# Questions Asked onMay 7, 2018

1. ## Math

The area of a trapezium is 14.7 cm. If the parallel sides are 5.3 cm and 3.1 cm long, find the perpendicular distance between them.

2. ## Algebra problem

Multiply (x-5/4x+8)*(12x^2+32x+16) A. (3x+2)/4(x-5) B. (x-5)(3x+2)/4 C. (x-5)(3x+3) D. (x-5)(12x+8) Please help me solve this problem because all I get is 3x^2-13x-10 (which isn't a choice.)

3. ## Algebra 1

The width (w) of a rectangular pool is x+4. The area (A) of the pool is 2x^3 - 29x + 12. What is an expression for the length of the pool? A. 2x^2 + 8x + 3 B. 2x^2 - 8x - 3 C. 2x^2 - 8x + 3 D. 2x^2 + 8x - 3 I'm not sure please help me with this problem!

4. ## Algebra again

Simplify 5x^3/7x^3+x^4 Is the answer 5/7+x where x is not equal to 0,-7?

5. ## Chemistry

0.22g of a hydrocarbon (compound of C & H) on complete combustion with oxygen gave 0.9 g of water and 0.44g carbon dioxide. Show that these are in accordance with law of conservation of mass.

6. ## math

identify the choice that best completes the statement or answers the question. For questions 1-3, what is the solution of the systems? Use subsitution. 1. y = x + 6 y = 2x

7. ## physics

a tennis ball is served horizontally from 2.4 above the ground at 30 m/s the net is 12 m away and 0.9m high will be clear the net? a. 0.64m b. 1.62m c.2.72m d.none ans is option B .... but how? wanna solution..

8. ## Calculus

1. Express the given integral as the limit of a Riemann sum but do not evaluate: integral[0 to 3]((x^3 - 6x)dx) 2.Use the Fundamental Theorem to evaluate integral[0 to 3]((x^3 - 6x)dx).(Your answer must include the antiderivative.)

9. ## English

Choose the word or group of words that should be enclosed in quotation marks. 1:This Girl is my favorite poem by the poet Sharon Olds. A:This Girl*** B:poem C:Sharon Olds Decide if the quotation marks are used correctly. 2:Ralph Waldo Emerson said, "Keep

10. ## Math

Determine whether the following individual events are overlapping or​ non-overlapping. Then find the probability of the combined event. Getting a sum of either 4​, 9​, or 10 on a roll of two dice

11. ## algebra

The circle has a circumference of 50.24. Using 3.14 to approximate piâ€‹, find the value of x. â€ƒâ€ƒâ€ƒâ€ƒâ€ƒâ€ƒA circle with a radius labeled x plus 3. x + 3

12. ## Calculus

Using 4 equal-width intervals, show that the trapezoidal rule is the average of the upper and lower sum estimates for the integral from 0 to 2 of x squared, dx .

13. ## Math

Sharon is moving up to the attic and wants to paint one wall blue. The wall is a triangle with a base of 16 feet and a height of 13. What is the area of the wall to be painted? (1 point) A: 10.4 ft B: 52 ft******* C: 104 ft D: 208 ft. Help meeeeeee!!!!

14. ## Math

A business finds that it has to increase its staff by 5% each year due to growth. After how many years would the size of their staff double?

15. ## Physics

What is the gauge pressure if the absolute pressure is 400 kPa?

16. ## Vectors

If u and v are both unit vectors that make an angle of 60 degrees to each other, calculate a) |2u+3v| b) |4u-5v| The answer key says the correct answer for a) is 4.71 and the correct answer for b) is 3.22. a)|2u+3v|^2=|2|^2+|3|^2-2|2||3|cos(60)=7;

17. ## Physics

What is the absolute pressure if the gauge pressure is 100 kPa?

18. ## history

What is the main reason many people stop working on farms in Mexico.

19. ## Social studies

How did the arrival of English-speaking white settlers change life for the Mexicanos in the Southwest?

20. ## Calculus

For Questions 1–2, use the differential equation given by dy/dx = xy/3, y > 0. 1. Complete the table of values x -1 -1 -1 0 0 0 1 1 1 y 1 2 3 1 2 3 1 2 3 dy/dx 2. Find the particular solution y = f(x) to the given differential equation with the initial

21. ## math

when a barrel is 1/5 full it holds 16 litres.how many litres will it hold when 1/2 full

22. ## physics

When resistors are connected in series . . . Is their equivalent resistance smaller or larger than the individual resistances? Is the current through them when connected together larger or smaller than their current if alone in the circuit?

23. ## math

what is 07.05 as a 12hour clock

24. ## Physics

A car travels over a hill at a constant speed as shown in the diagram below. The car’s speed is 12.1 m/s, its mass is 1621 kg, the radius of the hill is 29 meters, and the force of friction is 201.6 N. The gravitational field of the earth is 10N/Kg.

25. ## Algebra

How can you write the expression with a rationalized denominator? 3sqrt 2/3 sqrt 6 A) 3sqrt9/3*** B) 2+3sqrt9/6 C) 3sqrt9/6 D) 3sqrt72/3 Let f(x)=x^2+7 and g(x)=x+3/x. find (g*f)(-5) A) 35/12 B) 35/32 C) 32/35 D) 11/25*** Please correct me if I’m wrong

26. ## PA government

How would your chosen bill move through the legislative process in the Pennsylvania General Assembly? 2. What type of tax could the state propose to help fund the bill you selected? ( I have chosen the bill HB429. could you please help me answer these

wish is to wish as goal is to?

28. ## Physics

Water ripples are caused to travel across the surface of a shallow tank by means of a suitable straight vibration.the distance between successive crest is 4.0cm and the wave travel 30cm in 1.5sec.calculate the wave length and velocity of the waves and the

29. ## Physics

What is the absolute pressure if the gauge pressure is 3.2 atm?

30. ## Chemistry

A weak acid with an initial pH of 3.2 was titrated with a strong base. 15 mL of 0.1 M NaOH was added to the acid to reach the equivalence point at a pH of 8.6. What would you expect the approximate pH of the analyte to be after the first 5 mL of 0.1 M NaOH

31. ## economics

im stuck how does the government promote economic goals? i know the goals are efficiency, freedom, security, equity and growth

32. ## math

7 nails have a mass of 50 g.How many nails have a mass of 1/2 a kg please?

33. ## Science

Chef Walt is an excellent cook. He works in a very busy restaurant. He cooks for 100's of people each night. Why would Chef Walt use a copper pot instead of an aluminum pot? A) The aluminum pot probably holds less food than the copper pot. B) The copper

34. ## Math

Amy wants to travel from elm town to lakeside at an average speed of 50 miles per hour. She travels half the distance and finds out her average speed has been on 25 miles per hour. How fast must she drive for the rest of the trip to average 50 miles per H

35. ## physics

When resistors are connected in parallel . . . Is the combined resistance smaller or larger than the individual resistances? Is the total current through the circuit larger or smaller than the total current if there were one resistor alone in the circuit?

36. ## Algebra

With this height and weight formula how can I explain the answer. W=5h - 190

37. ## economics

what are the benefits of natural monopolies? would it be research and development?

38. ## physics

A 13.7 N force is sufficient to keep an object moving in a circle of radius 15.4 meters. How much force in Newtons is needed to keep it moving with the same speed in a circle of 26.5 meters?

39. ## physics

A 14.5 kg toy car is driving around a horizontal circular track with a period of 8.0 seconds. The radius of the circular track is 1.1 meters. What is the force of friction in Newtons between the car and the track that is necessary for the car to remain on

40. ## Physics

What is the gauge pressure at the bottom of a pool 1.9 m deep?

41. ## english

which line in Julius Caesar indicates that Cassius is a manipulator?

42. ## physics

A car, with a mass of 2022 kg, is making a circular turn in a roundabout in Coralville. The radius of the circle is 19 meters and it takes 26.7 seconds to get halfway around the turn (circle). Calculate the Fnet of Friction, in Newtons, that is allowing

43. ## Math

Ann started reading at 4:00 and finished at 4:20 through what fraction of a circle did the minute hand turn

44. ## Physics

A charge Q = -610 NC (-6.1 × 10^-7 C) is uniformly distributed on a ring of 2.4-m radius. A point charge q = +480 nC (+4.8 × 10^-7 C) is fixed at the center of the ring, as shown in the figure. An electron is projected from infinity toward the ring along

45. ## Physics

A diver can withstand a maximum pressure of 3x10^5 Pa. What maximum depth can he reach in seawater?

46. ## Geography

How Does irrigation negatively affect farmland

47. ## social studies

why do the shiites believe that uyyades should not be in power

48. ## chem

how many moles of Br are in 7.34g IBr3? Plz explain how to do this step by step

49. ## phyiscs

A 14.5 kg toy car is driving around a horizontal circular track with a period of 8.0 seconds. The radius of the circular track is 1.1 meters. What is the force of friction in Newtons between the car and the track that is necessary for the car to remain on

50. ## Algebra

Simplify x/6x-x^2 I know that the answer is 1/6-x but the answers look like this: A. 1/6-x where x is not equal to 0,6 B. 1/6-x where x is not equal to 6 Please help me with understand why is says x is not equal to, I have like 5 problems just like this so

51. ## Math

1. Simplify the radical Sqr of 3c² over the sqr of 27 √ ̅3c² --------- √ ̅27 2. Simplify the radical √27 ∙ √3 3. Simplify the radical √ ̅75 - 4√ ̅75 4. Simplify the radical (√3 + √2)²

52. ## Physics

A driving bell can withstand a maximum pressure of 2.5 x 10^6 Pa. What maximum depth can the ball reach in seawater?

53. ## Math

On a blueprint the length of the incline of a ramp is 13 cm long. How long is the ramp at full scale factor for the blueprint is 1/32?

54. ## Physics

How would electrical current be affected if the time interval over which a charge passes through an area increases while the amount of charge Remains the Same

55. ## physics

A purple beam is hinged to a wall to hold up a blue sign. The beam has a mass of mb = 6.9 kg and the sign has a mass of ms = 15.3 kg. The length of the beam is L = 2.55 m. The sign is attached at the very end of the beam, but the horizontal wire holding up

56. ## Zoology

State the law of constant proportion and give one example? Ans-A chemical compound is always found to be made up of the same elements combined together in fixed proportion by mass. For ex-CaCO3----->CaO+CO2^

57. ## Maths

y1+x2=90 solve

58. ## Math

The force on an object is F =−21j . For the vector v =4i −j , find: a) The component of F parallel to v : (b) The component of F perpendicular to v :

59. ## chemistry

What's the net ionic equation for the reaction: PH3(g) + O2(g) → P2O5(s) + H2O(g)? Please go step by step:)

Simplify 4!

61. ## Civics

What biases are present n the movie Bowling for colombine?

62. ## Social Studies

Explain the term Green Revolution, and describe both its intended and unintended outcomes. (Give at least two intended outcomes and two unintended outcomes.)

63. ## Chemistry

What's the net ionic equation for the reaction: PH3(g) + O2(g) → P2O5(s) + H2O(g)? Please show your work so I can follow Thanks!!

64. ## math

A number cube is rolled. What is P(3 or an even number) A: 1/2 B: 2/3 C:4/2 D: 1/6

65. ## Math

For what value of x are 16i-12j+4k and xi-(x-1)j+k parallel?

66. ## Social studies

What were the goals of the populist Party?

67. ## Physics

A 10.6 N force is sufficient to keep a 15 kg mass moving in a circle. How much force in Newtons is needed to keep a 10.7 kg mass moving with the same speed in a circle of the same radius?

68. ## Math

You are designing a large rectangular fish tank for your tropical fish. The length will be 1 yard 3 inches, the width will be 1.5 feet, and the height will be 20 inches. Find the volume of the fish tank in cubic inches

69. ## Math & science?

New York's 300 m high Citicorp Tower oscillates in the wind with a period of 6.80 s. Calculate its frequency of vibration.

70. ## Physics

What is the absolute pressure 2.5 m below sea surface?

71. ## Physics

What is the gauge pressure if the absolute pressure is 321 atm?

72. ## Maths

Integration of sine square theta from 0 to 2pi

73. ## Physics

What is the absolute pressure 1.8 m below the surface of a lake?

74. ## Chemistry

What is the pH of a 0.085 M solution of nitrous acid (HNO2) that has a Ka of 4.5 × 10^-4? 2.21 5.33 3.35 4.42 I am not the best at working through the problems, but I came to A, 2.21, given the concentration and Ka.

75. ## english

Which quotes in Julius Caesar shows that Cassius killed Caesar out of jealousy?

76. ## Math

The force on an object is F =−21j . For the vector v =4i −j , find: (a) The component of F parallel to v : (b) The component of F perpendicular to v :

77. ## Science

How to determine for an empirical formula?

78. ## Math

A=0,4 ,B=-2,0 Find the vector AB in ℝ2?

79. ## Geography

what is the longitude of a town "Y" whose time is 1:00pm when Greenwich mean time is 5:00am ?

80. ## German

Der Mann … A. bist alt. B. sind Alt. C. sieht alt aus. D. seht Alt aus.