# Questions Asked onJanuary 11, 2017

1. ## physics

A man is standing on a platform that is connected to a pulley arrangement, as the drawing shows. By pulling upward on the rope with a force the man can raise the platform and himself. The total mass of the man plus the platform is 121 kg. What pulling

2. ## Math

Convert $e^{-\pi i}$ to rectangular form. Not sure how to start this problem, should I use Euler's formula? Can anyone help provide the steps please? Thanks

3. ## Math

1. Which expression is equivalent to (-2)(a+6)? A. -2a+6 B. 2a+12 C. -2a-12*** D. -2a+12 2. To which sets of real numbers does the number -22 belong? Choose all subsets that apply. (There's two right answers) Whole Numbers Rational Numbers*** Integers***

4. ## physics

Force F1 acts on a particle and does work W1. Force F2 acts simultaneously on the particle and does work W2. The speed of the particle does not change. Which one of the following must be true? W1 is zero, and W2 is positive W1 = - W2 W1 is positive, and W2

5. ## Algebra 2

Rick deposits $1,000 into an investment account which earns 4% annually. Sally loans$1,000 to a friend, and the friend agrees to pay her $50 each year, and will return the$1,000 after 10 years. Determine the amount of money each person has after 10

6. ## physics

A 1450-kg submarine rises straight up towards the surface. Seawater exerts both an upward buoyant force of 16890 N on the submarine, as well as a downward resistive force of 1010 N. What is the submarine's acceleration?

7. ## Social Studies

1. How did the Panama Canal benefit American trade? A. It made it cheaper and faster to ship goods.*** B. It allowed a higher volume of goods to travel. C. It improved trade relations with Latin America. D. It allowed the United States to dominate global

8. ## Algebra 2

For the annual rate of change of +70%, find the corresponding growth or decay factor. 0.70 1.70 170 70 For the annual rate of change of -75%, find the corresponding growth or decay factor. -75 1.25 -0.75 0.25 I'm confused, please help? How can I solve

9. ## Calculus

a 160-inch strip of metal 20 inches wide is to be made into a small open trough by bending up two sides on the long side , at right angles to the base. the sides will be the same height , x. if the tgrough is to have a maximum volume, how many inches

10. ## Maths

How many parallels of latitude have a radius of 2500km?

11. ## Maths

An aeroplane leaves the point X (43°N,71°W) and flies due east at 500km/h.After 3hours (a)how far has it travelled (b)what is its longitude?

12. ## math

Two part problem that need help with. 1. Jill arranged her baseball cards in 4 rows of 9 cards. Then she arranged them in 2 rows of 18 cards. How many other ways can Jill arrange her cards in equal rows? 2. Sam has fewer baseball cards than Jill. There are

13. ## Algebra

Shirts with the a school's mascot were printed, and the table shows the number of people who bought them the first, second, third, and fourth weeks after their release. Which graph could represent the data shown in the table? Weeks | Number of sales 1 |22

14. ## Calculus

if f(x)= |(x^2-9)(x^2+1)| how many numbers in the interval [-1,1] satisfy the mean value theorem? None 1 2 3 Will someone please explain in detail?

15. ## Maths

An aeroplane leaves a point on latitude 54°S at 10 a.m.it flies due south at a steady speed at 800km/h. (a)what is the latitude at mid-day(b) At what time does it pass over the south pole

16. ## ela

1. The portion of a story in which the characters are introduced and the setting is described is called the (1 point) climax. exposition. rising action. falling action. 2. Imagine you are going to add the following events to a plot diagram for The Watsons

17. ## Maths

The speed of a point A due to the rotation of the earth is twice that of a point B.If A is on latitude 22°N.calculate the latitude of B

18. ## English

Can someone please help check my answers I'm not the best in English and need help. In the following four assessment items, choose the sentence in which the appositive or appositive phrase is essential to the sentence and punctuated correctly. (1 point) A)

19. ## Maths

Show that the points (20°N,20°E) and (60°N,160°W) lie on the same great circle.Find their great circle distance apart.

20. ## Physics

A ball is allowed to fall freely from certain heightn. What distance it covers in 1st second?

21. ## Social Studies

1)What was John James Audubon famous for? A)painting and cataloguing American animals, especially birds. B)painting the new living conditions in urbanized areas. C)representing new immigrants through drawings and paintings. D)surveying and creating maps of

22. ## Social Studies

Using your knowledge from the text and Chief Joseph’s speech, what can be said about the treatment of Native Americans during this time period? How might many Native Americans have felt? Do you think you would have agreed with Chief Joseph if you were

23. ## algebra

Please simplify using long division (showing all work) : (8b^3 -6) / (2b-1). Thank you.

24. ## Physics

Two forces are applied to a box on a frictionless surface. One force is 40 N [S]. The second force is 70 N [N30ºW]. What is the overall net force? a) 40.6 N [S59.5ºE] b) 110 N c) 40.6 N [N59.5ºW] d) 40.6 N [S30.5ºW]

25. ## College Physics

The space probe Deep Space 1 was launched on October 24, 1998. Its mass was 474 kg. The goal of the mission was to test a new kind of engine called an ion propulsion drive. This engine generated only a weak thrust, but it could do so over long periods of

26. ## Physics

What is the period of a wave that travels through a spring at 2.5 m/s and has a wavelength of 1.3 meters?

27. ## physics

Juggles the clown stands on one end of a teeter-totter at rest on the ground. Bangles the clown jumps off a platform 2.5 m above the ground and lands on the other end of the teeter-totter, launching Juggles into the air. Juggles rises to a height of 3.7 m

28. ## Socail Studies

3. Why did Roosevelt become involved in the Panamanian rebellion against Columbia? A. To limit Columbia's power B. To show American might be like Latin America C. To ensure the Panama Canal would be built D. To support freedom and independence I think its

29. ## math

1. In the middle of the page, draw two vertical lines an inch long, an inch apart, and that are parallel to each other. 2. About a half inch below the lines, draw a half-inch horizontal line that is centered between the lines. 3. Draw a line from the

30. ## Physics

A Man Of Mass 80kg Carry A Load Of Bricks Of 20kg Up A Vertical Of Length 6m Calculate The Workdone.

31. ## algebra

Please simplify this expression,if possible. State the excluded values,if any. 5x-5 / 10x^2 -25x + 15. thank you for your time.

32. ## Math

In a triangle ABC,AB=5cm,BC=12cm,angle ABC=90Â°calculate 1)the length of AC. 2)the area of the triangle 3)the length of the perpendicular from B to AC

33. ## Calculus

The end behavior of f(x)=(2+x^2)/(x^2-36) most closely matches which of the following: y=1 y=-1 y=2 y=0 There is no leading coefficient so I am not sure what the answer is.

34. ## Math;);)

Use the vector form of the Law of Cosines to show that |u + v|^2 ≤ (|u| + |v|)^2 holds for any vectors u and v. What does this prove?

35. ## trigonometry

The angles of elevation to an airplane from two points A and B on level ground are 50◦ and 67◦ , respectively. The points A and B are 3.9 miles apart, and the airplane is east of both points in the same vertical plane. Find the altitude of the plane.

36. ## math

Order the numbers from least to greatest: 3/25,0.41,10%

37. ## FAST Angle Help! (Math)

Which value could be the length of the missing side of the triangle? (the side of the triangle has 5, the bottom has a 12 and the top has a X) PLZ I NEED HELP FAST!!!!!!!!!!!!

41. ## Algebra

5x+3y=9x-7y I am having trouble in solving. My answer is ending in fractions. And do far I have gotten y=-1/7

42. ## PRODUCTION OF SODIUM CARBONATE FROM NACL

IS IT POSSIBLE TO PRODUCE SODIUM CARBONATE FROM NAL AND CO2 CARBON DIOXIDE WITH OUT AMMONIA. IS IT POSSIBLE TO USE FOSSIL BASE CO2 INSTED OF CALCIUM CARBONTE AND HCL . THANKS

43. ## Vectors

In triangle OAB, OA = 3i + 4k and OB = i + 2j - 2k. Find OP, where P is the point where the bisector of Angle AOB intersects AB. Answer is 7i/4 + 5j/4 + k/4 Don't use the matrix method as I haven't learnt it yet and please show working. Thx a lot.

44. ## physics

Three forces act on a moving object. One force has a magnitude of 76.5 N and is directed due north. Another has a magnitude of 46.3 N and is directed due west. What must be (a) the magnitude and (b) the direction of the third force, such that the object

45. ## physics

The drawing shows a wire tooth brace used by orthodontists. The top-most tooth is protruding slightly, and the tension in the wire exerts two forces, and , on this tooth in order to bring it back into alignment. If the forces have the same magnitude of

46. ## Math Calc

The radius of a 12 inch right circular cylinder is measured to be 4 inches, but with a possible error of ±0.2 inch. What is the resulting possible error in the volume of the cylinder? Include units in your answer.

74. ## English language arts

Can somebody PLEASE help me with this question urgently? What literary device is used in the STANZA below? it was going to be one of those days jinxed hexed hapless hopeless Choices: a.Onomatopoeia b.Alliteration c.Personification d.Metaphor thank you!!!!

75. ## English

As Principal speaker in your school debate competition, write your arguments for against the motion television is doing more harm than good

76. ## Math parallel lines and angles

1.Find the mesure of

77. ## maths

Gary can get two loan, $12,000 at 8% simple interest for 9 months or a$12000 9- month discounted loan at 7% discount. based on the actual interest paid and the true rate on the discounted loan, which of the two loan offers will Gary choose

78. ## Algebra

In R4 you are given the points P(2,2,2,2), Q(9,−5,1,3), R(6,8,−4,1) (a) Write out all possible arrows which can be formed using the points P,Q,R.

79. ## math

if angle pqr=1 1/2 right angles find the reflex angle pqr

80. ## physics

A fisherman is fishing from a bridge and is using a "43.0-N test line." In other words, the line will sustain a maximum force of 43.0 N without breaking. What is the weight of the heaviest fish that can be pulled up vertically, when the line is reeled in

81. ## Calculus

The radius of a 12 inch right circular cylinder is measured to be 4 inches, but with a possible error of ±0.2 inch. What is the resulting possible error in the volume of the cylinder? Include units in your answer. V = πr²h = 16πr² dV/dr = 32πr dV =

82. ## Calculus

Find the x-coordinates where f '(x) = 0 for f(x) = 2x + sin(2x) in the interval [0, 2π]. MY ANSWERS: x = π/2 x = 3π/2

83. ## Precalculus

Find the magnitude and direction angle θ of the vector. u=4(cos102°i+sin102°j)

84. ## English

Trained technicians respond to all of our calls. The service contract applied to all upgrades. My previous question could you tell me if this is written right.

85. ## Physics

It takes 226 kJ of work to accelerate a car from 23.3 m/s to 28.3 m/s. What is the car's mass?

86. ## Pre Calc - Probability

Let S = {2, 8, 14} be a sample space associated with an experiment. (a) List all events of this experiment. A) {2, 8}, {2, 14}, {8, 14}, {2, 8, 14} B) {2}, {8}, {14}, {2, 8}, {2, 14}, {8, 14} C) {2}, {8}, {14}, {2, 8}, {2, 14}, {8, 14}, {2, 8, D) 14} E)

87. ## accounting

home / study / math / other math / questions and answers / the following tabulation gives earnings per share ... Question: The following tabulation gives earnings per share ... The following tabulation gives earnings per share figures for theFoust Company

88. ## Physics

Two blocks at rest on a frictionless inclined surface with mass of 3kg on a side inclined at 42° to the horizontal and mass 4.8kg a side inclined at 30° to the horizonal. if the two bodies are attached together by an extensible string passed through a

89. ## English

What do you mean by accurate? I'm confused. I have been out of school since the 70's. Thank you!

90. ## Health

1. To eat more healthful and decrease your calorie intake, MyPlate recommends that you eat breakfast, lunch, and dinner with no snacks in between meals. eliminate starchy vegetables like potatoes, corn, and lima beans that are high in carbohydrates. drink

91. ## math

A number X is 3 times greater than the number Y, and Y is 3 times greater than Z. If the sum of Y and Z is equal to 50, what is the value of X? Please show working out, thanks.

92. ## Physics

An object is 10 mters long and has a weight of 125N. The weight of the object is determined by the expression, 250N= a10m+B kg/m. What are the units of a and B

What is debit? ex of debit - debit card and cash

94. ## Calculus

Can you please help me get the solution to this limit without using squeeze theorem and l'hopitals rule lim x to 0 of x^3 sin(1/x) lim x to 0 of x^2 sin^2(1/x)

95. ## Math

The answer to the homework problem is greater than -5. Which rational number must be the number in the second circle?

96. ## Science Fair

For my gr.8 science fair project, I have to come up with a catchy title. My science fair project is on how sugar affects your everyday activities and if it can have a benefit to your productivity. Anyone have an idea for a good title?

The accrual accounting system is a standard system used by most businesses and is also the system used in the simulation. In relation to the rules of accrual accounting, consider the following question: What is being "unaccounted" for?

The radius of a 12 inch right circular cylinder is measured to be 4 inches, but with a possible error of ±0.2 inch. What is the resulting possible error in the volume of the cylinder? Include units in your answer.

99. ## Physics

A 400g soccer ball is moving through the air at 3.57m/s [64.8°W of N] horizontally at the top of its flight. If at that instant, the soccer ball is struck by a 450g crocket ball moving at 5.46m/s [N], and the soccer ball flies off at 4.28m/s[22.4°W of

100. ## algebra

The perimeter of a square is to be at least 15 feet, but not more that 52 feet. Find all possible values for the length of its sides.

evaluate the table and find d/dx [g[f(2x)]] at x=1 f(x) 6,1,6,2 f'(x) 1,2,5,7 g(x) 1,4,4,3 g'(x) 4,5,5,-4

102. ## Calculus

f'(x)=sqrt(x)*sin(x) The first derivative of the function f is given above. If f(0)=0, at which value of x does the function f attain it's minimum value on the closed interval [0,10]? I know the answer is 6.28, but I need steps as to why. Please and thank

103. ## physics

A 89.7-kg skier rides a 3040-m-long lift to the top of a mountain. The lift makes an angle of 14.3 ° with the horizontal. What is the change in the skier's gravitational potential energy?

104. ## Science

A quarterback throws a pass 50 m toward the end zone and it takes 2.8 seco to get there. What is the velocity of the ball in m/s?

105. ## Math

Need help with lession 12 unit 7 find three solutions of the equation y = 9x -4

asked by A Boogie Wit Da Hoodie
106. ## Maths

7i1 + 9i2 = 3 5i1 + 7i2 = 1 where i1 and i2 represent current. Find the values of i1 and i2 using matrices. ? any help thanks

107. ## math

An extension laddder is to be placed against a house so that it reaches 1 ft above the edge of the roof, which is 23.5 ft high. The ladder makes an angle of 70 degrees with the ground. How long must the ladder be? How far is the distance from the house to

108. ## law

1. Mrs. Jones agreed to a surrogate motherhood arrangement in which she would give up the child at birth to Mr. and Mrs. Smith. She was inseminated with Mr. Smith's sperm, and the baby was born on May 5, 2000. The baby was turned over to the Smiths on May

132. ## Math

The average 3rd grade student can read 60 words I 5 minutes. What is the average reading per rate? Write an expressionto represent the problem. Solve the problem

133. ## math

What is the equation of the line that passes through the points (−2, 1) and (1, 10)? 3x − y = −7 3x − y = −5 3x − y = 5 x + 3y = −5

134. ## Math

Four hours after the start of a 600 mile auto race, a driver's velocity is 150 miles per hour as she completes the 352nd lap on a 1.5 mile track a) find the drivers average velocity during the first four hours of the race. b) let f(x) represent the

135. ## English

Hello can someone help me come up with the central theme for sonnet 15 and 27 by Shakespeare and lastly sonnet 27 by Elizabeth Barrett... please and thanks!