of last week homeworks i got this one wrong can someone explain to me what is the correct format. The demand supply equations for a certain item are given by: D= -5p+40 S=-p^2+30p-8 The correct answer was: $1.43 how do you get to this answer because i've tried it and it...
April 19, 2007 by jasmine20

math
Algebraically analyze the graph of the function f(x)= -6x^2+5x+2 . Find the vertex, axis of symmetry, range, minimum or maximum value, increasing and decreasing intervals, and zeros. Write the Quadratic equation in standard form. [Standard form is: f(x)=a(x-h)^2+k ]
September 30, 2008 by shannon

chem help
i just don't know where to begin/how a) Write a balanced chemical equation for: potassium carbonate + magnesium chloride b) Write a balanced chemical equation for: sulfuric acid + calcium carbonate c) Write a balanced chemical equation for: sodium sulfate + calcium nitrate d) ...
January 15, 2013 by thad

Math
Football Lesson 5.1 1. y= -0.035x^2 + 1.4x + 1, where x is the distance (in yards) and y is the height (in yards) a. Does the graph open up or down? b. Does the graph have a Maximum value or a minimum value? c. graph the quadratic function. (i'll graph it just write it in the ...
November 11, 2007 by Monte'

math
(a) Complete the square by writing in the form . Note: the numbers and can be positive or negative. x^2-14x-17=(x-7)^2+ (b) Solve the equation by completing the square or using the quadratic formula. If there is more than one correct answer, enter your answers as a comma ...
September 6, 2012 by Anonymous

Math - Solving equation (check )
7 = (210+88t)/(2(sqrt(210t+44t^2))) Is t= 1.0479....? I got the denominator multiplied by 7 and squared both sides to eliminate the sqrt and then simplified, used the quadratic formula to find the values but since the questions is about squirrels growth it can not be a ...
October 22, 2010 by Anonymous

College Algebra
Solve 2x(squared)-3x-2=0 using the quadratic formula. Can someone explain this to me please?
November 18, 2007 by Alicia

Math
Solve; 5X2 - 8 X + 3 = 0 using the quadratic formula the 2 is second power can someone explain
April 16, 2009 by Tracy

Algebra
Do you know a site with some practice problems for a quadratic formula (ax^2 + bx + c) for my test tomorrow? Thank you so much!
May 28, 2009 by Gemma

Algebra 2 URGENT
Solve by using the quadratic formula. Please Show All Work! 4x(x+3)=15
November 18, 2009 by Trisan

Algebra
Use the quadratic formula to find the real solutions: 2x/x-3 + 2/x = 3 I know I multiply both sides by x(x-3), but I don't know how to do that.
August 22, 2010 by Aless

Math
1/4=3-2x-1/x+2..so far i have 8x^2-19x+4=0 do i use quadratic formula to solve the rest of the way?
September 21, 2010 by Roger

Algebra 1
X^2-14x+3=-10 Ineed to know how to find the discriminant quadratic formula and by tabe and graph it Please help me
June 1, 2011 by David

Algebra1 HELP PLEASE
Solve 7⋅x = x2 - 6 by using the Quadratic Formula. Round to the nearest tenth.
July 5, 2013 by lisa

Algebra
Quadratic formula x^2+6x+8-0 (solve by factoring) (second Problem) 5w^2-3=0 Please show steps
May 29, 2014 by tbell

math (please help)
1. Write the equation for the horizontal line that contains point G(-8, 8). 2. What is an equation for the line that passes through points (-1, -4) and (1, 4)? Write the equation in slope-intersect form. 3. Write an equation for the vertical line that contains point E(10, -3).
October 31, 2013 by kaitlyn

math
If an object is fired upward from the top of a tower at a velocity of 80 feet per second, the tower is 200 ft high, the formula is h(t)=-16t^2+80t+200, t is time h is height, how long after it is fired does the object reach the max height? It is like a quadratic equation
October 23, 2007 by shila

chemistry
For the electrolysis of molten potassium bromide: (a) write the equation for the reaction at cathode. (b) write the equation for the reaction at anode. (c) write the equation for the overall reaction.
September 10, 2014 by Shane

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