# why does the equation x^2=-9 has no real solution why does the equation x^2 = 9 has two solutions

56,329 questions, page 97-
## Math

-2x^2+4x+3=0 Complete square Quadratic equation

*asked by Ciara on June 4, 2018* -
## Pre-Algebra

combine like terms and solve equation: m/4-6=2

*asked by Lucy on September 20, 2010* -
## Math

Where does the parenthesis go to make the equation true 5+4*3-1=18

*asked by Abel on September 12, 2016* -
## MATH

What is the equation of the parabola with a directrix at y = 4 and focus (0, -4).

*asked by Vince on June 7, 2011* -
## algebra 1

in the equation below, y is a function of x. y = 4x + 8 if the value of x isdecreased by 3, how will the value of y change?

*asked by Jamie on September 20, 2010* -
## algebra

state the slope of line given the equation y=2/3x+6

*asked by jerry on March 1, 2010* -
## Geometry

which is the equation of a circle with center (5, -2) and a radius of 3?

*asked by Kat on May 31, 2018* -
## maths

solve the equation using cramer's rule. 3x+2y=12 and 2x+3y=7

*asked by Joseph on May 27, 2018* -
## algebra

What number is used to complete the square for the equation x^2 + 5x = 0? a) 25 b) 6.25 c) 2.5 d) 10 d

*asked by ant on June 4, 2010* -
## algebra

Find the root (solve) of each equation. a)1/3 (2w-6)=-10 b)3a-7/4=4a+5/3 c)3k/2-k+3/3=8-k+2/4

*asked by bev on October 27, 2009* -
## Amos

What is the chemcal equation between ethanethiol and methoxide anyone?

*asked by Rani on December 11, 2016* -
## algebra 1

An equation is not a function if even one x value produces ____ corresponding y value(s). a. one b. less than one c. more than one d. zero for a Is it A?

*asked by Toni on May 18, 2010* -
## Math

What number makes the equation true? + 29 = 98

*asked by Aniyah Holmes on November 19, 2018* -
## Catholic university of Cameroon bamenda

Mk y the subject of the equation 100x-500y-5x^2-5y^2=0

*asked by aristide on November 17, 2015* -
## intermidate algebra

solve equation(rational expression) 3/10=5/x 3x=50 x=50/3 x=16 2/3 is this right.

*asked by Keaton on May 18, 2010* -
## Math.

Solve the linear equation. 14x−1/2(4x+6)=3(x−4)−18

*asked by April Martinez. on December 12, 2016* -
## Algebra

Write an equation of the line that passes through (8, 3) and (4, 3).

*asked by joshua on January 5, 2011* -
## math

How can you use an equation to make a prediction from a pattern?

*asked by erica on August 30, 2018* -
## math

how do you determine an equation in a line of best fit?

*asked by Ted on May 18, 2010* -
## Calculus

Write the following equation in logarithmic form a^(4b-6)=3c+d

*asked by Lexy on November 27, 2018* -
## math/equation/Paul

I meant is 12 the correct answer to the equation 4+8[9/3(9-6)]

*asked by Christ on January 4, 2010* -
## Calculus Please Help

Let f(x) = x^3 - x^2 + x - 1. Find an equation for tangent line to f at x = 2.

*asked by Cecille on March 23, 2011* -
## Science

What is equation between ethanethiol and methoxide ion?

*asked by Cheyenne on December 11, 2016* -
## math lit

complete the ordered pair for the equation (__, 15)

*asked by T on December 9, 2016* -
## MATH

solve each system of equation by elimination: a. 3x-4=y, 3x=y+6 b. 2x=y+1, y=6-3x c. x=5y+5, 3x=7-y Thank you :))

*asked by Camz on February 24, 2016* -
## precalculus

can you explain what the equation y = a(x - h)2 + k, a ≠ 0 means and what it represents?

*asked by Benjamin on December 5, 2016* -
## Calc 3

The plane containing the lines r1(t)=⟨1,−4,−1⟩+t⟨1,2,−2⟩ and r2(t)=⟨1,−4,−1⟩+t⟨1,0,3⟩ has scalar equation

*asked by ally on September 11, 2018* -
## to reiny

so would my equation be: d^2 + 3^2=6^2 d^2 + 9=36 d^2=27 d=square root of 27? d=5.197 or 5.2?

*asked by Lauren on December 5, 2009* -
## Math

What is the equation of the parabola with x-intercepts 1 and 3, and that passes through (–1, 16)

*asked by XOXOX on November 22, 2015* -
## Algebra 2

I don't know if I did this equation right.. ln 6x (greater than or = to) 4 I got 9.0997

*asked by Ana on March 9, 2010* -
## math

(2+3)+(3+4) = (3+4)+(2+3) does this equation demonstrate the commutative property? why or why not?

*asked by Joe Joe on September 16, 2010* -
## Math

If i'm given the equation 4.23= -.19t^2+2.56t-2.37 how do i find the value of t?

*asked by Isabel on August 22, 2010* -
## Math

y = -6 when x = -2 y varie directly with x. what equation relates x and y? x/y = -2/-6

*asked by Jasmine on June 3, 2007* -
## algebra

What is the equation for the line with a slope of 7 and a y-intercept of -1 ?

*asked by Jack on September 19, 2016* -
## MATH

Which ordered pairs are solutions to the equation? y = 3x – 4 A. (11, 5) and (2, 2) B. (5, 11) and (3, 2) C. (5, 11) and (2, 3) D. (5, 11) and (2, 2)

*asked by KYLIE on February 23, 2016* -
## Chemistry

H2O2 → H2O + O2 is this a balanced equation?

*asked by Person on December 2, 2017* -
## Math

Graph the Equation x=-2 What of I do after this step 0x+1y=-2 1x+0y=-2 I am really confused

*asked by Standard on December 8, 2016* -
## Algebra

Write an equation of the line that passes through (8, 3) and (4, 3).

*asked by joshua on January 5, 2011* -
## college algebra

Write equation in slope form y+3= -3(x-6)

*asked by BJ on April 23, 2010* -
## Calculus Please Help

Let f(x) = x^3 - x^2 + x - 1. Find an equation for tangent line to f at x = 2.

*asked by Abi on March 23, 2011* -
## Math

Solve the equation. 1. y-5/3 =1 A -2 *** B 8 C 18 D 6 2. 6x + 29 =5 A -4 B -18 ** C 204 D -144

*asked by Louis on September 18, 2016* -
## Algebra

Is there an instance when a linear equation is not a function?

*asked by Anonymous on April 20, 2010* -
## math

solve quadratic equation by factoring 5x^2-6x-11=-3

*asked by jerson on April 18, 2010* -
## math

Which choice is equivalent to the equation -4(x+b)=p+8b A: x=p+7b-4 B: x=-4p-28b C: x=-1/4p+b D: x=-1/4p-3b

*asked by Gg on September 18, 2016* -
## Algebra

how to plot the equation and find the y intersect of y + x = -10 thank you

*asked by Diana on October 7, 2009* -
## range and domain

whats the domain and range of the equation 2x^2+2y^2-20=0

*asked by asim on November 10, 2010* -
## Math

y - 5 / 3 = 1 Could someone help me solve this equation? I'm stuck and I need an explanation on how to get it, please and thank you. (:

*asked by ShookySuga on December 7, 2018* -
## Math

Which ordered pairs are solutions to the equation? y = 2x + 5 A. (5, 15) and (2, 9) B. (5, 10) and (2, 9) C. (15, 5) and (2, 9) D. (5, 15) and (9, 2)

*asked by Anonymous on February 26, 2016* -
## Math help Mrs.Sue

Which ordered pairs are solutions to the equation? y = 2x + 5 A. (5, 15) and (2, 9) B. (5, 10) and (2, 9) C. (15, 5) and (2, 9) D. (5, 15) and (9, 2)

*asked by Anonymous on February 26, 2016* -
## Math

The roots of the quadratic equation z^2 + az + b = 0 are 2 - 3i and 2 + 3i. What is a+b? Can you please help me with this question?

*asked by Joshua on January 3, 2017* -
## Algebra

What is the slope and y-intercept of the equation? Y=7/10x-4

*asked by Guesshwyalolll on February 26, 2016* -
## 11th grade

What is the balanced chemical equation for P+H2>PH3?

*asked by Butt on December 3, 2009* -
## math

Rewrite each equation to isolate the indicated variable. y = 9x + 2 for x df = g - 10 for d

*asked by Tori on December 8, 2017* -
## algebra

In which direction does the parabola that is given by the equation below open? y = -4.5(x - 6)2 + 1

*asked by Tamra on January 6, 2010* -
## Linear EQUATIONS

Need help! Graph the equation and identify the y intercept. Y = 1/5 x THANK YOU!

*asked by Jessica on November 12, 2010* -
## Vectors/Calc

Find values of a, b, and c which satisfies the following equation: a(2,1,0) + b(-3,4,5) + c(2,0,3)= (-4,10,7)

*asked by Anonymous on May 23, 2011* -
## Physics

solve for h in the equation for density P= M/V and V= pi r squared h

*asked by tom on August 28, 2018* -
## Algebra HELP!

how would I solve this on a equation to graph and what would my slope be? -3x-2y=18 and 3x-y=0

*asked by Alea on November 12, 2015* -
## Math

Write an equation that is parallel to the line y=-2x+4

*asked by Aria on December 20, 2016* -
## Algebra

Determine whether x is positive or negative in the following equation: x-|x|=0

*asked by Derek Schader on August 25, 2018* -
## Algebra

how would I solve this on a equation to graph and what would my slope be? -3x-2y=18 and 3x-y=0

*asked by Alea on November 12, 2015* -
## Math

Use an equation to solve the problem. What is 57% of 11? A. 11 = 0.57 • n; 19.3 B. n = 57 • 11; 627 C. n = 0.57 • 11; 6.27 D. 11 = 57 • n; 0.19

*asked by Anonymous on November 27, 2018* -
## math

2/27(x-3)√((x^2-6x+23)/y)rearrange the equation to make y the subject

*asked by alan on May 25, 2011* -
## Algebra

Write the equation y - 2 = 4(x + 5) in standard form

*asked by joshua on January 5, 2011* -
## Math

How do I find the equation of a tangent of y=cos(2x+(pi)/3) at x=(pi)/4

*asked by Kayla on August 17, 2010* -
## Intro to Chemistry

How do balance this equation K2S+CuSO4

*asked by Ariel on October 8, 2009* -
## Math

I have to factor this equation, which is a perfect square: 2p^2+4p+1 How do I do this?

*asked by Anya on October 29, 2009* -
## math

Solve the system x^2+(y-3)^2-9=0 x+y-1=0 Substitute 1-x for y in the first equation. x^2 + (x+2)^2 = 9 4x + 4 = 9 Take it from there

*asked by Angie on March 5, 2007* -
## calculus

solve the following differential equation: y' + (y)tanh(x) - 2e^x = 0

*asked by Christine on May 7, 2008* -
## Science

The word equation for Iron and Sulphur

*asked by Daphne on October 29, 2011* -
## Algebra 1

Without solving the equation -3x+5=44, tell whether the value of x is positive or negative. How do you know?

*asked by Mercedez on October 29, 2011* -
## Math

Given f(5) = 5 and f(9) = -2 determine the equation of the linear function f

*asked by Anonymous on February 23, 2015* -
## Math

How to make an equation out of 0,5 and -3,-4 on a coordinate plane

*asked by Coleson on October 9, 2014* -
## Algebra 2

Solve the equation x^3 - 3x^2-22x+24=0 do you use a graph?

*asked by Nancy on February 22, 2015* -
## Math

How to make an equation out of 3,3 and 0,1 on a coordinate plane

*asked by Coleson on October 9, 2014* -
## math

what is the general equation for half-life?

*asked by Anonymous on February 15, 2008* -
## Algebra

What are the slope and the y-intercept of the graph of the equation 4x-2y=5?

*asked by randi on May 18, 2009* -
## Linear equation

Graph each equation by making a table. Y = 4

*asked by Ashley on November 29, 2012* -
## AAlgebra 1

Graph each equation by making a table. Y = 4

*asked by Ashley on November 29, 2012* -
## Algebra 2

solve the equation x^2 - 3x^2-22x+24=0 do you use a graph?

*asked by Nancy on February 22, 2015* -
## math

Can you please give me a example of a - and + multi step equation

*asked by Ethan on January 19, 2012* -
## Linear equation

Graph each equation by making a table. Y = 4

*asked by Ashley on November 29, 2012* -
## Math

How would I solve this equation? -11p^6r^4 ---------- (-2p^4)^3 (-10p^5r^4)

*asked by Yvette on November 28, 2007* -
## Math

Is there another way to write this equation? y=35.15e^1.04x

*asked by Anonymous on October 15, 2014* -
## Math

Find the slope of the line described by each equation 7x-6y=42

*asked by Coleson on October 8, 2014* -
## Physics

How can one solve this equation for t? Y = 1.3 + 18.8 t - (g/2) t^2 = 0 (Assume g = 9.8 m/s^2, the value on Earth)

*asked by Anonymous on January 21, 2012* -
## algebra 1

how do you solve this equation with the substitution method. 1) 6x + 4y = 6/5

*asked by debbie on August 21, 2012* -
## Math

How do you do an equation of line perpendicular through y-intercept?

*asked by Hannah on December 1, 2013* -
## 9th grade

solve the rational equation 4/x-2=x/12 would the answer be -1,3

*asked by nicky on August 22, 2008* -
## pre-calculus

equation for parabola with focus (8,-2) directrix x=4

*asked by phill on June 2, 2013* -
## Math

Find an equation for the line that contains the points (2, -3) and (6, 9).

*asked by Brian on June 2, 2013* -
## Algebra

Rewrite the equation 2x+4y+2=3y+5 in general form. A.2x+y-3=0 C.2x+y=3 B.y=-2x+3 D.2x+7y+7=0

*asked by denaa on August 22, 2012* -
## Math

The equation of a circle A(x^2+y^2)+Bx+Cy+9=0 that passes through (1,0), (2,-1) and (8,7). Find B. Thanks!

*asked by Vonne on August 23, 2012* -
## Math

Find the coordinates of the y-intercept for the given equation x+y=2

*asked by Lamar on January 22, 2012* -
## math

what is the answer to this systems of equation using elimination 2x+3y=11 and 3x+3y=18

*asked by malachi on December 13, 2010* -
## MATH 101

How do you solve system of equation problem. example x+3y=32 -3x+2y+3 and x+y=6 x-y=-9

*asked by Ann on October 26, 2011* -
## PHYSICS

what is the equation for bose einstien condensate?

*asked by lissa on October 27, 2011* -
## algr.2

solve for the equation or formula for the specified variable x+y-a=b,for y over Z

*asked by hannah on August 29, 2012* -
## algebra 1

Find the slope and y-intercept of the equation. y+3=-1/3x

*asked by jackson on October 27, 2011* -
## math

A number K increased by 10 is the same as 24 How would you write this as an equation

*asked by gamer65 on February 25, 2015*

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