# erik

Most popular questions and responses by erik
1. ## Calculus

A rectangular recreational field needs to be built outside of a gymnasium. Three walls of fencing are needed and the fourth wall is to be a wall of the gymnasium itself. The ideal area for such a field is exactly 250000ft2. In order to minimize costs, it

2. ## Math

There is a football field and the length shows 120 yd and the width is 53 1/3 yd a. What are the dimensions of a football field in feet? b. A chalk line is placed around the perimeter of the football field. What is the length of this line in feet? c. About

3. ## English

Maya Angelou - I Know Why the Caged Bird Sings What Maya Angelou means by the title of her autobiography.? Please Help if you can

4. ## Math

Which container holds more, a half-gallon milk jug or a 2 liter juice bottle? My answer: 1 gallon=3.79 liters 3.79 liters/2=1.895 liters A 2 liter juice bottle would hold more. Can you please check my work and let me know if there is another way to figure

The kinetic energy of a 50 newton object resting on the edge of a cliff 30 meters high is?

6. ## Calculus

A baseball diamond is a square 90 ft on a side. A player runs from first base to second base at 15 ft/sec. At what rate is the player's distance from home base increasing when he is half way from first to second base?

7. ## Math

You complete 3centimeters of a necklace in an hour. Each hour after the first, you triple the length of the necklace. Write an expression using exponents for the length of the necklace after three hours. Then find the length.

8. ## verbs

In heaven there are many mansions. "are" is the verb right

9. ## Math

Demetria is tiling a square area of her bathroom floor. For every 13 white tiles used, she wants to use 12 gray tiles. Draw a grid , 5 squares by 5 squares, then shade the tiles to show a pattern that would match the ratio of white tiles to gray tiles that

10. ## chem

Ok so i looked at it and tried to figure out the conj. base and acid. Are these right? 1) S2-(aq) + HCl(aq) Cl1-(aq) + HS1-(aq) This is what I think it is: Acid = HCl Base = S^2- Conjugate acid =HS^1- Conjugate base = Cl^1- 2) H2O2(aq) + PO43-(aq)

11. ## General Chemistry

Carbonic acid forms when carbon dioxide dissolves in water. A typical can of soda contains a 0.120 M solution of CO2. Assuming that all dissolved CO2 is present as carbonic acid, and that no other substances dissolved in solution affect the pH, what is the

12. ## Math

Walmart sells a case of 24 cans of diet coke for \$6.88. Publix sells a 12 pack of diet coke for \$3.99. Which is the best buy? I need help on this.

13. ## physics

what is the torque a bolt with 30 cm wrench with an applied force of 650n?

14. ## Physics: Three Identical Masses

Three identical masses of 640 each are placed on the x axis. One mass is at = -100 , one is at the origin, and one is at = 400 . What is the magnitude of the net gravitational force on the mass at the origin due to the other two masses? Take the

15. ## verbs

A signed warned drivers about falling rocks along the street. in this sentence would the only verb be warned because falling is an adj describing rocks

16. ## science

10 mL of 0.0100 M HCl are added to 25.0 mL of a buffer solution that is 0.010 M HC2H3O2 and 0.1 M C2H3O2-. What is the pH of the resulting solution?

17. ## chem

Ok so for question I have to state whether the element/compound is an acid, base, conjugate acid or conjugate base. Can u please tell me if i am correct and help me out with the ones i am unsure what the answer is? 1)S^2-(aq)+HCl(aq)Cl^1-(aq)+HS^1-(aq)

18. ## Physics

The steel I-beam in the drawing has a weight of 5.22 × 103 N and is being lifted at a constant velocity. What is the tension in each cable attached to its ends?

Judy and Ramey together have 42 stuffed animals. Judy has 12 fewer animals than Ramey. How many stuffed animals does each girl have? I know that the answer is Ramey has 27 and Judy has 12 but I don't know how to write the equation for solving it. I figured

20. ## Calculus

Given dy/dt=4y and y(2)=400. Find y(7).

21. ## Linear Algebra

Demonstrate that the proyection of a vector U over a vector V is parallel to the vector the vector U. I used the formula of proyection and I argued that as the final result is a number multiplied by the vector U then it is parallel. I need help to verify

22. ## Math

Using the binomial theorem, Find the first three terms in the expansion of (x^2+2y^3)^20

23. ## physics

A 4.0 kg pulley of radius 0.15 m is pivoted about an axis through its center. What constant torque is required for the pulley to reach an angular speed of 25 rad/s after rotating 6.0 revolutions, starting from rest?

24. ## university of phoenix

In a binomial distribution, n = 12 and π = .60. find the probability x=5

25. ## Trigonometry

Verify Identity: cos5x-cos3x=-8sin^2x(2cos^3x-cosx)

26. ## physics

A 4.0 kg pulley of radius 0.15 m is pivoted about an axis through its center. What constant torque is required for the pulley to reach an angular speed of 25 rad/s after rotating 6.0 revolutions, starting from rest? What moment of inertia do I use to

27. ## English

Please help me interpret this-I'm in 8th grade and I don't have any idea: What is the main idea? Read the following quote from Thomas Paine's pamphlet, Common Sense. Summarize the main idea of the passage. "Some writers have so confounded society with

28. ## social studies

How did Congress respond to the black codes passed in many Southern states after the Civil War? (1 point)by taking away the voting rights of southerners by sanctioning the remaining Democrats in Congress by impeaching the president by expanding the power

29. ## body systems

Veins carry blood ________ the heart. A. Away from B. Towards C. Closer to D. All of the above c?

30. ## Physics

A car goes around a curve on a road that is banked at an angle of 32.5 . Even though the road is slick, the car will stay on the road without any friction between its tires and the road when its speed is 19.0 . What is the radius of the curve?

31. ## math

Jill bought a can of pop for .75 and jane bought a 6 pack.for 3.60 who got the best buy and why is it the best buy

solve each equation for y. do x and y vary directly? if so indentify the constant of variation. 1.4x=5y 2.2x+3y=6

33. ## programming

Java Programming Build 3 methods(no arguments) that will do the work (input, calculations and output) for each of the 3 different figures. Then in the 3 “if” statements (or Switch stmt) that you have to determine which figure was selected, you should

34. ## grammar

In the sentence - "Tom could see the anger in Mr. Adams' face." is "Mr. Adams' face" a compound noun? I know Mr. Adams' is a possessive noun and face is a common noun but I am supposed to list compound nouns. Same with the sentence "The Team lost their

35. ## Science

5.00 ml of 1.90M HCl is diluted to 0.400l. calculate the pH of the HCl?

36. ## Learning

can anyone give me a site from which I can learn educational things, it can be game types of sites, I don't mind that as long as it isn't boring

37. ## biology

under what condtions is a hypothesis supported

38. ## thesis statement

need a hook + thesis statement for a paper on psychoanalysis Psychoanalysis is a really broad subject. Narrow the subject considerably, and then worry about thesis. As it is, you could write a very, very large book and not finish the subject.

39. ## math

a piece of silver density 10.5g displaces 4.5ml {cubed} of water in a test tube what is its mass?

40. ## Statistics

Suppose that heights of newborns are bell shaped with a mean of 6.8 pounds and a standard deviation of 1.3 pounds. What percentage of weights are: a) Below 6.8 lbs.? b) Above 8.3 lbs.?

41. ## Statistics

Suppose that heights of newborns are bell shaped with a mean of 6.8 pounds and a standard deviation of 1.3 pounds. What percentage of weights are: a) Below 6.8 lbs.? b) Above 8.3 lbs.?

42. ## Statistics

Suppose the mean height of a population is 65 inches with a standard deviation of 1.5 inches. What is the z value for a height (x) of 67 inches?

43. ## Chemistry

Im stuck on this question. The unusual aspect of functional group replacement of an alcohols hydroxyl group by chlorine by treatment with thionyl chloride is: A)spontaneous creation of a carboccation and SO2 Cl,the ion pair created by SOCl's mechanism of

44. ## Math

I cant figure this question out. I could use some help. Solve for x lnx-lnx^2+ln5 = 0 Simplify the answer

45. ## mathematics

A circular water stain on your home ceiling had a diameter of about 4 inches across on Monday at 8 A.M. On Tuesday at the same time it was about 5.3 inches across. The unit for time is days. (1) Calculate the growth rate as a percentage to at least the

46. ## science

What is the gravitational potential energy of a 2kg ball on planet earth raised 15 meters in the air?

47. ## Physics, Math, Science

A 56 kg student is standing atop a spring in an elevator that is accelerating upward at 3.5 m/s^2. The spring constant is 2300 N/m. By how much is the spring compressed? I'm not exactly sure how to approach this problem, much less solve it. The

49. ## History

The Aryans were made up of different groups of people. However, in what way were they alike? I am having a lot of trouble answering this question Please help.

50. ## Language Arts

I need to practice writing summaries and small essay for my 9 week exam and I am not very good at writing summaries or essays. Can you please help me or provide me with a website that I am able to do practice summaries on. Please help.

51. ## Math

On a Christmas package, Audrey needs to use only 40-cent stamps and 16-cent stamps. If she uses twice as many 40-cent stamps as 16-cent stamps, how many of each type of stamp must she use to mail a package costing \$5.76 in postage?

52. ## nervous system

The pulmonary circuit and the ________ circuit make up the blood vessels of the body. A. Flexible B. Systemic C. Blood D. Capillary c?

53. ## Math

In the number 22! determine the largest prime factor.

54. ## Math

A sequence of four integers is both arithmetic and geometric. if the sum of the four numbers is 20, find the first integer in the sequence.

55. ## algebra

if four individuals share \$270 in the ratio of 1:1:2:5, how much is the lagest share?

56. ## Chem

what is the empirical formula of aspirin, C9H8O4? is it the same again ?

57. ## High School Science

A ray of light goes from water (nwater=1.333) into ice (nice=1.309). Which of the following statements is true? 1) The ray gets closer to the normal after crossing the interface. 2) The ray does not change directions after crossing the interface. 3)The ray

58. ## biology

Why might it be worse to get an infection from someone in the hospital than from someone on a bus? is it because how bad the infection is, usually people that are in the hospital are in bad condition

59. ## Jokes

I am in need for a funny joke which I need to add in my skit. Please give me your ideas, and with them I will try to make mine, thanks:-)

60. ## math

what is the constant variation 3.2x+3y=6 4.3x-1=7y-1 write each lineat equation in slope intercepy form 1.x=-2y-7 solve the equation 1.x-15=27

61. ## Math

You mix 8 tablespoons of hot sauce and 3 cups of salsa in a green bowl. You mix 12 tablespoons of hot sauce and 4 cups of salsa in an orange bowl. Which mixture is hotter? My Answers: My first train of thought is that there must be a conversion factor to

62. ## Math

How many factors do the number 8 and 9 have in common? I got, 8:1,2,4,8 9:1,3,9 My answer: 1 Can you please check my answer to see if I got it correct?

63. ## Math

The quotient of two numbers is 46. The difference of the two numbers is 45. What are the two numbers.

64. ## Calculus

Find the derivative of f(x)=(2x)^(1/2)ln(15x)

65. ## Calculus

Find the derivative of y=(2*x^(3/2))/(x^2+5)

66. ## is10

write a story

67. ## Physics

A ball starts 1.175 meters off the ground and shot at an angle of 40 degrees with a velocity of 3.2 m/s. Where does it land?

68. ## ecenomics

how would you describe the impact of factory goods

69. ## Math

Find and express the results in polar form for the following: z = 2(e^(-jω) - e^(j7ω)), where ω = omega j is the math equivalent of i = sqrt(-1)

70. ## statistics

Settlement of two species of mussel larvae was studied. In a wave exposed location, a collector pad yielded 108 larvae of Mytilus trossulus and 72 of M. californianus. In a wave sheltered location, a collector pad yielded 54 larvae of M. trossulus and 16

71. ## statistics

Settlement of two species of mussel larvae was studied. In a wave exposed location, a collector pad yielded 108 larvae of Mytilus trossulus and 72 of M. californianus. In a wave sheltered location, a collector pad yielded 54 larvae of M. trossulus and 16

72. ## Statistics

Lead (Pb) concentrations were measured in waterfowl eggshell samples from two locations. In n1 = 41 samples from a location downstream from a paper mill, the mean Pb concentration was 1 x = 0.13 ppm with a standard deviation of s1 = 0.04 ppm. In n2 = 31

73. ## Statistics

Lead (Pb) concentrations were measured in waterfowl eggshell samples from two locations. In n1 = 41 samples from a location downstream from a paper mill, the mean Pb concentration was 1 x = 0.13 ppm with a standard deviation of s1 = 0.04 ppm. In n2 = 31

74. ## statistics

Suppose that a given population of trees have an average height of 10.2 ft and a standard deviation of 1.3 ft. Find the proportion of the population with heights above 11.8 ft.

1/4tan(2x)

76. ## College math

A circular water stain on your home ceiling had a diameter of about 4 inches across on Monday at 8 A.M. On Tuesday at the same time it was about 5.3 inches across. The unit for time is days. (1) Calculate the growth rate as a percentage to at least the

78. ## Washroom Fix Urgent

what causes water to leak after you've replaced the wax ring on the toilet?

1. ## physics

Why does this look like this in 2018, fire your programmer please thanks

posted on October 6, 2018
2. ## broward college

The defects in collagen fibers that this disease causes will affect the skin, joints, blood vessels, and others. Muscle weakness and swelling of glands will also occur. I am also stuck on the part of how collagen in reticular fibers differ

posted on September 12, 2017
3. ## writing decimals

thirteen thousandths

posted on August 30, 2017
4. ## English

Ms. Sue, I thought that you had a limit of 2 tries and you were done you only gave Kaai97 1 try, what happened? Erik

posted on December 5, 2016
5. ## Math

It's A

posted on October 26, 2016
6. ## Math

I am confused on this.

posted on October 20, 2016
7. ## Math

Thank you Ms. Sue.

posted on October 18, 2016
8. ## Language Arts

Is there anything I can do practice tests on

posted on October 11, 2016
9. ## Math

THANK YOU MISS SUE I HOPE WE CAN UNITE AGAIN LOL

posted on October 11, 2016
10. ## Calculus

Find the derivative of f(x)=(2x)^(1/2)ln(15x)

posted on December 7, 2015
11. ## Physical Science

4.9 m

posted on December 6, 2015
12. ## algebra 1

Yeah, it's C

posted on October 30, 2015
13. ## organic chemistry

For all four of these, it is only the prefix for the longest chain and number of substituents that matters in determining the number of carbons. In #1, butene has the prefix "but-", so therefore has four carbons in the longest chain. Dimethylethylene also

posted on July 12, 2015
14. ## Math

No bra use it's the same time so he didn miss the bus stop

posted on March 10, 2015
15. ## Calculus Help and Check

58,000

posted on November 21, 2014
16. ## umdnj

18.87

posted on October 24, 2014
17. ## grammar

Thank you for answering my question. What made me confused is that in my study guide, "land of liberty" is listed as a compound noun. I am still confused why "land of liberty" is a compound noun but "game of football" is not. Thank you for your help!

posted on June 30, 2014
18. ## health

me too hahaha

posted on June 12, 2014
19. ## English

no it is not

posted on February 4, 2014
20. ## chemistry

Why was the 400.5 multiplied by 100, then divided by the 694.8???

posted on October 9, 2012
21. ## body systems

i know its A i googled it

posted on August 26, 2012
22. ## body systems

D?

posted on August 26, 2012