# Questions Asked onJune 12, 2017

1. ## maths

the length of a rectangle is 4 times than its width. the area of the rectangle is 1024cm2 find the length of the rectangle the perimeter of the rectangle 4 square has the same perieter as that its rectangle. Find the area of the square.

2. ## Chem 1

Use oxidation states to identify the element that is being oxidized in the following redox reaction: Cu(s)+2 H 2 S O 4 (aq) → CuS O 4 (aq)+S O 2 (g)+2 H 2 O(l)

3. ## Math

Tom sold half of his comic books and then bought six more. He now has twelve. How many did he begin with?

4. ## Math

Calculate the probability that 200 rolls of two dice rolls will include a) more than 30 sums of 5 b) between 30 and 40, inclusive, sums of 5

5. ## chemistry

Consider the following equation: CO + 2 H2 → CH3OH △H rxn = -128 kJ Calculate the amount of heat (in kJ) associated with complete reaction of 8.08 g H2. how would i set this up?

6. ## math

Express this ratio as a fraction in its lowest term ?25cm to 3m.

7. ## math

If a single die is tossed once, find the probability that you roll an odd number. 3?

8. ## math PLZ HELP

Which expression represents 12 times the number n? a: n+12 b: 12n c: n-12 d:n/12

9. ## computer

A coworker calls you at 9:00 a.m. at work and asks for a favor. He is having car trouble and will be an hour late for work. He explains that he has already been late for work twice this month and that a third time will cost him four hours of pay. He asks

10. ## math

Two sides of a triangle measure 25 cm and 35 cm.Which could be the third side.

11. ## Math - algebra

Oceanside bike rental shop charges 14 dollars plus 9 dollars an hour for renting a bike. Joan paid 86 dollars to rent a bike. How many hours did she pay to have the bike checked out? X is unknown N= 9h+14 86= 9h+14 86-14

12. ## English

I called you several times, but you didn't answer me. Where were you? I was at home, listening to music. ------------------------------------ [In this situdation, can we use both sentences? Are both the same in meaing? Which one is commonly used?] 1. I was

13. ## geomtry

A parallelogram is transformed according to the rule (x, y) â†’ (x, y). Which is another way to state the transformation

14. ## physics

Two boxes are connected by a cord running over a pulley. Box A is on a table and Box B is hanging off of the pulley. The system is released from rest and Box B drops a distance D. What is the word done by gravity on box B?

15. ## Chemistry- Henry's Law

Why Ammonia is a deviation from the Henry's Law,when it is dissolved in water? Does that has anything to do with Ammonia having Hydrogen bonds? Or what could be the reason?

16. ## math

If a single die is tossed once, find the probability that you roll 6 or 5 or 1. is it 1/6 ? or 1/2 ?

17. ## math

If a single die is tossed once, find the probability that you roll 9. A. 9 B. 0 C. 1 D. 9/6 a?

18. ## Science

A body travells along the circular path of radius 70m after travelling half a revolution in 20sec find avrage velocity and avrage speed

19. ## Math

sum of money borrowed at a particular rate of interest amounts of Rs 8320 in 2years and Rs 9685 in 3 and half years.Find the sum borrowed

20. ## Geometry

Which of the following describes the growth rate of the exponential function in the graph below?

21. ## Algebra

1. Draw an algebra tile model for the polynomial in simplified form: 8x^2 - 4x -3x^2 + 6 + 2x -7 8 big blue squares, 4 bars, 3 big red squares, 6 little yellow squares, 2 green bars, 7 little red bars; (is this correct?) 2.Study the diagram of algebra

22. ## Organic Chemistry

What will happen from the following if H3C-C6H6-N2Cl is treated with Na2CO3? a)CO2 will emit 2)NH3(g) will emit c)N2Cl-C6H6-CH3 will be produced d) NH2-C6H6-CH3 will be produced We get C6H6-NH2 when Sn/conc.HCl are reacted with Nitro Benzene.This become

23. ## Chemistry

Under special conditions D2 is reacted with Ca to make CaD2.What would result if D2 is reacted with H2O?

24. ## Chemistry-titrations

When an acid is titrated with a Carbonate, do we have to heat the system when Hph is the indicator? If so what is the reason?

25. ## math

If we express 3x^2 - 6x - 2 in the form a(x - h)^2 + k, then what is a + h + k?

26. ## MATHS

IF C IS JOINTLY VARIES AS S AND INVERSELY VARIES AS THE FORTHROOT OF M WHERE C=23083 AND M=256 WHERE S=55 FIND THE FORMU

27. ## Math

A map has a scale of 2 cm for every 25 miles. The distance on the map between Griffin Park and the San Diego Zoo is 10 cm. How far is the actual distance?

28. ## science - physics

A car us moving with a speed of 60km per h . suddenly the breaks are applied , and the car brought to rest in 10 sec. calculate the accelaration of the car.

29. ## Mathematics-Integration

How do we integrate {[1/(√(1-x^2) )]*[ln|(2x+3)(√(1-x^2))] } ? Is there any suitable substitution or do we have to do this by parts? I don't have any idea to proceed on.

30. ## physics

A boat crosses a river of width 174 m in which the current has a uniform speed of 1.13 m/s. The pilot maintains a bearing (i.e., the direc- tion in which the boat points) perpendicular to the river and a throttle setting to give a constant speed of 0.96

31. ## Math

Simplify the polynomial 2x^2 + 6x - 7x + 8 - 3x^2 + 1 A)2x^2 + x + 9 B)-2x^2 - x - 9 C)-x^2 - x + 9 D)x^2 + 9 Please help me

32. ## Math

Four number have an arithmetic mean of 6 if fifth number is added to set the mean rises to 8 what is number added?

33. ## Math

The usual price of a swimsuit was £60.A discount of 15% was given at a sale.Davinda bought the swimsuit and gave the cashier £100.How much change did she receive?

34. ## Math

Printer A prints 50 cards per minute while Printer B prints 40 cards per minute.How long will it take both printer working simultaneously to print 1350 cards together?

35. ## physics

A world-class sprinter can burst out of the blocks to essentially top speed (of about 14.9m/s) in the first 11.6m of the race. How long does it take her to finish the 200m race?

36. ## Maths

x+2y=9 2x-4y=2

38. ## Maths

Use graphical method x+2y=9 2x-4y=2

39. ## maths

Solve for all x such that: (1+(1/x))^(x+1)=(2000/1999)^1999

40. ## physics

A 5kg block is being moved to 3m by a force of 50N inclined to the horizontal at an angle of 30°. Assuming that a friction force of 5N opposing its motion ,find the acceleration of the block and the work done by the block.

41. ## History (1900’s)

Hey peeps can you guys pretty please give me a list of the challenges of immigration in the 1900's? I have been researching for like literally tree days. Please help me before I melt~ I have this: Immigrants may have been turned down at the front gates.

42. ## Health Care Statistics

Computers are great for performing statistical calculations, but they must be programmed accurately to calculate correctly. When is statistical data considered “garbage” and how do you correct it? help?

43. ## Language Arts

Think about the work you completed in your reading character role. Determine the ideas that would be most worthy to share in a literary discussion about Dragonwings. Provide an explanation for your choices. How did the role you selected and the work you

44. ## physics

Why is that a lighter object with the higher velocity produces a higher kinetic energy than a heavier object with lower velocity ?

45. ## maths

(x+y)(x+z)(y+z)=2017^n What is the minimum value n of such that there exist positive integers x,y and z satisfying the equation above?

46. ## Health Care Statistics

A hospital that is allowed to use its beds for either acute care or skilled care is referred to as a _____. A. Swing bed hospital B. Tertiary care hospital C. District hospital D. Long term care hospital E. None of the above, it should be

47. ## math

Find the 6th term in the expansion (x^2 - 1/x)^25 It is a Binomial Theorem problem and I am extremely confused. Please and thank you!

48. ## Math

The number of subject passes obtained students in 8 grade examination are tell(3 3 4 3 5 3 2 2)(2 3 1 3 4 2 6 3)(4 3 2 0 3 3 3 4)(2 1 2 4 3 3 2 2) A)make a frequency distribution table of passes obtained by students. B)how many students were in the class?

49. ## Electrical

A circuit consists of parallel combination 8&12ohms& unknown resistance of R ohm is connected in series with it the total power consume is 70w. When the source voltage is 20V calculate the value of unknown

50. ## Chemistry

When you pour molten salt(NaCl) into the water, it explodes. But if you pour molten sodium bicarbonate into the water, there's no explosion. Why is this happening???﻿ I'm so confused and I have seen a video of this actually happening. Please help!

51. ## Physics

5liters of alcohol has a mass of 4kg.the density of alcohol?

52. ## Math

Draw a circle with 5cm radius. Inscribe a triangle with side ratio 5:6:7 in it.

53. ## math

if c is jointly varies as s and iversely varies as the forthroot of m where c=number and m=256 where s=55(1)find the formula connecting the variable?

54. ## Math

In how many ways a set can be written? Two or three. I am confused please tell me correct.

55. ## math

Solve: [(1+(1/x)]^(x+1)=2.717602229679

56. ## math

June earns \$13650 dollars in a year. She has to pay 12.5% tax on this amount. How much tax does she pay?

57. ## Maths

Alisa has a stride of 0.5 a metre. If she travels by walking 2 steps forward and one step back, What is the least number of steps she needs to reach a spot of 20 metres? BTW answer is not 120 m

58. ## maths

the length of a rectangle is four times that its width. The area of the rectangle is 1024cm2 find the width of the rectangle

59. ## math

At the beginning of the year business had total assets of 50,000 and total liabilities of 15,000. if total liabilities decreased by 10,000 during the year how much the amount of total assets in the end of the year?

60. ## Maths

A bus travels at 70km/h for x hours and then at 80km/h for 0.5(x+3) hours. the total distance travelled was 460km. Determine x correct to the nearset minute.

61. ## Mathematics-Integration

Question: For any positive integer n,show that integrate.[(sin x)^2n dx ] from o - π/2 = [(2n)!*π]/[(2)^(2n+1)*(n!)^2 ] What I thought: Let I =int.[(sinx)^2n dx] And again I= int.[ (sin(π/2-x))^2n dx] = int.[ (cos)^2n dx] 2I= int.[(sin x)^2n + (cos

62. ## math

Simplify the expression 3(7 – x) + 5. A. 26 – x B. 16 + 3x C. 26 – 3x D. 16 – 3x C?

63. ## Mathematics-Integration

Question: f(x)=ax^2 + bx + c {a,b,c €R} When 0

64. ## physics

vector A = a displacement of 20 m due east vector B = a displacement of 30 m north find the magnitude and direction of the vector sum a+b

65. ## English

The dog's master worked in the workplace. Later he came back home. He saw his dog. He said, "I'm home." -------------------------------- Can we use 'I'm at home.' in this situation? What is the difference between them?

66. ## math

Simplify the expression 4(x – 3) + 2. A. x – 10 B. 4x – 1 C. 4x – 14 D. 4x – 10 D?

67. ## English

1. He saw most of the boys. 2. He saw most of his boys. 3. He saw most of these boys. 4. He saw most of some boys. 5. He saw most of ____ boys. ------------------------------------ Q1: Are the sentences all grammatical? What about #4? Can we use #4? Q2:

2(3a + 4)

69. ## Math probability

I have got 18 red , 12 green, 5 blue and 5 yellow balls in the bag. What is the probability that I pick excatly 2 green when I pick 4 at random ? What is the probabily that none are yellow after I pick 4 at random ? Thanks.

70. ## Micoeconomics

Explain the profit maximation conditiond of multi plant monoplist?

71. ## physics

A mountaineer is doing a vertical rappel. She is using a big boulder as her anchor. The Mountain guides association advises that in this type of situation, the boulder should be bigger than a refigerator and should be sitting on a surface that is

72. ## Math

I have got 18 red , 12 green, 5 blue and 5 yellow balls in the bag. What is the probability that I pick excatly 2 green when I pick 4 at random ? What is the probabily that none are yellow after I pick 4 at random ? Thanks.

73. ## economics

Define utility using mathmatical expression.

74. ## Economics(help!!!)

A monopolist is deciding how to allocate output between two markets that separated geographically. Demands for the two markets are P1=15-Q1 and P2=25-2Q2.The monopolist's TC is C=5+3(Q1+Q2).What are PRICE,OUTPUT,PROPISTS, MR if a)the monopolist can price

75. ## statistics

A female patient has had her red blood cell count tested on 6 occasions. A mean of 4.4 with sample standard deviation, s, of 0.28 was found. Generally, healthy, female adults have a red blood cell count of 4.8. Conduct a hypothesis test to determine if the

76. ## Physics

What is the weight (in Newtons) of a 98.17 kg mass?

77. ## Algebra 2

The average daily minimum temperature for Pablo’s hometown can be modeled by the function f(x)=15.3sin(πx6)+44.1 , where f(x) is the temperature in °F and x is the month. x = 0 corresponds to January. What is the average daily minimum temperature in

78. ## probability

Collin has a fair coin and a fair 10-sided number cube labeled 1-10. He performs this experiment 150 times to determine the experimental probability that heads is tossed and the number 2 is rolled. Which of the following is most likely to be the

79. ## Physics

Two particles are moving in a plane; one has the velocity component vix=1m/s, viy=5m/s and the other has the velocity components v2x=4m/s and v2y=3m/s if both started from the same point what is the angle between their paths

80. ## Chemistry - percipitates

10g of AgI is dissolved in 100cm3 of water and Na2SO4(s) is added to the solution with the ppt.After about 10mins.25cm3 of the solution is taken and added Cl2 and heated.The remains Cl2 is removed and a small amount of KI(s) is added and then the solution

81. ## probability

Collin has a fair coin and a fair 10-sided number cube labeled 1-10. He performs this experiment 150 times to determine the experimental probability that heads is tossed and the number 2 is rolled. Which of the following is most likely to be the

82. ## Chemistry

What is more basic KO2 or KOH? I know that KO2 is also craeted this way; KO2 + 2H2O ----> 2 KOH + H2O2 + O2 I think,as KOH is created by this reaction and KO2 being a raectant, the compounds created should have less strong,more stable characteristics when