Questions and responses by samantha, page 7
  1. algebra

    An investor invested a total of $500 in two mutual funds. One fund earned a 8% profit while the other earned a 4% profit. If the investor's total profit was $32, how much was invested in each mutual fund? The amount invested in the mutual fund that earned

    asked on November 16, 2012
  2. Chemistry

    if there are 8.3grams of Mg used, how many moles of MgO can you expect to be produced?

    asked on October 3, 2012
  3. college statistic

    A sample of 51 night-school students' ages is obtained in order to estimate the mean age of night-school students. x = 26 years. The population variance is 19. (a) Give a point estimate for μ. (Give your answer correct to one decimal place.) (b) Find the

    asked on July 23, 2012
  4. math

    Solve the following problem. Round answer to two decimal places when necessary. I=240 W=1/3 A=1*W A=

    asked on July 2, 2012
  5. algerbra 2

    What did the baby pocupine say when it backed into a cactus?

    asked on May 13, 2012
  6. History

    Q: Which governmental position was NOT held by James F. Byrnes? Choices are: A. U.S. Secretary of State B. U.S. Supreme Court justice C. governor of South Carolina D. vice president of the United States

    asked on April 15, 2012
  7. History

    Q: What action did the United States NOT take against Japan before the attack on Pearl Harbor? Choices are: A. cut off the sale of oil and metal to Japan B. sent the Japanese ambassador back to Japan C. froze all the Japanese assets in the United States D.

    asked on April 15, 2012
  8. Calculus

    Let L1 be the line with the vector equation r= (-2,3) +s(-1,3), seR. Let L2 be with the line with parametric equation x=3t+2, y=t-7, teR. Are L1 and L2 perpendicular? How do you know?

    asked on April 8, 2012
  9. Western experience

    All of the following are late-twentieth century technological developments that have revolutionized communication except A) development of the world wide web B) development of the personal computer C) development of calculating machinery D) development of

    asked on April 3, 2012
  10. fun facts

    what are some fun facts on multitasking? if not that what are some websites to find good fun facts

    asked on March 25, 2012
  11. Science

    Which of the following conditions would likely cause the activation energy to be high? A. atoms are close together B. the temperature is hot C. atoms are not close together D. a catalyst is present.

    asked on March 8, 2012
  12. English

    Which of the following is punctuated correctly? Choices are: A. President Roosevelt described December 7, 1941 as a date which will live in infamy. B. President Roosevelt described December 7, 1941 as a date, which will live in infamy. C. President

    asked on February 16, 2012
  13. Science

    During beta-particle emission, a neutron splits into _______? a proton and an electron two protons two electrons two neutrons

    asked on February 14, 2012
  14. algebra

    How many solutions do the linear equations x-y=2 -2x+2y=-1 have?

    asked on February 11, 2012
  15. Pre-Algrebra

    Solve the equation. 78=-2(m+3)+m -1/3m-7=5 1/4y+9=1/2 x-9=-6x+5 x+9=5(4x-2) Can you please show me how you got your answer.

    asked on February 4, 2012
  16. Pre-Algrebra


    asked on January 23, 2012
  17. Pre-Algrebra

    How do you solve 5+2c/4=14

    asked on January 20, 2012
  18. Geography/History

    What is the role of the Catholic church in Latin America? All the articles that I found are so confusing. I don't understand anything that I found. I just need a general idea so I can answer all my questions. thank you

    asked on December 8, 2011
  19. English Quick ?

    Is my grammar correct in this sentence and should it be effect or affect? Thank you A year later, and I still haven't completely figured out how to deal with what I'm going through and not let it affect how I go about everything else.

    asked on November 13, 2011
  20. Science (8th grade)

    What are some living relatives of cyrtolite retrosus? (a kind of gastropod)

    asked on October 25, 2011
  21. psychology

    One common mistake made in a persuasive paper is taking one side to the extent that the writing becomes biased. How does a persuasive essay differ from a biased essay?

    asked on October 9, 2011
  22. writing

    Write one topic sentence for your Week Nine essay and explain the primary role of a topic sentence in an effective essay? My essay will be about "Most Americans should not use credit cards." The topic sentence I have is "Most Americans should not use

    asked on October 2, 2011

    What are 6 human adaptions to the environment in Angola, Africa? Thanks!! :)

    asked on September 19, 2011
  24. science

    so the relation between force and acceleration is that acceleration makes up force?

    asked on June 13, 2011
  25. physics

    A solid cylinder of radius 0.85m is released from rest from a height of 1.8m and rolls down the incline as shown. What is the linear speed of the cylinder when it reaches the horizontal surface?

    asked on June 2, 2011
  26. Chemistry

    What is the pH of a 0.0250 M solution of HCN? Ka = 4.0x10^-10

    asked on May 2, 2011
  27. pre-algebra

    a sweater originally cost $37.50. Last week, Moesha bought it at 20% off.How much was deducted from the original price

    asked on April 5, 2011
  28. social studies

    is roanoke the first colony? or is jamestown the first colony?

    asked on March 4, 2011
  29. Algebra 2

    If f(x)=3^2 g(x)= 1/6+x find the following and give the domain (f+g) (x) (3^2) + (1/6+x) x is all real numbers and x is not equal to 6 (f-g) (x) (3^2) - (1/6+x) 3^2 -6-x x is all real numbers and x is not equal to -6 (f x g) (x) I do not understand (f/g)

    asked on February 1, 2011
  30. math

    WHAT are the frist 10 composite numbers

    asked on January 12, 2011
  31. math

    A number divisible by another number when the ________ after division by that number is 0?

    asked on January 12, 2011
  32. discrete math

    Let A= {for all m that's an element of the integers | m=3k+7 for some k that's an element of positive integers}. Prove that A is countably infiite. Note: you must define a function from Z+ to A, and then prove that the function you definied is a bijection

    asked on December 4, 2010
  33. chemistry

    Most elements are stable with eight (8) valence electrons. True or False Elements react in order to gain, lose, or share electrons. True or False

    asked on November 29, 2010
  34. Math

    Kelly has a 2.89 GPA after 54 credits. She is taking 16 credits this quarter. What must her GPA be this quarter to raise her ovarall GPA to 3.0

    asked on November 22, 2010
  35. algebra HELP ASAP

    If $13,000 is deposited in a bank account paying 6% compounded quarterly, what amount will be in the account after 8 years? How much interest will be earned during the 8 years? The amount after 8 years will be $___ How much interest will be earned during

    asked on November 2, 2010
  36. Chemistry

    If you have red solution, at what wavelengths should it absorb light, at what wavelengths should it NOT absorb light?

    asked on November 1, 2010
  37. algebra 2

    A farmer wants to raise corn and soybean on a 2010 acre of crop land. Each acre of corn requires 2 hours of labor during growing season while each acre of soybean requires only 1 hour of labor. The total amount of hours of labor available during growing

    asked on October 31, 2010
  38. college algebra

    Use Descarte's rule of signs to discuss the possibilities for the roots of the equation. Do not solve the equation -5r^(4)+6r^(3)+9r-15=0

    asked on October 27, 2010
  39. Chemistry 106

    What are the elements used to make the ingrediants of each category (the same element may be listed in several categories, but a maximum of once in each of the 6 categories, no matter how many different ingrediants it may be in)? **name of the element with

    asked on October 26, 2010
  40. Algebra 1


    asked on October 26, 2010
  41. math

    Find all real and Imaginary solutions 7x^(3)+70x^(2)-x-10=0

    asked on October 26, 2010
  42. Math

    find all real and imaginary solutions x^(2/3)-2=x^(1/3)

    asked on October 21, 2010
  43. chemistry

    Calculate the number of moles of CaCO3 in 3.20g of Calcium Carbonate.

    asked on October 18, 2010
  44. Chemistry

    Congratulations! You have discovered a new element called Bhauzium (Bz). The average atomic mass of Bz was found to be 348.72 amu and its atomic number is 123. a) if the atomic masses of three isotopes of Bhsuzium are 342.92 amu, 356.43 amu (6.52%), and

    asked on October 14, 2010
  45. Physics

    a girl jumps off a high diving platform with a horizontal velocity of 2.77m/s and lands in the water 1.2s later the acceleration of gravity is 9.8m/s squared how high is the platform and how far from the base of the platform does she land?

    asked on September 28, 2010

    please help me explain this in 50 words.. Explain why the equation -6(x + 3) = -6x + 5 has no solution and 7x +18 + 8x = 8(x + 4) + 7x – 14 has infinitely many solutions.

    asked on March 8, 2010
  47. social studies

    your town or city is oing to have a culture fair. the fair will introduce people to new cultures. it will also introduce people to new cultures. it will also introduce people to diffferent culures within the United States. write a public service message

    asked on February 18, 2010
  48. Social Studies

    Why do you think people in one culture someimes do not understand people in anoher?

    asked on February 17, 2010
  49. metal engineering and maintenance

    what are the two classes of metals? explain what are the differences between iron and steel? differentiate between brass and bronze? give an application for each of the above?

    asked on November 26, 2009
  50. 6th grade social studies

    Forms of communications of the andes?

    asked on November 4, 2009
  51. math

    Part 1: Using the Library, web resources, and/or other materials, find a record-breaking temperature (in degrees Celsius) for a town or city in a country other than the United States. Include the name of the town and country along with the temperature, and

    asked on November 2, 2009
  52. Algebra1

    Sally bought some ordinary pencils and 4 times as many special pencils. Each ordinary pencil cost $0.20 and each special pencil cost $0.35. She spent $14.40. How many of each pencil did she buy? Please show me how you got your answer. Thank you.

    asked on October 5, 2009
  53. Math

    In how many ways can the word INITIAL be arranged? I know that if all the letters were different (aka ABCDEFG) then the answer would be 7!, and I think if two of the letters were the same (aka AABCDEF) then the answer for be 7!/2! (or maybe 7!/2?), but I'm

    asked on October 4, 2009
  54. Math

    Find the maximum value of g if g(x) = 7-8x-2x^2

    asked on October 4, 2009
  55. Statistics

    You want to compare the quality of several statistics textbooks. (a) Identify two categorical variables and two quantitative variables that you would use to describe textbook quality. Give a reason for each of your choices. So I think for the first

    asked on September 9, 2009
  56. Algebra 1

    Lately I just have blacked out in my algebra 1 class. Here's a equation on my worksheet, and I would be happy if you could show in steps how you got your answer. Thank you. (2x²+5x+3)-(x²+2x+1)

    asked on September 8, 2009
  57. Statistics

    during the month of July, an auto manufacturer gives its production employees a vacation period so it can tool up for the new model run. In surveying a simple random sample of 200 production workers, the personnel director finds that 38% of them plan to

    asked on July 26, 2009
  58. Statistics

    For the manufacturing plant discussed in Exercise 8.10, the union president and the human resources director jointly select a simple random sample of 36 employees to engage in a discussion with regard to the company’s work rules and overtime policies.

    asked on July 25, 2009
  59. Math (Algebra/Pre-Algebra)

    What is the x-intercept of the line with equation 2y + 3x = 24? What is the x-intercept and how do I find it? I have to show work. Thank you!

    asked on June 4, 2009
  60. Math (Algebra/Pre-Algebra)

    Which equation is an identity? a. 3x - 9 = 3x b. 4p + 7 = 7 + 4p c. 2w = 0 d. 5k = 5

    asked on June 4, 2009
  61. 9th grade

    1. when non-human things are given simple human characteristics, this is an example of what? 2. however, when non-human things are given the ability to think, talk, and act consciously like humans, that is an example of what? 3. in what point-of-view is

    asked on May 31, 2009
  62. Math :(

    When football was played in Florence, Italy, in 1530, there were 30 more layers on the field than there are in football games in the United States today. How many players were on the field for each team in 1530?

    asked on April 21, 2009
  63. Social Studies

    Describe the political, social, economic conditions in the U.S in the 1800's

    asked on April 19, 2009
  64. Language Arts

    _________ __________ help you "see" or "envision a play" (drama) you read. If you could help me out with this answer it will be well apriciated, thanks.

    asked on March 16, 2009
  65. maths

    how do i convert this decimal 5,2 into a common fraction

    asked on February 26, 2009
  66. Philosophy 130

    What ought you to do for a pregnant woman who asks your help in getting to the hospital, according to your understanding of the main ethical theories, i.e. egoism, universal consequentialism(utilitariansim), and Kantian deontological theory? Suggested

    asked on February 24, 2009
  67. French

    Can someone check my letter? We had to write it even though not all students got their letters for some reason, so it is kind of short. Also, can someone tell me some ways to add the future tense and the subjunctive a little more? I want to show what I

    asked on February 2, 2009
  68. algebra

    Trains A and B are traveling in the same direction on parallel tracks. Train A is traveling at 100 mph and train B is traveling at 110 mph. Train A passes a station at 3:10 pm. If train B passes the same station at 3:40pm, at what time will train B catch

    asked on January 7, 2009
  69. algebra

    On 3 consecutive passes, a football team gains 5 yards, loses 28 yards, and gains 41 yards. What number represents the total net yardage? 5-28+41 18

    asked on January 7, 2009
  70. Physics please help

    Given a simple pendulum of length r and mass m, determine the oscillation period T if the perturbation angle θ is very small (i.e. θ < 10degrees). How can I derive an equation for period using just that info?

    asked on November 17, 2008
  71. Physics

    Given a simple pendulum of length r and mass m, determine the oscillation period T if the perturbation angle θ is very small (i.e. θ < 10degrees). How can I derive an equation for period using just that info?

    asked on November 17, 2008
  72. Physics

    Given a simple pendulum of length r and mass m, determine the oscillation period T if the perturbation angle θ is very small (i.e. θ < 10degrees). How can I derive an equation for period using just that info?

    asked on November 17, 2008
  73. Pre-Algebra

    In a-c, explain what would happen to a figure if you transformed it using the given rule. a. (3x, 6y) b. (x+2, y+1) c. (2x, 2y +5)

    asked on November 9, 2008
  74. MATH

    How do you write an equation in standard form? Ex.How would you write this in standard form? y+1=x+2

    asked on November 6, 2008
  75. Calc again sorry

    4) The graph of y = (x)/(1+25x^2) for x is greater than or equal to 0 has a horizontal tangent at x = what. So what I did was find the first derivative. I did the quotient rule and ended up with x50x - 1+25x^2 --------------- (1+25x^2)^2 I equated that

    asked on November 5, 2008
  76. Calculus

    How do you do this question. f(x) = (5x-1)/(2-3x), find f^(-1)(x). The answer is supposed to be (1+2x)/(5+3x). -------------------------------------- And can you please explain this one to me. Suppose that xy^(3)+2y^(2)+xy+2x^(3) = 0. Find the general

    asked on November 5, 2008
  77. Calculus Part 2

    y = tan(sqrtx) Find dy/dx. So I found it and I got the answer as sec^2(sqrtx) but the answer is (sec^2(sqrtx))/2(sqrtx)...why? ---------------------------------- 2) Find the line which passes through the point (0, 1/4) and is tangent to the curve y=x^3 at

    asked on November 4, 2008
  78. Calculus

    Can someone explain the method of implicit differentiation to me. I know that we differentiation both sides of the equation with respect to x (I don't understand what they mean by with respect to x). And then y is a function of x...I don't understand what

    asked on November 3, 2008
  79. Calculus

    Can someone explain the method of implicit differentiation to me. I know that we differentiation both sides of the equation with respect to x (I don't understand what they mean by with respect to x). And then y is a function of x...I don't understand what

    asked on November 3, 2008
  80. Verb form " to be"

    How can I introduce or teach 3rd graders how to use the Correct Verb Form of the verb "to be"? I want to tell them when to use the words: am, is, are, was, and were....

    asked on October 21, 2008
  81. Pre Calc

    Without actually graphing it, show that the graph of the equation x^3+y=x is symmetric with respect to the origin.

    asked on October 2, 2008
  82. Science

    what is the largest organ human beings have

    asked on September 30, 2008
  83. math

    Can you use a proportion to solve any ratio problem? If your answer is yes, which ratio problem would you not use a proportion to solve? if your answer is no, which ratio problem would you be able to solve?

    asked on September 28, 2008
  84. Algebra

    I'm having trouble with inequalities. Basically my problem is about which way the sign goes. Here's an example.. X(X+1)>2 so then it becomes X^2 + X>2 Correct? Then X^2 + X - 2>0 then factor so it becomes (X+2)(X-1)>0 And so I end up with X>-2 and X>1 as

    asked on September 9, 2008
  85. math

    How do i find the area of a triangle? For example: A squared + b squared= c squared 8.5 squared + 6.4 squared= c squared 72.25 + 40.96= c squared 113.21=c squared 10.6400188=c even tho i thought this was the answer it is not because it does not solve the

    asked on August 29, 2008
  86. Health

    What is the process by which alcohol leaves the body? It's the only one on my crossword puzzle that I can't figure out and it's supposed to start with an E

    asked on May 8, 2008
  87. pre-calculus

    Hi I have this question regarding ellipses. the equation is.. x^2/25 + y^2/169= 1 it asks for major and minor axis (i got 10 and 26) x-intercept y-intercept ((5,0)(0,13)) foci (-12,0) points of intersection with line y= 1-2x graph graph the equation of the

    asked on May 4, 2008
  88. chemistry

    sorry i didn't post before.. Lab: Electrolytic Cells Purpose: The purpose of this experiment is to test the method of stoichiometry in cells. Materials: Balance Steel can Tin electrode Power Source Wire lead (x2) tin(II) chloride solution (3.25 M) Timer

    asked on April 18, 2008
  89. physics

    A 10000 car comes to a bridge during a storm and finds the bridge washed out. The 700 driver must get to the other side, so he decides to try leaping it with his car. The side the car is on is 24.0 above the river, while the opposite side is a mere 6.80 m

    asked on February 11, 2008
  90. biology

    I was wondering if anyone could help me to better understand the Dichotomous Key and how to fill one in.

    asked on July 12, 2008
  91. Economics

    How can you obtain a downward sloping market demand curve from a horizontal firm demand curve experiencing perfect competition? If you sum up individual demand horizontally for the firm at the given market price will market demad not still be horizontal?

    asked on October 4, 2007
  92. Parts of Speech

    I had a list of 50 words to change the parts of speech of. I got most of them but I can't seem to find these anywhere. Conjure - change to a noun and adj. pernicious - change to a noun and verb diffident - change to a noun and verb lament - change to an

    asked on September 24, 2007
  93. English

    I need to find the subject and the verb in each sentence. If the subject is understood, write (you). Can someone tell me if I am on the right track? 1.Have you ever heard stories about dragons? Subject-dragons, verb-stories 2.Picture a yellow-speckled,

    asked on September 16, 2007
  94. chemistry

    o make 100mL of a solution that is .25M in chloride ion, how many grams of MgCl2 would you need to dissolve

    asked on September 16, 2007
  95. History

    George Washington said in his farewell address that he was worried about the political party system, geographical distinctions, and alliances with foreign affairs. How have we progressed so far in each of his concerns? I think Washington's fear were

    asked on August 18, 2007
  96. Science

    What is the structural formulae for the equation for the hydrolysis of lactose? It is impossible for us to draw structures on the computer. Here is a web site that may help you.

    asked on February 10, 2007
  97. Biology

    What is the structural formulae for the equation for the hydrolysis of lactose?

    asked on February 7, 2007
  98. Music

    In my music history class we have to write a paper that involves music from the 1960s. I need a song that is satire, which is making fun of the Government during the Vietnam War. OK, Samantha, you're really aging us now. We all clearly remebmer the song "I

    asked on October 1, 2006
  99. Science

    Which type of rock forms from magma and contains large interlocking crystals?

    asked on May 29, 2018
  100. Chemistry

    2.Which gas law would you use to calculate the new pressure for a gas when the volume of the trapped gas changes well temperature remains constant?

    asked on May 17, 2018


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