# samantha

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

2. ## Chemistry

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

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

4. ## math

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

5. ## algerbra 2

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

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

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.

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?

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

10. ## fun facts

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

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.

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

13. ## Science

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

14. ## algebra

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

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.

4/7x-3=13

17. ## Pre-Algrebra

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

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

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.

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

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?

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

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

24. ## science

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

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?

26. ## Chemistry

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

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

28. ## social studies

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

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)

30. ## math

WHAT are the frist 10 composite numbers

31. ## math

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

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

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

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

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

36. ## Chemistry

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

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

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

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

x^2-6x(3-6x)

41. ## math

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

42. ## Math

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

43. ## chemistry

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

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

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?

46. ## ALGEBRA

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.

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

48. ## Social Studies

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

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?

50. ## 6th grade social studies

Forms of communications of the andes?

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

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.

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

54. ## Math

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

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

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)

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

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.

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!

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

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

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?

63. ## Social Studies

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

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.

65. ## maths

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

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

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

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

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

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?

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?

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?

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)

74. ## MATH

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

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

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

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

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

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

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....

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.

82. ## Science

what is the largest organ human beings have

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?

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

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

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

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

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

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

90. ## biology

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

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?

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

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,

94. ## chemistry

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

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

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. http://www.rpi.edu/dept/chem-eng/Biotech-Environ/IMMOB/lactose.html

97. ## Biology

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

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