1. Global Studies

1. Humans Migrated to the following areas in which order? • 1, 2, 4, and 5 • 1 and 3, 6, 2 • 3, 1 and 4, 5 • 3, 6, 1 and 2 My answer is 1, 2, 4, and 5 2. Which statement is correct • Aborigines were the first people to settle Australia and New

2. Geometry

justify the last two steps of the proof. Given: ABCD is a parallelogram. Prove: triangleABC = triangleCDA 1. ABDC is a parallelogram 1. given 2. AB = DC and BC =DC 2. opposite sides of a parallelogram are congruent 3. AC = CA 3. ? 4. triangleABC =

3. algebra 2

if the equation for the regression line for the data set (3,6), (6,2), (9,10) is y=2/3x+2, what is the sse for the data set? A. 16 B. 10 C. 4 D. 24

4. Algebra 1

A square painting is surrounded by a frame. the outside edges of the frame are x inches in length, and the frame is 3 inches thick. What is the total area of the frame? A)-12x+36 B)12x-36 C)x^2+12x+36 D)x^2-12x-36 Is it C or D?

5. Physical Science

Sodium (Na) reacts with chlorine gas (Cl2) to form sodium chloride (NaCl) as shown in the equation 2Na+Cl2=2nacl If 4 moles of sodium react, how many moles of chlorine gas will react? I have no idea what to do.......... I need some assistance thanks

6. help math

1.Write the ratio in the simplest form 16:24 1:2 4:3*** 3:4 2:3 2.Solve the following proportion p/6 =7/8 p=5.25*** p=8 p-10.5 p=42 3.James has a model helicopter. The model is 8 inches long and 7 inches wide. The actual helicopter is 56 inches long. What

7. English

The speaker in “Mending Wall” feels the wall is (1 point) unnecessary since they have different types of orchards. important for keeping good relationships in the neighborhood. a tradition that reminds him of his father’s generation and era. a way to

8. math

What is the recursive rule for an=2n+11? a1=13;an=an−1+2 a1=13;an=an−1+11 a1=2;an=an−1+11 a1=11;an=an−1+2

ABCD is a quadrilateral with angle ABC a right angle. The point D lies on the perpendicular bisector of AB. The coordinates of A and B are (7, 2) and (2, 5) respectively. The equation of line AD is y = 4x − 26. find the area of quadrilateral ABCD

10. Math

What are two mixed numbers so that the sum is 7 2/4 and the difference is 5

11. Probability

A newborn baby whose apgar score is over 6 is classified as normal and this happens in 80% of births. As a quality control check an auditor examines the records of 100 births. He would be suspicious if the number of normal births in the sample of 100

12. History - Help

In the French colonies of West Africa, an effort was made to establish a Francophile community, wherein people of the different colonies embraced French culture. This effort was: A. a total failure. B. in fact, mainly successful in French Indochina. C.

13. SAT Math Question?

Which of the following accurately defines all possible values of p-q if 15≤p≤30 and 7≤q≤19? The answer is -4≤(p-q)≤23, but I'm not sure how. Thank you!

14. data management gr.12

How many different sums of money can you make with three coins of different denominations? Thanks

15. History - Help

Regarding peripheral countries or regions, all of the following are true EXCEPT: A. they are all dependent on core countries for capital. B. the term peripheral is not necessarily synonymous with poverty. C. most of the impoverished countries are in

16. physics

A pendulum suspended from the roof of a bus moving along a horizontal track makes an angle of 5° with the vertical,,,determine the acceleration of the bus?

17. Maths

The volume of a cube is 27cm3. Find the length of edge

18. physics

A child of mass 40kg jumps off a wall and hits the ground at 4m/s he bends his knees and stops in 1s calculate the force required to slow him down how would this force be different if he didn't bend his knees and stopped in 0.1s

19. data management gr.12

Kirk and Les regularly play each other at darts. The probability that Kirk wins any game is 0.3 and the outcome of each game is independent of the outcome of every other game. a)Find the probability that in a match of 15 games Kirk wins b)find the expected

20. math

There are 70 woman in a club. Each plays at least one of the following games: volleyball, basketball and table tennis. 20 play volleyball only,10 play basketball only and 6 play table tennis only. 4 play all the three games and an equal number play two

21. MATH

A scientist needs 80 liters of a 30​% acid solution. He currently has a 20% solution and a 60% solution. How many liters of each does he need to make the needed 80 liters of 30​% acid​ solution?

22. Bree

Can someone help me answer this for my portfolio for the Citizenship and the Constitution portfolio? Compose a general introduction about the concept of American citizenship and democracy.

23. Calculus

If y = 2x - 8, find the minimum value of the product of xy. I think this is -8.

24. Physics

A lump of lead with mass 0.5kg is dropped from height of 20m onto a hard surface it doesn't rebound but remains there at rest for a long period of time. A, find change in heat , change in work, change in internal energy for the lead during this process?

25. Physics

A lump of lead with mass 0.5kg is dropped from height of 20m onto a hard surface it doesn't rebound but remains there at rest for a long period of time. A, find change in heat , change in work, change in internal energy for the lead during this process?

27. History - Help

The French wars of religion amounted to a civil war that ended in: A. the conclusive victory of the Roman Catholic Church. B. a protracted and inconclusive stalemate. C. the conclusive victory of the Protestant Huguenots. D. the expulsion from France of

28. co-ordinate geometry

S is the point (4,0) and M is the foot of the perpendicular drawn From a point to the y-axis.If P moves such that the distance PS and PM remain equal,find the locus of point P

29. Linear Algebra

which of the following functions is the inverse of F(X)=3x F(X)=-3X F(X)=X (cubed)**** F(X)= X/3 This function does not have an inverse. Thank you!

30. History - Help

The concept of national sovereignty was established by: A. the European invasion of the Holy Lands. B. the Treaty of Westphalia. C. the Protestant Reformation. D. The Peace of Augsburg. An: B

31. Science Chemistry

The elementary analysis of 22 g hydrocarbon sample results in 18 g C and 4 g H. a) Choose the correct chemical formula of the hydrocarbon: i) CH4 ii) C2H4 iii) C3H8 b) What is the amount of CO2 in grams formed by the total combustion of hydrocarbon? Assume

32. algebra

Will you please show me how to completely factor this expression 2a^2c^3-14bc^3+32c^3d^2 Thank you very much for your help.

33. English

1. Some of his pictures seem to be close to what's happening now. 2. Some of his pictures seem close to what's happening now. 3. Some of his pictures seem to be close to the thing which is happening now. 4. Some of his pictures seem to be close to the

34. Algebra

What type of polynomial is this? 2 - 5x^3 + 6x A)not a polynomial B)cubic trinomial C)quadric trinomial D)fourth-degree trinomial Since the degree is 4, I think the answer is D. Is this correct?

35. Math

Sides of a quadrilateral are all positive integers.How many possible values the fourth side have if three of its sides are 5cm,10cm,20cm?

36. chemistry

A 0.50 g mixture of Cu and CuO was treated with hydrogen at elevated temperature. CuO was reduced to Cu . (b) Before the experiment, calculate the minimum amount (in mole) of hydrogen required to ensure the reduction is completed. (3 marks) (c) After

37. physics

A geostationary satellite for communications seems to be in a fixed spot above the equator because it has the same angular velocity as the earth.A) show that if it goes round once a day,its angular velocity is a little over 7Ã—10 race to negative 5 rad

38. Social

To what extent should individuals play a role in serving their nation when the nation is self-interested? I think that they should play a role because they belong to the nation. Their voice matters, and even though the nation is still thinking about only

39. Science: Physics

An electric heater of power 2500 W is connected to a voltage of 230 V. i) Calculate the electric current going through the heater. ii) What is the resistance of the heater? iii) How much energy does it consume in a year, if it is switched on 15 min every

40. data management gr.12

A hamburger restaurant offers 2 types of buns, 3 types of meat burgers and 4 types of different toppings. How many different hamburgers can be prepared if the chef must choose 1 bun, 1 meat burger but can have no topping, one topping or more than one

41. Politics

How many states don't have laws prohibiting faithless electors? I can't find a site that has a clear answer.

42. data management gr.12

A particular genetic trait occurs in 2% of the population. The reliability of a test to discover the trait is: if the person has the trait then the test is positive 98% of the time, but the test is also positive 3% of the time for those that do not have

43. algebra

Please show me how to simplify: (p^2+4p-23)-(3p^2-23p-23) Thank you so much.

44. Probability

Consider 100 blood donors chosen randomly from a population where the probability of typer a is .40? What is approximate probability that at least 43 donors will have type blood?

45. math help

Find the unit vector perpendicular to each of the vectors 2i+j+k and i-j+2k?

46. Science: Physics

We use an electric immersion heater to heat 2,0 liters water having temperature of 20C to the boiling point. Specific heat capacity of water is 4,19 kJ/(kg c). The power of the heater is 1,50 kW and efficiency of heating is 80 %. How much time does the

47. math

arrange smallest to largest 3/4,2/3,5/9,5/6

48. math

the measures of a pair of two adjacent sides of a parallelogram are 15cm and 20 cm.if the length of one of its diagonal is 25cm, find the area of the parallelogram

49. math

x+y+√z=148 x+√y+z=82 √x+y+z=98 find x,y,z. Please give full solution and how to find with complete logic.

50. math

sasha used 55% of her savings to buy a game. She has \$135 remaining. How much was her savings before buying the game?

51. Linear Relations MATHS

If A = (-4,6) and B = (6,-7), find: (a) the coordinates of the point P on the line segment AB such that AP:Pb = 3:1 (b) the coordinates of the point P on the line AB such that AP:AB = 3:1 and P is closer to point B than to point A

52. math

0Âºâ‰¤Aâ‰¤90Âº and 3tan2A = 2tanA + 1

53. math

if tan(a+b)=2/3 and tan(a-b)=2/5 then find the value of tan2b.

54. geo

Why is amazon basin ecologically imp.

asked by why is amazon basin ecologically imp
55. Statistics

The monthly salaries (in thousands of dollars) of a sample of sales representatives are as follows: 13, 7, 10, 9, 8, 13 Find the standard deviation of this sample of monthly salaries. Round your answer to at least two decimal places.

56. Mathematics

by driving a car at a speed of 50km/hr . I reach the airport in 30 minutes.at what speed should I drive to reach in 25 minutes?

57. Transformations - Maths

List a sequence of transformations which maps the graph of y=x^2 to the image with equation y=4*(2x-3)^2 + 1

Find a formula which gives the number of matches, S, required to construct n diagram. Diagram 1 has 8 matches Diagram 2 has 15 matches Diagram 3 has 22 matches

59. Maths

If the perimeter rectangle is 250cm and its breadth is 50cm, it length will be?

60. data management gr.12

In how many ways can a committee of 8 members be chosen from 7 males and 9 females if the committee must contain at least 3 males? Please verify if my solution is correct: total# of 8 members 16C8 #with NO males 7C8 # with at least 3 males (7C3 x 4C2)+

61. math

What is 3 times the quotient of n divided by 5?

62. Scholarships

I am a middle-schooler that is going to skip a year to go straight to high school. I have been looking for scholarships I can apply to now. Do you guys know any good sites?

63. algebra

How do I simplify (2m-4)(m^2+2m+4)? I appreciate your help,thank you.

64. Math

If a person buy a book for ₹36 which is available on 40% discount off the original price what original price of book

65. Maths

When 100 is added to a number the result is 50 more than 3 times the number . Find the number

66. Specialist Mathematics

Need help with three proofs. Proof#1: Prove that |x+y| is less than or equal to |x|+|y| Proof#2: Prove that |x|-|y| is less than or equal to |x-y| Proof#3: Prove that |x+y+z| is less than or equal to |x|+|y|+|z|.

67. Maths - Linear Relations Simple Problem

Find the values of m for which the line with equation y=mx+2 does not intersect the parabola with equation y=(x-1)^2 + 5. I am not sure how to solve this problem. I know that both equations equal each other when it intersects but what happens if they don't

68. Easy Maths Question

A manufacturer of souvenir items makes key rings which sell for \$5.80 each. The cost of manufacturing is \$1250 to set up the process, and then \$0.80 per key ring. 1) Write a rule for the income in dollars, S, from selling n of these key rings. 2) Write a

69. Science Chemistry

according to the reaction below: 4 NO + 3 O2 + 2 H2O → 4 HNO3 a) 0,001 g of NO dissolves into 1 liter of rainwater and all of it transforms into nitric acid. What is the molar concentration of nitric acid in the rainwater? b) Supposing that no other

70. Science Chemistry

Phosphorous (P) is an indispensable nutrient in food production. According to the estimates, mineral phosphorous resources will end up within 50 years and consequently new sources of P has to be found. A human excretes 2,2 g of phosphorous (P) per day on

71. math

When 100 is added to a number , the result is 50 more than 3 times the number. Find the number

72. English

1. People always imagine the future to have machines that are magically helpful. 2. People always imagine the future to have "the" machines that are magically helpful. ----------------------------- Are both okay? Do we have to use 'the' or not in this

73. Chemistry

I have asked this question before but I was not clear enough. I want to prepare a 37% w/w solution (in water)of sulfuric acid from 96% sulfuric acid. I need around 500ml, I know it won't be exactly that, I want to know how to use the conversion using

74. science

no. of mole in 4.4 g Co2 is ……… .

75. Algebra 1b

Task 1—Shipping a gift. You have selected a special gift for a cousin or other family member of similar age. You’re not close enough to deliver it by hand, so you will need to ship it to him or her. What did you choose for a gift? What size box will

76. Chemistry

Hi, How do you know how many ligands a metal ion needs to form a complex ion? So for example, with (Fe(H20)6)2+, how am I supposed to know that the Fe needs 6 H20's, rather than 4? Thank you!

77. electrical energy and power

determine the overall efficiency of a motor that deliveries 2 horsepower to a load if it draws 7.5 amperes when connected to a 240 volt supply.