Friday
April 25, 2014

Search: write quadratic equation from formula

Number of results: 43,204

Algebra
Use the quadratic equation to solve the equation: 4k(k+13)=13
Thursday, April 26, 2012 at 4:29pm 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=(...
Sunday, August 12, 2007 at 11:09pm by Marissa

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 ...
Friday, March 30, 2012 at 5:21pm by Gurlredneck

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 ...
Thursday, February 7, 2008 at 9:52pm by KL

algebra
Solve using the quadratic formula and leave the answer in radical form: y^2+6y-1=0
Thursday, March 10, 2011 at 10:18pm by mimi

Precalculus
Solve for x, 0<x<2pi 3sin^2x - sinx -2=0 Its not factorable, do I use quadratic formula?
Tuesday, January 31, 2012 at 8:48pm by jake

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...
Sunday, March 14, 2010 at 10:56pm by Alyssa Pacheco

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.
Thursday, December 16, 2010 at 8:20pm by Brian Meredith

trig
write an equation expressing: cos37cos99 as a sum Review question. I know the formula. Having trouble with working it out.
Sunday, November 6, 2011 at 7:26pm by Gaile

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?
Thursday, October 6, 2011 at 11:56pm by Sejul

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 ...
Sunday, February 4, 2007 at 9:03pm 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 ...
Monday, November 1, 2010 at 5:26pm 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 ...
Monday, November 1, 2010 at 6:30pm by dwayne

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 ...
Tuesday, May 12, 2009 at 2:44pm by Sarah

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, ...
Monday, May 7, 2012 at 12:15pm by Elizabeth

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 ...
Thursday, September 29, 2011 at 11:28am by HM

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 ]
Tuesday, September 30, 2008 at 4:07pm by shannon

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...
Thursday, April 19, 2007 at 9:29pm by jasmine20

Quadratic Functions
Please explain to me how to do the following problems, I dont understand them. Thanks! Find the x-intercepts (if any) for the graph of the quadratic function. 1.f(x) = (x + 2)2 - 4 Find the y-intercept for the graph of the quadratic function. 5.y + 9 = (x + 3)2 Find the domain...
Saturday, October 13, 2007 at 11:46pm by Carmen

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 ...
Sunday, November 11, 2007 at 1:44pm by Monte'

College Algebra
Solve 2x(squared)-3x-2=0 using the quadratic formula. Can someone explain this to me please?
Sunday, November 18, 2007 at 9:26pm by Alicia

Math
Solve; 5X2 - 8 X + 3 = 0 using the quadratic formula the 2 is second power can someone explain
Thursday, April 16, 2009 at 7:11pm 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!
Thursday, May 28, 2009 at 4:47pm by Gemma

Algebra 2 URGENT
Solve by using the quadratic formula. Please Show All Work! 4x(x+3)=15
Wednesday, November 18, 2009 at 11:56pm 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.
Sunday, August 22, 2010 at 2:37pm 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?
Tuesday, September 21, 2010 at 11:54pm 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
Wednesday, June 1, 2011 at 4:12pm by David

Algebra1 HELP PLEASE
Solve 7⋅x = x2 - 6 by using the Quadratic Formula. Round to the nearest tenth.
Friday, July 5, 2013 at 10:47am by lisa

Chemistry
Sulfur dioxide gas is bubbled through sodium hydroxide solution Write the balanced formula equation for this reaction
Tuesday, April 12, 2011 at 7:20pm by Janie

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 ...
Thursday, September 6, 2012 at 11:00am 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 ...
Friday, October 22, 2010 at 5:37am by Anonymous

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
Tuesday, October 23, 2007 at 9:31am by shila

math
2.Define the shape of the rectangular area by establishing a relationship between the length and width of the rectangle. For example, L = 2W + 5, or W = 3L 4. Be sure to include the appropriate units (inches, feet, yards, miles, or meters). 3.Using the fact that A = LW, ...
Tuesday, October 11, 2011 at 9:03pm by Anonymous

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) ...
Tuesday, January 15, 2013 at 1:49pm by thad

algebra (quadratic formula0
or the period 1990-2003, the amount of biscuits, pastas, and noodles y (in thousands of metric tons)imported into the united states ca be modeled by the function y=1.36(xsquared)+ 27.8x+304 where x is the number of year since 1990. a.write and solve an equation that you can ...
Tuesday, March 22, 2011 at 7:13pm by Bri

MATH
Sketch the graph of a quadratic function for which the related quadratic equation has only one solution. Then, sketch one that has two solutions. Explain how you know by looking at the graph the number of solutions there are.
Tuesday, September 15, 2009 at 12:26pm by Anonymous

math
Sketch the graph of a quadratic function for which the related quadratic equation has only one solution. Then, sketch one that has two solutions. Explain how you know by looking at the graph the number of solutions there are.
Thursday, July 7, 2011 at 5:42pm by candy

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 1.00 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)? table 1: mL NaOH=1.00 ...
Tuesday, May 1, 2012 at 5:20pm by Heather

Quadratic equation...
Hi Can anyone help me solve the quadratic equation for the following:- The motion of a two stage rocket is stated by it height y in metres above the ground since t seconds since launch. Flies vertically Ist stage burns for 5 seconds and cuts out. 2nd stage rocket is under ...
Saturday, December 1, 2007 at 12:46pm by Leo

questions
1.) Why are there usually two solutions in quadratic equations? 2.) Under what situation would one or more solutions of a rational equation be unacceptable? If putting the found "solution" cannot be put back into the original equation without violating fundamental math rules...
Monday, August 8, 2005 at 11:45pm by leleirvin

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).
Thursday, October 31, 2013 at 11:38am by kaitlyn

College algebra
Given a quadratic equation in the form y = ax2 +bx +c , and four choices of graphs representing that equation, how can you tell which choices could be eliminated right away by looking at the equation and looking at the graphs and doing some minimal calculations and not ...
Monday, June 6, 2011 at 8:07pm by Belle

add maths
Given that the quadratic equation is (2m+3)x^2+(4m-2)x-(m+1)=0.Find the value of m,if one of the root of the equation is negative one of the root of the equation is reciprocal of the other
Sunday, February 2, 2014 at 9:22pm by mandy

Math
Suppose a scientist on Earth throws a baseball upward. The scientist lets go of the ball 2 meters above the ground with an initial velocity of 10 meters per second. How long does it take for the ball to hit the ground (H=0)? (Use the quadratic formula to solve this problem, ...
Sunday, July 24, 2011 at 2:49pm by A.S.

chemistry
when propane gas C3H8, is burned with oxygen, the products are carbon dioxide and water. Write an unbalanced formula equation for the reaction.
Tuesday, February 3, 2009 at 11:19pm by kate

algebra
Solve each quadratic by using the wuadratic formula and round the answer to the nearest hundredth, if possible. 1. x^2 = 9 2. 0 = 3x^2 - 8
Wednesday, January 19, 2011 at 5:51pm by Clammyson

algebra
Use the quadratic formula to find the zeros of the function. Round to tenths if necessary. y = 17x^2 - 21
Thursday, October 20, 2011 at 11:17am by tracy

math-calculus
using quadratic formula solve |x^2-2x-6| = 4. and answer have to be 1+-sqrt3, 1+-sqrt11 i just not get how to get this.
Wednesday, January 18, 2012 at 11:25pm by Shreya

calculus
Find a formula for a quadratic function whose graph has a y-intercept at y = 21 and only one zero at x = 28.
Tuesday, January 31, 2012 at 1:56pm by Anonymous

Math
We are studying Quadratic formula: A football player punts a ball. The path of the ball can be modeled by the equation y=-0.004x(squared) + x + 2.5, where x is the horizontal distance, in feet, the ball travels and y is the height, in feet, of the ball. How far from the ...
Monday, February 27, 2012 at 10:18am by Jane

maths
1. write a linear equation to model the situation. you have walked 4 miles on a trail. you continue to walk at a rate of 3 miles per hour for 5 hours. 2. write an equation of the line that passes through the point and has the given slope. write the equation in slope-intercept ...
Friday, October 16, 2009 at 1:57pm by lovers

Math
One student studied for 8 years in college and her tuition bills are recorded. Years. One semester tuition 1. 4680 2. 4960 3. 5510 4. 6060 5. 6845 6. 7600 7. 8435 8. 9250 Construct the scatter plot for the data with the scales.choose 3 points,find a quadratic equation in ...
Saturday, December 15, 2012 at 5:41pm by Praphul

math
Suppose that a market research company finds that at a price of p = $30, they would sell x = 36 tiles each month. If they lower the price to p = $15, then more people would purchase the tile, and they can expect to sell x = 41 tiles in a months time. Write two ordered pairs ...
Sunday, July 31, 2011 at 2:37pm by jean

Desperate to understand ionic/net equa.-Chemistry
When the following solutions are mixed together, FeSO4 (aq) + Csl (aq): What precipitate if any will form, Write the balanced equation, write the complete ionic equation and write the net ionic equation?
Friday, April 13, 2012 at 9:26pm by ASA

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 ...
Sunday, February 4, 2007 at 11:21pm by Emily

Math 3
Solve by factoring: One of the solutions to the quadratic equation x^2 - 13x + 30 is 3. What is the other solution? Is it:(x+3) If 3 is a solution, then the quadratic contains a factor (x-3). The other factor is thus (x-10), and it follows that the other root is x = 10. thanks...
Tuesday, January 30, 2007 at 5:30pm by Margie

Chem 2
Phosphorus pentachloride decomposes according to the chemical equation PCl5<-->PCl3 +Cl2 A 0.260 mol sample of PCl5(g) is injected into an empty 2.75 L reaction vessel held at 250 C. Calculate the concentrations of PCl5(g) and PCl3(g) at equilibrium. Please help I'm not...
Monday, March 31, 2014 at 1:20pm by Anonymous!!

pre calc
Solve: (x+5/x)+(6/x-4)=(-7/x^2-4x) I multiplied the entire function by x and x-4 and after doing that I got down to the quadratic equation x^2+7x-13=0 I did the quadratic and got x=1.525 and -8.525 I feel like I made a mistake because when I plug in both of those answers for x...
Saturday, October 24, 2009 at 3:51pm by Muffy

Pre-Calculus
The population of a particular type of bacteria doubles in number every 12 hours. a)if there are 8 bcteria initially, write an equation that models the number of bacteria present after x 12 hours. b)How many bacteria will be present after 5 days? by using this formula N(t)=N0(...
Monday, December 21, 2009 at 12:34am by Amy

CHEMISTRY
Write the formulas for the following substances as they would appear in a total ionic equation: a) Aqueous acetic acid b) solid lithium carbonate c) Aqueous ammonia d) Aqueous sodium dihydrogen phosphate I don't know, do we have to write the formula [like ammonia is NH3] Or ...
Sunday, May 13, 2012 at 4:02pm by DAN

chemistry
Complete the following word equation and write the balanced formula equations: a. Zinc(s) + iodine(g) b. Hydrogen peroxide(l) c. Magnesium(s) + lead(IV) nitrate(aq)
Saturday, March 3, 2012 at 7:12pm by Anonymous

chemistry
3. Complete the following word equation and write the balanced formula equations: a. Zinc(s) + iodine(g) b. Hydrogen peroxide(l) c. Magnesium(s) + lead(IV) nitrate(aq)
Sunday, March 4, 2012 at 7:47pm by Anonymous

(:
help with Quadratic Equations and Functions: 5)Solve 2x2 +6x = 4 by completing the square. 6)Solve 3x2 - 6x- 24 = 0 using the quadratic formula. 7)The area of a circle is 25 in2. What is the radius, including the units? Area of a circle is r^2. 8)The triangle has an area of ...
Sunday, May 20, 2012 at 9:23pm by neveah gomez

polynomials
i also have theses to solve Factor the polynomial x2 + 5x + 6 completely Solve the given equation by using the quadratic formula. x2 7x 4 = 0 What value is under the square root (or radical) in your answer? (Note: You are asked to identify only the value under the radical...
Tuesday, May 15, 2007 at 10:19pm by mike

chemistry - empirical formula
write the empirical formula for each of the following molecular formulae" a)P4O10 b)C2H6 Confused as to what the diff.is b/w empirical and formula...have no idea how to answer these b/c they look like empirical formulas to me
Friday, May 23, 2008 at 2:20pm by Sarah

chem
when an aqueous solution BaCl2 is mixied with an aqueois solution of Na2CO3, solid barium carbonate precipitates out of solution. write molecular equation, complete ionic equattionand net equation. is this the right formula?? BaCl2(aq)+Na2CO3(s)=BaCO3(s)????
Sunday, November 14, 2010 at 9:59pm by julia

Math
Write the equation of the line in standard form: (-3, 6); m = 1/2 (1, 0) & (-5, 3) Write the equation of the line perpendicular to 4x 5y = -10 through the point(2, 3). Write the equation in slope intercept form.
Wednesday, January 8, 2014 at 5:08pm by Katie

Free Fall
Thanks for the help with my previous problems. The acceleration to gravity on the moon is 1.6m/sec^2. If a rock is dropped into a crevasse, how fast it will be going just before it hits bottom 30 sec later? How far below the point of release is the bottom of the crevasse? If ...
Friday, November 3, 2006 at 2:06pm by Jen

Pre Calc still confused
Solve: (x+5/x)+(6/x-4)=(-7/x^2-4x) I multiplied the entire function by x and x-4 and after doing that I got down to the quadratic equation x^2+7x-13=0 I did the quadratic and got x=1.525 and -8.525 I feel like I made a mistake because when I plug in both of those answers for x...
Saturday, October 24, 2009 at 5:00pm by Muffy

Help With Math
Using the quadratic formula to solve equations. -12^2 + 12 x-9 = -7x^2 10x^2 + 5x + 12 = 0 6x^2 + 12x = - 1 11x^2 - 7x -1 = 0 2x^2 -18x + 16 = 0 Can u show work to help me out
Tuesday, November 13, 2007 at 9:07pm by Monte'

Algebra II
Find the exact solutions to 6x^2+x+4=0 by using the quadratic formula. x=-b+-sqrtb^2-4ac/2a -1+-sqrt1^2-4(6)(4)/2(6) -1+-sqrt-95/12 -1-95/12 -96/12 x= -8 -1+95/12 94/12= 7.8333.. [-8, 7.83](answer)
Saturday, March 1, 2008 at 8:03pm by Jon

calculus HS
Thanks for your help . I need to sketch the graph of f(x) = Sqrt 5-4x-x2 by completing the square. I assume I use the quadratic formula for this. But I am a little confused.
Tuesday, September 30, 2008 at 11:18pm by kelly

Chemistry
Write a word and balanced chemical equation for a burning candle. I know that the paraffin in the candle has the formula C20H42 , but I don't know what else to do...
Tuesday, April 21, 2009 at 10:49pm by Susan

cal
find the equation of a quadratic function whose graph is tangent at x=1 to the line whose slope8, tangent at x=-2 to solve the line with slope-4 and tangent to the line y=-8 find the equation of the tangent lines at x=1 and x=-2 graph the quadratic function obtained and the 3 ...
Monday, February 28, 2011 at 11:52pm by erika

College Algebra
Can you please help me solve this word problem? Your boss has asked you to come up with a price model for one of the cell phone models that your company produces. In the model, costs and length of service are directly related. You are also asked to examine the profit formula ...
Wednesday, January 19, 2011 at 11:43am by Michael

math
A ball is kicked from ground level into the air. Its height, y, in feet after x seconds can be represented by the equation y=40x - 16x^2. What is the total elapsed time, in seconds, from the time the ball is kicked until it reaches ground level again? I used the quadratic ...
Friday, May 10, 2013 at 11:58am by Jane

Math
How can I find the point of intersection of the graphs x^2=y=4 and 2x-y=1 by hand? I can do the problem using a calculator, but I don't know how to do it by hand. I tried using substitution, but I ending up getting x^2+2x-5=0. It would not factor evenly. Should I use the ...
Thursday, June 28, 2007 at 9:56pm by Corin

Algebra-Please help-I'm confused
This deals with quadratic functions-If I have a graph with h = (-5)and k =3 and they ask for the translation, would it be {5,3} or would the translation just be {-5,3} Do you take the opposite of the number when it is transalated from the graph or do you only take the opposite...
Tuesday, September 21, 2010 at 8:09pm by Tom

quadratic equation
(x + 6)2 = 49
Thursday, April 14, 2011 at 8:24pm by Anonymous

Math
Can someone please explain how to solve 3x^2+7x-15=0 by using the quadratic equation? I know that the equation is: ax^2+bx+c=0 but I get confused about how to set the problem up and solve. Thanks.
Saturday, September 26, 2009 at 10:08am by B.B.

trigonometry
Complete the square to Solve Quadratic Equation: Solve the equation. Express the answer in simplest radical form. -x^2-7x=-11 Please Help!!!! Thanks.
Thursday, November 12, 2009 at 10:15pm by Sarah

trigonometry
Complete the square to Solve Quadratic Equation: Solve the equation. Express the answer in simplest radical form. -x^2-7x=-11 Please Help!!!! Thanks.
Thursday, November 12, 2009 at 10:15pm by Sarah

Math
Find the discriminant of the quadratic equation and give the number and type of solutions of the equation. s^2√5 + s + √5 = 0 I'm confused because of the radical...
Friday, November 18, 2011 at 12:37am by Linda

math
Write a formula for the height of a trapeziod based on the formula for it area A= 1/2(base1 + base2)h
Wednesday, April 13, 2011 at 9:23pm by brittany

math,algebra,correction
x = (-5 +/-85)/10 do you mean -0.5 or -5 is this right? solve by using the quadratic formula: 5x^2+5x=3 i get: x= -0.5 (+/-)((sqrt(85)/(5)) check up on your proper use of the formula I got x = (-5 +/-√85)/10 which, if you want to separate it into two terms is 1/2...
Saturday, April 14, 2007 at 3:48pm by jasmine20

Fraction
So I have figured this out but I don't think this is the way I am suppose to write the equation fraction out. 8 1/2 years ago, Steven was 7 years old. How old is he now? Do I write it out like this 8/1 + 1/2 + 7/1 ??? But it comes out too high of a number. I know I am doing ...
Thursday, December 13, 2012 at 5:47pm by Moby

Algebra
This deals with quadratic functions-If I have a graph with he = (-5)and k =3 and they ask for the translation, would it be {5,3} or would the translation just be {-5,3} Do you take the opposite of the number when it is transalated from the graph or do you only take the ...
Tuesday, September 21, 2010 at 7:04pm by Tom

algebra
a student write that an=3n+1 is a explicit formula for the sequence 1,4,7,10.explain the error and write the correct explicit formula for the sequence.
Wednesday, September 11, 2013 at 9:36pm by dee

trig
how do you start this equation i've been tryng it for 20min. sec^6x(secxtanx)-sec^4x(secxtanx)=sec^5xtan^3x ec^6x(secxtanx)-sec^4x(secxtanx)=sec^5xtan^3x Factor out a sec^5 tan and divide thru. Left is sec^2 x = Tan^2 x Then this should reduce to sin^2 x = cos^4 x take the ...
Monday, November 6, 2006 at 10:05pm by berhana

math/algebra
cab someone help me? solve by quadratic formula 3x^2 - 5x = -1 I cannot come up with the -5x and get the 1 for factoring. put it into standard form: 3x^2 -5x +1=0 a= 3 b= -5 c=1 x= (5 +- sqrt (25 -12)/6
Sunday, August 19, 2007 at 1:06pm by dee

Physics
If a projectile is fired straight up at a speed of 10 m/s, the total time to return to its starting position is about ? When I use the quadratic formula, I get -8.97
Sunday, September 9, 2007 at 7:09pm by Jess

algrebra
Solve by applying the quadratic Formula: all radicals should be simplified as far as possible. Show your work. a^2 -12a + 35 =0
Sunday, April 25, 2010 at 3:01pm by dan

college
How can you get the quadratic formula out of this if there are two unknowns? speed of sound and u. also is there suppose to be another + after the second u? u^2/speedsound+u sqrt2/g - 3.4=0
Friday, October 1, 2010 at 9:13pm by anthony

Chemistry
Phthalic acid, H2C8H404, is a diprotic acid used in the synthesis of phenolphthalein indicator. Ka1= 1.2x 10^-3, and Ka2 = 3.9 x 10^-6. a) Calculate the hydronium-ion concentration of a .015 M solution. b) What is the concentration of the C8H4O4^-2 ion in the solution? I don't...
Monday, April 2, 2007 at 11:29pm by Rachael

Algebra 1 Concepts and Skills
"Write Equation of a line" USE: Y-Y1=M (x-y1); replace(x1,y1) and M. How would I take that formula and use it on a problem like,,, y-2=-5(x+6)??????
Tuesday, December 13, 2011 at 10:30pm by Cati

math
During rush hour, Fernando can drive 20 miles using the side roads in the same time that it takes to travel 15 miles on the freeway. If Fernando's rate on the side roads is 9 mi/h faster than his rate on the freeway, find his rate on the side roads. What is the formula and ...
Saturday, July 14, 2007 at 9:50pm by Diana

algebra
Can someone please help me with this one? Solve (5x+4)^1/2-3x=0 Just so you know, it is to the 1/2 power. Add 3x to both sides of the equation, then square both sides. That should enable you to gather terms and factor. Yeah, that's the part I understood. Could you help me with...
Saturday, March 10, 2007 at 3:47pm by Lydia

Science (Chemistry)
. Complete all the following for the reaction (NH4)2S + Cd(NO3)2 --> CdS(s) + NH4NO3 1. Balance this equation 2. Write the ionic equation 3. Write the net ionic equation
Friday, March 14, 2014 at 10:00pm by Anonymous

ALGEBRA 2
The formula for determining simple interest is I = prt. Which equation shows the formula solved for t?
Thursday, January 12, 2012 at 6:56pm by KELR

Chemistry
I have to write the balanced equation for the reaction between hydrochloric acid and zinc metal.I came to the answer of: HCl+Zn(s)-->H(g)+ ZnCl Can someone tell me if this is the correct balanced equation for this reaction? No it isn't but it's close. The gas hydrogen ...
Monday, April 23, 2007 at 2:30pm by Chrissy

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