1. Math

A university is trying to determine what price to charge for tickets to football games. At a price of ​\$30 per​ ticket, attendance averages 40,000 people per game. Every decrease of ​\$5 adds 10,000 people to the average number. Every person at the

2. maths

ABC company currently has 1/4 fewer computers than it has employees,if they currently have 80 employees and they want to hire 5% more.how many computers will they need to buy to ensure that each employees has one?

3. maths

Betty paint twice as fast as Dan. when working together Betty and Dan can paint 2400 square feet in 4 hours,another employee,sue joined their painting team.working together Dan,Betty and Sue can paint 36000 square feet in 3 hours. if sue works alone,how

4. maths

James is able to sell 15 of product A and 16 of product B and a week , Sally is able to sell 25 of product A and of 10 product B a week,and Andre is able to sell 18 of product A and 13 of product B a week.if product A sells for \$35.75 each and product B

5. Science

1.) Why is it important to have a quiet study space? It is easier to concentrate in a quiet space, and concentration is needed to learn. * It is easier to leave all your study material in a quiet study space so you can find it. A quiet study space prevents

6. Chemistry

Complete and balance the following equation. If no reaction occurs, write noreaction . NaOH(aq)+FeBr3(aq)→

7. Math

A trash company is designing an​ open-top, rectangular container that will have a volume of 135 ft^3.The cost of making the bottom of the container is​ \$5 per square​ foot, and the cost of the sides is​ \$4 per square foot. Find the dimensions of

8. physics

The engine of a locomotive exerts a constant force of 6.5 105 N to accelerate a train to 90 km/h. Determine the time taken for the train of mass 1.8 107 kg to reach this speed from rest.

9. Chemistry

A hot lump of 25.6 g of aluminum at an initial temperature of 57.4 °C is placed in 50.0 mL of H2O initially at 25.0 °C and allowed to reach thermal equilibrium. What is the final temperature of the aluminum and water given that the specific heat of

10. Practice worksheet

A metal bar weighs 8.15 ounces.93% of the bar is silver.how much ounces of silver are in the bar

11. maths

Three bags of wheat,two bags of corn, and one bag of oats weigh the same as one bag of wheat,one bag of corn and five bags of oats,if two bags of corn and one bag of oats weights 25 pounds and one bags of corn weights 10 pounds,How much does one bag of

12. Social Sudies

if you lived in a coastal city which natural resources might provide many job. a=farmland b=timber c=fishing d=coal plzzzzz help

13. precalculus

A weight on the end of a coiled spring is pulled 10cm below its resting position. The weight is released at time =t0 seconds and moves upward, oscillating in simple harmonic motion. It completes one cycle in 3 seconds. (Note that upward is the positive

14. math

A rectangular piece of sheet metal is 4 ft longer than it is wide. (See the illustration.) The area of the piece of sheet metal is 96 ft2. Find its length and width

15. Math

An apple farm yields an average of 39 bushels of apples per tree when 21 trees are planted on an acre of ground. Each time 1 more tree is planted per​ acre, the yield decreases by 1 bushel​ (bu) per tree as a result of crowding. How many trees should

16. Chemistry

Al3+ and HPO42

17. Chemistry

What are the names of the reactants in this equation? Mg (s) + 2HCl (aq) --> MgCl2 (aq) +H2 (g)

18. Chemistry

In a constant-pressure calorimeter, 65.0 mL of 0.320 M Ba(OH)2 was added to 65.0 mL of 0.640 M HCl. The reaction caused the temperature of the solution to rise from 21.98 °C to 26.34 °C. If the solution has the same density and specific heat as water

19. bio 230

how would the effects of a collagen vascular disease that affected only the collagen in reticular fibers

20. Math

What is the standard form of five and three hundred fifty-two thousandths? 1: 5.0032 2: 5,352,000 3: 5.352 4: 5.30052000 Is it two?

22. English

Need these answered soon please! 10.   The author of “My Brother’s Keeper” emphasizes Jamie’s conflict by describing the car accident in detail.*** detailing Jamie’s physical appearance and good grades. flashing back to earlier events with his

23. maths

Xyz company purchased a new machine in march at \$ 50000.00 and is using the profit to pay it off.profit in march were \$7.876 . if the profit increase 2% from the previous month,in what month will the machine be completely paid off?

24. Maths

A rectangle has sides of length 6.1cm and 8.1 cm correct to 1 decimal place. Calculate the upper bound for the area of the rectangle as accurately as possible.

25. Stats

HELP!! I have no idea to get this answer :( a doctor wants to estimate the HDL cholesterol of all 20-29 year old females. how many subjects are needed to estimate the HDL cholesterol within 4 points with 99% confidence assuming the standard deviation is

26. Physics

Commercial airplanes are sometimes towed out of the passenger loading area by a tractor. The 1800 kg tractor exerts a force of 1.75 104 N backward on the pavement, and the system experiences forces resisting motion that total 2400 N. (a) If the

27. Math

Dividing complex numbers 7-13i/2i

28. maths

A model rocket is launched with an initial velocity of 250 ft per second. The height h, in feet, of the rocket t seconds after the launch is given by h = −16t2 + 250t. How many seconds after the launch will the rocket be 500 ft above the ground? Round to

29. maths

Jason is considering to purchase a new machine to make plastic silverware.the machine produces 1000 pieces of silverware in two hours. one box contains 50 pieces silverware and sells for \$3.00.if the machine cost \$9000 and runs for 24 hours a day.How many

30. chemistry

What mass of iodine would react with 48 grams of magnesium to make magnesium iodide?

31. Set Theory

Let the Universal Set, S, have 136 elements. A and B are subsets of S. Set A contains 34 elements and Set B contains 98 elements. If Sets A and B have 22 elements in common, how many elements are in A but not in B?

32. Physics

A baseball player stealing second base runs at 7.2 m/s . If he slides the last 3.8 m , slowing to a stop at the base, what's the coefficient of kinetic friction between player and ground?

33. Chemistry

I have a question about solubility rules and net ionic equations so for example : CuSO4+Ba(NO3)2----->BaSO4+Cu(NO3)2 Okay so I know BaSO4 is insoluble while Cu(NO3)is solulable, that means BaSO4 will have a precipitate while Cu(NO3) doesn't. So does that

34. physics

two concentric conducting spherical shells have radii R1=0.145m and R2=0.207m the inner spheres with negligible speed, Assuming that the region between the spheres is a vacuum compate the speed with which the electron stricks the outer sphere."

35. Cards

As shown above, a classic deck of cards is made up of 52 cards, 26 are black, 26 are red. Each color is split into two suits of 13 cards each (clubs and spades are black and hearts and diamonds are red). Each suit is split into 13 individual cards (Ace,

36. physics

You are working at a garden centre for the summer. You lift a bag of fertilizer with a force of 143 N, and it moves upward with an acceleration of 0.762 m/s2. a: how much does the fertilizer back weigh?

37. physics

A 540 kg satellite orbits at a distance from the Earth's center of about 5.4 Earth radii. What gravitational force does the Earth exert on the satellite

38. physics

Two spacecraft in outer space attract each other with a force of 4 N. What would the attractive force be if they were one-eighth as far apart?

39. algebra

Amy has set aside \$150 a month for her cell phone bill. Thecost for a monthly cell phone plan is a \$65 access fee plus \$20 per gigabyte of data used. Which expression represents the amount of money Amy has left from her monthly budget after she pays her

40. m\

The path of water from a hose on a fire tugboat can be approximated by the equation y = −0.0055x2 + 1.2x + 10, where y is the height, in feet, of the water above the ocean when the water is x feet from the tugboat. When the water from the hose is 3 feet

41. Statistics and

In a survey of 144 pet owners, 31 said they own a dog, and 91 said they own a cat. 14 said they own both a dog and a cat. How many owned neither a cat nor a dog?

42. Probability

Suppose a math class contains 46 students, 22 females (six of whom speak French) and 24 males (three of whom speak French). Compute the probability that a randomly selected student speaks French, given that the student is male.

43. math

From a strip of tin 14 inches a trapezoidal gutter is to be made by bending up the sides at an angle of 45°. Find the width of the base for greatest carrying capacity.

44. Physics

An arrow is shot by stretching a bow through a distance of 0.9m by applying a force of 150N, the mass of the arrow is 1.7kg. Using the conservation of energy, calculate the speed with which the arrow leaves the bow.

45. Physics

Hospital patient. A 90.0 kg patient is suspended in a raised hospital bed as shown in the figure. The wire is attached to a brace on the patient's neck and pulls parallel to the bed, and the coefficients of kinetic and static friction between the patient

46. Math

A loan of \$37,000 is made at 8.75% interest, compounded annually. After how many years will the amount due reach \$93,000 or more?

47. Stats

On Tuesday September 27, 2016 the high temperature increased to 36.7 degrees Celsius (98 degrees Fahrenheit). What is the probability that we observe a temperature of 36.7 degrees Celsius or higher given that the average temperature is 27 degrees Celsius

48. Maths

4root(132/143)-sqare

49. Chemistry

Why does the element calcium react with water differently than magnesium, potassium and sodium, in a way that calcium looks opaque and cloudy in water and when phenlotphtahein is added it looks bright pink but how come the other elements don't look like

50. Loan

In a loan database, there are 60 loans to clients with 18 years of business experience. Also, there are 23 loans made to clients with a High School education. In the database there are 68 loans to clients with 18 years of experience or who have a High

51. physics

A coordinate system (in meters) is constructed on the surface of a pool table, and three objects are placed on the table as follows: a m1 = 1.9-kg object at the origin of the coordinate system, a m2 = 3.4-kg object at (0, 2.0), and a m3 = 4.6-kg object at

52. physics

What changed Newton's original work on the movement of the Moon around the Earth into the law of universal gravitation? 1) his conclusion that the same laws applied to all objects, no matter how small 2) his connection of gravitation to his first law 3)

53. Math

Dividing complex numbers 4-2i/3+1

54. physics

What is the acceleration due to gravity at a distance of one Earth radius above the Earth's surface

55. physical

how much work is done on a pumpkin wit a (force)of 16n when u lift it 15 meter?

56. simple interest and compound interest

rajesh a money lender lends in the following manner. for the first year he charges 2% p.a, for the second year he charges 4% p.a, for the third year he charges 6% p.a and so on. if he lends a sum in this way at simple interest find the least integral

57. physics

What is the acceleration due to gravity at a distance of one Earth radius above the Earth's surface

58. Biology

A pore whose opening is covered by a diaphragm is clearly visible. What role do the pores serve? What would be the role of the diaphragm?

59. physics

A 300lb car is moving at constant velocity onn a level concrete road. How much force is needed to keep it moving if the u=0.04

60. math

If 5 men can paint 75 houses in 20 days, How long can 15 men take to paint 410 houses

61. physics

A stunt car driver drives off an h = 7.9 m-high cliff into a lake with a horizontal speed of 17 m/s. The car needs to clear an 17.1 m-long ledge that is 5.0 m below the edge of the cliff, as shown in the figure below. The car just misses the ledge on the

62. Maths

Ben helped his parents plant a row of fruit trees.the row is 50 meters long.the distance between trees is 5 meters.how many trees did they plant?

63. Mathematics Help

Giving a test to a group of students, the grades and genders are summarized below. A B C Total Male 3 15 11 29 Female 14 9 12 35 Total 17 24 23 64 If one student is chosen at random, find the probability that the student was female OR received a grade of

64. Physics

A 12 v battery has a capacity of giving 80 amperes of current for one hour. How long can the battery keep a 60W lamp on?

65. chemistry

Which one of the following complex ions has an optical isomer? a. [Zn(phen)2]2+ b. [Cu(CN)4]2– c. [Co(H2O)4en]2+ d. [Zn(NH3)2en]2+ e. [Ni(en)3]2+ how would i go about finding this answer? i don't need the answer give would prefer steps. thanks

66. programming

1. The attached bombs.zip file contains 19 bombs. These bombs have been numbered and every one needs to break only one. The assignment is as follows. For example, student 191464104 needs to break binaryBomNo.2.exe. You need to find out the 6-digit password

67. value

A Body Is In Equilibrium When Three Forces Act On It,two Of The Forces Are F1 Of Magnitude 8n Acting Dud East And F2 Which Is 5n Acting N60degree East.Find The Magnitude And Direction Of The Third Force.

68. physics

2 masses m1 and m2 are connected at ends of in-extensible string that passes over pulley find acceleration and tension in pulley.

69. Science

Two fixed particles of changes 1 micro coulomb and 3micro coulomb are 10cm apart. How far apart from each other should a third charge be placed so that no net electrostatic force acts on it.

70. biology

How is a cow protein different than a human protein? How is cow DNA physically different from human DNA? Remember all proteins are made up of amino acids

71. geometry

A circle has a center at (8, 2). The point (3, 7) is on the circle. What is the area of the circle to the nearest tenth of a square unit?

72. physics

Objects with masses m1 = 11.0 kg and m2 = 6.0 kg are connected by a light string that passes over a friction-less pulley as in the figure below. If, when the system starts from rest, m2 falls 1.00 m in 1.48 s, determine the coefficient of kinetic friction

73. english

Directions: Rewrite the following paragraph that features all simple sentences. Combine some of the sentences so that you will have compound and complex sentences. I kept my grandmother’s three-month-old boxer puppy for a full month. He was a constant

74. simple interest and compound interest

rajesh a money lender lends in the following manner. for the first year he charges 2% p.a, for the second year he charges 4% p.a, for the third year he charges 6% p.a and so on. if he lends a sum in this way at simple interest find the least integral

75. math

prove that tan(π/4+x/2)+tan(π/4-x/2)=2sec x

76. Help ASAP

A jar contains 5 red marbles, numbered 1 to 5, and 12 blue marbles numbered 1 to 12. a) A marble is chosen at random. If you're told the marble is red, what is the probability that it has the number 3 on it? b) The first marble is replaced, and another

77. Maths

In a two digit number the digit in the unit place is 6 less than twice the digit in the tenth place. When tha digits are reversed th number increases by 9. Find the number

78. math

Three girls shared a cake. A get 3/8 of the cake, B get 1/4 of the remainder. How much does C get?

79. Projectile Motion Help

I was wondering if you could help me solve this projectile motion problem. A projectile is launched with an initial speed of 14.5 m/s at an angle of 35° above the horizontal. The object lands at the same height from which it was launched. Air resistance

80. physics

What two facts did Newton need to be able to calculate the acceleration of the Moon? 1) the distance to the Moon and the diameter of the Moon. 2) the time it takes the Moon to make one revolution and the distance from the Earth to the sun. 3) the diameter

81. Physics

The density of copper is 9.8 kilograms per meter cube and the density of gold is 1.9 kilograms per meter cube. When two wires of these metals are held under the same tension, the wave speed in the gold is found to be half that in the copper wire. What is

82. Physics

if light is incidence at a depth of 246cm, 224cm of a coin in a tank, refractive angle is 30 degree find the incidence angle

83. algebra

The United States Department of Agriculture reported in Vegetables and Melons Outlook in 2007 that the average America consumes about 7.4 x 10^3 potato chips in a year. Since Idaho had about 1.5 x 10^6 people in 2007, how many potato chips would Idaho

84. College Algebra

Tammy can do a certain job in 6 hours. Kris can do the same job in 8 hours. If Tammy and Kris work together to complete the same job, how many hours will it take for them to complete it?

85. physics

Imagine a boat is being rowed upstream where v1 is the velocity of the boat and v2 is the velocity of the stream. What is the time required if the boat tends to cross the river along the shortest path?

86. Physics

Two waves, identical except for phase, are traveling in the same direction through the same medium. Each of the waves has amplitude A. The amplitude of the combined (net) wave is 1.14A. What is the absolute value for the smallest possible phase difference

87. Trig

If angle A is 45 degrees and angle B is 60 degrees. Find sin(A)cos(B), find cos(A)sin(B), find sin(A)sin(B), and find cos(A)cos(B) The choises for the first are: A. 1/2[sin(105)+sin(345)] B. 1/2[sin(105)-sin(345)] C. 1/2[sin(345)+cos(105)] D.

88. Math

The average daily high temperature for the month of September in Los Angeles is 27 degrees Celsius (81 degrees Fahrenheit) with a standard deviation of 2.78 degrees Celsius. How hot are the hottest 10.03% days during September in Los Angeles? Provide your

89. MATH

The role of GABA or gamma-aminobutyric acid is involved in down-regulating the activity of neurons in the human brain and is linked to mental health disorders as: anxiety, depression, autism, schizophrenia, bipolarity, and epilepsy among many others. You

90. Marbles

A bag contains 10 green marbles, 9 white marbles, 7 red marbles. If one marble is drawn from the bag then replaced, what is the probability of drawing a green marble then a red marble?

91. Math

If you work 7 days a week 8 hours a day and gets paid \$10.50 an hour how much will your weekly salary be?

92. maths

in a right triangle one acute anlge is 54. find the other acute angle?

93. Math

Pamela is 12 years older than her brother. Last year, she was thrice as old as her brother. How old is Pamela now?

94. Chemistry

Why alkali metals known as alkali metals?

95. Math

Jai savings was 2/5 more than Julia after Jai had given Rs.500 to Julia he had 1/5 of Julia money The total savings of Jai is

96. math

The excess of the sum of the half and the third parts over the difference of the fourth and the fifth parts of a number is 188. What is the value of a number?

97. physics

a 1240 kg automobile stops in a distance of 41m. if initial velocity was 22.5m/s, what force did the road exert on the car to stop it? Answer pls... Thank You

98. physical chemistry

Calculate molarity of air having malar mass 28.8cotaining N2 and O2 only at 273kelvin and 1atm pressure

99. Geometry

How do we use geometry in our everyday lives?

100. Physics

Find the magnitude of the force needed to accelerate a 150 g mass with a = -0.250 m/s2 i^+0.675 m/s2 j^. Find the direction of this force? Need to find F and theta.

101. maths

How many even numbers greater than 40000 that can be formed from the following digits 1,0,2,4,6,7,8

102. Physics

Two fire alarms are placed in a building, one 2.3 m north of the other. A person sitting at a desk which is 67.2 m east and 8.4 m north of the point mid-way between the alarms does not hear them when they sound. What is the lowest frequency that the alarms

103. physics

A stone is tied to a string (length = 0.945 m) and whirled in a circle at the same constant speed in two different ways. First, the circle is horizontal and the string is nearly parallel to the ground. Next, the circle is vertical. In the vertical case the

104. Math

If you have a bottle of cologne. How much would each spray cost you?

105. Science

similarities between naturopathic medicines to Aboriginal healing medicine.

106. physics

How can the LIGO gravity wave detector achieve a measurement accurate to 1/1000 of a proton's diameter

107. Haematology

Define terms: - clinical conditions - pathological conditions - physiological conditions These terms have me confused..

108. math

Check Your Understanding 1. Use the function y = 100(0.2)x to find the missing value in the table below. x y -2 2,500 -1 500 1 20 4 ? i don't understand how you find it

109. chemistry

Say some exples for true solutions.