mac

Most popular questions and responses by mac
1. American Government

Read the excerpt from the state constitution of Arkansas, which was adopted in 1874. No person who may hereafter fight a duel, assist in the same as second, or send, accept, or knowingly carry a challenge therefor, shall hold any office in the state, for a

2. Physics

Mike pulls a 4.5 kg sled across level snow with a force of 250 N along a rope that is 35.0° above the horizontal. If the sled moves a distance of 63.8 m, how much work does Mike do?

3. math

Suppose strontium-90 decays at a rate of 2 percent per year. (a) Write the fraction P of strontium remaining, as function of t, measured in years. (Assume that at time t=0 there is 100 % remaining.) Answer: P(t)=(.98)^t (b) Estimate the half-life of

4. Math/Compound Interest

1. Use the compound interest table to find the compound amount earned on a \$5,900 deposit for 10 years at 10% compounded semiannually. _____________________________________ A. 9,610.45 b. 15,654.47 c. 3,710.45 d. 12,375.66 2. Megan deposited \$6,000 in an

5. Math

The Romascos hope to have \$2,000 in 3 years for a down payment on a new pool. They invest \$1,000 in an account that pays 8% interest at the end of each year. Will they have enough money at the end of 3 years to meet their goal of a down payment? What is

6. Physic

A box with a weight of 22N falls through the air with a wind resistance of 14N, what is the mass of the box and the acceleration of the box?

7. Algebra

Carly deposits \$900 into an annuity at the end of every month for 2.5 years. The fund holds international stocks, and it yields about 12% compounded monthly. Find the interest earned after 2.5 years. a.\$31,619.46 b.\$31,306.40 c.\$4,619.47 d.\$4,306.40 (I can

8. Chemistry

How many moles of HNO3 are present if 0.116mol of Ba(OH)2 was needed to neutralize the acid solution?

9. macroeconomics

(1) Population: 250,000 Unemployed: 20,000 Labor Force Participation Rate: 80% (a) How many people are in the labor force? (b) What is the unemployment rate? (2) Not in the labor force: 125,000 Unemployed: 25,000 Employed: 100,000 What is the unemployment

10. statistics

Miles per gallon. In its Fuel Economy Guide for 2008 model vehicles, the Environmental Protection Agency gives data on 1152 vehicles. There are a number of outliers, mainly vehicles with very poor gas mileage. If we ignore the outliers, however, the

11. geography

What are the geographical and social economic which have led to population in lagos,porthacourt&kano

12. math

Jungle Warehouse signed a 9-month simple discount note with a face value of \$5,600. Find the proceeds if the discount rate is 13%

13. Physics

A river flows due east at 1.42 m/s. A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 11.9 m/s due north relative to the water. If the river is 389 m wide, how far downstream is the boat when it reaches

What 2 words make this compound word? The word is cowgirl. Also name two words in the ill family

15. engineering mechanics (dynamics)

A 500 N weight is attached to a stiff rod of negligible weight that is hinged to one end. The rod is released from rest in horizontal position and allowed to swing freely in vertical arc. Through what angle with the horizontal must it swing to cause a

16. math

I have fewer ones than tens. The value of my tens is 30. What 2 numbers can I be?

17. Molecular formula

I have to find the molecular formula for As2O3, to do so I have to divide its molecular mass by its empirical mass. I have worked ou that its molecular mass is 197.9 g/mol. How would I find its empirical mass, is it not the same as its molecular mass? Many

18. econs

How do you think our nation’s output should be distributed according to income or according to some other standard (such as basic human need)?

19. external/internal character analysis

Hi, I need to prepare a demo lesson for 2nd grade on teaching character internal/external traits to students the lesson needs to be 40 minutes can you give me any ideas

20. math

Compute the monthly payments for an add-on interest loan of \$850, with an annual interest rate of 15 percent and a term of 4 years.

21. physics

Cloverleaf exits are approximately circular. A 1256 kg automobile is traveling 58 mph while taking a cloverleaf exit that has a radius of 35.4 m. Calculate the centripetal acceleration of the car and the centripetal force on the car. Remember that 1 mph =

22. chemistry

how many liters of 0.100 M HCL would be required to react completely with 5.00 grams of calcium hydroxide?

23. Hydrogen

Why does a hydrogen atom, which has only one electron, have so many spectral lines? Any help gratefully received. There are many energy levels the one electron can transition from/to.

24. English

What do you think the title, "The Great Gatsby," means? Is Gatsby “great”? Why or why not?

25. trigonometry

What is the single trigonometric function of (Cos 20 degrees) (Cos 30 degrees)-(Sine 20 degress) (Sin 30 degrees)

26. geometry

find the value of x. triangle xyz 2x, 4x+1, and 2x+3 perimeter of triangle xyz=88

27. chemistry

How do I find the empirical formula for aluminium selenide? You have to have some data, such as masses, or percent: Empirical means it was measured. The empirical formula for aluminium selenide is the same as it's molecular formula; Al2Se3. The empirical

28. Organic Chemistry

The solubility of compound A in ethanol is 0.5 g per 100 mL at 0oC and 5.0 g per 100 mL at 78oC. (a) To make a hot, saturated solution of 15.0 g of A at 78oC, how much ethanol is required? (b) When the solution prepared in is cooled to 0oC, how much of

29. physics

A satellite is in orbit about Earth. Its orbital radius is 7.51×107 m. The mass of the satellite is 5415 kg and the mass of Earth is 5.974×1024 kg. Determine the orbital speed of the satellite in mi/s. 1 mi/s = 1609 m/s.

30. science

Why do you think that the Scientific Method is so important when we talk about the development of Psychology as a science?

31. education

My other question is Which is your favorite Assessment to use? Elementary age Anecdotal Records •Checklists •Event Sampling Portfolios •Rating Scales •Rubrics •Running Record •Teacher and Child Self-Assessments •Time Sampling Of these what

32. education

My other question is Which is your favorite Assessment to use? Anecdotal Records •Checklists •Event Sampling Portfolios •Rating Scales •Rubrics •Running Record •Teacher and Child Self-Assessments •Time Sampling Of these what are the

33. science

13. A procedure used to remove kidney stones by breaking them up in the urinary tract and allowing them to wash out with urine is A. ureterolithotomy. C. lithotripsy. B. lithopaxy. D. nephrolithotomy. 14. The convulsive stage of toxemia of pregnancy is A.

34. Macroeconomics

A decrease in aggregate demand will cause A. aggregate supply to fall according to classical economists, and prices to fall according to Keynes. B. prices to fall and unemployment to increase according to both classical economists and Keynes. C. prices to

35. Chemistry

4.5 moles of oxygen reacting with enough sodium will form how many moles of sodium oxide? How do you solve?

36. math

man drives for a time at 20 mph. then for a time at 45 mph.he drives 25 mi. he drives 50 min. . how many miles did he drive 20 mph ?

37. Algebra

Please help! I need to factorise and solve this equation, x^2 +x -30 =0 I then need to explain how I would use the answer drom this to solve the equation 4x^2 +4x-120=0

38. Physics

A transverse wave on a string is described by the following equation. y(x, t) = (0.35 m) sin[(1.25 rad/m)x + (81.2 rad/s)t] Consider the element of the string at x = 0. (a) What is the time interval between the first two instants when this element has a

39. Macroeconomics

V pays 20 cents V sells to W for 35 cents W sells to X for 55 cents X sells to Y for 80 cents Y sells to Z for \$1.00 Contribution to GDP: (a) 20 cents (b) \$1.00 (c) \$1.90 (d) \$2.90

40. mathematicas

how do you write the matrix: 1 2 -1 | 3 7 -1 0 | 2 3 2 1 | -1 in row echelon form?

41. Motion equation

A stone, which weighs 0.62kg, is thrown, at 5.5ms, its kinetic energy at its maximum height above the surface is 2.3J, what is the height of the stone at this point? Any eqautions or advice gratefully received. I assume that is 5.5 m/s, the initial

42. Riddle

Where C = 46, D = 12, P = 11, Q = 37, R = 17, Y = 19 what numbers do T and S equal?

43. math

Need help...my calculator and I didn't agree! 125+(5×5)+9÷3×8 125+25+9÷3×8 125+25+9÷24 125+25+0.375 150+0.375 150.375

44. Physics

25 litre bottle of oxygen in a hospital. If the bottle is at 12 atmospheres, what volume of oxygen is available to the patient? If the oxygen is stored at 4 degrees C and used at 20 degrees, what difference does this make? (Assuming start volume and

45. English

1. When my teacher stopped [making reeds. Sending] all of her students on a wild goose chase. a. no change b. reeds. Thus sending c. reeds, she sent d. reeds, sending 2. They tend to take their time sending reeds to [you. I usually] have to wait a. no

46. math

reiny, could you give the motorists two trips another try. it appears you can work it . i'd appriciate seeing an answer. thanks.

47. math

a motorist drives to a city in 4 hrs. and returns by another route which is 26 mi. longer. on the return trip he traveled 5 miles per hour faster and took 4 hours and 12 min. . find the length of the shorter route.

48. Algebra

How do I calculate finding the weight of someone, on the earth's surface with a radius of 3900 miles, and their weight 625ft above the surface?

49. english

Find the sentence----------------under the tree. Tom and Jose are. Or. put the toys away

50. vocabulary

How can I compound cowgirl

51. Communication Technology

A digital fsk equipment transmits bipolar return to zero data. when sending a sequence of alternating ones and zeros how many different frequenies will be transmitted? The fsk is actually sending mark and space signals, isn't it? The actual frequncies

52. Chemistry

Need to write a balanced chemical equation for the reaction between hydrogen selenide and tin. I know that the hydrogen selenide decomposes producing solid tin selenide and hydrogen gas but how would I balance that in the equation. Any help gratefully

53. Math(Pre-algebra)

Ok, my question is ‘ last year the price of a certian computer was 150\$ more than it is now. This year's price is 3/4 of last year's price. How much does the computer cost this year?‘. Can someone explain to me how to create an equation for this?

54. maths

If I bought a car at R349000 at 8.75% interest per year and made monthly payments of R5000 per month,what would my total repayment amount be for the car?

55. Education

I have a question if anyone can help that would be great!! I have to put a questionnaire together for my capstone class...How many of you use RTI daily if so how do you use it, thoughts on assessment and instruction and the future of RTI? DO you feel that

56. American History

Most of the asians who immigrated to the united states in the 1850s came because a.) Of available work b.) Of the rumor of a "golden mountain" in california" c.) they were forceds to flee due to collapes of the japanese economy d.) none of these

57. Prob and stats

A card is to be chosen at random from a shuffled deck. Find the probability the card drawn is A. The queen of clubs , given that it is an honor card B. a red four, given that the face number is even C. A seven, given that the face number is prime Please

58. World Geography and History

The ideas of _____ _____ are the basis for communism.

59. math

mr. pursley, have you ever worked geo., trig. etcwith no calu.s with the heat on , when it had to be right?wheather you blew up your target or something else or the bld. collapsed or was built in the correct place? i'm not an answer grazer, but qam an

60. Physic

A spherical concave mirroe has a radius =0.4m forms an image of a 0.2 m high object located 1m from the vertex of mirror. find the position and height of the image. ? please explain your solution

61. chemistry

calculate the amount of reactants required to produce 150g of H2O in CO2+H2O

62. science

what is your opinion on the Koyoto Protocol? do you believe we should participate or not

63. english

Find the words that go together. Snow , sled, rain, wind. Which words have the sound aw in saw?paw watch came tall. What does isn't mean?

64. english

Which sound is the same in paint and way? What does can't mean? 1) can't not. 2) could not 3) cannot . Correct the following sentences. 1) look out four that car. 2) my pet cat are small 3) a toy jet am in the box. 4) mrs larson picked up the baby 5) had

65. Math

Determine the solution set to the equation: 2sin^2x+cosx-2=0

66. English

Can someone please provide me with reliable sites on how to write an absurdist drama piece and more specifically relate it to Harold Pinter's style. Cheers

67. sociolinguistics

hi! important question.is there a possibility to have isoglosses in the UK..if yes why yes if no why not?

68. Ecology

Hi, to calculate the GPP of an area, would I need to add the NPP and amount of respiration together? Hope this makes sense! http://en.wikipedia.org/wiki/Gross_Primary_Productivity

1. Social Studies

Yes a little help with this would be nice....does anyone besides Ms.Sue know? :P

posted on March 27, 2019
2. Math

21000

posted on February 1, 2019
3. Math(Pre-algebra)

Thanks, I was really confused with this problem for the last hour.

posted on May 28, 2018
4. English

sma ms SUE

posted on April 12, 2018

posted on April 2, 2018
6. Social Studies

I think she is a tutor on this website but not sure

posted on November 9, 2017
7. Math

50

posted on October 5, 2017
8. algebra

4x(10-2)

posted on September 18, 2017
9. PHYSICS

28m

posted on September 15, 2017
10. Poetry 7 - Check please!

I got a 100%! Thanks!

posted on February 15, 2017
11. art

Where's question number 6?

posted on February 10, 2017
12. LA

Woah I just saw all this drama right now and I am pretty sure this is a free country where people can use whatever language they want. Number two why do you people care about what other people are saying some people actually come here for help not to

posted on January 23, 2017
13. Algebra 2

My Name is Mac

posted on December 21, 2016
14. langage arts

SAMI is right

posted on December 16, 2016
15. Health.. NEED HELP ASAP

If you go to connections this is the quiz for Living with an eating disorder

posted on December 16, 2016
16. p.e

Um ms.sue arent you a teacher?? If you are u r one bad teacher

posted on November 18, 2016
17. MATH

b a d b a If you are connexus academy these are the answers

posted on October 26, 2016
18. Math

I am in 8th grade and I found the answer to this problem to be 2.25

posted on October 25, 2016
19. math

8(2x-3)-6x if x=3

posted on August 20, 2016
20. science

You could use potassium nitrate to test for potassium because both potassium and nitrate are water soluble. Potassium nitrate will react with the fluoride and create a solid precipitate. Potassium nitrate is water soluble.

posted on June 9, 2016
21. Physical Science

live shorter

posted on February 29, 2016
22. Calculus.......plz help! =)

The answer is radical 55 divided by the square root of x. ur wlcom. thx

posted on December 17, 2015
23. physics

3.4

posted on November 17, 2015
24. Math

He was wearing a football jersey and was talking about yardage gained or lost and what yard line the players ended up on.

posted on October 2, 2015
25. education

posted on September 21, 2015
26. education

Hi Ms. Sue, Elementary Mac

posted on September 21, 2015
27. education

it was just in general what teachers like using

posted on September 21, 2015
28. algebra

15,000

posted on September 4, 2015
29. math help

Your answer is wrong. You forgot to switch csc into sin, therefore r=3, and s=5. Now we know that tan (T)= 4/3

posted on June 17, 2015
30. Math

Thank you so much for explaining that! I wasn't getting that answer at all, but I do see ho you get it. Thank you again!

posted on March 12, 2015
31. physics

(a) Set up two equations. One for forces, one for torques. For the first equation, which way does friction act? i.e. which way would the yoyo move if there was slip? Since there is no slip, friction must be acting *against* the intended direction of

posted on December 8, 2013
32. Physics

390 is for a deccelaration of 4 and not of 7.the right answer is 195

posted on November 3, 2013