1. Math

The average weight of 3 boys is 53 pounds. Not one of these boys weighs less than 51 pounds. What is the maximum possible weight in pounds, of any one boy?

2. Math Personal Finance

Assume a 30-month CD purchased for pays simple interest at an annual rate of 5.5%. How much total interest does it earn? What is the balance at maturity?

3. physics

The human body can survive an acceleration trauma incident (sudden stop) if the magnitude of the acceleration is less than 250 m/s2. If you are in an automobile accident with an initial speed of 136 km/h (85 mi/h) and you are stopped by an airbag that

4. physics

Three identical point charges A, B, and C are located in the shape of an equilateral triangle with sides of length 15 cm. What is the net force on B if each charge has a magnitude of −5.0 × 10−3 C?

5. physics

A geosynchronous Earth satellite is one that has an orbital period equal to the rotational period of the Earth. Such orbits are useful for communication and weather observation because the satellite remains above the same point on Earth, provided it orbits

6. Math 11

From a weather balloon high in the air, the angle of depression of a ground marker is 27.8 degrees. If the balloon rises 345 m straight up the angle of depression from this higher point is 46.2 degrees. How high above the ground is the balloon?

7. Math Personal Finance

A friend tells you that her savings account doubled in 9 years. Use the Rule of 72 to estimate what the APR of her account was.

8. chemistry

Urea (CO(NH2)2) can react with water to form CONH2NH+ 3 and a hydroxide ion. Which statement is true for this reaction?

9. physical sciences

Which substance has the weakest intermolecular force between ethanol,nail polish remover and methylated spirits?

10. chemisrty

Rank following acids frommost to least acidic: hydrocyanic acid (HCN) Ka = 6.2 × 10−10 hypoiodous acid (HOI) Ka = 2 × 10−11 chlorous acid (HClO2) Ka = 1.2 × 10−2 acetic acid (CH3COOH) Ka = 1.8 × 10−5 1. HOI > HClO2 > CH3COOH > HCN 2. CH3COOH >

11. physics

Gradually increase the angle of the incline, but keep the angle low enough that the block does not slide. Select all the phrases below that would make the following statement true: For this situation, as the angle is increased the maximum possible value of

12. Chemistry

I posted this last night, A 0.500L vessel initially contains 0.0125 mol of H2S2 . Find the equilibrium concentrations of H2 and S2. Kc = 1.67 x 10^-7 2 H2S 2 H2 + S2 I have come up with this equation so far, but I am lost now because I don’t even know if

13. Math Personal Finance

Assume a 30-month CD purchased for \$4000 pays simple interest at an annual rate of 5.5%. How much total interest does it earn? What is the balance at maturity?

14. Physics 20

1. How much heat energy is required to change 500 grams of water at 100 degrees Celsius to steam at 100 degrees Celsius? 2. How much energy is lost if 7kg of water is cooled from 46 degrees Celsius to 2 degrees Celsius? 3. How much energy is gained when a

15. Physics

Futurists project large space stations which would rotate so as to use centripetal acceleration to simulate gravity. The outer wall of the rotating space station would become a floor for the astronauts, and centripetal acceleration supplied by the floor

16. Personal Finance

Suppose you put in a savings account at an APR of 6% compounded monthly. Fill in the table below rounding your answers to the nearest cent. (Calculate the interest and compound it by hand each month rather than using the compound interest formula.) Month

17. Math Personal Finance

A friend tells you that her savings account doubled in years. Use the Rule of 72 to estimate what the APR of her account was. APR=____%

18. physics

The two blocks in the sketch are connected by a light cord over a frictionless pulley and are initially held in place. The block m1 has a mass of 2,00 kg and m2 has a mass of 3,00 kg. The inclined plane is frictionless and the coefficient of kinetic

19. chemisrty

The pH of a solution changes from 5.5 to 3.5. This indicates that the [OH−] of the solution has 1. increased by a factor of 100. 2. increased by a factor of 2. 3. decreased by a factor of 2. 4. decreased by 2 M. 5. decreased by a factor of 100. 6.

20. Physics

Please Help! I am having difficulties grasping these concepts. Explain please! 1. How much heat energy is required to change 500 grams of water at 100 degrees Celsius to steam at 100 degrees Celsius? 2. How much energy is lost if 7kg of water is cooled

21. physics

Two satellites are orbiting the Earth in stable circular orbits. Satellite A has a mass m and is located at a distance 2r from the center of the Earth. Satellite B has a mass 2m and is located at a distance r from the center of the Earth. Which one of the

22. chemistry

If the pH of an aqueous solution is 5, what is the OH− concentration?

23. math

A polyhedron has 6 faces and 4 vertices. Use Euler's formula to calculate the number of edges.

24. Science - chemistry

The SO2 present in air is mainly responsible for the phenomenon of acid rain. The concentration of SO2 can be determined by titration against a permanganate solution of known concentration as follows: SO2 + MnO4^-1 -> SO4^-2 + Mn2+ (unbalanced) Balance the

25. math

At Dora's donut shop, dora makes 15 different varieties of donuts. Seven of these varieties are filled with jelly or cream. Officer sweetooth was sent to dora's shop to choose a dozen donuts, all different, with six filled and six unfilled. How many

26. personal finance

If Bridgette marrow is a sophomore at state college ad is running out of money. wanting to continue her education, Bridget is considering a student loan. Explain her options. How can she best minimize her borrowing costs and maximize her flexibility?

27. Math

Find the number of units that produces a maximum revenue. The revenue R is measured in dollars and x is the number of units produced. R = 80x – 0.0001x^2

28. Physics

A 1 kg mass is hung at the 0 mark of a meter stick and a 3 kg mass is hung at the 100 cm mark of the same meter stick. If the mass of the meter stick is 0.2 kg, at which of the following points of the meter stick could you balance the system on one finger?

29. math

The daily production costs P (in dollars) for a manufacturer of sound systems is given by the quadratic function. P(x)= -0.003x^2+150x-375,000 Where x is the number of units produced. What production level will yield a maximum profit?

30. Math Personal Finance

Assume an investment of \$7000 earns an APR (Annual Percentage Rate) of 6% compounded monthly for 18 months. The money in your account after 18 months will be \$______.

31. Math

You have a wireless phone plan that costs \$25 per month. You must also pay \$.10 per minute for each minute over 500 min. you phone bill was more than \$30 last month. Write an inequality to represent the number of minutes m you spent on the phone last

32. Math 11

From a window in a building 20 m above ground the angle of depression of the top of a statue across the street is 30 degrees, and the angle of depression of the base of the statue is 34. How tall is the statue?

33. physics

a homeowner wishes to drain her swimming pool by siphoning the water, whose depth is h, into a nearby gully a distance H below it,where H is much larger than h.she uses pipe of cross-sectional area a, and the pool has surface area A.how long does it take

34. Math Personal Finance

Assume an 18-month CD purchased for \$7000 pays an APR of 5% compounded monthly. What is the APY? APY=____%

35. physics

You are traveling in a convertible with the top down. The car is moving at a constant velocity of 16.6 m/s, due east along flat ground. You throw a tomato straight upward at a speed of 9.85 m/s. How far has the car moved when you get a chance to catch the

36. Math

I'm an on-going 8th grader, and I'm taking a class for Algebra 2. What should I expect that is different from Algebra 1? P.S. I've taken Geometry online.

37. Calculus

The rate of change in the volume of a tank is known to be dV/dt=0.6t*cos(0.08t^2 -1), where V(t) is in gallons per minute and 0

38. Chemistry

23. In a chemical reaction, dynamic equilibrium occurs when the rate of the forward reaction becomes precisely equal to the rate of the reverse reaction. All of the following statements are true EXCEPT A. A dynamic equilibrium occurs when the reaction is

39. Physics

A train on a mountain railway is carrying 200 people of average mass 70kg up a slope at an angle of 30° to the horizontal and at a speed of 6.0 m s–1. The train itself has a mass of 80 000 kg. The percentage of the power from the engine which is used to

40. Math

The batteries from a certain manufacturer have a mean lifetime of 890 hours, with a standard deviation of 90 hours. Assuming that the lifetimes are normally distributed, complete the following statements.

41. physics

A body of mass 'M' starts sliding down on the inclined plane where the critical angle is 30 the coefficient of kinetic friction will be ?answer is square root 3 but how?i am not getting please help.

42. statistics

An investigator wants to estimate caffeine consumption in high school students. How many students would be required to estimate the proportion of students who consume coffee? Suppose we want the estimate to be within 5% of the true proportion with 95%

43. Chemistry

what volume (mL) of 0.0962M NaOH is required to neutralize 10.0mL of 0.128M H2SO4? I got 26.6mL

44. chemistry

calculate the mass of Cuso4.5H2O required to prepare 500 cm3 of a 0.400 m/dm-3 solution

45. Chemistry

27. Excess exposure to nuclear radiation can cause harm. All of the following statements about radiation are true EXCEPT A. Radiation can damage living tissue because of the high energy associated with the radiation. B. Radiation can damage biological

46. everest

What will be the total deduction for social security and Medicare taxes on Juanita's next weekly paycheck of \$720 if she has already earned \$10,800 this year? Social security tax is 6.2% of wages up to \$106,800. Medicare tax is 1.45% of all wages.

47. Maths, Divine International Public School

If 15Cot=8, find (1+SinA)(1-SinA)/(1+CosA)(1-CosA)

48. physics

A pendulum is suspended inside a car vertically suddenly the car is given a horizontal acceleration 'a'.The maximm angle through which the pendulum deflects is ?answer is 2tan inverse 'a'divided by g(acceleration due to gravity please solve this i have

49. Lea408

can someone please tell me if I am right Like optical scanners, capacitance fingerprint scanners generate an image of the ridges and valleys that make up a fingerprint. But instead of sensing the print using light, the capacitors use electrical current.

50. Physics

A horizontal spring with spring constant 110N/m is compressed 16cm and used to launch a 2.8kg box across a frictionless, horizontal surface. After the box travels some distance, the surface becomes rough. The coefficient of kinetic friction of the box on

51. Physics

A 4.5kg box slides down a 4.1-m -high frictionless hill, starting from rest, across a 1.7-m -wide horizontal surface, then hits a horizontal spring with spring constant 490N/m . The other end of the spring is anchored against a wall. The ground under the

52. Physics

Astrology, that unlikely and vague pseudoscience, makes much of the position of the planets at the moment of one’s birth. The only known force a planet exerts on objects on Earth is gravitational. (a) Calculate the gravitational force exerted on a 4.20

53. Math Personal Finance

What is the present value of an investment that will be worth \$2000 at the end of five years? Assume an APR (Annual Percentage Rate) of 6% compounded monthly. The present value is \$_____ .

54. Calculus

A rock is dropped from the top of a 400-foot-tall building. Its distance s (in feet) from the top of the building after t seconds is s(t) = 16t^2. How many seconds will it take the rock to hit the ground?

What will be the total deduction for social security and Medicare taxes on Juanita's next biweekly paycheck of \$2,000 if she has already earned \$6,000 this year? Social security tax is 6.2% of wages up to \$106,800. Medicare tax is 1.45% of all wages.

56. Civics

"Blake DuBois is a decorated veteran and Purple Heart recipent. In his six years as a state senator, he has passed legislation to cut down on government waist. All the while, he's the family values candidate and has been tough on crime." Which Is the most

57. physics

Energy & Momentum Calculations Assessment Answer the following questions. A 1.0 kg puck sliding at 15 m/s along some horizontal frictionless ice strikes and compresses a horizontal spring attached to one end of the ice rink. If the spring has a constant of

58. Math Personal Finance

Assume we invest \$2000 for one year in a savings account that pays an APR (Annual Percentage Rate) of 10% compounded quarterly. Calculate the interest and compound it by hand each quarter rather than using the compound interest formula. The total interest

59. Math statistics

How large a sample should be taken if the population mean is to be estimated with 95% confidence to within \$69? The population has a standard deviation of \$892. (Round you answer up to the nearest whole number.) You may need to use the appropriate table in

60. MATH

Find two quadratic functions whose graph have given x-intercepts. Find one function whose graph opens upward and another whose graph opens downward. (-4,0) (0,0)

61. Physics

A model airplane is flying in a horizontal circle with a constant speed. The initial radius of the circle is R. The boy holding the cord to which the airplane is attached, then decides to increase the length of the cord so that the radius of the circle

62. Pre algebra

25ft piece wire cut into 2 pieces one piece is 19ft shorter than the other piece how long was each piece

63. science

calculate the mass of Cuso4.5H2O required to prepare 500 cm3 of a 0.400 m/dm-3 solution

64. Physics

A ball is sitting in a child's wagon and a child is holding the wagon's handle. The ball then rolls to the back of the wagon without anyone touching the ball directly. Which of the following statements according to Newton's first law of motion could

65. Math Personal Finance

Assume an investment of \$100 earns an APR (Annual Percentage Rate) of 5% compounded annually. The balance after 190 years will be \$______.

66. Math Personal Finance

What is the present value of an investment that will be worth \$2000 at the end of five years? Assume an APR of 6% compounded monthly. Present Value= \$____

67. Engg Mechanics

Blocks A and B of weight 200N and 100N respectively, rest on a 30 inclined plane and are attached to the post which is held perpendicular to the plane by force P, parallel to the plane, Assume that all surfaces are smooth and that the cords are parallel to

68. English

In the book Dragonwings, after saving Black Dog's life in the alley near the opium den, why does Windrider tell Moon Shadow to remember that Black Dog was once a good man?

69. Physics

. A rock is thrown up into the air with an initial velocity of 15m/s up. What is the rock's velocity after 0.40 seconds?

70. math

Assume that Mary Boyle had a homeowner’s insurance policy with \$ 150,000 of coverage on the dwelling. Would a 90 percent co- insurance clause be better than an 80 percent clause in such a policy?

71. MATH

The perimeter of a rectangle is 540ft. Let x represent the width of the rectangle. Write a quadratic function for the area of rectangle in terms of its width. Find the vertex of the graph of the quadratic function and interpret its meaning in the context

72. Math

Find two quadratic functions whose graph have the given x-intercepts. Find one function whose graph opens upward and another whose graph open downdward. (-5/2,0),(-2,0)

73. electronics

approximate I from a graph of current/time for a discharging capacitor. no idea on this, obviously you cant see the graph, but you don't need to, id just like to know how to approximate this from a graph.

74. physics

A block of mass m = 0.605 kg is fastened to an unstrained horizontal spring whose spring constant is k = 67.5 N/m. The block is given a displacement of +0.120 m, where the + sign indicates that the displacement is along the +x axis, and then released from

75. Physics

A model airplane is flying in a horizontal circle with a constant speed. The initial radius of the circle is R. The boy holding the cord to which the airplane is attached, then decides to increase the length of the cord so that the radius of the circle

76. math

Max is 5 years younger than Michael . 4 years ago the sum of their ages was 25. How old are they ?

77. physics

The drawing shows a steel ball rolling along a flat surface at constant velocity from point A to point B. A magnet exerts an attractive force on the ball only for the short time that passes as the ball rolls past point B. Which one of the following

78. physics

prove that for finite length current element ?H = I/2πr(sinα2 - sinα1)aφ

79. math

A cylinder is 12cm tall and has a diameter of 3 cm. What is the surface area?

80. physics

What is the pressure due to a man weighing 80 kg standing on his feet? given area of his feet is 160sq.cm take g=10m/s^2

81. Math, statistics

A trucking firm delivers appliances for a large retail operation. The packages (or crates) have a mean weight of 306 lb. and a variance of 2209. (Give your answers correct to four decimal places.) (a) If a truck can carry 4070 lb. and 25 appliances need to

82. Corporate Finance

Briarcrest Condiments is a spice-making firm. Recently, it developed a new process for producing spices. The process requires new machinery that would cost \$2,163,720. have a life of five years, and would produce the cash flows shown in the following

What effect does noise have in the transactional communication model? A. Noise creates distortion or blockage of a sender’s message. B. Noise replaces the receiver’s field of experience. C. Noise encrypts the sender’s message so only the addressed

84. Math

A pizza parlor has 3 diffrebt crusts and 3 diffrent cheeses and 7 diffrent toppings . How many combinations are on a pizza with 3 topings 1 crust and 1 cheese ? Help please I got 42 and then was told I was wrong

85. Math Personal Finance

Assume we invest \$2000 for one year in a savings account that pays an APR (Annual Percentage Rate) of 10% compounded quarterly. The compound interest formula is: Balance after t periods = Principal × (1 + r)t The final balance using the compound interest

86. algebra

Which of the following is the best estimate of the correlation coefficient for the data shown below? (1, 18), (2, 12), (3, 20), (4, 16), (5, 22), (6, 30), (7, 28), (8, 40), (9, 34), (10, 29), (11, 33), (12, 39), (13, 44), (14, 39), (15, 28)

87. English

This restaurant carries several kinds of street food such as odeng, tteokbokki, pretzels, beaver tails, waffles, and stick food. Odeng is fish cake. An odeng is 500 won. Both a long odeng and a flat odeng are 500 won. A tteokbokki is 500 won as well. A

88. History

When did the US pull out of the Vietnam War? Some sources say 1973 and then others say 1969..?

89. Psychology

Can you give a real world example of when you would use a chi-square test of independence and a chi-square goodness of fit?

90. Psychology

Describe the chi-square goodness-of-fit test.

describe scenarios that depicts the different ways to manage business commerce

92. physics

he drawing shows a steel ball rolling along a flat surface at constant velocity from point A to point B. A magnet exerts an attractive force on the ball only for the short time that passes as the ball rolls past point B. Which one of the following

93. physics

Joe pushes horizontally on a heavy box across a rough surface at constant speed. Which one of the following statements concerning this situation is false? If Joe stops pushing on the box, the box will stop sliding eventually. If Joe doubles his force on

94. Economics

What are welfare payments or consumer subsidies?

95. mathematics

4 quarters of x is 36. X is equal to A)9 B)50 C)144 D)40

96. computers

Th e No Interest Credit Company provides zero-interest loans to customers. Design an application that gets customer account data, including an account number, customer name, and balance due. Output the account number and name, then output the customer’s

97. Physics

an 80kg man jumps off a 60m cliff, halfway to the ground, his GPE is 27,072J. What is his KE at the same moment?

98. Math

If you multiply a number by 3 and then add 40, the result is the same as if you first add 17 and then multiply by 2. What is the result if you subtract 9 from the number and then multiply by 4? A. -60 B. -72 C. -84 D. -108 E. -124

99. Math

4x^3-6.68E-7x^2+1.67E-8x-1.04E-10 = 0

100. Finance

a. Calculate the values of the bonds if your required rates of return are as follows: Microsoft, 6 percent; Ford, 15 percent; Xerox, 10 percent; where MICROSOFT FORD XEROX Coupon interest rate 5.25% 7.13% 8.00% Years to maturity 30 25 16

101. Algebra/could show me how to work this problem

Tell what the output value is for the function machine for the given values. x^2+x^2+1 a)5 b)9 c)-7 d)1/2 e)t

102. math

David Salter has a personal automobile policy ( PAP) with coverage of \$ 25,000/\$ 50,000 for bodily injury liability, \$ 25,000 for property damage liability, \$ 5,000 for medical payments, and a \$ 500 deductible for collision insurance. How much will his

103. Physics

A system gains 473J of kinetic energy while losing 271J of potential energy. The thermal energy increases by 127J . Use an energy bar chart of this process to find the external work Wext.

104. Physics

Two masses are connected by a string over an ideal pulley as shown. The coefficient of kinetic friction between m1 and the table surface is 𝜇. Find an expression for their common speed after the blocks have moved a distance L. You can assume that you

105. English

1. This is a basketball uniform. The uniform is composed of a T-shirt and trunks. A basketball is on the trunks. He enjoys playing basketball. (Is this passage grammatical? Check it, please.) 2. There are many books on the bookshelf. 3. There are many

106. algebra

4x^3-6.68E-7x^2+1.67E-8x-1.04E-10 = 0

107. math help plz2!!!!

Find an equation of parabola that has the indicated vertex and whose graph passes through the given point. Vertex (-3,5) Point (-6,1)

108. science (Eating and allergies)

Well, can people be allergic to seeds? Recently I have been throwing up after eating. I realised everything causing my sickness was seeds, but I feel like no one else has this. I've eaten tomatoes ( I don't like them but it was in my mum's pasta sauce) and

109. English

1. The food is sweet. 2. The food is delicate. 3. The food has a roasted flavor. 4. The food has a delicate flavor(taste) 5. The food has a sweet taste(flavor). ----------- Are they all grammatical and do they have the same meaning? What is the difference

110. Chemistry

If 3.50 mol of A is mixed with 0.750 mol of B and the final pressure of the mixture is 3.25 atm, what are the partial pressures of A and B

111. Physics

A block takes 3 times as long to slide down an inclined plane that makes an angle of 30 degrees as it does to fall freely through the same vertical distance. Determine the coefficient of friction? I have no idea where to start on this. :(

112. chemistry

Calculate the pH of an aqueous solution of 11.5 mg of KOH dissolved in 56 mL of solution.

113. Math

0.145258-0.145258x = x

114. chemistry

Calculate the [H+] for a solution with [OH−] = −80 M. 1x10*-14/-80=-log(answer) How would I do this since I can not take the negative log of the previous anwser

115. chemistry

What is the pH of a water solution at 25◦C in which the hydroxide ion concentration is 9.8 × 10−6 mol/L?

116. engineeering

2C_656 H_1707 O_756 N_11 S+2823/2 (O_2+3.76N_(2 ) )→1312〖CO〗_2+1707H_2 O+10636.48 N_2+2〖SO〗_2

117. scienc

Mass of a bick

118. math

if sum of two numbers is c and their quotient is p/q then find number.

119. math

the no. of real roots of eqn (x-1)POWER 2 + (X-2) POWER 2 +(X-3) POWER 2= 0 IS:

120. Mathematics

The gragh of f(x)=ax squared q is sketched below. point a(2

121. Physics-can someone please check this

John is fired horizontally from a cannon with the speed of 24.5 m/s. In 3.0 seconds he strikes the earth down range. A net will be located on the ground to catch him. a) what is his initial position above the ground? b) What is the horizontal range to put

122. Math

If 7x + 4y = 18 and 3x + y = -3, what is the value of x + y? F. 9 G. 11 H. 12 J. 14 K. 15

123. law

Is there a current trend, claimed by law enforcement, that there are generally fewer use of force incidents by the police?

124. English

Even though the programmers are ------- about their new software, they are wary of publicly ------- its capabilities until further testing. (A) anxious . . commending (B) apprehensive . . substantiating (C) confident . . disclosing (D) positive . .

125. language art

The verb may precede the subject. True False

126. physics

acceleration = 2,84 m.s Tension = 5,18 N

127. Math

Marc works in a dairy processing plant. He is paid 16.50/h. He is paid time-and-a-half if he works more than 40 hours in a week. Marc worked 54 hours this week. What is his gross pay? 1.5 x 16.50 = 24.75 24.75 x 40 = 990 Answer (what I got): 24.75 + 990 =

128. algebra

the revenues per share of stock y (in dollars) for california pizza kitchen for the years 2000 through 2009 are given by the ordered pairs. (2000, 7.86) (2001, 9.02) (2002, 10.92) (2003, 12.66)(2004,14.64)

129. Physics

Can someone explain the magnitude and direction of the acceleration of a ball moving upward, downward,and at the highest point? a=g

130. physics

A box containing supplies is vertically lowered at constant speed by a rope from a hovering helicopter. Consider the following forces that arise in this situation: force 1: the force of the earth pulling on the box force 2: the tension force acting on the

131. Science - chemistry

The osmotic pressure of a solution of MgCl2 is 5.43 atm at 25 oC. How much of the salt is dissolved in 250.0 ml of water?

132. math

If x=a^2/3-a^-2/3 then find x^3 3x=?

133. Math helpppp!

Write the quadratic function in standard form and sketech its graph. Identify the vertex. h(x)=(x-6)^2+3

134. math

The least number of pens required to make complete sets of 20, 24, 30, are?

46,318.97

136. critical & ethical thinking

I AM WRITING A PROJECT FOR ETHICAL & CRITICAL THINKING ON MEDICAL BILLING & CODING.MY TOPIC IS ETHICAL ISSUES IN MEDICAL BILLING AND I NEED A THESIS STATEMENT

137. english HELP

Rewrite the following sentences to ensure that the pronouns are used appropriately and that they have antecedents. If the sentence is correct, type "correct". (Each question is worth one point) 1- It would be nice to go to the aquarium. 2- It said on the