1. CALCULUS

Rate of Change You are given the dollar value of a product in 2008 and the rate at which the value of the product is expected to change the nest 5 years. write a linear equation that gives the dollar value V of the product in terms of the yeart.(let t= 0

2. physics

An airplane is heading due south at a speed of 515 km/h. A wind begins blowing from the southwest at a speed of 100 km/h (average). (Hint: First draw a diagram.) (a) What is the velocity (magnitude and direction) of the plane relative to the ground?

3. physics

A rescue plane wants to drop supplies to isolated mountain climbers on a rocky ridge 235 m below. The plane is traveling horizontally with a speed of 280 km/h (77.8 m/s). (b) Suppose, instead, that the plane releases the supplies a horizontal distance of

4. The Excavation : By Augusto Roa Bastos

I read this short story and I understand it pretty much but there are some things Im confused about. Were all the people in Cell 5 murdered by machine gun fire? Did Perucho Rodi escape from Cell 4 and avoid getting caught as one of the people involved? Was

5. Physics

We consider a man of mass m = 84 kg as shown in the figure below using crutches. The crutches each make an angle of θ = 26degrees with the vertical. Half of the person's weight is supported by the crutches, the other half is supported by the normal forces

6. physics

A box is given a push so that it slides across the floor. How far will it go, given the coefficient of kinetic friction is .21 and the push imparts an inital speed of 4.2 m/s?

7. physics

The average speed of a nitrogen molecule in air is about 686 m/s, and its mass is 4.85×10-26 kg. If it takes 3.78×10-13 s for a nitrogen molecule to hit a wall and rebound with the same speed but moving in the opposite direction, what is the magnitude of

8. physics

Jimmy has caught two fish in Yellow Creek. He has tied the line holding the 3.40 kg steelhead trout to the tail of the 2.29 kg carp. To show the fish to a friend, he lifts upward on the carp with a force of 75.3 N. What is the tension of the rope

9. Pre-Calc

A pizzeria sells a rectangular 18 X 24 inch pizza for the same price that it sells its large 24" diameter pizza. If both pizzas have the same thickness, which option gives the most pizza for the money. Gosh I'm really rusty on my geometry. Can you give me

11. physics

A hunter aims directly at a target (on the same level) 120 m away. (a) If the bullet leaves the gun at a speed of 290 m/s, by how much will it miss the target? (b) At what angle should the gun be aimed so the target will be hit?

12. Trigo

Given that a^2+b^2=2 and that (a/b)= tan(45degee+x), find a and b in terms of sinx and cosx. I don't know what i'm supposed to do, and i don't come to an answer! Help, thanks! my workings: tan(45+x)= (1+tanx)/(1-tanx) a/b = (1+tanx)/(1-tanx)

13. Algebra 1A

translate to an algebraic expression 32 more than n, translation is > is this correct? thanks

14. Calculus

Suppose f and g are functions that are differentiable at x=1 and that f(1)= 2, f'(1)= -1, g(1)= -2, and g'(1)= 3. Find the value of h'(1). h(x)= [x f(x)] / [ x + g(x) ]

15. World History

Can you check my answer: Question: What were the key events that shaped Plato's beliefs? My answer: Plato was influenced by Socrates to search for the meaning of life. But after Socrates was executed Plato focused on how society would bring out the best in

16. physics

A 5.55 kg block covered in sandpaper is pushed along the ceiling of a room under construction. The block is pushed across the ceiling with a force of 77.9 N directed at an angle of 71.5° to the horizontal. If the coefficient of kinetic friction between

17. Physics

Two objects are connected with a string. In the quantitative treatment of the problem we assume that the string exerts a tension force of magnitude T on each of the two objects. What do we need to assume for this assumption to be valid? a) the string may

18. math

Many people are interested in losing weight through exercise. An important fact to consider is that a person needs to burn off 3,500 calories more than he or she takes in to lose 1 pound, according to the American Dietetic Association. The following table

19. physics

A house painter uses a chair and pulley arrangement to lift himself up the side of a house. The painter's mass is 69.2 kg and the chair's mass is 24.0 kg. With what force must he pull down on the rope in order to accelerate upward at 0.379 m/s2?

20. MATH

Many people are interested in losing weight through exercise. An important fact to consider is that a person needs to burn off 3,500 calories more than he or she takes in to lose 1 pound, according to the American Dietetic Association. The following table

21. AP US History

I am doing a report on the Connecticut River Valley colony for history. I am supposed to be a surveyor in the first half of the 18th century and i am supposed to tell the advantages and disadvantages the the colony would be. I am supposed to include things

22. Math

solve 3(2x-2)=18 select the correct choice below& if necessary fill in the answer box to complete your choice. a. the solution is x= simplify answer. b. the solution is all real numbers. c. there is no solution.

23. physics

A 62.9 kg spacewalking astronaut pushes off a 697.0 kg satellite, exerting a 117.0 N force for the 0.977 s it takes him to straighten his arms. How far apart are the astronaut and the satellite after 3.57 min?

24. physics

(Requires calculus) Prove the relativistic work-energy theorem in one dimension. The force exerted on a particle is given not by F=ma, but F=dp/dt. Using the expression for the relativistic momentum of a particle p=γmv, integrate the force exerted on the

25. Math

True or fals: a number is divisible by 8 if it is divisble by 4 and divisible by 2? And how many variations of 3_2_ are divisible by six?

26. science

Which of the following samples will react completely with 20.0 mL of 0.200 M LiOH 10.0ML of 0.100 M HCL 10.0mL of 0.200 M H2SO4 10.0mL of 0.100 M HNO3 20.0mL of 0.200 M H3PO4 20.0mL of 0.100 M HBr How do I do this problem??

27. Physics

tow forcess F1=(3.0)in the x direction minus(4.0) in the y direction and F2= (-6.0)in the x direction minus (4.5) in the y direction are applied to a particle. what third force would the the net, or resultant, force on the particle zero?

28. Algebra 1A

I need help please. you have recently found a location for your bakery & have begun implementing the first phases of your business pla. Your buget consists of an \$80,000 loan from your family& a \$ 38,250 small business loan. these loans must be repaid in

29. Biology/Chemistry

During a “perm”, disulfide bonds can be broken and reformed using which treatments, respectively? I think the answer is a. but can someone confirm this? a. an oxidizing agent followed by a reducing agent b. a reducing agent followed by the use of water

30. math (Algebra)

Express x2+4x+7 in the form (x+p)2+q. Hence show that equation x2+4x+7=0 has no real root???...I have problem in writing square in my computer so remember x2 is x square and 2 after bracket is squarer too.

31. geometry

In a triangle ABC, angle B is 3 times angle A and angle C is 8 degrees less than 6 times angle A. The the size of the angles. Size of angle A is = Size of angle B is = Size of angle C is = can someone please help me with this..? I am very weak at

32. Algebra 1A

find the opposite, or additive inverse of -57= +57 is this correct? if not can you please show me the answer? thanks

33. religion

What are Hinduism's core beliefs?

34. Algebra 1A

solve for the indicated letter b=a+d for a= the solution is a= b. is this correct? thanks

35. math

Factor. 45c+25d could someone guide me how to start this? thanks

36. Pre calculus

How do I solve this quadratic inequality? X2- 7x+10>0 the problem is actually written x to the 2 power -7x+10>0.

37. algebra again

Write an equation that passes through the points (4, 3) and (2, -2) I have -2 -3 is -5 and 2-4 is -2 so y equals -5/2x plus b. I put in 2,-2 into the equation to get the y intercept, so 2 equals -5/2 times 2 plus b -5/2(2) is -10/-4 reduce to -5/-2 Now add

38. fraction help algebra

Write the equation passing through the points (-9, 6 ) and (1, -5). The worksheet has multiple choice, so I know y intercept is either 39/10 or -39/10. I have -11/10x plus b then -11 (1) is -11 10(1) is 10 Then -5 plus 11/10 I change -5 to -15/10 but I'm

39. ict

does any one any good sites i can use to help me with my ict homework. mine is the same as lou`s homework but no-one has replied. its about copyright design and patent act. i have found out the year -1988 its the other questions i am finding it hard to

40. physics

A 100 kg chesterfield is pushed up a frictionless ramp at a constant speed by a delivery person. If the ramp is inclined at 25.5° to the horizontal, what horizontal force must the delivery person apply to the chesterfield?

42. world history

Was plato's ideal form of government philsopher kings.

43. physics

an object of mass m = 2,113 g held by a massless string on a frictionless inclined surface. What is the magnitude of the force that the surface exerts on the object if θ = 52 degrees ?

44. French

meobdailfr.... its french what is the unscrambled...

45. math

please check my answers 1. the ratio of 5 3/5 to 2 1/10=8to 3 2.the ratio of 7 dimes to 3 quarters =14 to 15 3.Marc took 3 hours (h) to mow a lawn while Angelina took 150 minutes (min) to mow the same lawn a week earlier. Write the ratio of Marc’s time

46. Math (Algebra)

Can someone please check my answer? 9[73-(-95-61)]= 2061 if my answer is incorrect could you tell me where I missed? and the correct answer please? Thank you I would appreciate it...

47. Math

I did 2/3 + 1/3 I got 3/3. How do I do 7/15 + 9/20? I'm not good at adding fraction with different denominators.

48. math

Suppose that an experiment has four possible outcomes: A, B, C, and D. If P(A) = P(B) = P(C) and P(D) = 2P(A), what is the probability of each event?

49. Chemistry 101

How do I find the mass % of Oxygen in sodium oxide?

50. Integration

How should i integrate (4cos^2 - 1)? Do I use a certain formula??

51. ap calculus

write the general form of the equation of the lines throught the point (a) parallel to the given line and (b) perpendicular to the given point point- (2,1) line- 4x-2y=3

52. ?? Maths??

Find the values of b and c for which x^2+bx+c is a factor of 2x^3-3x^2-3x-5 Ok, i've tried to find a factor of the quadratic function using trial and error. Let f(x) = 2x^3-3x^2-3x-5 f(1) is not equals to 0 f(-1) is not equals to 0 ... and i cant find a

53. Math

Solve. 8x+4=4x+5= the solution is x= simplify your answer. Type an integer or fraction

54. English

How can the TESOL English learners standards be used as a guide for differentiating instruction for various levels of ELLs?

55. chemistry

What is the total pressure of a gas mixture that contains hydrogen at 0.45 atm, nitrogen at 0.25 atm, and argon at 0.60atm?

How did Canadian Inuits make their decisions. Also did the have a leader or chief and how were they chosen

57. Math

Can someone please explain how to solve 3x^2+7x-15=0 by using the quadratic equation? I know that the equation is: ax^2+bx+c=0 but I get confused about how to set the problem up and solve. Thanks.

58. Math

Find an equivalent expression without parentheses. -(c-11)=

59. ENGLISH higschool

Does knowledge acquired in highschool liberate or hinder studnets?

I have applied an internship in a big 4 firm recently, but I don't know if I will be selected to the on campus interview until 3 days from now. But before that, I want to request a office location preference change. How can I do this in a appropriate way?

61. special ed

I need to make lesson plans for students with mental retardation. Can you please tell me what you think of my ideas. For Pre-K work on gross motor skills, play simon says, use songs that make the child use their motor skills (if you're happy and you know

62. Pre-Calc

Determine the solution. x^2=|x|algebraically I have no idea how to proceed with this. Can you please help?

63. Math

I don't know if there is a limit on the length of the thread. My posts don't seem to go in any more to: http://www.jiskha.com/display.cgi?id=1253908539 The correct formulas are: F = C*9/5 + 32 C = (F-32)*5/9 The graduations are wider apart on the C scale,

How do you solve this equations? (xy^-3)^-5 (3x^4)(4x^12) ab^-6 ______ c^0d^-4 x^3y^0(z^-4) Can you please show it step by step? Thanks.

66. french

student A: Est-ce que tu pouvais sortir avec tes amis ce soir? student B: No, je ne pouvais pas sortir aves mes amis ce soir. would this be correct? Oh and thanks Sra for your help

67. Algebra 1A

multiply (-9)(11)= 99 is this correct

68. algebra

can someone check my answer please? Solve for indicated letter. b=8c ,for c the solution is c=b/8 ? is this correct?

69. math

an extension ladder adjusts in length from 10 feet to 16 feet. suppose you've leaned your ladder against your house so that, at its minimum length, it touches the base of your first floor window, 9 feet above the ground. without moving the base, how high

70. Algebra 1A

multiply 8x(-2.3)= this is the problem. I haven't been able to figure it out my answer was 18.4 help please

71. us history

why is the study of early Americans so difficult?

72. math

1. You have recently found a location for your bakery and have begun implementing the first phases of your business plan. Your budget consists of an \$80,000 loan from your family and a \$38,250 small business loan. These loans must be repaid in full within

73. Physics

How do you know when to use cos or sin or tan when they give you angles in the question to find tension or force?

74. statistics

1. In a large box are 20 ping-pong balls—10 of them are red and numbered 1 through 10, and the other 10 of them are green and also numbered 1 through 10. Two balls are selected from the box without replacement. 1. a.Find the probability that the first

75. english

John and I are going to the store. Would you like to come along with A. me and him? B. him and I? C. I and him? D. him and me? don't know if it's b or d

76. french

i need to write a composition of 15 lines on une visite le medicine

77. us history

In what ways did democracy create a new political culture? How did democracy impact social change?

78. algebra

Write an equation of a line that passes through the points (-6,7) and has a slope of -4 How do I do this? it would be y equals -4x but not sure how to do the rest.

79. algebra 1

Write the equation for the line that passes through the point (6,7) and has a slope of 1/2. Give as a simplified fraction. Again, I have y equals 1/2x but not sure for the rest.

80. physics

The airplane can take off when its airspeed (speed of the air flowing over the wing) is equal to 65 knots. What is the length of runway required for the plane to take off if there is a 25 knots head wind? The runway at the Tallahassee Regional Airport has

81. physics

A 2.85×10-4 kg mass is hanging from a length of string, while being pushed by a steady horizontal breeze such that the string makes an angle of 38.4° with respect to the vertical. Find the magnitude of the push.

82. francais

Please can you check my work so far. we have to fill in the gaps. my answers are in '..'. i have no idea what is supposed to go in the gaps my teacher says some answers would be better than others please could you help. Je ne mange jamais 'le porc' parce

83. MATH

Translate to an algebraic expression. The product of 21% and some number. The translation is= Type the percentage as a decimal. use d to represent some number.

84. s.s

Im a 5th grader and I need help with how to start a book report.

85. calculus HELP

how do you find the domain of the function:: 14/(x^2 - 361)

87. Calculus

So I have a function of two variables f(x,y)=y^x. where is this function continuous? I'm thinking that the only restriction that applies is y>0

88. Algebra 1A

5x-1=39 the solution is x= is the answer 24? thanks

89. Algebra 1A

find the decimal notation for fraction-7/13 the decimal notation for the fraction round to the nearest hundredth. help

90. algebra

solve the formula for the indicated variable. B=yw+y for w the solution is w= ? I have solved similar problems such as this but extra letter throws me off... can someone please help me?

91. algebra

can someone please check my answer to this problem? solve for indicated letter. n=m+d, for m the solution is m= (n+d)/m is this correct?

92. Math

Find the smallest postive integre that gives a remander of 2 when divided by either 3 0r 7, and gives a remainder of 3 when divided by 5.

93. English

How does Dos Passos show bias in the book Manhattan Transfer? (examples) Thank You

94. Algebra 1A

help multiply 8x(-2.3)=-18.4 is this correct? thanks

95. Algebra 1A

multiply 5/7(b-35)=o is this correct? thanks

96. Algebra 1A

Help Please! multiply 5/7(-35)= 0 is this correct? if not will you show me please? thanks

97. science

A biologist finds a cell with what appears to be two nuclei(nucleus) what conclusion might you make about why this cell appears to have two nuclei?

98. pigskin geography

Can you help me answer this question ? Beyond the 30 & American hitory ! september 23, 1806 is the date Lewis& clark returned to the city near the expedition began. Which host team might salute their feat at a half-time observance? thank you.

99. pigskin geography

My answer is St Louis Rams . Is it correct

100. Cultural Diversity

What are some of the changes the United States has made concerning the treatment of Muslim and Arabic members of society?

101. english

The clerk will wait on the person _______ is next. A. who (my answer) B. whom C. whoever D. whomever

102. medical term

A neurotic is suffering from A. neurasthenia. B. neurasthenics. C.neurosis(the best answer i think) D. neurasthectomy.

103. Math

Multiply. (-13/36) (1/8) (-18/15) (-1/15)= I got -0.0036111 How do I convert this to a fraction?

104. FIN 200

Collins Office Supplies is considering a more liberal credit policy to increase sales, but expects that 9 percent of the new accounts will be uncollectible. Collection costs are 5 percent of new sales, production and selling costs are 78 percent, and

105. Math

Lisa needs to make 2 times as many tunas as cheese sandwiches and 4 times as many ham as cheese sandwiches. If Lisa makes 56 sandwiches, how many of each of the 3 kinds will she make?

106. english-metaphor

All sentences must be properly constructed. Finally, you are to use at least one simile/and or metaphor in each paragraph. This is what I have so far In Brooklyn there was always something to do, there were so many exciting places to go. If you were bored

107. MATH

please check my answers 1. the ratio of 5 3/5 to 2 1/10=8to 3 2.the ratio of 7 dimes to 3 quarters =14 to 15 3.Marc took 3 hours (h) to mow a lawn while Angelina took 150 minutes (min) to mow the same lawn a week earlier. Write the ratio of Marc’s time

109. college

In what ways did democracy create a new political culture? How did democracy impact social change?

What is the differants between: verbs that are in base form and verbs that are not in base form

A circle has the equation x^2+y^2-4x+6y-12=0 and i have already found that the centre has a coordinate of (2,-3), and a radius of 5 units. But i need to find points on the circle that has the gradient of -4/3 when a tangent is drawn on the point. How do i

112. MATH

Divide if possible 48/-8 select the correct choice below and fill in any answer boxes in your choice A.48/-8= B.The answer is undefined.

113. yr 9 ict

for ICT i need to answer these questions about Copyright designs and patent act:- . when did this act come into being? 1988 . find a definition of the Act .list three ICT and three non-Ict things that are covered by this Act . what penalties can you face

114. french

does spots mean commercial i have tried dictionaries and online translators none of them know the word

116. Maths!

Given that (2^3x) x (7^2x) = 7^(x-1) x 2^(2x+2), find 14^x without using a calculator.

117. science

what is technology and what are the categories give five examples of each i need an answer imediately PLEASE!!!!

118. Math

Use laws of exponents to simplify. (10^(11/14))^(2/9) Would the answer be 10^(11/63) ?

Shelby had \$18.50. she spent \$7.25 at the car wash. Write an expression that shows what she spent.

120. Math

Simplify. 5[2-9(1-4)]=

121. computers

Hey mathmate is it posible to make the computer read my powerpoint presentation and thanks again for answering my other question

how long has a shield volcano lasted?

123. Math

can someone answer this for me? simplify. 5[2-9(1-4)]=

124. social studies

what is a delta plain

126. ict writeacher

just wanted to say thanks for your time to help me your a star!

127. SOCIAL STUDIES

I am trying to understand what congress cannot do, but its confusing.

128. physics

the x- and y- component of an acceleration vector are 3.0 m/s^2 and 4.0 m/s^2, respectively. (a) The magnitude of the accerleration vector is (1) lets than 3.0 m.s^2, (2) between 3.0 m/s^2 and 4.0 m/s^2, (3) between 4.0 m/s^2 and 7.0 m/s^2, (4) equal to

hi ive got the same assignment as lou and keiran on the copyright design and patent act. im struggling to find the non- ict things which need the copy design and patent act:- is it your name and personnal details? sorry to be a pain in asking

130. History

i need help finding information (websites) on what education was like during the 1879-1899 and 1900-1919 Thanks

131. Accounting

Explain why supplies cannot have a credit balance

132. circles

the radius of a curvature is 10ft and the height of the segment is 2ft. What is the length of the chord

133. Mancheaser High

link the European wars with the American wars of the 17 century

134. Mancheaser High history

factors that lead to Portuguese hedge money(monopoly or control) in Africa

135. aed200

Will you have a behaviorist approach to instruction or a constructivist one?

136. com 220

What would be a better conclusion to my paper? Depression, anxiety, and other mental illnesses are worldwide to be thought of diseases that are “just in the head”. Even if that is true the patients know they are sick and they need help by taking

137. critical thinking

How can a problem statement be formulated so that it is considerate of stakeholder's perspectives

138. Math

What are the steps of order of operation?!

139. Algebra 1A

in 1993 the elevation of an offshore well was -2990ft. in 1998, a new well was 370ft. deeper. what was the elveation of the new well in 1998. in 1998 the elevation of the new well was -3360. is this correct? thanks

140. Math

With order of operations, how would I solve this equation?! 12-18.5+15+6.3-1+28

141. biology

What will happen to the reaction without an enzyme?

142. Algebra 1A

translate to an algebraic expression. 3 divided by y. the translation is =3/x=1 & y=3 is this correct? thanks

143. a

8x(-2.3)=-18.4=2 is this the correct answer? thanks