# 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 72

I'm supposed to write a paper on the "real" reason behind not running in the house. It's just why you think you shouldn't run in the house, just something funny nothing real. What should I say is the reason, that will make my class laugh?

asked by alice on January 7, 2009
2. ## Math - Possible or Potential rational zeros

List all possible (or potential) rational zeros for the polynomial below. Find all real zeros of the polynomial below and factor completely over the real numbers. Please show all of your work. f(x) = x^4 - 7x^3 - 3x^2 + 19x + 14

asked by CheezyReezy on June 1, 2011

For a parameter a, suppose u is the smallest positive real number such that 100cos^2u−100sin^2u=a+25 and v is the largest negative real number such that 25√3sinv−75cosv=a. For how many integer values of a is u+v non-negative?

asked by roronoa zoro on May 8, 2013
4. ## Math

I'm not sure how represent radicals, but here is the problem: -(sq root)-76 + (sq root)-125 It is my understanding that negative numbers do not have real-number square roots, so does that mean that this whole expression does not exist as a real number or

asked by ASD on September 8, 2010
5. ## math

use the rational zero theorem to find all the real zeros of the polynomial function. use the zeros to factor f over the real numbers: f(x)=4x^4+9x^3+30x^2+63x+14 I cant even find sample problems to help me figure this out. help me please?

asked by courtney on March 27, 2013
6. ## Physics

A 645-kg elevator starts from rest and reaches a cruising speed of 1.47 m/s after 3.13 seconds. It moved 2.75 m during that time. What average power (W) is delivered by the motor during the initial acceleration of the elevator during the first 3.13

asked by Casey on June 6, 2011
7. ## Math

okay so the equation is -4.9t^2 - 39.2t + 1.6 If the rockets explode at the highest point (which max height is 80 meters) One of the rockets is schedules to explode 2 minutes and 28 seconds into the program. When should the rocket be fired from the barge?

asked by Marisol on February 26, 2012
8. ## Math

okay so the equation is -4.9t^2 - 39.2t + 1.6 If the rockets explode at the highest point (which max height is 80 meters) One of the rockets is schedules to explode 2 minutes and 28 seconds into the program. When should the rocket be fired from the barge?

asked by Marisol on February 26, 2012
9. ## chemistry

ZnCl2(aq)+Na2CO3(s)--> ZnCO3(s)+NaCl (aq) Balance the chemical equation and state solid, liq, gas, aq properly to each compound Ok I have it balanced by 2 NaCl in the second part of the equation But now what is the total ionic and net ionic equations. I

asked by Ashley on November 29, 2011
10. ## Physics - angular acceleration

An object rotates about a fixed axis, and th angular position of a reference line on the object is given by THETA(t)=0.4e^2t, where THETA is in radians, and t is in seconds. [a.] what is the object's angular acceleration at t = 2 s? ..this is my work so

asked by COFFEE on April 8, 2007
11. ## algebra

Jimmy bought a car in January of 2010 worth $25, 500. He submitted the car for valuation in January 2015 and was told that its worth is now$20, 450. Assuming that the depreciation is linear. a) Find the rate at which the car is decreasing in value. Treat

asked by kianna on April 13, 2015
12. ## math a little less

celia writes the equation d=8t to represent the distance in miles d that bikers could travel in t hours at a speed of 8 miles per hour. make a table that shows the distance traveled every half hour,up to 5 hours if bkikers ride at this constant speed. how

asked by chemiii on October 2, 2006
13. ## Maths

a) Express f(theta) = 4cos theta - 6sin theta in the form r cos(theta + alpha) b) Hence find the general solution of the equation 4cos theta - 6sin theta =5 c) Hence, find the minimum value of the function 1/4+f( theta)

asked by Becky on April 23, 2019
14. ## Physics

A 2.1kg brass ball is transported to the Moon. a)What is the mass of the brass ball on the earth and on the moon? Wouldn't it be 2.1kg for the earth as well as for the moon? b)Determing the weight of thee brass ball on the earth. F_g=(G*m_ball*m_earth)/r^2

asked by Andrea on November 12, 2007

If the real money demand is greater than the real money supply, interest rates must rise to reach equilibrium in the money market as institutions sell bonds to obtain more money.

asked by jim on June 11, 2015

vivian sold her home through a real estate company. Vivial received $140,000 after she paid the real estate agent a 6% commission. What was the selling price of her home? asked by kat on September 8, 2008 17. ## Chem What is the pH of the resulting solution if 30.00 mL of 0.100M acetic acid is added to 10.00mL of 0.100 M NaOH? For acetic acid, Ka=0.000018. I know that NaOH is a strong base and acetic acid is a weak acid. What is the equation: C6H5COOH+NaOH C6H5COOH asked by Sarah on February 27, 2008 18. ## Algebra A painting is 18 inches wide. It is placed inside a frame with a border that is x inches wide. The total width of the painting and the frame is 24 inches. Create an equation to model the situation, and then solve the equation to find the width of the asked by Fading on October 13, 2016 19. ## Maths Line L1 has equation 2x -3y+12=0 Gradient of L1 is 2/3x The line L1 crosses the x axis at the point A and the y axis at the point B. The line L2 is perpendicular to L1 and passes through B. A) find and equation of L2 The line L2 crosses the x axis at the asked by Anonymous on October 9, 2015 20. ## Math (geometry) Line l is tangent to circle O at point P(3,4) where the center is located at (0,0). a. Find the radius of the circle. (I got 4) b. Give an equation of the circle. (I got x^2+y^2=16) c. Find the slope of line l. d. Give an equation of line l. asked by Emily on April 30, 2008 21. ## Math Consider the equation below. 1/5(x+2)+2x = 6x-10 Part A: Which property can be used to simplify the expression 1/5(x+2)? Answer _______________ Part B: Move all x-terms to one side of the equation and simplify. Show your work. Answer _______________ Part asked by Jayson Angole on March 31, 2013 22. ## science from the balanced equation 4NH3 +7O2 - 4NO2 + 6H2O. How many grams of oxygen are necessary to produce 4.50 moles of NO2? I think its 11 grams or 22 grams but im not sure. please help!! First the number of moles of O2, molesO2= (4/7) moles NO2 Notice those asked by Britney on March 18, 2007 23. ## math With regards to question J: The variables x and y are connected by the equation y = x2 - x - 5. Some corresponding values of x and y are given in the table below. x -4 -3 -2 -1 0 1 2 3 4 5 y 15 7 a -3 -5 b -3 1 7 15 (a) Calculate the values of a and b (b) asked by jun on January 24, 2011 24. ## chemistry in an experiment 5.00ml of 0.1440 mol L^1- aqueos KIO3 was reacted with an excess of aqueous iodide and the molecular iodine I2, Formed was titrated against 0.1000mol L^1- aqueous S2O3^2- the equation for the titration reaction is: I2(aq)+ 2 asked by Yulieth on November 17, 2011 25. ## Algebra 1 Mr. Jones got his car washed at super clean. The wash started at 1:55pm and ended at 2:05pm. It cost$7. Mr. Smith got his car washed at Super Clean for $12. the wash started at 9:30am and ended at 9:50 am. Write an equation for the line that represents asked by tom on December 5, 2012 26. ## Math Suppose the central Park Coffee Shop sells a cup of expresso for 2.00 and a cup of cappuccino for 2.50. On Friday Destiny sold 30 more cups of cappuccino than expresso for a total of 178.50, worth of expresso and cappuccino. How many cups of each were asked by Nadia on October 4, 2009 27. ## physics Two Children,A and B, fire identical 10g ball bearing from a catapult. The elastic band of each catapult is elastically extended by 0.10m and then released to fire a the ball bearings. Child A's elastic band has a spring constant of 144 N/m. Calculate the asked by Sam on March 18, 2017 28. ## Chemistry HW!!! 1. If I dilute 75 mL of 0.50 M CaF2 solution to a final volume of 375 mL, what will be the molarity of the resulting solution? 2. What will be the final volume of the solution be if I start with a 250 mL of 1.38 M MgCl2 solution to make a solution with a asked by Theresa on March 11, 2015 29. ## algebra2 state the number of positive real zeros, negative real zeros, and imaginary zeros for g(x) = 9x^3 - 7x^2 +10x - 4 asked by aisha on December 22, 2009 30. ## calculus use the rational zeros theorem to find all the real zeros of the polynomial. Use the zeros to factor f over the real numbers. f(x)=2x^3-x^2+2x-1 asked by Caylan on December 22, 2012 31. ## Algebra 1.Write an equation in point-slope form for the line through the given point with the given slope. (-10,-6);m=-5/8 A.y-6=-5/8(x-10) B.y-6=-5/8 (x+10)*** C.y+6=-5/8(x+10) D.y+10=-5/8(x+6) 2.The table shows the height of a plant as it grows. Which equation asked by GummyBears on December 4, 2015 32. ## Linear Algebra 1/ Prove that the set V=R+ ( the set of all positive real numbers) is a vector space with the following nonstandard operations: for any x,y belong to R+ & for any scalar c belong to R: x O+ ( +signal into circle) y=x.y (definition of vector addition) & c O asked by Tri N on March 6, 2011 33. ## fluid mechanics I have a 4" hose attached to a 2" nozzle, me resistance coeffient of the nozzle is .12, and the jet of water exiting the nozzle is 24.4 m/sec. The water is flowing from the 4" to the 2". What I am having trouble finding is Pressure 1 and the the velocity asked by rok_well on December 9, 2006 34. ## PreCal Find all real numbers x and y so I'm a bit confused with the y solution -2x-4+2yi=3x-2i 2yi=5x-2i+4 I know the answer is y = -5ix/2 - 2i - 1 so y = -1 But how do you go from 2yi = 5x - 2i + 4 to y = -5ix/2 - 2i - 1 asked by Terri on December 1, 2013 35. ## Math solve the equation 1. y-5/3=1 a) -2 asked by Anonymous on December 18, 2015 36. ## Math Which statement is false? A: Every integer is a real number. B: the number zero is a rational number. C: every irrational number is a real number. D: every real number is a rational number**** asked by Sara on September 29, 2015 37. ## pre-algebra Which statement is false? A. Every integer is a real number.**** B. The number zero is a rational number. C. Every irrational number is a real number. D. Every real number is a rational number. asked by BleakTuber on November 29, 2018 38. ## college algebra (maths 112) To conduct a new experiment, a scientist needs a 23% salt water solution. How much of a 13% solution must be mixed with 45 quarts of a 32% solution to get the proper solution? asked by Anonymous on February 24, 2011 39. ## Math A biologist has a 36% solution and a 14% solution of the same plant nutrient. How many cubic centimeters (cc) of each solution should be mixed to obtain a 25 cc of a 25% solution? I been looking at this for 2 hours please help asked by Please end my suffering PLEASE HELP on October 18, 2014 40. ## CHEMISTRY 1. How would you take 1L of an existing solution with a concentration of 1M and use it to make a new solution of 0.1 M? Be specific. 2. Would it be possible to easily create a 2 M solution from 100 mL of 1 M solution? Explain why or why not? asked by Anonymous on January 16, 2013 41. ## chemistry how many moles of solute are contained in each solution? 250 mL of a 0.55 M NaNO3 solution? 145 mL of a 4.0 M HNO3 solution? 6.5 L of a 2.5 M HCl solution? asked by cathy on April 11, 2010 42. ## Solution Making Suppose you start with a 5X solution A, and you want a final volume of 10ul of 1X solution. How much Solution A do you need? Can you please check my work not sure. I need 2 ul of solution A to 8 ul of H2O. 5/1=.2*10=2 asked by frank on February 23, 2015 43. ## Chemistry 1. How would you take 1L of an existing solution with a concentration of 1M and use it to make a new solution of 0.1 M? Be specific. 2. Would it be possible to easily create a 2 M solution from 100 mL of 1 M solution? Explain why or why not? asked by Anonymous on January 16, 2013 44. ## chem What volume of a 0.2 N NaoH solution do you expect to use in order to titrate 25ml (sample out of 250ml) of a 0.200 N oxalic acid solution? heeeelp! Equation is H2C2O4 + 2NaOH==> 2H2O + Na2C2O4 I assume that is 25.00 mL H2C2O4. milliequivalents(meq) NaOH = asked by Melba on September 26, 2006 45. ## physics consider a concave mirror with a focal length of 13.72cm, and the object distance is 6.86cm, i calculated and found the image distance to be -13.72cm and a magnification of 2 how would i describe the image. 1. virtual, inverted, larger 2. none of these 3. asked by Claudia on May 16, 2009 46. ## math help what or how would i solve the following i don't need the answer i want to do it but how would i solve this. Water pressure (p) in the ocean is 2.3 tons per square inch at a depth (d) of 2miles and 3.45 tons per square inch at depth of 3 miles. How do i asked by jasmine20 on January 13, 2007 47. ## Chemistry which of the following equations is the one represented by this experiment? Justify your answer by comparing the moles of iron consumed(Fe 0.139/0.0419= 3.32) and the moles of copper produced(Cu 0.0419/ 0.0419 =1) to the coefficients in the equation of asked by Ashley on August 7, 2010 48. ## algebra I need a step by step explanation on how to add these two equations 2x+3y=1 5x+3y=16 Subtract the first equation from the second. (Subtract left and right sides separately). This gives you 3x = 15 Then divide both sides by 3. x = 5 Pretty easy, huh? After asked by Tony on March 20, 2007 49. ## Calculus A festivals being planned. The planners need to enclose to adjacent 200 M^2 areas with fencing. They have budgeted$1000 for fencing. Fencing currently cost $10/meter. The diagram of the area is as follows: 1. Write an equation representing the total asked by Roygbiv on April 6, 2016 50. ## Physics A 5.0 cm real object is placed at a distance of 5.0 cm from a concave mirror of focal length 10 cm. Find the size of the image. A. 5 cm B. 10 cm C. 17 cm D. 20 cm I think it is B? A(n) _______ lens is used to produce a real image. A. convex B. concave C. asked by sophie on April 6, 2009 51. ## Chemistry 1) When calcium is reacted with cold water, the equation is as follows: - Ca(s) + H2O(l) -->Ca(OH)2(aq) + H2(g) Isn't Ca(OH)2 insoluble? Why is the state symbol aqueous? When I conducted the experiment in a test tube with cold water, I got a white asked by candy on January 31, 2009 52. ## Chemistry 2. The reaction can be described in words as follows: aluminum sulfate reacted with ammonium hydroxide forming the insoluble product or precipitate, aluminum hydroxide and the water-soluble ammonium sulfate. The chemical equation can be written as follows asked by Jerry on June 24, 2018 53. ## chem For the reaction 3NO2 + H2O  2HNO3 + NO, how many grams of HNO3 can form when 1.00 g of NO2 and 2.25 g of H2O are allowed to react? This is a limiting reagent problem. 1. Write the equation. You have done that and it is balanced. 2. Convert 1.00 g NO2 and asked by meghan on February 28, 2007 54. ## Math Determine whether each equation is true for all x for which both sides of the equation are defined. If it is true, support your conclusion with a sketch using the unit circle. If it is false, give a counterexample. inverse sin(-x)=-inverse sin(x) inverse asked by Anonymous on May 25, 2009 55. ## chemistry Q: Calculate the pH of a solution that is 0.56 M HC3H5O3 and 1.28 M NaC3H5O3. I used the H-H equation for this and got this so far: HC3H5O3 acid NaC3H5O3 base pH = pKa + log([NaC3H5O3]/[HC3H5O3]) = -log(Ka of HC3H5O3) + log(1.28/0.56) = -log(1.4*10^-4) + asked by . on March 18, 2019 56. ## Physics A long thin rod lies along the x-axis from the origin to x=L, with L= 0.830 m. The mass per unit length,$\lambda$(in kg/m) varies according to the equation$ \lambda = \lambda_0 (1+1.110x^3). The value of $\lambda_0$ is 0.200 kg/m and x is in meters.

asked by Kid on August 24, 2017
57. ## Chem

Some ethylene glycol, HOCH2CH2OH, is added to your car's cooling system along with 4.4 kg of water. If the freezing point of the water-glycol solution is -15.0°C, how many grams of HOCH2CH2OH must have been added? I used the equation: 15 celcius = 1 x

asked by Mark on March 23, 2011

1. Which ordered pair is not a solution of y = –12x – 3? (–3, 33) (8, –98) (–9, 105) (3, –39)* 2. Find three solutions of the equation. y = 2x – 6 (–2, –10), (1, –4), (2, –1) (–2, –10), (1, –4), (0, –6)* (0, –6), (3, –2),

asked by makaly on April 19, 2015
59. ## 7TH MATH HELP

1. Which ordered pair is not a solution of y = –12x – 3? (–3, 33) (8, –98) (–9, 105) (3, –39)* 2. Find three solutions of the equation. y = 2x – 6 (–2, –10), (1, –4), (2, –1) (–2, –10), (1, –4), (0, –6)* (0, –6), (3, –2),

asked by HELP PLZZZ on April 19, 2015
60. ## math

Translate the following English sentence into a symbolic sentence with quantifiers: Between any integer and any larger integer, there is a real number. (universe is real numbers)

asked by Meg on January 29, 2011
61. ## Language Art (Please Check)

i think C. Which of these is true of both historical fiction and historical nonfiction? A.the setting is real B.the plot is imaginary C.The time period is true D.the characters are real

asked by matt on April 10, 2014
62. ## Chemistry

What is the molarity of the final solution if 2.00mL of the 5.00 M stock solution is diluted to 10.00mL to make solution A? Solution A then undergoes a second dilution by taking 3.00mL solution A and diluting it to 25mL.

asked by Chem on November 15, 2016
63. ## 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

asked by jasmine20 on April 14, 2007
64. ## Physics- just verfiying an equation

hello, so i'm doing a physics project where I have found the following equation for centripetal force: Fcent=mrù^2 Where f= centripetal force m=mass r=radius ù=angular velocity my question is to make centripetal force greater, does that mean mass, radius

asked by Jesse on January 9, 2016
65. ## algebra

trains a&B are traveling in the same direction on parallel tracks. train a is traveling at 60 miles per hour and train b is traveling at 70 miles per hour. train a passes a station at 3:15a.m. if train b passes a station at 3:45a.m., what time will train b

asked by anonymous on August 30, 2009
66. ## Algebra

A phone company has a monthly data plan where a customer pays flat monthly fee of $20 and then a certain amount of money per gigabyte (GB) of data used on the phone. If a customer uses 3 GB, the monthly cost will be$26. If the customer uses 4 GB, the

asked by Laisha on October 12, 2018
67. ## Pre calculus/ Advanced Functions

Samuel is investigating the rate of change of the function f(x) = cos x on the interval xE[0, 2pi]. He notices that the graph of f(x) passes through the x-axis at pi/2. He also determines the instantaneous rate of change at x = 0, pi and 2pi by inspection.

asked by Anonymous on June 9, 2015
68. ## Physics

The temperature of 2.0 g of helium is increased at constant volume by ΔT. What mass of oxygen can have its temperature increased by the same amount at constant volume using the same amount of heat? I know for constant volume I should use the equation:

asked by Joshua on December 2, 2015
69. ## calculus

a small business owner buys a truck for $20,000 to transport supplies for her business. She anticipates that she will use the truck for 5 years and that the truck will be worth$10,000 in 5 years. She plans to claim a depreciation tax credit using the

asked by Greg on August 2, 2014
70. ## Analytical chemistry

A 25.0-mL solution of 0.0660 M EDTA was added to a 33.0-mL sample containing an unknown concentration of V3 . All V3 present formed a complex, leaving excess EDTA in solution. This solution was back-titrated with a 0.0450 M Ga3 solution until all the EDTA

asked by Ashley on April 4, 2013
71. ## Math

(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. Math(Please answer, thank you) - bobpursley, Sunday,

asked by Hannah on March 25, 2012
72. ## math algebra 1

just need a little help Task 2 John, Rick, and Molli paint a room together. a. Pick a reasonable amount of time in which the three friends can paint the room together. Also pick a reasonable amount of time in which John can paint the room alone and a

asked by Soji on May 4, 2018
73. ## Chemistry

I'm not sure how to find a linear equation for this problem. One common flow measurement device is the orifice meter, which consists of a disk with a machined hole. It is placed as an obstruction to flow in a pipe, causing pressure drop to occur as the

asked by Angel on December 14, 2011

Last year, Mark was 46 inches tall. This year, Mark's height is 3 inches less than Pter's height. Peter is 51 inches tall. How tall is Mark? Write an equation to represent the situation. Then solve the equation. Answer: 51-3=I I=48 inches tall I=number of

asked by Javonte on January 14, 2015
75. ## calculus

The differential equation below models the temperature of a 87°C cup of coffee in a 17°C room, where it is known that the coffee cools at a rate of 1°C per minute when its temperature is 67°C. Solve the differential equation to find an expression for

asked by alex on April 27, 2017
76. ## MATH (PLZ HELP) !!

Task 1. You want to start a summer business to earn money. What will you do? You have to consider how much money you can afford to invest in this business how much it will cost you to make each item and how much you're going to charge for each item.

asked by 0GGG on November 7, 2017
77. ## Physics

A 24.00 kg block at rest on a horizontal frictionless air track is connected to the wall via a spring. The equilibrium position of the mass is defined to be at x=0. Somebody pushes the mass to the position x=0.3500 m, then lets it go. The mass undergoes

asked by Liz on November 8, 2014
78. ## Chemistry

Determine the identity of an unknown solution that formed a yellow precipitate with solution 1, No Reaction with solution 2, No Reaction with solution 3, and a canary yellow solution with solution 4?

asked by Tiffany on May 1, 2012
79. ## Math

I am still confused! Equation: C1V1=C2V2 Given: C1= 15 mM V1=? C2= 0.25 mM V2= 1mL (Do I just plug 1mL into the equation or do I have to convert to liter? Does mM mean mmol/1L?) I got ~17 microliter. Note: I must convert my answer to microliter. Math -

asked by Vivian on January 15, 2017
80. ## physics

1. The acceleration due to gravity calculated this way works well for objects near the Earth’s surface. How would you have to change the above equation if the object was 100,000 meters above the ground? (Note: this question refers to Newton’s equation

asked by Anonymous on August 21, 2011
81. ## physics

1. The acceleration due to gravity calculated this way works well for objects near the Earth’s surface. How would you have to change the above equation if the object was 100,000 meters above the ground? (Note: this question refers to Newton’s equation

asked by Anika on January 24, 2014
82. ## Econ

When considering economic growth, many policy makers focus on real GDP per capita since it takes into account the potentially distorting effects of ______________ and ________________. Any large, sustainable increase in real GDP must be the result of

asked by Rebekah on February 18, 2014
83. ## Chemistry

25.0 cm cubed of Barium hydroxide,Ba(OH)2 solution neautralises 35.0 cm cubed of aqueous hydrochloric acid of concentration 0.09 mol dm-3. what is the concentration of the barium hydroxide? I like the titration equation

asked by Laura on November 5, 2006
84. ## Bio

How much solute is required to make 600mL of a 0.4 M solution of Tris buffer? FW of Tris Buffer= 121.1g Work: Molarity equation= moles of solute/ liters of solution Step 1: 121.1 g / 121.14 g/mol TB = 0.9996 mol TB Step 2: Molarity Eq'n= moles of solute/

asked by Cindy on January 30, 2018
85. ## math stumped...

is the solution of 1/3x=21? greater than or less than 21? the volume F of the cylinder is 65n cubic centimeters. the height of the cylinder is 5 centimeters. use the vomula v=Bh to find the area of the base of the cylinder? the total area of triangle is 44

asked by scooby on September 8, 2013
86. ## Algebra 2

a computer manufacturer needs to change the dimensions of its foam packaging for a new model of computer. the width of the original piece is three times the height, and he length is equal to the height squared. The volume of the new piece can be

asked by Jane on January 24, 2010
87. ## math

If cos(3 x)6Ó14 x e^2 y=0, find [ dy/dx] using implicit differentiation. In this problem, you should differentiate both sides of this equation with respect to x. First, using implicit differentiation, differentiate the left side of the equation with

asked by Zhao on September 30, 2012
88. ## math

Translate to an equation p $25 potted plants and s$20 shrubs total $300,graph the equation and use the graph to determine three different combination of potted plants and shrubs that total$300?

asked by Diane on July 30, 2011
89. ## math

Translate to an equation: p $25 potted plants and s$20 shrubs total $300 Graph the equation and use the graph to determine three different combinations of potted plants and shrubs that total$300.

asked by mary on July 17, 2011
90. ## math math

Translate to an equation: p $25 potted plants and s$20 shrubs total $300 Graph the equation and use the graph to determine three different combinations of potted plants and shrubs that total$300

asked by mary on July 17, 2011
91. ## math

Of the 50 state in the united state, 8 states have a population of one million people or fewer.Make a plan and write an addition equation to show that the sum of the state with more than one million people and the states whith one million people or fewer

asked by Anonymous on November 16, 2011
92. ## Chemistry

Please could someone advise me on how to write a balanced equation for the breakdown off H2SeO3. The solution is dissolved in water and conducts electricity. I know the charged ion present is H+ I am struggling to work it out and indentify the other ion

asked by Lucy on January 27, 2007
93. ## Math

The population of a town is modelled by P=-0.1x^2+1.2x+4.4 where x is the number of years since the year 2000, and y is the population in thousands. a) In the year 2005, what is the population? I used the equation, put x=5 and I got 7900 as the

asked by Sarah on October 9, 2017
94. ## Math

We all need help on this. The population of a town is modelled by P=-0.1x^2+1.2x+4.4 where x is the number of years since the year 2000, and y is the population in thousands.  a) In the year 2005, what is the population?  I used the equation, put x=5 and

asked by Sarah/Juliet/ Rameen on October 9, 2017
95. ## PreCalculus

Problem: Identify the conic from the equation 13x^2-6(sq.rt.6)xy+7y^2-16=0 I have to choose from the following four answers: hyperbola (angle of rotation 45) hyperbla (angle of rotation 60) ellipse (angle of rotation 90) ellipse (angle of rotation 30) I

asked by Joanie on March 30, 2009
96. ## Algebra II

State the number of positive real zeros, negative real zeros, and imaginary zeros for g(x)= 9x3 -7x2+10x-4. Since there were 3 sign changes I have 3 positive real zeros. For g(-x)= I have -9x3-7x2-10x-4. There were no sign changes so I have no negative

asked by Lucy on February 17, 2008
97. ## Chemistry

By using the data in this question, estimate how much oxygen a person requires on average in a life time and how far a motor can go using the same amount of oxygen. the typical daily food requirement of a person can be considered to be 1.2 kg of

asked by Cherie on June 3, 2012
98. ## chemistry

By using the data in this question, estimate how much oxygen a person requires on average in a life time and how far a motor can go using the same amount of oxygen. the typical daily food requirement of a person can be considered to be 1.2 kg of

asked by Anonymous on June 3, 2012
99. ## Algebra

I have an assignment due tonight and I believe I have solved it all correctly until I come to part d of the question. "For what value is this equation undefined?" How do I determine this? The Environment Environmental and wildlife preservation ensures

asked by James on March 8, 2009
100. ## Algebra

Taking a road trip with your family, you get onto the intersate at mile marker 150 driving east (where mile marker numbers increase) at 50 miles per hour. Write and equation relating the total miles, m, from your state line (which is mile maker 0) to the

asked by Hayden on November 15, 2018