# Questions Asked onJanuary 4, 2013

1. ## Science

A golf ball was hit and projected in an angle of 60 degrees with the horizontal. if the initial velocity of the ball was 50m/s, calculate the following: a. the time the golf ball was in the air b. horizontal distance the ball traveled c. maximum height the

2. ## calculus

A particle is moving along the x- axis so that its velocity at any time t ≥0 is give by v(t) = (2 pi - 5)t - sin(pi t) A. Find the acceleration at ay time t. B. Find the minimum acceleration of the particle over the interval [0,3]. C. Find the maximum

3. ## algebra

what is the simpler form of the radical expressio. 4 sqrt 2401x^12y^16 I know its 7x^3y^4 but not sure if looks like 7[x^3[y^4 7x^3[y^4

4. ## calculus

consider g(x)= {a sin x + b, if x ≤ 2pi} {x^2 - pi x + 2, if x > 2pi} A. Find the values of a a b such that g(x) is a differentiable function. B. Write the equation of the tangent line to g(x) at x = 2pi. C. Use the tangent line equation from part B to

5. ## calculus

A candy company needs a custom box for their truffles. The box they've chose is in the shape of a cylinder with a hemisphere of the same radius on top. The total volume of the box is V= (1/2) ((4pir^2)/(3))+ pir^2 (y-r), where y is the height of the box

6. ## algebra

Wind farms are a source of renewable energy found around the world. The power P(in kilowatts) generated by a wind turbine varies directly as the cube of the wind speed v(in meters per second) If a turbine generates 700kW in a 5m.s wind, how much power does

7. ## calculus

A forest is burning in a valley. If the fire burns for h hours, the cost of the lost timber is 1000h dollars. They estimate that x firefighters can stop the fire in 3600/x hours. The cost for each firefighter is \$20 (transportation)plus \$25 per hour

8. ## algebra

a factory can produce two products, x and y with a profit approximated by P=14x+22y-900. the production of y can exceed x by no more than 100 units moreover production levels are limited by the formula x+2y,+1,400. what production levels yield maximum

9. ## algebra

Tell whether equation represents direct variation. If so, identify the constant of variation 1. Y=8x Ans: yes, it represents direct variation because its in the form Y=kx. Constant of variation: 8 2. Y=2x+1 3. 3x+y=6 Please help, not too sure if I am

10. ## calculus

at a certain instant the base of a triangle is 5 inches and is increasing at the rate of 1 inch per minute. At the same instant, the height is 10 inches and is decreasing at the rate of 2.5 inches per minute. Is the area of the triangle increasing or

11. ## algebra

how can you write the expression with rationalized denominator? 2+3sqrt3/3sqrt6

12. ## geometry

Three security cameras were mounted at the corners of a triangular parking lot. Camera 1 was 151 ft from camera 2, which was 122 ft from camera 3. Cameras 1 and 3 were 139 ft apart. Which camera had to cover the greatest angle?

13. ## algebra

What is the equation in standard form, of a parabola that models the values in the table? x f(x) -2 4 0 -6 4 70

14. ## calculus

A piece of elastic is attached to two nails on a flat board, with a button attached to the midpoint of the elastic. The ails are 5 cm apart. You stretch the elastic by pulling the button along the board i the direction that is perpendicular to the line

15. ## Chemistry

Consider the following equilibrium at 395K: NH4HS(s) NH3(g) + H2S(g) The partial pressure of each gas is 0.265 atm. Calculate Kc for the reaction

16. ## math

A rectangular field is 35 m longer than it is wide. The length of the fence around the perimeter of the field is 290 m. What are the dimensions (length and width) of the fence?

17. ## algebra

The table shows the amount of milk that wisconsin dairy farms produced from 1939 to 1962 which linear model best fits this data? year milk produced(in billions of lbs 1939 12 1962 15 2005 21

18. ## math trigonometry

1. Two straight roads intersect to form an angle of 75". Find the shortest distance from one road to a gas station on the other road 10o0 m from the junction. 2. Two buildings with flat roofs are 60 m apart. From the roof of the shorter building, 40 m in

19. ## math

the dimensions of trianguloar prism A andtriangular prism B are proportional. The volume of the Triangular Prism is 6,400 cubic feet. If the volume of Triangular prism B is 75% of the volume of Triangular Prism B. What is the volume of Trianguloar Prism B?

20. ## Algebra

A square cake measures 6units by 6 units by 4 units.

21. ## chemistry help !!!!!!!!!!!!!!!!

H2(g)+Cl2(g)=2HCL(g) it is found experimentally that 1 mole of H2 gas react with 1 mole of CL2 gas at constant temperature & pressure , to release 184kJ of heat .what is the enthalpy change for this reaction? ∆H=

22. ## math

A rectangular field is 35 m longer than it is wide. The length of the fence around the perimeter of the field is 290 m. What are the dimensions (length and width) of the fence?

23. ## math question

Estimate the sum of 9.327 + 5.72 + 4.132 to one decimal place.

24. ## Mechanics_physics

A soccer player kicked a ball at an angle of 37 degrees to the horizontal.if the range covered by the ball is 240.3m; calculate (a) The initial velocity of projection ? (b) The time of flight (c) The maximum height attained

25. ## Math

A Quadratic Word Problem The length of a rectangular garden is 4 yards more than the width. The area of the garden is 60 square yards. Find the dimensions of the garden.

26. ## physics

A 1000 kg sports car is initially traveling at 30 m/s. A frictional force f, defined as a function of velocity v, f=-200v, acts on it. What would the frictional force on the car be at 5 seconds?

27. ## statistics

At a large dept. store, the avg. number of years of employment for a cashier is 5.7 with a standard deviation of 1.8 years. If the number of years of employment at this department store is normally distributed, what is the probability that a cashier

28. ## math

You have \$60.00 in your wallet and want to buy some new CDs. If the CDs are \$11.00 each, what number of CDs, x, can you buy? Write and solve an inequality. Then explain your answer

29. ## trigonometry math

An aviator heads his airplane due west. He finds that because of a wind from the south, the course makes an angle of 20" with the heading. If his airspeed is 100 mi/h, what is his groundspeed and what is the speed of the wind?

30. ## algebra

Tell whether equation represents direct variation. If so, identify the constant of variation

31. ## Physics

Help imediately please very urgent! A stone is dropped from a cliff 200m high,if a second stone is thrown vertically upwards 1.50sec after the first was released,strike the base of the cliff at the same in stant as the first stone,with what velocity was

32. ## math

A northbound train and a southbound train meet each other on parallel tracks heading in opposite directions. The northbound train travels 12 miles per hour faster than the southbound train. After 2.5 hours, they are 330 miles apart. At what speeds are the

33. ## algebra

Tristan has \$3.75 in quarters and dimes. She has 21 coins. How many of each coin does she have?

34. ## Language Arts

I just need someone to double check my work. :) Here are my answers: 1. C 2. B 3. A 4. B 5. D 6. B 7. A 8. A Here are the questions: Choose the option that correctly identifies the ( underlined words ) in each sentence. 1. (Stretching for 210 miles), the

35. ## chemistry

How much 6M HNO3 will be required to decrease the pH of 5000L solution of pH=9.6 to pH=3?

36. ## Physics

Our Milky Way galaxy is very similar to our neighboring galaxy Andromeda. Consider that each galaxy contains approximately 4.0 x 10^11 stars each star having an average mass of 2.0 x 10^30 kg. a. If the gravitational pull of Andromeda is 2.4 x 10^30 N, how

37. ## Principles of accounting

Sold goods on credit at list price less 10% trade discount to: D. Prince 25,000 S. Cato 14,000 What is the trade discount amount and how much does each person pays for the goods?

38. ## Accounting

good such as milk bread and chesse would problably be costed using what method of inventory costing

39. ## physics

A coin is placed on an old record turntable which rotates at 78 rpm. The coefficient of friction between the record and the coin is 0.17. b) At what distance (m) from the center will the coin begin to slide off the record? c) What is the period of the

40. ## math

Please help me!!!!!!!!! 32. For all pairs of real numbers M and V where M=3V+6, V=? Here are the choices F. (M/3)-6 G. ( M/3)+6 H.3m-6 J. M-6/3 K. M+6/3 34. If a=b-2,then (b-a)^4=? F. -16 G.-8 H.1 J.8 K.16

41. ## Geometry

a baseball diamond is a square 27 cm on a side. how far is the homeplate from the second base?

42. ## Math

A Quadratic Word Problem. The difference between two positive numbers is 3. The sum of the squares of the numbers is 89. Find the numbers.

43. ## algebra

The function f(x)=x^2. The graph of g(x) is f(x) translated to the right 3 units and down 3 units. What is the function rule for g(x)

44. ## 8thMath

In mrs Wilsons class there are 24 boys and the girls are 2/5 the class ... How many girls are in mrs Wilson class

45. ## calculus

solve the logarithmic equation. Be sure to reject any value of x that is not in the domain of the orginal logarithmic expression. In square root x+7=1 I get this far and then get stuck, can you help me? In square root x+7=1 e=square root x+7 e^2=x+7

46. ## Math

The mean of three test scores is 74. What must a fourth test score be to increase the mean to 78?

47. ## SeQuEnCeS and SeRiEs: HELP PLZ!

The first three terms of the sequence -8,x,y,72... form an arithmetic sequence, while the second, third and fourth terms form a geometric sequence. Determine x and y.

48. ## math

For a geometric series, S4/S8= 1/17, determine the first three terms of the series.

49. ## calculus

A forest is burning in a valley. it is estimated that if the fire burns for h hours, the cost of the lost timber is 1000h dollars. They estimate that x firefighters can stop the fire in 3600/x hours. The cost for each firefighter is \$20

50. ## calculus

Let g be the function give by g(x) = x^4 - 4x^3 + 6x^2 – 4x + k where k is constant. A.On what intervals is g increasing? Justify your answer. B.On what interval is g concave upward? Justify your answer. C.Find the value of k for which g has 5 as its

51. ## Physics

State the expression for moment of inertial of the following (1)A rod (2) Rectangular plate (3) ring (4) circular disc

52. ## physics

A toy plane of mass 0.624 kg is flown in a circle when attached to a string. The plane moves around the circle with a rotational speed of 8.09 rpm. The length of the string is 2.60 m. What is the tension in the string?

53. ## chemistry

A student added 50cm^3 of 1.00 moldm^-3 sulphuric acid to 25cm^3 of 1.00 moldm^-3 sodium hydroxide. Calculate the pH of the solution formed.

54. ## PHYSICS

Find the electrical force that exist between two particles having 6.0 mC and 18 nC when they are 0.5cm apart

55. ## Chemistry

what is the bond length of sulfur trioxide?

56. ## personal statement

i need to write personal statement using Common App. Option 3: Indicate a person who had had a significant influence on you, and describe that influence. I do not know how to organised the paragraph and how could I add more to essay and what to end please.

57. ## calculus

A forest is burning in a valley. it is estimated that if the fire burns for h hours, the cost of the lost timber is 1000h dollars. They estimate that x firefighters can stop the fire in 3600/x hours. The cost for each firefighter is \$20

58. ## Drama

I need some theme ideas from the play Hello From Bertha by Tennessee Williams. Any ideas?

59. ## English - ms. sue

ms. sue I write a Christmas story, it have to be on topic that differing points of view make christmas exciting/interesting. i write my story on a rich girl who go and celebrate christmas with her penpal that be really poor and she realize that christmas

60. ## colllege algebra

use synthetic division to factor x^3-2x^2-9x+18

61. ## math

You draw 2 marbles from a bag containing 3 blue marbles, 2 green marbles, and 5 red marbles without replacement. What is the probability of drawing a red marble and then a green marble?

62. ## Mechanics - physics

A car of mass 400kg moving initial at 36km/h increases to 120km/h in 6sec, what is the force acting on the car?

63. ## Math

A Quadratic Word Problem If one side of a square is increased by 2 inches and an adjacent side is decreased by 2 inches, the area of the resulting rectangle is 32 square inches. Find the length of one side of the square.

64. ## cultural diversity

Advocates of social skills building and role modeling would not be inclined to choose a Western style of play because Western play. a. has a people focus, not an object an object focus b. is impossible for many non-mainstream children to master c. lacks a

65. ## physics

On August 12, 2005 the Mars Reconnaissance Orbiter (MRO) was launched from Earth and reached Mars on March 10, 2006. The orbiter is in roughly circular orbit about 390 km above the martian surface. Mars has a radius of 3396 km and a mass of 0.642 x 1024 kg

for 0

67. ## math

solve the equation log lower 6(x+9)-log lower 36 x =1 the 6 and 36 should be dropped down, then (x+9) and the x are higher. Please show work

68. ## math

Including a 6% sales tax, a new television costs \$492.9. Find the cost of the television before tax.

69. ## Math

When M+N=8 and 2R+N=8, what is the value of R? A.16 B.4 C.-4 D.-8 E. It cannot be determined from the information given.

70. ## geometry

angle xoz (5m-5) angle yoz (7m+29) these are supplementary angles. How do you solve?

71. ## maths

Find the equation of the tangent to circle x² + y² - 6x + 4y - 12 = 0 which is parallel to line 4x +3y +5

72. ## Physics

State the expression for moment of inertial of the following (1)A rod (2) Rectangular plate (3) ring (4) circular disc

73. ## spanish

which is the correct answer??? "Sarits y yo (preparan/preparamos) la leccion." Is is preparan or preparamos and why?

74. ## math

What is the simlified form of the square root of 8x^5?

75. ## math

Which of the values is in the solution set for the inequality -8-7x>6 It is multiple choice A=-1 b=-2 c=-3 d=2 I did this: -8-7x>6 add 8 to each side -7x>14 -7/-7>14/-7 x

76. ## physics

Find relatiobn between alpha and beta

77. ## biology

write the short note of cell inclusions,including the important points?plz help...

78. ## chemistry help plz

what are the values of a,b,c and d in the balanced chemical equation aFe^2+(aq)+bAl(s)=cFe(s)+dAl^3+(aq) where a,b,c and d are the lowest possible whole numbers? a= b= c= d=

79. ## algebra

factor the expression 4x^2+25x+36

80. ## algebra

what are the solutions of the quadratic equation 4x^2+33x+54=0

81. ## physics

The radius of sphere at therate of 4cm per second .at what ratis its surface area chang when theradius is 6cm

82. ## Statistics & Probability

If X is a normal random variable with mean 11, and if the probability that X is less than 12.10 is .72 , then what is the standard deviation of X? Select one: a. 3.00 b. 6.25 c. 2.50 d. 1.25 Please note that the answer for the above is stated as c.2.50.

83. ## science

speech on recycling

84. ## physics

c) A penny sits 12 cm from the center of a record turning at 33 1/3 rpm. What is the tangential speed in m/s?

85. ## algebra

Find the value of y for a given value of x, if x varies directly with x. If y=39 when x=-117 what is y when x=-132 my answer y=k*x 39=k*-117 39/-117=k k=-0.3 y=k*x y=-0.3*-1.32 y=-3.96 can someone please check my work

86. ## geometry

he small pipe has a radius of 18 feet and a height of 21 feet while the large pipe has a height of 28 feet. What is the volume of the large pipe in terms of π?

87. ## music

The serpent eventually evolved into which modern instrument? bassoon tuba cornet French horn

88. ## Language Arts URGENT!

2. Which of the following from "Take the Junk Out of Marketing Food for Kids" is an example of semantic slanting? (1 point) "food pyramid" "food manufacturers" "food police" 3. Which of the following testimonials would be MOST appropriate to support the

89. ## math

if you deposits \$1200 INTO A SAVING ACCOUNT that pays 1.5% annual simple interest if you don't withdrawals or deposits how much money will you save in two in a half year

90. ## math

use the rational zero theorem to find all the zeros of the polynomial function. Use the factor f over the real numbers. f(x)=x^4+2x^3-7x^2-8x+12 x= f(x)=

91. ## Cultural Anthropology 101

ANSWERS ARE IN() WITH *** SOME ONE PLEASE CHECK MY ANSWERS... THANKS Civilization, as defined by anthropologists, means: how “cultured” a population is. any successful society. a self-contained group with no necessity for trade. (D)***a society with

92. ## nawi

wie kann man tierrefat thema elefant oder elefanten und elfenbein. könnt ihr den refarat schreiben und schicken ?

93. ## physics

A student puts on a Dresden Dolls disc in her cd player which spins at 1800 revolutions per minute. A compact disc has a mass of about 0.016 kg and a radius of 6.0 cm. a) What is the period of rotation in seconds? b) What is the frequency of the rotating

94. ## Probability

If X is a normal random variable with mean 11, and if the probability that X is less than 12.10 is .72 , then what is the standard deviation of X? Select one: a. 3.00 b. 6.25 c. 2.50 d. 1.25 Please note that the answer for the above is stated as c.2.50.

95. ## algebra

Find the real solutions of the equation. -8x^3-17x^2+7x=0

96. ## Spanish Check??

Check my spanish work on page 2 please? Anyone?

97. ## Hamlet...essay - Writeteacher

Kristy Cheung Ms.Weately Grade 11 U English January 10, 2013 Title A person who sets off another person by being a contrast to that person is known as a foil to the character. In Shakespeare’s great tragedy Hamlet, two character Laertes and Fortinbras,

98. ## chemistry

For reduction of 1,4 dinitrobenzene when doing the equation I add h20 at end then count how many H's on right side which is 10 as 1,4diaminobenzene has 8, then on left there are 4H's on 1,4 dinitrobenzene. so that means you need 6(H). But how come in the

99. ## Physics

State the expression for moment of inertial of the following (1)A rod (2) Rectangular plate (3) ring (4) circular disc

100. ## math

can someone please explain/show how to do this? im really stuck with fractions 5 1/3 + (-3 9/18) thanks so much

101. ## math

solve the polynomial ineqaality. express the solution set in interval notation. x^3+x^2+64x+64>0

15d+27d-9d

103. ## Math- Reiny can you help me with this question

I know how to do the work, but the way the question is worded I am not sure the answer. The math works comes out to -2 which is b but if you want the number less than -2 the answer is c. Which are they asking for . This is my work. Which is the value is in

104. ## algebra

divide -2x^3+21x^2-20x-12 by (x-3)

105. ## algebra

for the function f(x)=(3-4x)^2, find f-1. determine whether f-1 is a function

106. ## Math need help!

Can anybody help me with these questions? im not good at these the only one im good at is the mode. 1. What is the mean of the numbers, 5,6,4,7,3,5? 3. What is the median of 11,13,12,12,12,13,9,14? 4. what is the range of 145,119,156,158,125,128,135? 5.

asked by T.J And the Vibe
107. ## Probability and Statistics

For question 1, here's the numbers you use: {20, 18, 17, 19, 22, 29, 16, 27, 24}. 1. Calculate the 50th percentile. For questions 2 and 3 use this number line: {16, 17, 18, 19, 20, 22, 24, 27, 29, 80} 2. Calculate the z-score for the 80 & explain what it

108. ## medical billing and coding

How do I code a drug overdose intentionally the drug is verapamil?

109. ## math

11/26=x/15 x=?

110. ## Physis

a 2kg mass is hung from a tree and is released. Using the nodes on the graph, sketch the general shape of the vertical position of the mass versus time

111. ## college algebra

let f(x) be polynomial function. explain how to use the factor theorem to check if x) is a factor of F(x)

112. ## algebra

what is the solution of the system of equations. 2x+2y+3z=-6 3x+5y+4z=3 2x+3y+4z=-10

113. ## Math

2 in, 5 in, 0 in, 0 in, 15 in, 1 in,0 in, 3 in, 1 in, 4 in what is the mode?

asked by T.J And the Vibe
114. ## math

solve the following exponential expression. e^x+e^-x=6