1. Science helpppp

    1. Students planted three bean seeds. After several days, they observed that the seeds’ roots were growing downward into the soil. Which type of tropism were the roots displaying? (1 point) A) geotropism **** B) thigmotropism C) phototropism D)
  2. math

    Explain how to use the square roots of 144 and 169 to estimate the square root of 154. I NEED THE ANSWER TONIGHT!
  3. algebra,math,

    is this factorable its a trinomial: x^2+2x+3 No, not factorable in the real number system. b^2 -4ac is negative, so the roots are imaginary.
  4. Math

    Simlifying Rational Expressions Reduce to lowest terms, stating the restrictions on the variable. I really don't understand the whole cancelling out the factor thing, and not cancelling out the terms. As I was having lots of trouble with this stuff this is
  5. More Rational Exponents!

    1. The optimal height h of the letters of a message printed on pavement is given by the formula . Here, h= (0.00252d^(9/4))/e d is the distance of the driver from the letters and e is the height of the driver’s eye above the pavement. All of the
  6. Algebra

    I'm having trouble working out these problems. Could someone please assist? with this first one do I factor the x^2 + 3xy - 18y^2 first? x - 3y * x^2 + xy - 30y^2 / x^2 + 3xy - 18y^2 3a^3b^2 * 4a^2 + 2ab + b^2 8a^3 - b^3 12ab^4 3y + 12 / 9y+36 8y^3 16y^3
  7. Tough Math

    Suppose the ball was 3.24 feet above ground when it was hit, and that it reached a maximum height of approximately 102.51 feet when it had traveled a ground distance of approximately 214.26 feet. The ball lands after traveling a ground distance of
  8. algebra

    help me please im confused Consider the quadratic expression X^2 + 4x + c = 0. For what range of values does the equation have two complex roots? what am i doing here can someone show me step by step so i can at least try to do the other problems i have
  9. Math (Algebra)

    For each degree 17 polynomial f with real coefficients, let sf be the number of real roots (counted with multiplicity). Let S be the set of all possible values of sf. What is |S|?
  10. math help

    write the quadratic equation whose roots are -4 and -5 and whose leading coefficient is 5 use the letter x to represent the variable. use the quadratic formula to solve for x 4x^2-9x+3=0
  11. Math

    For how many ordered triples of positive real numbers (a,b,c), do the equations ax^2+2bx+c, bx^2+2cx+a and cx^2+2ax+b each have 2 distinct real roots?
  12. Algebra

    Help please-I'm doing something wrong- Solve 8x^2 + 6x + 5 = 0 I'm doing square roots and all the steps but it's not working out I come up with -0.38 + 0.5 and -0.38 - 0.5 But it's not right when I go to put it back in. Could you please show the
  13. Math

    For how many ordered triples of positive real numbers (a,b,c), do the equations ax^2+2bx+c, bx^2+2cx+a and cx^2+2ax+b each have 2 distinct real roots?
  14. science

    Bacteria in swelling on the roots of peanut plants convert blank gas from the air into compounds that the plants need to grow.
  15. Algebra2

    How do you get: Show that 0.00317 is a rational number by writing it as a quotient if integers. (the 317 has a line above it.) Please Help? Bob Pursley showed how to do that very question in an earlier post. Look back perhaps 2-3-4 days and you will find
  16. algerbra

    If 1 and –6 are two of the roots of 6x^4 + 31 x^3 − 33x^2 − 16x + 12, then what are the other two? A. 2 and 3/2 B. -1 and 6 C. 1/2 and -2/3 D. -2 and 2/3
  17. Math

    24 * 4 square root of 3 How do I multiply square roots?
  18. Math

    If 1 and –6 are two of the roots of 6x^4 + 31 x^3 − 33x^2 − 16x + 12, then what are the other two? A. 2 and 3/2 B. -1 and 6 C. 1/2 and -2/3 D. -2 and 2/3
  19. maths

    If the roots of the quadratic eqn x²+px+q=0 are tan 30° and tan 15° respectively, then the value of 2+q-p is-
  20. Math

    which two square roots are used to estimate 47? I think its the square root of 49 and 36.
  21. square roots

    Define the square root of a given number with the use of an example.
  22. Algebra

    If the roots of a quadratic equation are -2 and 3, the equation can be written as a.(x+2)(x+3)=0 b.(x-2)(x+3)=0 c.(x+2)(x-3)=0 d.(x-2)(x-3)=0
  23. math: is this done correctly

    There are 30 fish in a pond. We know that 13 of these fish are males, 4 of these males are salmon, and there are 8 salmon in the pond. What is the probability that a randomly chosen fish is a salmon, given that it is a male? I think they are just asking
  24. Math: please check

    There are 30 fish in a pond. We know that 13 of these fish are males, 4 of these males are salmon, and there are 8 salmon in the pond. What is the probability that a randomly chosen fish is a salmon, given that it is a male? I think they are just asking
  25. Algebra 1.

    Factor: 50r^8 – 32r^2 The caret symbol represents a power. 2r^2(25r^6+16)= 2r2(25r6+16) DrBob222 forgot a minus sign: 50r^8 – 32r^2 = 2r^2(25r^6 - 16) Then, inside the brackets, you see a difference of two squares: 25r^6 - 16 = X^2 - Y^2 with X = 5 r^3
  26. Algebra

    I can't recall how to simplify square roots and am stuck on the following problem: (-3a)x = √7x+3 x = -1/4 I am trying to solve for a (since this is part of a group of questions that feed of previous answers, I'm absolutely at a stand-still). Thanks in
  27. social studies

    can you give me words for theses greek roots: astro(a)- hydro(a)- hyper- hypo- path- phobia- phono- photo- polis(s),(t)- soph(o),(y)- syn-
  28. Algebra

    Hi I am learning about rational expression and so far I am pretty good at multiplying. My question is how do you divide? Here is a problem that I am having trouble with.. 6p-18 3p-9 ----- / ---- 9p p²+2p This is what I have so far 6(p-3) 3(p-3) ------ /
  29. algebra

    Reduce each rational expression to lowest terms. Assume that the variables represent only numbers for which the denominators are nonzero. 4x^2/2x^9
  30. where did bob go?

    can anyone simplify and multiply the rational expressions 10m/11p x 44p/20k x 15k/8m? and then explain it to me? have patience.
  31. ALG II

    Write each rational expression in simplest form and list the values of the variables for which the fraction is undefined. 1. x^2-7x+12/x^2+2x-15 2. 5y^2-20/y^2+4y+4 3. -7+7a/21a^2-21 4. 5(1-b)+15/b^2-16
  32. Math

    Add or subtract the following rational expressions. Be sure to look for factors before trying to determine a common denominator, and simplify your answers, if possible. 16x-12/4x^2+5x-6-3/x+2
  33. Math 222

    Please help me solve these two Rational Expressions? Sorry my addition sign does not work on my keyboard, so that is why I am using the word "plus". 1). g^2-6g-55 __________ g 2). k^3 plus k ___________ k^2 plus k-42
  34. Pre-Algebra, please help!

    which of these non terminating decimals can be converted into a rational number? a. 0626226222... b. 0.0020220222... c. 0.123123123...*** d. 0.898998999... Am I correct? Thank you!
  35. science

    Which option correctly describes the scientific way of thinking? (Select all that apply) rational skeptical practical empirical B,D?
  36. math

    Hello i am in class 6 and i have problem in some of the topics please can you explain me 1.Factors and Multiples 2.Integers 3.Rational numbers 4.Estimation and approximation Thank you.
  37. algebra

    Reduce each rational expression to lowest terms. Assume that the variables represent only numbers for which the denominators are nonzero. a^2-b^2/a-b
  38. math

    give reasons of solving rational exponent or radicals in terms of, addition, subtraction, multiplication and division.
  39. Math

    Explain why this statement is true: when simplifying rational expressions, we must cancel factors only, and not terms. Give an example using just numbers.
  40. Math 140

    p(x)=(5x^8)-(x^2)+100x-3 Write all possible rational zeroes, please show how you arrived at the answer. I just came up with this problem hope it works
  41. algebra

    a+ sqrt 2 = 7 Solve the question for both the exact irrational root and its rational approximation to the nearest tenth. THANK YOU FOR YOUR TIME AND HELP
  42. Algebra

    Reduce each rational expression to lowest terms. Assume that the variables represent only numbers for which the denominators are nonzero. (a^2-b^2)/(a-b)
  43. science

    Which option correctly describes the scientific way of thinking? (Select all that apply) skeptical empirical practical rational A,D?
  44. AED

    Explain why this statement is true: when simplifying rational expressions, we must cancel factors only, and not terms. Give an example using just numbers.
  45. algebra

    least common denominator for these two rational expressions. ( / stands for fraction bar and the ^ means it's squared. i don't understand these at all. a/ a^2-36 2a/a^2+5a-6
  46. math

    Simplify the rational expression in the form A/B. X^-2+X^-4. Express the final result in a single fraction using positive exponents only.
  47. math

    How can you tell if a number is rational or irrational? a) 3.215 (there is a line drawn over the 15) b.) square root 10 c) 0.143639854024 d)4.312 can you please explain what i need to look at to tell which is which?
  48. Algebra

    40 =15 x x - 20 This is a three part question>> first find the lcd method of solving this equations, and the second ones about cross-multiplying method to solve this equations ,The next question asked would the cross- multiplying method work for all
  49. Intro to Ethics

    I have to write a paper over an ethics topic. And I chose: Where do animals belong in the moral community? Should animals be seen as only having instrumental worth to humans, or do animals have some intrinsic worth? Should they be given any rights? Is it
  50. Calculus

    Suppose that ax^2 + bx + c is a quadratic polynomial and that the integration: Int 1/(ax^2 + bx + c) dx produces a function with neither a logarithmic or inverse tangent term. What does this tell you about the roots of the polynomial?
  51. quadratic equations - math

    Use any method to solve the following equations, giving your answers to 2 decimal places where necessary. If an equation has no real roots, state this is so. 1. x2-5x+7=0 2. (3x-4)=(4x-3)2
  52. algebra2

    What is the relationship between the degree of a polynomial and the number of zeros (roots) it posses? Be sure to explain in your answer how prime polynomials violate this relationship.
  53. Math

    Solve the equation by factoring, by finding square roots, or by completing the square. 4(x+8)^2=144 I'm not sure if I'm suppose to divide or multiply the 4 to both sides..
  54. HEALTH

    Dr bob's computerized records have been compromised by a virus, resulting in damages to patients. Which of the following is most true? a) Dr bob will not be liable. b) dr bob will be liable. c) dr bob won't be liable if the virus was introduced by someone
  55. Pre-Algrebra

    3. 2x^2+6x-7x+8-3x^2+1 A. 2x^2+x+9 B. -2x^2-x-9 C. -x^2-x+9 D. x^2+9 4. What are the coefficents in the polynomial 4x^2+3x-3 A. 4,-3,-3 B. 4,3 C. 4,3,3 D. -4,-3 6. (7x^2-x-2)-(6x^3+3) A. 6x^3-+7x^2-x-5 B. -6x^3+7x^2-x+1 C. -x^3-x-5 D. x^2-x+1 7. Suppose
  56. english

    hello admin,i have an english homework and i confuse with this question 1 robin still felt --------- of the accident several months later. a reaction b effects c affects d contraction and i answer a,is it wrong? 2 despite the peer pressure, jessica held
  57. calculus

    Could someone help me draw these vectors? These things confuse me. A force of 42 newtons acting on an object at an angle of 53 degrees with the ground A force of 342 lbs. acting on an object while a force of 454 pounds acts on the same object an angle of
  58. Social Studies

    1.How does the amazon region best support the people of Brazil? a.by serving as a main artery of transportation b.by supplying fertile land for farming c.by providing forest rich with resources d.by protecting them from the encroachment of other people.
  59. Social Studies

    What problems did Churchill point out in his speech that are believed to have their roots in the wartime conferences that gave rise to the problems of postwar Europe.
  60. Life sciences

    What are the biological terms of the following 1.finger-like outgrowths of the epidermir roots 2. scientist who specialise in the study of the annual rings of trees 3. the membrane around the vacuole 4. the building blocks of protein
  61. Math 222

    Posted by Tika on Monday, April 27, 2015 at 1:03pm. How do I write an quadratic equation whose roots are -1 and -2 and whose leading coefficient is 1. Sorry my equal key does not work blank equals 0
  62. Math

    Solve the equation using square roots 2x^2-128=0 A. -sqrt8, sqrt 8 B. -64 or 64 C. -8 or 8 D. No real number solutions I am stuck between A and C and i also have another problem similer to this one and its the same thing i am confused as do i leave the
  63. American Government

    Which of the following is an example of indirect lobbying? A. testifying before Congress B. writing speeches and legislation C. grass-roots-led phone calls and e-mail D. contacting White House officials i think its c
  64. Sociology

    A rational-legal authority figure would most likely be someone like a A. war chief B. principle of a school C. religious leader D. parent My guess is A
  65. Math

    Explain how you can tell (without graphing it) that the rational function r(x)= x^6 +10 / x^4+8x^2+15 has no x intercept and no horizontal, vertical, or slant asymptote. What is its end behaviour? Please help? thankq
  66. Math

    Design a rational function with the following characteristics: three real zeros, one of multiplicity 2; y-intercept 1; vertical asymptotes x=-2 and x=3; oblique asymptote y=2x+1.
  67. Algebra

    In the slideshow, Multiplication of rational expressions, located in Chapter 6, the answer results in x in the numerator and x – 5 in the denominator. True or False
  68. Algebra 2

    Can someone check my work please? I tried my best on all the problems but I still don't understand excluded values and how to simplify rational expressions. Thank you in advance for any help! 1)6x^5/2x^3 6/2 = 3 3x^5/x^3 x^5-x^3 = x^2 3x^2/1 2) (2x+4)+(x^2
  69. math-rational equations

    how do I solve 5/x-3+3/x+3=7x/x^2-9 please explain in detail, I am having trouble once I get to the part where I need to simplify. I have so far the LCD is x^2-9 then the equation changes to (x^2-9) 5/x-3+(x^2-9) 3/x+3=(x^2-9) 7x/x^2-9 or (x+3)*5(x-3)*3=7x
  70. Algebra

    Use method II to simplify the following complex rational expression. 5-13/x-2 divided by 6/x-2-7. I'm not sure if this is the proper set up, but it's suppose to be a division on top and bottom. Please if someone could help
  71. Math

    Design a rational function with the following characteristics: three real zeros, one of multiplicity 2; y-intercept 1; vertical asymptotes x=-2 and x=3; oblique asymptote y=2x+1.
  72. pre calc

    write the form of the partial decomposition for the given rational expression. Don't solve for constants: 8x+10/x^2+7x-18 please show work!
  73. maths(rational numbers)

    James uses 1/3 of his land for growing durians, 1/4 for guavas, 3/8 for bananas and 9 hectares for mangoes. what is the total area?
  74. Algebra II

    I am stuck on a rational division problem: x is squared minus 1 0ver 1 divided by x-1 over x + 5 = I hope you can help, Cathy It has been five, stupied, hours now!
  75. Algebra

    I need some help with this question I really don't understand it and some help going through this problem would be really appreciated :) Use the fact that a/b/c/d=a/b / c/d to simplify each rational expression. State any restrictions on the variables.
  76. MTH HELP

    5)Which property is illustrated by the following statement ? 3z+4=4+3z A)Associative property of addition B)Commutative property of multiplication C)Inverse property of multiplication D)commutative property of addition 12) What is the algebraic expression
  77. p

    A newly planted tree is supported against the wind by a rope tied to a stake in the ground, as shown in the figure below. The force of the wind, though distributed over the tree, is equivalent to a single force F, as shown in the figure. Find the tension
  78. science

    hi i want to ask you what does a root do to help plants grow? and what does a leave do to help a plant grow? could you please answer this queastion immediately? As I said to your later post, it is unrealistic to expect an immediate reply. However, you
  79. Kayla

    The Symbiotic relationship between rhzobium bacteria and the roots of plants in the legume family is an example of what? A. Symbiosis B. Nutrient storage C. Nutrient Absorption D. Anchorage E. Support
  80. Calculus/pre-trig

    Write the formula for the discriminant. State the types of roots for a quadratic equation, explaining how the discriminant helps you determine the type.
  81. government

    11. America’s founding principles have roots in: (Points : 5) beliefs about the proper use of war. commercial practices. systems of absolute rule. religious beliefs.
  82. Math

    Can you please help me with a math problem Suppose the ball was 3.24 feet above ground when it was hit, and that it reached a maximum height of approximately 102.51 feet when it had traveled a ground distance of approximately 214.26 feet. The ball lands
  83. Math

    How do you find a square root of a number that's not a perfect square? I'm very confused. The book doesn't explain it too well. You can approximate it or simplify it in terms of (products of) square roots of smaller numbers. E.g. consider sqrt[117] The
  84. Square roots

    3 square root 160
  85. square roots

    How do I figure out the square root of 90 over 2
  86. Pre Calc

    Write a quartic function that has roots that are 3+5i, -4 and 7 and f(-3)=53. I have tried it a bunch of times and can't seem to get it. (x-3+5i)(x-3-5i)(x+4)(x-7) I multiplied them together x^4-9x^3+24x^2+66x-952 I was a little unsure what f(-3)=53 means.
  87. government

    a lobbyist encourages parents to write letters to their representatives in congress in support of an education bill. this is an example of a. grass roots pressure b. PAC contributions c. a public interest group d. propoganda
  88. college algebra

    for the function g(x)=5x^6-3x^3+x^2-x, list the possible rational zeros of g(x) and then use synthetic division to factor g(x) completely. ***i'm confused, doesn't this problem need a constant?****
  89. Math Problems

    Hi! Someone was helping me with these yesterday but I really didn't get anywhere because I was still confused. So if someone else could help me, that would be great! Thanks! Directions: Write out the partial fraction decomposition of the following rational
  90. Math

    Does there exist a set S consisting of rational numbers with the following property: for every integer n there is a unique nonempty, finite subset of S, whose elements sum to n?
  91. Algebra

    Add and subtract the rational expressions as indicated. Be sure to express your answer in simplest form ((9)/(7x)) + ((1)/(2y)) -1 I got an aswer of (16y)/(7x+2y+1)) but when I submit it shows me as wrong. Can anyone help, thanks
  92. algebra

    State any real numbers that must be excluded from the domain of the rational expression. Enter your answers in increasing order. 6p2/p2−49
  93. Differential Equations

    Solve dy/dx = y/(2y-x) using rational substitution (using v=y/x) with the initial condition y(0)=1. I solved this problem and found C (the constant) to be undefined. That is not the correct answer.
  94. Algebra

    Trains A and B are traveling in the same direction on parallel tracks. Train A is traveling at 60 mph, train B is traveling at 70 mph. Train A passes the station at 10:15pm. If train B passes the same station at 10:45pm at what time will train B catch
  95. health

    If disclosure of PHI is permitted under HIPAA, what is disclosed? A. All information the particular doctor has on that patient B. Information the doctor thinks should be disclosed C. The minimum necessary to accomplish the purpose of the disclosure D.
  96. ml algebra

    Solve the equation x2 = 81 by finding square roots. *NOTE: Applicable to this and all other questions--For any solution that involves two answers, type one answer separated by a comma and then the other answer
  97. Trig

    A 30 degree central angle is in central position in a circle with a radius of 7 square roots of 5 (245). What are the coordinates of the point where the terminal ray intersects the cicrle?
  98. algebra

    simplify the following radical expression: sqrt x * sqrt x a) x b) sqrt x c) 2 d) no solution exists do you know any site that will help me with the square roots? thanks!
  99. math

    I need a little help on my math.Lesson 5: Square Roots and Irrational Numbers Math 7 B Unit 2: Measurement. on CONNECTIONS ACADEMY. PLEASE :-(
  100. math

    how do i estimate a square root of a number thats not a perfect square? Without using a calculator. Also, what are square roots? Im really confused