# leon

Most popular questions and responses by leon
1. ## American Government

"His 1863 Emancipation Proclamation freed Confederate slaves but scholars still debate whether it rested on any firm constitutional foundation" Based on the excerpt, which statement best illustrates the impact of Lincoln's proclamation on government? A: it

2. ## Physical Science

What are the products of a double replacement reaction between potassium bromide and silver nitrate? Name the resulting compounds.

3. ## phys

The space shuttle, with an initial mass M = 2.41E+6 kg, is launched from the surface of the earth with an initial net acceleration a = 26.1 m/s2. The rate of fuel consumption is R = 6.90E+3 kg/s. The shuttle reaches outer space with a velocity of vo = 4632

4. ## Chemistry

When iron metal reacts with oxygen, the reaction can form Fe2o3 (numbers are subscripts). Write a balanced chemical equation for this reaction and find the number of moles of oxygen that are needed to form 6 mol of Fe2o3. Show your work. I am really stuck

5. ## Algebra

What is the quotient 6-x/x^2+2x-3 divided by x^2-4x-12/x^2+4x+3 in simplified form? State any restrictions on the variable A: -(x+1)/(x-1)(x+2) x does not equal -3, -2, 1, and 6 B: -1/(x+2) x does not equal -3, -2, and 6 C: -(x+1)/(x-1)(x+2) x does not

6. ## American Government

Which adjective best describes how the Necessary and Proper Clause of the US Constitution is often interpreted by the federal government? A. brittle, meaning that it falls apart when used in a legal argument B. elastic, meaning it can be expanded as needed

7. ## Algebra

Raj gets a 1.5 mile head start and runs at a rate of 4.5 miles per hour. Jacinda's progress is represented by a graph that goes through the points (1,10), (2,20), and (3,30). How long will Jacinda need to run to catch up with Raj?

8. ## science

Which rate constant would result in the fastest reaction? Which rate constant would result in the fastest reaction? 1 1.3 × 103 L/mol · s 2 2.8 L/mol · s 3 9.5 × 10-2 L/mol · s 4 4.2 × 10-3 L/mol · s

9. ## science

The half-life of carbon-14 is 5730 years. If we start with 10 grams of carbon-14, after 5730 years, we will have _____ of carbon-14 left.

10. ## science

A graph of experimental data is a straight line when ln[H2] is plotted versus time. Which rate law fits the data? 1 Rate = k(ln[H2]) 2 Rate = k/[H2] 3 Rate = k[H2] 4 Rate = k[H2]2

11. ## math

A side of an equalateral triangle is 2/8 cm long. Draw a picture that shows the triangle. What is the perimeter of the triangle?

12. ## PHYS

A bungee jumper (m = 61.00 kg) tied to a 45.00 m cord, leaps off a 75.00 m tall bridge. He falls to 5.00 m above the water before the bungee cord pulls him back up. What is the magnitude of the impulse exerted on the bungee jumper as the cord stretches?

13. ## Basic programming principles

The user wants to display a message a fixed number of times, if you know the message and the number of times (number) it must be displayed what would be the for statement, will this be correct or incorrect ONLY indicate correct or incorrect at your answer

14. ## math calculus

Use implicit differentiation to find the equation of the tangent line to the curve xy^3+2xy=9 at the point (31). The equation of this tangent line can be written in the form y=mx+b where m is

15. ## science

The half-life of carbon-14 is 5730 years. If we start with 10 grams of carbon-14, after 5730 years, we will have _____ of carbon-14 left.

16. ## French

French Help! I'm having a very rough time figuring out the correct verb conjugation for each of these passé composé sentences. Can somebody that is experienced with the language lend a hand? Nous (avons allé, sommes allé, sommes allés) au cinéma hier

By comparing the amount of carbon-14 to amount of carbon-12, one can determine approx how long ago the organism died. The half-life of carbon-14 is 5730 years. Assume the initial quantity of carbon-14 is 600 milligrams. the equation is A (t)=600*(.5)^(t)

18. ## Maths

triangle ABC is right angled at A. AD is perpendicularto BC. If AB= 5cm,BC= 13cm and AC=12 cm.find the area of triangle ABC. Also find the length of AD.

19. ## Economics

Ashley is currently consuming 10 hot dogs and 8 hamburgers a week. The last hot dog she consumed yielded 20utils while the last hamburger she ate gave her 25utils. If hot dogs cost \$2 and hamburgers cost \$2.50, is Ashley consuming the correct quantities of

20. ## Math

Raj gets a 1.5 mile head start and runs at a rate of 4.5 miles per hour. Jacinda's progress is represented by a graph that goes through the points (1,10), (2,20), and (3,30). How long will Jacinda need to run to catch up with Raj?

21. ## Math

The number 48 consists of how many distinct prime factors?

22. ## Science

5.The process of desertification can occur when B.farmers use contour farming techniques C.an area of forest is clear-cut D.an area of forest is selectively cut 7.Which of the following statements describes the conservation of a natural resource? A.A

23. ## calculus

sum (n*2^n)/(2^n +3^n) [n to infinity] conv or div ? and how to get that? thank you!

24. ## Chem

In the |Molecular Geometry Lab 1. List three ways in which models used in this experiment are inaccurate representations of orbitals? 2.explain why the ClF3 molecule is not a trigonal planar molecule?

25. ## statistic

I claim that I make 80% of my basketball free throws. To test my claim, you ask me to shoot 20 free throws. I make only 8 of the 20. “Aha!” you say. “Someone who makes 80% of her free throws would almost never make only 8 out of 20. So I don’t

26. ## physics

A mass m1 = 6.0 kg sits on a frictionless table, and rotates at a constant speed v = 3.0 m/sin a circle of radius R = 1.5 m. m1 is attached by a massless string which passes through a hole in the centre of the table to a second m2 (which hangs freely

27. ## Global : Columbus

1) Why do you think Christopher Columbus is a villian? 2) Who discovered America before Columbus?

28. ## Econ

The 1-year interest rate on Swiss francs is 5 percent and the dollar interest rate is 8 percent. (A) if the current \$/SF spot rate is \$0.60, what would you expect the spot rate to be in 1 year. (B) Suppose US policy changes and leads to an expected future

29. ## Math

g(x) = (1-x)(4+6x) / (5x^2+4) Horizontal asymptote y = ?

What fraction of a dollar is shown by coins (2 quarters, 1 dime, and 5 nickels)? I got 80/100 equals 8/10. Is 8/10 the correct answer? If not can you show me how to get the right answer?

31. ## java programing

Write a program that evaluates the volume and surface area of a sphere of radius 11.2cm.

32. ## calculus

The parametric curve x(t)=3cos(t) y(t)=7sin(2t) intersects itself at a point P=(x0,y0) where x0= y0= The slopes of the 2 tangents at this point are? THANK YOU!

33. ## LINEAR ALGEBRA

How to prove or disprove (a)if A has a zeronentryonthe diagonal then A is not invertible (b)if Ais not invertible then for every matrix B, AB is not invertible (c)if A is a nonzero 2X2 matrix such that A^2+A=0, then A is invertible

34. ## Finance

if the price of milk has quadrupled (that is, grown four times) over the past 25 years, what has been the annual rate of inflation in milk price over that time period?

35. ## Algebra

simplify the complex fraction x/(x+2)/((1/x)+1/(x+2)) if you put that in the calculator it should show you what it looks like properly. A: x^2/2 B: x^2/x+2 C: x^2/2x+2 D: x^2+2x+2/2x+2 I think it is C

36. ## physics

A boulder flies through the air at 14.5 m/s with kinetic energy 310 J. What's its mass? What's the boulder's kinetic energy if its speed doubles? What's the boulder's kinetic energy if its speed is halved?

37. ## Statistics

For each of the following (a) indicate how many factors are included, and (b) tell how many levels there are for each factor: a) 2x2 b) 2x3 c) 2x3x2 d) 4x3 e) 4x3x2x3

38. ## tusd

last year, the sports athelitic club charges 20.00 per class. 70 people attended. The club wants to increase the class price. the club expects to lose one customer for each \$1.00 increase. a. what should the new price be to maximize the income? b. what is

39. ## percentage

you have 50 students one day and 70 the next what is the percentage increase

40. ## chem

1. what is the quantum numbers of the last electron of Sb?(n= l= ml= ms=) and why the answer are this number? 2.how many electrons would be found in the n=6 level if all possible orbitals were completely filled with electrons? how to calculate this one?

41. ## chemistry

For a TLC lab,the stationary phase is the mixture of isopropanol and ammonia or the mixture of hexane,ethyl acetate and ethanol, the stationary phase is silica gel. text some dyes and drugs. which one of the two mobile phases is the more polar? Actualy I

42. ## chemistry

For a TLC lab,the stationary phase is the mixture of isopropanol and ammonia or the mixture of hexane,ethyl acetate and ethanol, the stationary phase is silica gel. text some dyes and drugs. what is the relationship between the polarity of molecules and

43. ## chemistry

it is 0.1M of acetic buffer equal to sum up of 0.05M of acetic acid and 0.05M of sodium acetic ?

44. ## Physics

Consider a simple alternating current generator such as Hippolyte Pixii's dynamo. The current generated by such dynamo can be described as simple oscillating cosine signal. Assuming for simplicity that the max current generated each time a pole of Pixii's

45. ## Calculous

Without using a calculator, find the sum of the series. Pretend in place of E is Greek Letter Sigma. 27 E(4 + 1/2n) = ? N=0

46. ## Sequences

An arithmetic sequence has first term of 6 and difference of 8; what is the tenth term? a10(subscript 10) = ?

48. ## Basic programming principles

The for next statement is used to display the consecutive numbers from 1 to 10K = 1 For I = 1 to 10 Display k, “ “K = k + 1 Next I The output will be 10 9 8 7 6 5 4 3 2 1 Will the above statement output be correct or incorrect

49. ## Basic programming principles

If the value of K is equal to 6, increase the value of A by 5%, if the value of K is equal to 4, decrease the value of A by 8, if the value of K is equal to 7, add the value of B to the value of A, otherwise decrease the value of A by 12%Will the following

50. ## Basic programming principles

Piet earns R20 per hour, if he works more than 30 hours then he receives an extra R8 per hour, will the following statement be correct or incorrect (only type in correct or incorrect at your answer space)If hoursworked > 30 then Salary = salary +

51. ## Math

Sam has a total of 200 dimes and quarters. If the total value of the coins is \$28.10, how many quarters does he have?

52. ## Chemistry

If 2 grams of acetic acid is reacted with excess 1-pentanol, what mass of pentyl acetate would you expect to achieve theoretically?

53. ## java programing

Write a program that evaluates the volume and surface area of a sphere of radius 11.2cm.

54. ## java programing

If you were writing a program application that was harvesting people's emails and telephone numbers, explain and demonstrate how you would validate the individual emails and telephone numbers! That is to make sure all the emails and telephones you got were

55. ## nutrition

o What are some current nutritional issues, such as obesity or malnutrition for infants

56. ## Finance

if the price of milk has quadrupled (that is, grown four times) over the past 25 years, what has been the annual rate of inflation in milk price over that time period?

1. ## Maths lit

Nop it requires mathematics dear

posted on June 7, 2019
2. ## SCIENCE

thanks alot man

posted on March 27, 2019
3. ## alg 2

They mean the answer is A. Just took the assignment.

posted on May 22, 2017
4. ## Algebra

Just got the assignment back and your answers are for sure correct!

posted on May 22, 2017
5. ## Algebra

my bad its not +2 its +3

posted on May 22, 2017
6. ## Algebra

What is S10 for 1+2+9+27+...? The 10 is small and below the S. A: 9,841 B: 29,525 C: 14,762 D: 29,524

posted on May 22, 2017
7. ## Algebra

Can you help on one more question?

posted on May 22, 2017
8. ## American Government

so B, elastic

posted on May 9, 2017
9. ## Math

Okay. All of you need to pay reaaally close attention. All those commenting different answers like "omg 100% correct my answer is for sure no doubt correct" need to post the questions they had to answer to. Because you are literally posting answers to

posted on April 26, 2017
10. ## American Government

regardless of if its A, C or D the answers for 2 are interpreting the rules for the house and naming representatives to committees seriously guys, they change the order to the answers. you can't just say its ABCDEFG or whatever you have to state what the

posted on February 9, 2017
11. ## L.Arts

Greedy raisin, the does !@#\$%^& that mean

posted on November 21, 2016
12. ## life orientation

This can separate the relationship between b.s.a and lead To conflict

posted on May 16, 2016
13. ## physics

thank you 2.95 kg 1240 J 77.5 J

posted on February 10, 2016
14. ## math

If abdul runs 6 miles in 50 minutes. At the same rate, how many miles would he run in 35 minutes?

posted on March 6, 2015
15. ## Calculous

Thank you!!

posted on December 12, 2014
16. ## English

My parents remind us to be good people.

posted on July 23, 2014
17. ## History

you guys are just a peacie of it spam omg you guys can get sewed and everything .l.

posted on March 6, 2014
18. ## Science

So is 7 C?

posted on February 5, 2014
19. ## Help with science

So then is 7 C?

posted on February 5, 2014

I'm sorry its 4 nickels, not 5 nickels. Can you check my answer again..thanks

posted on December 15, 2013
21. ## INTRODUCTION TO THE SHORT STORY, PART 1

hes right

posted on July 3, 2012
22. ## history

i like to eat food

posted on May 17, 2012
23. ## math

write an equation in words and in symbols to represent this situation: Grace has \$100.She is buying charms for her bracelet that cost \$5 each.Write an equation showing the relationship between the number of charms (c)she buys and the amount of money she

posted on May 2, 2012
24. ## history

Yes.

posted on December 3, 2011

amount of carbhohydrates = 27 amount of calories = 121 amunt of calorie sourses other than carbhohydrates =121 - 27 =94

posted on December 3, 2011

@ missy ; the same

posted on December 3, 2011

explain the expanded algorithm for 92x5

posted on April 21, 2011
28. ## pre-algebra

-W

posted on October 24, 2010
29. ## chemistry

Also, for the same situation, which one of the two mobile phases is the more polar? Actualy I need two pieces of evidence... I think the polar one should be the isopropanol and ammonia because it moves slower. Can you help me come up another reason? Thank

posted on September 29, 2010
30. ## Physics (is this right?)

yes

posted on April 13, 2010
31. ## Global : Columbus

Thanks, I truly believe he is a villian for what he had done to those poor innocent people. By stealing their crops, cloths, land, and making them slaves. But I know that someone had discovered the Natives before Columbus I just don't know who...... all I

posted on October 1, 2008