# Stephanie

Newest questions and responses by Stephanie
1. ## Chemistry

So I was asked to write the overall equation for Br2 in Dichloromethane with Cyclohexene. I can kinda fudge the overall reaction because I know the general reaction of halogens with a double bond, but I am wondering why is the Br2 in the Dichloromethane in

2. ## Math

Find the total tax deductions for each of the following weekly paychecks.weekly pay \$98.00,\$240.00,\$150.00 FICA (7.65%)

3. ## Physics

First, I'm sorry for asking a lot of questions, however I don't know how to solve any of these problems. Can you please help me by telling me how I should solve it and what formulas should be used? I don't want the actual answers but how to solve these

4. ## Science

What does a warm front mean?

5. ## Science

What type of weather should the New England and area expect on Thursday and Friday?

6. ## Science

How does the convection of air produce thunderstorms?

7. ## geography

what city has the latitude of 51 26n and longitude of 5 30e

8. ## English

In not less than 350 word's write about Nigeria my county

9. ## Math

to celebrate the first day of a leap year, i taught my dog to jump through a hoop. it was a sunday. when he taught me the same trick the first day of the next year, it was a ? a. sunday b. monday c. tuesday d. wednesday is tuesday the correct answer?

10. ## Math

A plane left Atlanta at 11:30 AM and flew to an airport near Boston. The plane was due to arrive at 3:15 PM. The plane arrived 25 minutes late. The time of the trip was: Is the answer 4 hours and 10 minutes?

11. ## math

if a man travels r miles and hour for h hours and s miles an hour for t hours, what is his average rate in miles per hour for the ENTIRE distance traveled? a. rh+st b. r/h+s/t c. rh+st/2 d. rh+st/h+t is the answer b?

12. ## Math 201

I am having problems with this question in my math class. Consider a student loan of ​\$25,000.00 at a fixed APR of 12% for 25 years. a. Calculate the monthly payment. The monthly payment is \$263.31 b. Determine the total amount paid over the term of the

13. ## Chemistry

Calculate the relative effusion rate of hydrogen and oxygen, given that both the gases are diatomic, with hydrogen having a molar mass of 2 grams and oxygen having a molar mass of 32 grams. Using Graham’s law equation.

14. ## Science

What is the effect of hunting in the gender of species?

15. ## physics

What is the average useful power output of a person who does 5.50×106 J of useful work in 6.50 h? 235 W correct answer Working at this rate, how long will it take this person to lift 1850 kg of bricks 1.20 m to a platform? (Work done to lift his body can

16. ## physics

Calculate the force needed to bring a 1070–kg car to rest from a speed of 89.0 km/h in a distance of 110 m (a fairly typical distance for a non-panic stop). -2.97×103 N correct answer Suppose instead the car hits a concrete abutment at full speed and is

17. ## physics

the nail puller shown in the figure below you exert a force 53.2 cm from the pivot and the nail is 1.50 cm on the other side. What minimum force must you exert to apply a force of 1380 N to the nail to pull the nail up? 38.9 N is correct What is the

18. ## physics

A supertanker (mass = 1.57E+8 kg) is moving with a constant velocity. Its engines generate a forward thrust of 7.47E+5 N. Determine the magnitude of the resistive force exerted on the tanker by the water.

19. ## physics

When opening a door, you push on it perpendicularly with a force of 55.4 N at a distance of 0.728m from the hinges. What torque are you exerting relative to the hinges? (Does it matter if you push at the same height as the hinges?)

20. ## physics

Two children push on opposite sides of a door during play. Both push horizontally and perpendicular to the door. One child pushes with a force of 16.4 N at a distance of 0.590 m from the hinges, and the second child pushes at a distance of 0.470 m. What

21. ## physics

In the nail puller shown in the figure below you exert a force 53.2 cm from the pivot and the nail is 1.50 cm on the other side. What minimum force must you exert to apply a force of 1380 N to the nail to pull the nail up?

22. ## physics

How much work is done by the boy pulling his sister d = 25.0 m in a wagon as shown in figure below? Assume no friction acts on the wagon and he pulls with a force of 65.0 N and at an angle θ = 31.0°.

23. ## physics

Suppose a 300–g kookaburra (a large kingfisher bird) picks up a 77.0–g snake and raises it 2.70 m from the ground to a branch. How much work did the bird do on the snake? How much work did it do to raise its own center of mass to the branch?

24. ## physics

Calculate the force needed to bring a 1070–kg car to rest from a speed of 89.0 km/h in a distance of 110 m (a fairly typical distance for a non-panic stop). Suppose instead the car hits a concrete abutment at full speed and is brought to a stop in 2.34

25. ## physics

A 77.6 kg ice skater is skating along in a straight line (in the positive direction) at 10.3 m/s when he bends down and scoops up his 27.4 kg doggy sitting still on the ice. What will be the new velocity of the dog-n-skater?

26. ## physics

What is the average useful power output of a person who does 5.50×106 J of useful work in 6.50 h? Working at this rate, how long will it take this person to lift 1850 kg of bricks 1.20 m to a platform? (Work done to lift his body can be omitted because it

27. ## physica

A particle accelerates from rest at 6.1 m/s 2 . What is its speed 4.6 s after the particle starts moving?

28. ## Math

Each week Rosa receives a salary of \$200 plus a 6 percent commission on her total sales. To the nearest dollar, how much would Rosa have to sell in one week to earn a total of \$300

29. ## Science

A mouse that eats grass is called a ......

30. ## Physics

Brownian motion

31. ## Algebra

Suppose you want to draw a rectangle where the width is 7 inches less than the length and the diagonal is 7 inches longer than the length. What are the dimensions of the rectangle?

32. ## reliabiility

According to classical test theory, if the observed variance of a test is 50 and the true variance is 40, what is the estimated reliability of the test

33. ## Math

If rCosx=3 and rSinx=4, find the value of r and x.

34. ## Literature

Discuss the significance of the "Ale house" in Oliver Goldsmith's "She stoops to conquer"

35. ## Physics

A box (mass=34kg) is set on an incline (angle=36.5 degrees), attached to a string. The box is let go slowly with a tension of 205N on the string, and starts sliding down with an acceleration of 0.12m/s^2. What was the coefficient of kinetic friction

36. ## statistics

On a entrance exam, the mean was 50 and standard deviation was 5. If Ricky's z-score was -1.5, what was his exam score? I don't have a clue how to start to answer this question...

37. ## maths

Why is the open ended frequency distribution necessary

38. ## Math

Kay wants to know the length of large pond on property. One stake is at 50m with an angle of 21 degrees. The 65m from the other end of the lake and the angle is 26 degrees. How long is pond?

39. ## Science

What net force is required to accelerate a roller coaster car that has a mass of 300 kg at Disney world at a rate of 8 m/s2 ?

40. ## Calculus

A car moves along a straight road in such a way that its velocity (in feet per second) at any time t (in seconds) is given by v(t) = 3t * sqrt(49-t^2)

41. ## Math

Using the letters A and B, the following two-letter code words can be formed: AA, AB, BB,Ba. Using the letters A, B, and C, how many different three-letter code words can be formed? I know that the answer is 27 from the answer sheet, but how? Can you

42. ## Math

Kate uses a copy machine to enlarge her rectangular design that is 6 inches wide and 8 inches long. The new width is 10 inches long. What is the new length. I got some weird number like 13.333. I multiplied 8 times 10 and divided 80 by 6.

43. ## Math

Find the number of foul shots Ryan made if he made 60% of the total shots he took I am not sure how to set up the problem

44. ## Calculus

Can you please help me find the x and y intercepts of this equation. How do I solve this? y= x^2 √9-x^2

45. ## Calculus

I need help determining whether the following functions are even, odd, or neither. Please help me. 1. f(x)=4x+5 2. f(x)=x^3-x-2 3. f(x)=x^4-x / x^5-x 4. f(x)= x^3-x / x^5

46. ## US Government

Where in the Constitution does it give states equal representation in the Senate and also where is it stated or implied that it established states as vital components of the machinery of government? Please help.

47. ## Calculus

Write the equations of the circle in general form. 1. Points on circle (0,0), (0,8), (6,0) 2. Points on circle (1, -1), (2, -2), (0,-2). I don't know how to solve this given the fact that I don't know what the center or the radius of the circle is.

48. ## physics

We have a charge q = -0.6 x 10^-6 C at origin. And a vector r = (0 m, -5 m, 0 m). Find the electric field E(r) as a vector expressed in terms of i j and k. Ok so far I got E(r) = k (0.6e-6)/(5)^2 = 216 N/C. But this is not a vector, how do I express this

49. ## Calculus

Even after looking up how to do this and reading about it I still don't know how to find the slope of curve or the deritives . Please help solve these problems. 1. Y =x^3 p(-1, -1) 2. Y = x^4 /2 p(-1 , 1/2) 3. Y= 8x^4 -7x^2 +5x + 6 p(-1,2)

50. ## Government

If during the war, Congress has the power to declare war, what powers do the other branches of government have during the war?

51. ## English

I need help with writing a really good thesis statement regarding the stories Popular Mechanics by Raymond Carver and The Judgement of Solomon and their parenting styles. It's supposed to be compare and contrast but I'm stuck. Please help me.

52. ## Math

Please help me. You work every Sunday in the yard from 8:00 A.M. To 11:30 A.M. Draw a diagram that shows the rotation completed by the hour hand of a clock during this time. Find the measure of the angle generated by the hour hand in both degrees and

53. ## Algebra

I don't know how to solve this at all. You work every Sunday in the yard from 8:00 A.M. To 11:30 A.M. Draw a diagram that shows the rotation completed by the hour hand of a clock during this time. Find the measure of the angle generated by the hour hand in

54. ## math

before swimming andrea walks for 12 minutes and burns 60 calories. While swimming she burns 10 calories per minute. Write a variable expression for how many calories Andrea burns while walking for 12 minutes and swimming for m minutes.

55. ## Math

If seven times a number is added to the squares of the number and the result is negative twelve, what are the numbers?

56. ## Ross

If seven times a number is added to the squares of the number and the result is negative twelve, what are the numbers?

57. ## Math

How many 3 5\8 board can be cut from a 10 ft board?

58. ## pre algebra

The difference between two numbers is 44. Five times the smaller is equal to 8 more than the larger. What are the numbers

59. ## Math

laura spent 20 percent of her money on a dress. she spent 2/5 of the remainder on a book. she had \$72 left. how much money did she have at first?

60. ## Algebra

X/5 -g=a for x

61. ## math

Flying against the wind, an airplane travels 5600 km in 8 hours. Flying with the wind, the same plane travels 9900 km in 9 hours.

62. ## Global Communicaiton Studies

Which socio-cultural variable is the most important and why? Looking forward to your insights. Thank you!

63. ## Math- any help would be greatly appreciated

In triangle ABC, the medians AD,BE, and CF concur at the centroid G. (a) Prove that AD < (AB + AC)/2. (b) Let P=AB+AC+BC be the perimeter of triangle ABC. Prove that 3P/4 < AD + BE + CF < P.

64. ## Math

In triangle ABC, the medians AD,BE, and CF concur at the centroid G. (a) Prove that AD < (AB + AC)/2. (b) Let P=AB+AC+BC be the perimeter of triangle ABC. Prove that 3P/4 < AD + BE + CF < P.

65. ## precalculus

A drug is administered every 6 hours. The kidney eliminates 55% of the drug over that period. The initial dose is 210 mg. Repeated dosage is 70 mg. What is the "differnece equation"?

66. ## maths

power supply in Nigeria is assumed to be normally distributed with daily mean at 68 minutes and variance 49 minutes .what is the probability of having power supply for (1) less than 45 minutes? (2) at least 1 hour? (3) between 75 minutes and 90 minutes?

67. ## maths

using determinant method find the area of the quadrilateral ABCD given the coordinates A(3,3) B(-2,5) c(-1,2) D(1,1)

68. ## math

my son informed me that a comic book I purchased for 10 cents in 1948 is worth \$85. today what has been the average annual compound rate of return on that valuable asset

69. ## Math

In how many ways can 5 of 14 different sized and different colored beads be put on a string to form a necklace. would the answer be 14!/!9 ?

70. ## Energy of satellite PHYSICS

An m = 43 kg mass instrument package is put into orbit at an altitude above the Earth of A = 23000 km. What is the kinetic energy of this satellite in Joules?

71. ## Biology

I'm sorry but I had to post this question again as I left out the question. In a certain species of plant, the allele to produce green melons (G) is dominant over the allele to produce yellow melons (g). A student performed a cross between a plant that

72. ## Biology

In a certain species of plant, the allele to produce green melons (G) is dominant over the allele to produce yellow melons (g). A student performed a cross between a plant that produced green melons and a plant that produced yellow melons. When the student

73. ## math

The sum of the digits on a digital clock is 15. The number of minutes is 5 times the number of hours. Wheat time is it?

74. ## Pre-Calc

If tan theta equal - square root of 22 divided by 11 and pie/2 is less than theta and theta is less than pies, what is the cos of theta in simplified rationalized form

75. ## Math

A cafe used 640 ounces of water to make tea how many quarts of water did the cafe USED

76. ## Infinite math

A company finds that producing 12 items costs \$31, while producing 7 items costs \$25. What's the company's marginal cost?

77. ## math

Home Depot wants to buy a new line of fertilizers. Manufacturer A offers a 19/14 chain discount. Manufacturer B offers a 24/12 chain discount. Both manufacturers have the same list price.

Front Range Cabinet Distributors in Colorado Springs, Colorado, sells to its contractors with a 32% markup on cost. If the selling price for cabinets is \$9,357, what is the cost to contractors based on cost?

79. ## AP Chemistry

Which of the following is true about lanthanides? A. they are all radioactive B. they are highly electropositive C. they are very common elements D. they have low melting and boiling points

80. ## MATH

HOW MANY CALORIES IS IN ONE BANANA?

81. ## math

In 2013, the price of a business math text rose to \$120. This is 10% more than the 2012 price. What was the old selling price?

82. ## math

Satelite Corporation projects a year-end net income of \$64,497. The net income represents 31% of its projected annual sales. What are Satelite's projected annual sales?

83. ## math

The factory wants you to build a box that will hold twice as many cubes. What are the dimensions f a box that contains two times as many cubes as a box that is 2 by 3 by 4

84. ## math

a major airline laid of 4000 pilots and flight attendants. if this was 12.5% reduction in the workforce, what was the size of the workforce after layoffs?

85. ## chemistry

what is the advantage of using the indirect method over the direct method for calculating the enthalpy change of 2KHCO3 - K2CO3 + CO2 + H20

86. ## Algebra

Over 350 students took a college calculus final exam. the scores of the students follow a normal distribution. using the information given below, determine the mean and the standard deviation for the students'scores. Give your answers to the nearest tenth

87. ## Chemistry

Ammonium carbonate decomposes upon heating according to the balanced equation: (NH4)2CO3(s) -> 2NH3(g)+CO2(g)+H2O(g) Calculate the total volume of gas produced at 27.0 degrees C and 2.03 atm from the reaction of 1.4kg of (NH4)2CO3. What is the pressure of

88. ## math

I need to predict a certain number of pens in the bag how do i do this You have a bag of 100 pens you choose 7 green pens and 13 purple pens predict the number of purple pens in the bag.

89. ## AP Lang

If they give you a ruled paper, write the other way. What kindof figurative language is being used and what type of sentence is this

90. ## Math

If there are 10 more boys than girls,how many are girls and how many are boys? (I think out of 28)

91. ## math

First week sells 6 chairs for \$80 each. Next week, if chair is not sold, it will sell for 0.85 times previous week's price. Store needs to sell 6 chairs for total of \$270 to make a profit. what is the last week in which all 6 chairs could be sold so that

92. ## Physics

Two particles approach each other with equal and opposite speed v. The mass of one particle is m, and the mass of the other particle is nm, where n is just a unitless number. Snapshots of the system before, during, and after the elastic collision are shown

93. ## physics

Suppose the horizontal sweep of an oscilloscope takes 80ms how many cycles of a 100 Hz wave will be shown?

94. ## English

fill in the blank Which one of these careers ____ to six-figure salary? a. lead b. are leading c. leads d. have led c

95. ## BIO 12

BIO 12 DNA DOUBLE HELIX. Hi, I'm having troubles understanding the following question(s) and was wondering if anyone could give me a hand? Original DNA Double Helix: TACGGGATACCGCCGTTCACACGT ( Starting From Left; Position #1 would be between the first A

96. ## Need HELP reall bad test tommorrow

how to make a xy table for the following greatest integer equation. f(x)=2[x], g(x)=[2x], f(x)=-[[x]], and g(x)=[[-x]] thank you for the help

97. ## Finance

Suppose the firm (has sales of \$586,000, costs of \$247,000, depreciation expense of \$43,000, interest expense of \$32,000, and a tax rate of 35 percent) had 85,000 shares of common stock outstanding. What is the earnings per share, or EPS, figure? What is

98. ## Finance

Suppose the firm in paid out (sales of \$586,000, costs of \$247,000, depreciation expense of \$43,000, interest expense of \$32,000, and a tax rate of 35 percent) \$73,000 in cash dividends. What is the addition to retained earnings?