# Questions Asked onJuly 12, 2013

1. ## Maths

Prove that max & min values of asinx+bcosx are =/- (a^2+b^2)^1/2

2. ## Physics

Which of the following is correct for the reflected ray if a light ray strikes a plane mirror at an angle of 50° from the normal? a. 40° from the surface of the mirror b. 40° from the normal c. 50° from the surface of the mirror d. 90° from the normal

3. ## maths

Prove that max & min values of asinx+bcosx are = +/- (a^2+b^2)^1/2

4. ## Calculus

The question is find the area of the reagion that is bounded by the curve y=arctan x, x=0, x=1, and the x-axis. So I've drawn the enclosed region. To find the area would I use the Disc/shell method? If so the formula that I came up with looks like this: If

5. ## Biology

Will you please check my answers? 1. Single-celled organisms that do not have a membrane-bound nucleus are called A. organelles. B. prokaryotes. C. Golgi bodies. D. eukaryotes. 2. In cells, a form of active transport is A. a sodium-potassium pump. B.

6. ## Calculus

Skeletal remains had lost 81% of the C-14 they originally contained. Determine the approximate age of the bones. (Assume the half life of carbon-14 is 5730 years. Round your answer to the nearest whole number.) yr

7. ## Calculus

Find the derivative of the function. f(x) = ex8 - 6

8. ## physics

an object weighs 10N on earth .what is the objects weight on a planet one tenth the earths mass and one half its radius?

9. ## Computers C++

1.) Look at the following array definition. int numbers[] = { 2, 4, 6, 8, 10 }; What will the following statement display? cout

10. ## Calculus

Four hundred students attended the dedication ceremony of a new building on a college campus. The president of the traditionally female college announced a new expansion program which included plans to make the college coeducational. The number of students

11. ## Calculus

Find the absolute extrema of the function on the interval [2, 9]. (Round your answers to the nearest hundredth.) g(x)=x/(ln(x)) Absolute minimum: at x = Absolute maximum: at x =

12. ## statistics

MBA604 Statistics Assignment 1 Part 1 1) (5 pts) An electronics company is about to launch a new product. If the serial number for each piece produced has the following format: LLNNN where L stands for any letter in the English alphabet and N is a number

13. ## Chemistry

Consider the decomposition of a metal oxide to its elements where m represents a generic metal. M2O(s)2M(s)+1/2O2(g) the delta G is 10.30 I need to find K and PressureO2 at 298K I know the equations but i keep getting the answer wrong could you please help

14. ## Calculus

Find the absolute extrema of the function. (Round your answer to three decimal places.) f(x) = xe-x2 on [0,2] Absolute maximum value: at x = Absolute minimum value: at x =

15. ## science

Which one of the following gases occupies the smallest volume at STP? A.4g helium B.14g nitrogen C.34g ammonia D.32g oxygen

16. ## Stats ()

Coal is carried from a mine in West Virginia to a power plant in Pittsburgh in hopper cars on a long train. The automatic hopper car loader is set to put 75 tons of coal into each car. The actual weights of coal loaded into each car are normally

17. ## Calculus

Find the derivative of the function. g(x) = ln(3x + 5)

18. ## stats college

Which of the following confidence intervals will be the widest? a. 90 percent b. 95 percent c. 80 percent d. 98 percent

19. ## Chemistry

Calculate the work done (in joules) by a chemical reaction if the volume increases from 3.3L to 3.5L against a constant external pressure of 3.7atm .

20. ## Calculus

Find the derivative of the function. f(x)=ln(sqrt(x)+6)

21. ## Calculus

Find the absolute extrema of the function. (Round your answer to three decimal places.) f(x) = xe^-x2 on [0,2] Absolute maximum value: at x = Absolute minimum value: at x =

22. ## General Chemistry

A 0.484 g sample of impure NH4Br is treated with 25.00 mL of 0.2050 M NaOH & heated to drive off the NH3. The unreacted NaOH in the reaction mixture after heating required 9.95 mL of 0.0525 M H2C2O4 to neutralize. How many grams of NH4Br were in the

23. ## college algebra

if the altitude and the base of a triangle are each increased by 4 inches the area of the triangle will be increased by 42 square inches. if the altitude is increased by 3 inches and the base is decreased by 2 inches the area will be increased by 5 square

24. ## calculus

two forces f1 and f2 acting on an object at a 90 degree angle will pull the object with a reluctant force, R, at an angle between f1 and f2. R= ã f1^2+f2^2 R=15 and f1=9 find f2

25. ## AP Calculus

[(3/x)-(4/y)]/[(4/x)-(3/y)]

26. ## AP Calculus

Show work to determine if the relation is even, odd, or neither. 1. 3x=|y| (|y|=abs. value of y) Simplify the following complex fractions. 2. [(3/x)-(4/y)]/[(4/x)-(3/y)] PLEASE HELP!

27. ## Vocabulary

Determine whether the definition below is denotative or connotative Gray: A cold, glommy day. A. connotative B. Denotative

28. ## AP Calc.

Simplify: [(x^-3)-x]/[(x^-2)-1]

29. ## AP Calc

Solve the following absolute value inequalities: |x+1|

30. ## PHYSICS

An arrangement of 3 blocks A ,B,C such that block A of mass 5 kg is over block B of 6 kg, with a friction between them of 0.8. both the blocks are connected to the 3rd block C of mass m by a string and frictionless pulley. Now to find at what value of m

31. ## Math

Determine the simple interest P=2500 R=3 7/8 T=9 months

57. ## physics

What is the kinetic energy of each electron in a beam of electrons if the beam produces a diffraction pattern of a crystal which is similar to that of a beam of 1.00 eV neutrons? Note: The electron mass is 9.11 × 10–31kg; and the neutron mass is 1.67 ×

58. ## college stats

I am having a lot of trouble with these questions can anyone help me please. 2. On September 2, 2004, a Dan Jones poll based on a random sample of 408 Salt Lake County residents reported that 26% of the respondents thought that Mayor Nancy Workman should

59. ## Computers C++

I really need help with this one... 1.) Look at the following declaration. enum Person { BILL, JOHN, CLAIRE, BOB }; Person p; Indicate which of the following statements or expressions is valid. A.) p = BOB; B.) p++; C.) BILL > BOB D.) p = 0; E.) int x =

60. ## college stats

help please!!! 1. The average number of bumped passengers per day on FliRite Airlines is 2.47 with a standard deviation of 1.75. For a random sample of 40 days, what is the chance the average number of bumped passengers in the sample is between 2 and 2.75?

61. ## Public policy

Evaluate how public policy decisions affect the receipt of revenues

62. ## Calculus

Find the derivative of the function. f(x) = ex8 - 6

63. ## Geometry

ABCD is a square. If one side of the square measures 2x – 5 inches and the other side measures x + 8 inches, find x.

64. ## Calculus

Find the derivative of the function. f(x) = text(ln)(9 x^2 - 3 x + 1)

65. ## Calculus

Find the derivative of the function. f(x) = ln((x6 - 7)6)

66. ## Calculus

Find the derivative of the function. f(x) = 6 (ln(x))^(5\/2)

67. ## Calculus

Find the derivative of the function. g(t) = t2 ln(e2t + 9)

68. ## Calculus

Find the derivative of the function. f(x) = e^x8 - 6

69. ## Physics

A tennis ball may leave the racket on a serve by a top player with a speed of 45.0 m/s. If the ball's mass is 0.063 kg, and it is in contact with the racket for 0.030 s, what is the average force (in newtons) on the ball?

70. ## Physics

A 170 kg astronaut (including space suit) acquires a speed of 2.75 m/s by pushing off with his legs from a 2400 kg space capsule. What is the average change in speed in meters/second of the space capsule?

71. ## Vocabulary

determine whether the definition below is denotative or connotative _____ definitions are subject to indivual interpretation A.denotative b. connotative i think its A

72. ## Chem

I was asked to list materials with different structures and exhibit different properties. I thought of water and salt, muriatic acid and laughing gas. Am I correct? I need two more. Please help.

73. ## Math

I am more than 300, but less than 400 . My digits add up to 12 . What number am I?

74. ## Thermodynamics

1. The total enthalpy of 15.000kg of steam at 2250.000kPa is 34191.510kJ. Determine the dryness of the steam. ANS = % 2. Determine the quantity of heat required, to raise 11.100kg of water at 80.000 degrees Celsius, to saturated steam at 2250.000kPa and

75. ## chemistry

calculate the volume of concetrated nitric acid (68%) that is neede to prepare stock solution 0.25M in 1000mL volumetric flask.(dnitric acid=1.513g/cm3)

76. ## maths

The maximum temperature on Thursday was 18 degree celsius.On Friday it increased by 0.5 degree celsius. It further increased by 2.5 degree celsius on Saturday. What was the minimum temperature on Saturday ?.

77. ## Fundamentals of Management

1 2 3 4 5 6 7 8 9 10 A major contribution that Taylor made to the study of management was to

78. ## life orientation

provide 5(or more) ways in which you critically discuss how cancer impact on the teenagers

79. ## maths

The maximum temperature on Thursday was 18 degree celsius.On Friday it increased by 0.5 degree celsius. It further increased by 2.5 degree celsius on Saturday. What was the minimum temperature on Saturday ?.

80. ## statistics

MBA604 Statistics Assignment 1 Part 1 1) (5 pts) An electronics company is about to launch a new product. If the serial number for each piece produced has the following format: LLNNN where L stands for any letter in the English alphabet and N is a number

81. ## physics

Tyler flies a spaceship at a constant velocity of 79% the speed of light or 0.790c. Use appropriate units: h for hour, m for meter. Note that β and γ have no units. (a) The value of β = [(v)/(c)] ("beta") is

82. ## Math

If a circle is drawn that contains all four vertices of a rectangle(24x18) and the area of the circle is k(3.14) square centimeters, what is k?

83. ## algebra1 HELP PLEASE Thanks you!!

The function gives the speed in feet per second (ft/s) of a free-falling object after it has fallen x feet (ignoring air resistance). FInd the speed of the object after it has fallen 25 feet. If necessary, round your answer to the nearest tenth.

84. ## Business Communications - English 101

Should the sentence containing the word three be 3 instead. The rules states to use numbers that follow an identifying noun. I don't quite understand if "these" is considered identifying but I believe two or three should be written in words. If I should

85. ## algebra1 HELP PLEASE Thanks you!!

The function f(x)=5 square root of x gives the speed in feet per second (ft/s) of a free-falling object after it has fallen x feet (ignoring air resistance). FInd the speed of the object after it has fallen 25 feet. If necessary, round your answer to the

86. ## algebra1 HELP PLEASE Thanks you!!

The formula y=square root 64h can be used to find the velocity v in feet per second of an object that has fallen h feet. Find the velocity of an object that has fallen 25 feet. Round your answer to the nearest tenth.

87. ## Chem

What does it mean when they say materials with the same properties but with different chemical composition? Can you give examples so that I can fully understand?

88. ## Computers C++ (2)

1.) Assume c is a char variable. What value does c hold after the following statement executes? (Type the answer without quotes.) c = toupper('a');___________ 2.) Assume c is a char variable. What value does c hold after the following statement executes?