# Kenny

Popular questions and responses by Kenny
1. ## statistics

A committee of three people is to be formed. The three people will be selected from a list of five possible committee members. A simple random sample of three people is taken, without replacement, from the group of five people. Using the letters A, B, C,

2. ## Calculus

a rectangular storage area is to be constructed along the sides of a tall building. A security fence is required along the three remaining sides of the area. What is the maximum area that can be enclosed with 1000m fencing?

3. ## Math

Suppose the Bainters purchase the \$150,000.00 home with a 20% down payment, a 30-year mortgage, and an interest rate of 4.2%. Annual property taxes are \$1920.00. Home insurance is \$750.00 per year, which is to be placed into an escrow account. What is the

4. ## Algebra 2

D'Andre has decided that he needs to get more exercise, so he is building a running regimen for himself. He decides that, beginning on Sunday, he'll fun 10 feet. On each subsequent day he'll double the distance he ran the previous day. So he'll run 20 feet

5. ## Math

a surveyor is 3 miles from a mountain. The angle of elevation from the ground to the top of the mountain is 15 degrees. What is the height of the mountain?

6. ## physics

A metal block of mass 5kg lies on a rough horizontal platform.If a horizontal force of 8N applied to the block through its centre of mass just slides the block on the platform,then the coefficient of limiting friction between the block and the platform is

7. ## investment

The price of consolidated everything is now \$75. The company pays no dividends. Ms. Bossard expects the price 3 years from now to be \$100 per share. should Ms. Bossard buy Consolidated e. if she desires a 10% rate of return?explain

8. ## Math

Examine the diagram. A piston rod, PQ, is connected to a wheel at P and to a piston at Q. As P moves around the wheel in a counterclockwise direction, Q slides back and forth. there's a unit circle. origin to intersection at (1,0) is point P. Extending

9. ## Math

Find the period and the amplitude of the periodic function y=3cos 4x

10. ## Physics

9. A lump of gold sample is suspected to have a mass of 500g and is found to have a relative den of 5.2 Find what mass of gold is present in the sample If the relative den of gold and aluminium are 19.3 and 2.6

11. ## Maths:calculus

How do I prove that integral e^((x^2020)/n))dx where the lim n tends to infinity and the boundaries of the integral is from 0 to 2019 How do I do this??

12. ## Math-college

Combined, there are 178. ​Asians, Africans,​ Europeans, and Americans in a village. The number of Asians exceeds the number of Africans and Europeans by 69. The difference between the number of Europeans and Americans is 7. If the number of Africans

13. ## math

Lisa deposits \$3000 in an account that pays 2% simple interest, and \$4000 in a second account which has a higher interest rate but is more risky. What minimum interest rate must she get on the second account in order to earn at least \$700 in interest for

14. ## math

A stereo is bought for \$1500 and sold 4 years later for \$800. a) Find the depreciation equation. b) Assuming the depreciation is linear, find the value of the stereo after the first five years of ownership.

15. ## Physics

A magnetic bar is moved toward a 40 turn circular coil of wire. If coil radius is 3.05 ohms Find the magnitude of A) the induced E. M. F B) the induced current How?

16. ## English

between differentiate and derivatives. Which is a verb and which is a noun??

17. ## Geometry

As in the diagram,let A,B,C,D be the centers of the 4 balls in the bottom layer,and A',B',C',D' be the center of the 4 balls in the upper layer.then A,B,C,D and A',B',C',D' are the 4 vertice of the squares of length 2cm,respectively, now the circumscribed

18. ## Maths

A ship P sails at an average speed of 50km/hr on a bearing of N55 degree E from a point R.At the same time another ship Q sails at an average speed of 40km/hr on a bearing of S25 degreeW.How far are they apart after 4hours

19. ## math, algebra

If A>B and B(B-A)>0, which of the following must be true? I. B

20. ## math

For each of the following examples: i) Express the negation of the statement using propositional notation, simplifying as much as possible, and ii) Express the statement (and its negation) in words, for the provided propositional functions. (a) ∀x, (p(x)

21. ## math

Let f(x) be a twice differentiable function (i.e. f(x), f′(x) and f′′(x) are defined for all x), and let a ∈ R (a is a real number). If f′(a) = 0 and f′′(a) > 0, then a is a strict local minimum of f. (a) Express the second sentence in

22. ## Science

Calculate the frequency of rotation of the second hand clock

23. ## math

if 1 quart of a concentrate makes 15 gallons, how much of the concentrate will be needed to make one quart of the mixture

24. ## Math

Sketch a possible graph for a function where f(-2) exists, lim as x->-2 exists, f is not continuous at x=-2, and lim x->1 doesn't exist. How do I make this graph exist at x->-2 but still be discontinuous?

25. ## Math

Please help me with this home work Triangle ABC ~ Triangle ADE AD=5; DB=3.5; BC=5.1; AE=6; EC=x What is the length of AB? What is the length of DE? Write an expression that represents AC? What is the length of EC? What is the length of AC? Thank you

26. ## Algebra

Name the axis to which major axis is parallel and find the center of 9(x + 1)² + 27(y - 1)² = 81

27. ## Physics

a person standing at the edge of a seaside cliff kicks a stone over the edge with a speed of 10 m/s. the cliff is 48 m above the water's surface as shown. how long does it take for the stone to fall to the water? the acceleration of gravity is 9.81 m/s2.

28. ## College Algebra 1

Using the factoring method, solve for the root: 10x^2-41x=-21

29. ## Math

Suppose there is a cow that is tied to the corner of a barn with a rope as shown in the figure below. One side of square barn measures 50 yards and all the doors on the barn are closed, so the cow cannot enter the barn (he must walk around the sides only).

30. ## math

please show me how to solve this (2x - 5y) power of 2 i am having a problem with the way to step by step please solve this

31. ## calculus

a rectangular box with a square bottom is to have a volume of 1000 cubic inches. the bottom cost \$100 per cubic inch, the sides are \$25 per square inch and there is no top. what are the dimensions of the box that has materials costing the least

32. ## Finance

Calculate the accounts receivable period, accounts payable period, inventory period, and cash conversion cycle for the following firm: Income statement data: Sales 5,000 Cost of goods sold 4,200 Balance Sheet Data: Beginning of Year End of Year Inventory

33. ## Math

A shoe company will make a new type of running shoe. The fixed cost for the production will be \$54,000. The marginal cost will be \$25 per pair of shoes. The shoes will sell for \$115 for each pair. a) Write the cost function b) Write the revenue function c)

34. ## Biology

Could someone please help me answer the following questions; 1. What unique property of carbon is responsible for the large number of organic compounds? 2. Alkanes, alkene and alkynes are all insoluble in water whereas alcohols, aldehydes and ketones are.

2x2-3x-5

36. ## Lang Arts

Have you read this book called the outsiders well i need to do an oral presentation on it Here is a poem i need to know how this poem relates to the story and some other details with evidence from the story. Poem: Nothing Gold Can Stay Natures first green

37. ## Chemistry

How do you decide orbital hybridization of molecules?

38. ## Physics

12. A body of mass 2kg and a Vol of 0.0005m³ is hung from a balance graduated in Newton . What would be the balance read when the body is in air ? When it is fully immersed in water ? When it is immersed in paraffin of of density 800kg? How help me

39. ## Maths:Logarithms

Find the sum of all value(s) of b such that 11/[log_2 (x)] + 1/[2 • log_25 (x)] - 3/[log_8 (x)] = 1/[log_b (x)] for all x > 1. log_b (x), which means "the logarithm of x, base b."

40. ## Math

For what real value of x the following inequality holds: (4x²)/[1 - √(1 + 2x)]² < 2x + 9 ?

41. ## Mathematics

azmin decided to get some exercise by taking the stairs from the first to the fifth floor in her apartment building. The first time she went up the entire flight, she walked up some steps and ran up 16 steps. This took a total of 60 seconds. The second

42. ## Maths

Louis has m shirts , n trousers and r caps , show that Louis has m × n × r different outfit combination without using a tree diagram. How?

43. ## Maths

(a+b+cc)^(2017)+(a-b-c)^(2017) When simplified how many terms would that be? can we try this? i saw it in IMO past question I couldn't do it Sir obleck I search for that book you said ,but no luck for me ....I only have 2014 past question but it hasn't

44. ## Maths:

As in the diagram,let A,B,C,D be the centers of the 4 balls in the bottom layer,and A',B',C',D' be the center of the 4 balls in the upper layer.then A,B,C,D and A',B',C',D' are the 4 vertice of the squares of length 2cm,respectively, now the circumscribed

45. ## algebra

On a map, 1 1/4 inches represents 50 miles. Determine the distance between two cities that are 4 inches apart on the map.

46. ## Maths

A ship travels at a steady speed. It takes 43 hours to cover a journey of 1,032km. What is the speed of the ship.

47. ## math

You invest ​\$ 3000 3000 in an account that pays simple interest of 6 6​% for 20 20 years.

48. ## Math

50√3/2-20√3/3-25√3/3 with step by step plz

49. ## Math

50√3/2-20√3/3-25√3/3

50. ## Science

A 50-kg block is being pulled up a 30.0^ slope by force of 250N which is parallel to the slope, but the block does not slide up the slope. What is the minimum value of the coefficient of static friction required for this to happen?

51. ## algebra-math

Combined, there are 184 ​Asians, Africans,​ Europeans, and Americans in a village.The number of Asians exceeds the number of Africans and Europeans by 61. The difference between the number of Europeans and Americans is 11. If the number of Africans

52. ## Operating systems

Is there a Windows 3.5?

53. ## critical thinking

explain how rhetorical definitions, rhetorical comparisons, and rhetorical explanations differ

54. ## Math

A high fountain of water is located at the center of a circular pool as shown in the figure below. Not wishing to get his feet wet, a student walks around the pool and measures its circumference to be 19.0 m. Next, the student stands at the edge of the

55. ## math

The measure of one angle is six more than three times the measure of another angle. If the two angles are complementary, find the measure of each. i keep trying to answer these type of questions but i always get the wrong answer?

56. ## math

A profit function is derived from the production cost and revenue function for a given item. The monthly profit function for a certain item is given by P(x)=−0.05x2+500x−100,000, where P is in dollars and x is the number of units sold. 19a. How many

57. ## math

solve: −4≤2x+6

58. ## math

A real estate company has a fleet of cars. The annual operating cost per car is C = 0.25m + 1300, where m represents the number of miles traveled per year. Find the maximum number of miles that each car can travel per year to yield an operating cost of no

59. ## math

An oil company operates two Southern refineries. The Alabama facility produces 500 barrels of high-grade oil and 200 barrels of medium-grade oil per day. The Texas facility produces 600 barrels of high-grade and 400 barrels of medium-grade oil per day. By

60. ## math

Children and adult tickets were sold for a local play. The children and adult tickets sold for \$11 and \$16, respectively. If 150 tickets were sold, and the total revenue was \$2250 for the night, find the number of children and adult tickets sold.

61. ## math

A pool can hold 2050 gallons of water, and it is being filled at a rate of 50 gallons per hour. The pool currently has 300 gallons in it. a) Write a linear equation which represents number of gallons in the pool. b) How long will it take to finish filling

62. ## world history

What is the most likely explanation for why the Shang had little interaction with non-Chinese cultures?

63. ## geography

a person could be fined up to 1000 dollars or be imprisoned for breaking the law stated in the _________.

64. ## Math

Let ABCD be a square, and EFGH be a square whose area is twice that of ABCD. Prove that the ratio of AB to AC is equal to the ratio of AB to EF

65. ## math

Given that i=\$700,p=\$3,500 and t=4yrs. Find the rate

66. ## English

I don't know what the quotes R for the poem the city is so big

67. ## Math

piece wise function{y=x^2-2, x=1. find slope of tangent at x=1 of piece wise function. So is it 2, 1.5, or no tangent? I am confused by the 2 graphs(piecewise). Thanks

68. ## Math

lim (6x+1)/(|6-2x|) as x->infinity is what number? I thought it was 0, but answer key says 3. How?

69. ## Math

How do I do this question: find slope of the curve y=1/(X-1) at X=2. I don't get the algebra here, how is it equal to -1? Thanks

70. ## Math

Triangle ABC ~ Triangle ADE AD=5; DB=3.5; BC=5.1; AE=6; EC=x What is the length of AB? What is the length of DE? Write an expression that represents AC? What is the length of EC? What is the length of AC?

71. ## math

How many ways are there to roll out a 3 question True or False?

72. ## math

A jet flew at an average speed of 480 mph from Point X to Point Y. Because of head winds, the jet averaged only 440 mph on the return trip, and the return trip took 30 minutes longer. How many hours was the flight from Point Y to Point X? how far is it

73. ## math

The Statue of Liberty is about 151 feet tall. If the angle of elevation from a tree in Liberty State Park to the statue's top is 1.5 degrees, how far is the tree from the statue? cot 1.5 DEGREES= h/ 151 151 cot 1.5= h h= ________

74. ## math

The Statue of Liberty is about 151 feet tall. If the angle of elevation from a tree in Liberty State Park to the statue's top is 1.5 degrees, how far is the tree from the statue?

75. ## math

the angle of elevation from a ship to a 135-foot-tall lighthouse is 2 degrees. How far is the ship from the lighthouse?

76. ## math

In the equation 1/5 (x-50)=25 X represents the number of pages of a book.

77. ## physics

A 1543.1 kg car is traveling at 25.1 m/s when the driver takes his foot off the gas pedal. It takes 5.7 s for the car to slow down to 20 m/s. How large is the net force slowing the car? Answer in units of N

78. ## Math

What is the rule for this function? input 2 output 5 ,input 4 output 13, Input 6 output 21, Input 8 output 29, Input 10 output 37 Please help now thanks

79. ## science

How does substrate concentration affect enzyme activity. If you do not know the answer, please reply this question letting me know.

80. ## MATH

FIND THE UNIT RATE ROUND TO THE NEAREST HUNDREDTH ?TRAVEL 250 MIN IN 5 HOUR

81. ## Science Help

1.) A rail gun uses electromagnetic energy to accelerate objects quickly over a short distance. In an experiment, a 2.00 kg projectile remains on the rails of the gun for only 2.10x10-2 s, but in that time it goes from rest to a velocity of 4.00×103 m/s.

82. ## Physics

A horizontal force of 150 N is used to push a 42.0-kg packing crate a distance of 6.60 m on a rough horizontal surface. If the crate moves at constant speed, find each of the following.

83. ## trig

In 60 ft. Run sith a 21 degree slope what is rise(ft)

84. ## Automotive Engine Types

A 2.2 liter engine would have a displacement of approximately

85. ## Calculus

x(x^2-1)^3 using change of variable

86. ## Calculus

a meteorite slams into the earths crust and penetrates d=(1200t-36000t^2)m in t seconds after impact. What is the maximum depth of penetration?

87. ## math

how do I find the product for 15x3 1/5 using distributive property,help please

88. ## math

Anna uses 5/6 tank of gas each week driving to work . How many tanks of gas does Anna use in 1 2/3 months.

89. ## Algebra

Graph the rational function x/(x-6) To graph the function, draw the horizontal and vertical asymptotes (if any) and plot at least two points on each piece of the graph.

90. ## Statistics

The following is a list of 13 measurements: -38,-89,-47,-43,-70,59,92,97,23,-11,-62,-22,-5. Suppose that these measurements are respectively labeled X1,X2,...,X13 Find the sum when i=1 Xi/30.

91. ## Algebra

The original price of a pair of jeans is \$80. A store marks a pair of jeans as discounted at 40% off. It then has a store wide clearance of 20% off all marked prices. If you come during the sale and use a "40% off" coupon to buy the jeans will they be

92. ## Algebra

Negative three times the sum of a number and one is less than or equal to the difference of 5 times the number and 9.Graph the solutions.

93. ## Algebra

Gail and her brother Henry had a combined age of 47. If Gail was twice as old as Henry ten years ago, how old is Gail today?

94. ## physics

During the second stage of a rocket launch the rockets upward velocity increases from 980 m/s to 9000 m/s with an average acceleration of 33 m/s*. How long did the acceleration last??

95. ## math

You deposit \$6,700 in a money-market account that pays an annual interest rate of 3.3%. The interest is compounded quarterly. How much money will you have after 4 years?

96. ## chemistry

what mass of aluminum hydroxide needs to be consumed to neutralize 1.25L of stomach acid (HCl). Stomach acid has a pH of 2.2

97. ## chemisty

What volume of 0.250 M calcium chloride needs to be added to sodium phosphate to produce 35.0g of calcium phosphate?

98. ## Pre-Cal

1.y=f(x) 2.x=f(y) Is the second equation an inverse of the first equation or is it no a function?

99. ## CHEMISTRY: URGENT

1) the element Q has the electronic configuration 1S2, 2S2, 2p6, 3s2, 3p6, 4s2 3d10, 4p1. Write the atomic #. Q exist as 69Q and 71Q. What is the significance of the 2 #'s. What does it mean. B) find the atomic mass if 69Q is 60% anf 71Q is 40%