# Questions Asked onMarch 23, 2017

1. ## Chemistry

In which of the following reactions is work done by the system to the surroundings? A) 2CH3OH(l) + 3O2(g) --> 4H2O(l) + 2CO2(g) B) S(s, rhombic) + O2(g) --> SO2(g) C) 2AgNO3(s) --> 2AgNO2(s) + O2(g) D)4Fe(s) + 3O2(g) --> 2Fe2O3(s) My guess is B because

2. ## Physics

Two point charges that have charge values of 4.0 X 10^-6 C and -8.0 X 10^-6 C, respectively, are separated by 2.4 X 10^-2 m. What is the mutual force between them, given that kC = 8.99 X 10^9 Nm^2/C^2? I got the Felectric as -5.0 X 10^2 N, but I'm not sure

3. ## Math 120

A box contains 10 ​transistors,4 of which are defective. If 4 are selected at​ random, find the probability that a. All are defective. b. None are defective.

4. ## Math

A rectangular piece of cardboard measuring 12 cm by 18 cm is to be made into a box with an open top by cutting equal size squares from each corner and folding up the sides. Let x represent the length of a side of each square in centimetres. a. Give the

5. ## Math

A fair coin is tossed two times in succession. The set of equally likely outcomes is {HH, HT, TH, TT}. Find the probability of getting exactly one head. The probability of getting one head

6. ## calculus

(ln(x))^2 dx, integrate.

7. ## Chem

Your spaceship has docked at a space station above Mars. The temperature inside the space station is a carefully controlled 24 ∘C at a pressure of 745 mmHg. A balloon with a volume of 414 mL drifts into the airlock where the temperature is -95 ∘C and

8. ## math

A river flows at the speed of v from west to east. How should a man who is at a point A of the southern bank of the river, which is d meters away from the river, and wants to reach a point B on the northern bank of the river, which is 2d meters away from

9. ## Math

Carol has 8 3/4 yards of material. She needs to use 1/3 of the material to make a dress. How many yards of material will she need to make the dress?

10. ## Math

Complete the function table and write the function rule. Input (x) -------------- | 32 | 20 | |-------|-------| | 14 | 2 | |-------|-------| | ? | -6 | |-------|-------| | -2 | -14 | |-------|-------| | -10 | ? | ----------------- Please help I am

11. ## psychology

I need a topic that is minimum risk and ethical that the goal is to examine the effects of the independent variable on the dependent variable

12. ## Maths

£4000 is invested at 1.5% compound interest. Show that the value of the investment after 2 years is £4120.90. Thanks to anyone who can help.

13. ## Algebra

Translate this sentence into an equation. The sum of 11 and Julie's age is 60 Use the variable j to represent Julie's age.

14. ## psychology

I'm needing a research topic for proposal that has minimum risk to participates and can be experimented. please help

15. ## GEOMETRY

Erica made a poster in the shape of a quadrilateral that has only one pair of parallel sides. Which of the following names the shape of Erica's poster? A.square B.rhombus C.rectangle D.trapizoid

16. ## Environmental Science

How is genetic engineering similar to traditional plant breeding? A) Both processes are used to produce desirable traits in crop plants. B) Both processes involve only allowing certain individuals to breed in a population to enhance passing of certain

17. ## Math

1. Graph the points A ( -5,0) B ( -4, 3) and C ( 0, -4) A B C D 2. Identify the quadrant in which (3, -6) lies A II B IV C I D III 3. Determine which ordered pair is a solution of y = 2x - 3 A ( -2, 7) B ( 0, 3) C ( -4, -11 D ( 5, -7 5. Graph the linear

18. ## Math

WHICH KIND OF FUNCTION BEST MODELS DATA IN THE TABLE 0 -1,1 -0.5, 2 0, 3 0.5,4 1 I'm thinking quadratic because they are constant 0 1.7,1 6.8,2,27.2,3 108.8, 4 435.2 total confused here the x = 1 but the y's have no real sequence linear no quadratic no

19. ## calculus

evaluate the integral. from 0 to 4π t^2 sin(2t) dt

20. ## Physis

F1d1= f2d2. 0.2×40=xg×0.8 xg=0.2×40\0.8. Xg=0.08\0.8

21. ## Chemistry

8) ( 1 point) What is the maximum number of grams PH₃ that can be formed when 3.4 g of phosphorus reacts with 4 grams of hydrogen to form PH₃? P₄ (g) +6H₂ (g) → 4PH₃ (g) * 3.7 g 6.8 g 45 g 270 g 10. Lead nitrate can be decomposed by heating.

22. ## Math

Sharon runs on a trail that is 8 1/2 miles long. She ran 1/3 of the trail and walked the rest of the way. How far did she run?

23. ## Physical science

Calculate the mass of carbon monoxide that was needed to produce 78 grams of methanol by the following reaction: 2H2+CO=CH3OH

24. ## math

The box and whisker plot below shows the numbers of text messages received in one day by students in the seventh and eighth grades at Lincoln Middle School.

25. ## english

The_________are meeting at the White House. I can't figure out how to use Chief of Staff in the above sentence.

26. ## math

(sinx)^(1/2)=cosx x is between 0 and 90 What is sinx

since i cant put this picture on here what is the area of a trapezoid with this on it 8 cm, 5 cm, 4 cm,6 cm and 11 cm??

asked by Young Trippy Lil G
28. ## P.E 2

brief history of pandanggo sa ilaw

asked by Gellie ann mae cata
29. ## Chemistry

Calculate the enthalpy of formation if 78.5 g of carbon dioxide in the following reaction: C(s) + H2O(g) --> CO2(g) Use the following equations: a) H2O(l) --> H2(g) + (1/2)O2(g): Δ°f = +285.8 kJ/mol b) C2H6(g) --> 2C(s) + 3H2(g): Δ°f = +84.7 kJ/mol c)

30. ## physics

four point charges on corners of a square.. top left -1, top right +2, bottom left -2, bottom right -1 ... object in middle is -1 ... which direction will that object move? up, down, left, or right (no angles)

31. ## science

Two copper globes are floating in space with a charge of -10 and charge of +16. They come together then go back apart. What are the resulting charges

32. ## Physics

A blue billiard ball with mass m crashes into a red billiard ball with the same mass that is at rest. The collision results in the blue billiard ball travelling with a velocity of v and the red billiard ball with a velocity of 3V. In terms of v and m

33. ## physic

a body is projected horizontally with a velocity of 20m/s from height of a tower 160m above the ground calculate the time of flight distance from the foot of the tower to where the object land

34. ## Calculus

Find the inflection points and where the function is concave up and concave down: f(x)=x/(x+x^2)

35. ## Chemistry

When .1625 g of Magnesium is burned in a bomb container that has a heat capacity of 3.03 kJ/ºC, the temperature increases by 1.252 ºC. How much heat (kJ/mol) is liberated during the burning of magnesium? Just want to make sure I am doing this correctly:

36. ## Math1

There are 5 pencils in each box how many pencils are in 85 boxes

37. ## SCIENCE

WHAT IS MEAN OF CHEMISTRY?

38. ## US History

6) One major trend that began during WWII and continued after was: a) The relocation of manufacturing and the defense industry to the west. b) The entry of women into the workforce. c) The use of women in combat roles. d) A decline in the number of union

39. ## math

jeb earns \$8 per hour. He gets a raise of 3.5%. How much is his raise?

40. ## physics

Two small balls are attached to a rigid rod of mass 2.2 kg that is 6.0 m in length. The first ball has a mass of 2.25 kg and the second ball has a mass of 4.95 kg. (c) What is the moment of inertia of the rod when it spins around its center of mass?

41. ## Language Arts

Question: Poets use imagery and words with different connotations and denotations. In a paragraph, define and provide an example of imagery, connotation, and denotation. Then, explain how poets use these elements to contribute to tone in a poem. Support

42. ## Math

If x is between 0 and 90 what is sin x if sinx^(1/2)=cosx. How can I do it without a calculator??

43. ## health

what are nuts

44. ## Trig

Find the area of a triangle whose vertices are A(0,2), B (2,7), C (0,10).

45. ## Math

Ellen's carton is 3/7 full. Fern's carton is 3/10 full. Kyle's carton is 3/4 full Who has the least amount left in their carton?

46. ## US History UGGGH

Sorry another question I am struggling with finding information in my text and on the web. Some things I am reading seem to be that the answer is d, all of the above. I know that Stalin wanted forces on the East front, but the Allies said it wasn't

47. ## social studies

outline two reason why emotional readiness is necessary for good parenting

48. ## Politics

Why would theorists and policymakers from different regions potentially approach IPE differently from one another? Any thoughts? It is said that Marxism is very common in developing countries. In the developed world, we are seeing the protectionism

49. ## MATH: Check my answers | HELP ASAP!!

A parking lot space is in the sape of a retangle. if the space has a length of 23 ft and a width of 12 ft, what is the area of the parking lot? A.128 ft B.266 ft C.276 ft######### D.138 ft Check my answer please! I think I'm right.

50. ## Algebra 2

On a cold winter night, Anna makes a cup of hot cocoa. When she takes the first sip, she realizes that the cocoa is too hot to drink. She drops a thermometer into the cup and discovers that the cocoa is 170° F. After 20 minutes, she tries again and the

51. ## chem

Air trapped in a cylinder fitted with a piston occupies 162.2 mL at 1.08 atm pressure. What is the new volume when the piston is depressed, increasing the pressure by 25%?

52. ## Math

The point C(-3,1) is translated to the left 4 units and up 1 unit. Write the rule for this translation. What are the coordinates? (x,y)-> (x+4,y+1);(7,-2) That is my answer. Am I right?

53. ## angular accleration

a wheel if a vehical rotates uniformly at the rate if 120 rotations per mint suddenly it goes faster and reaches 150 rotations per mint after 30s find the angular acc

54. ## Science

The development of the amniotic egg made early reptiles less dependent on water? True False

55. ## Math

3X+Y-11 and -2X+Y=1 X= Y=

56. ## chem

The pressure of a sample of helium in a 3.35 L container is 0.988 atm. What is the new pressure if the sample is placed in a 2.94 L container?

57. ## chemistry

A fixed amount of oxygen gas is held in a .500 L tank at a pressure of 4.68 atm. The tank is connected to an empty 1.50 L tank by a tube with a valve. After this valve has been opened and the oxygen is allowed to flow freely between the two tanks at a

58. ## angular accleration

the ratio of the dimention of linear acc to angular acc is

59. ## Math

2X-3Y=-24 and X+6Y=18 X= Y=

60. ## angular accleration

a body starts rotating from rest at the rate of 6 rotations per/ secsquare after 8 secs how many rotations will it complete?

61. ## science

Sodium nitrite is prepared by a reaction of sodium nitrate and carbon: NaNO3 + C → NaNO2 + CO2 Calculate the masses of reactants needed for the preparation of 10 g of NaNO2. Carbon is used in 10% excess. The atomic/molecular masses are: NaNO2= 69.0 g/mol

62. ## angular accleration

a boy is sitting on a rotating table he shakes hand with his mother 5 times a mint. she is standing at the side of rotating table. how long will he take to shake hand 50 times

63. ## angular accleration

a fan starts rotating from rest, when it complete 50 rotations its rate of rotation is 10 rotations/sec. what is the angular acc of it

64. ## Math

in 2016, you purchased a new car for \$20,000. The value of the car depreciates at a rate of 18% per year. The value V of the car after t years is given by the function V(t)=20000(0.82)t. When will the car be worth three-quarters of its original value?

65. ## Physics

A half pipe can be thought of as half of a cylinder with radius of 7.00m. If a skater with mass 75.0 kg, starts with an initial velocity of 5.00 m/s at the top of the ramp, (a), what is his velocity at the very bottom of the ramp? The skater then

66. ## English

Before class project on workplace diversity was due, the class submitted its their it his or her

67. ## Physical science

Determine the number of moles of sodium hydroxide produced when 2 moles of sodium and 3 moles of water react to form sodium hydroxide and hydrogen gas.

68. ## Math

DJ was thinking of a number. He said it had 2 digits, it ended in 5, and the number in the tens place was a 4. What number was he thinking of?

69. ## Math

A bank account was opened with a deposit of \$2750 at an APR of 3.5% compounded one of the following ways. Find the amount in this account after 6 years with compounding of: (round answers to nearest 100th) annually: \$ semi-annually: \$ quarterly: \$ monthly:

70. ## History

What did satraps do? A) protest against secular government B) run provinces on the Persian Empire C) teach Muslim children about their faith D) force Armenians from their homes

71. ## Math

Six neighbors share four pies equally how much of pie does each neighbor get

72. ## math

solve by substitution: addition, subtraction or multiplication. 3X+Y-11 and -2X+Y=1 X= Y=

73. ## Probability

After an exam, a teacher starts checking student attempts. Based on the marks he gives, he also awards a letter grade from any of the 5 letter grades; A, B, C, D, and F. How many papers on average should he expect to check to see all 5 grades awarded? At

74. ## chem

A weather balloon is filled with helium that occupies a volume of 4.33 104 L at 0.995 atm and 32.0°C. After it is released, it rises to a location where the pressure is 0.720 atm and the temperature is -10.2°C. What is the volume of the balloon at that

75. ## angular accleration

a fan starts rotating from rest, when it complete 50 rotations its rate of rotation is 10 rotations/sec. what is the angular acc of it

76. ## Science I guess

So I have been reading the twilight series and I would like to know are you team Jacob or team Edward please bee nice (:

77. ## physics

Consider the directions of the velocity and the acceleration vectors of an object in uniform circular motion. A. Both vectors point away from the center. B. The velocity points along the tangent, and the acceleration is zero, since the speed is constant.

78. ## AP physics (answer whatever you can)

how do you find the Fnet of 3 planets? do i find the forces of all the planets on each other and add it up? what if teh planets are at an angled position? 1000 kg car is going clockwise around a curve iwth radius of 30m. coefficient of frction=0.5 if the

79. ## Math

Fined the quotient

80. ## Math

Solve by substitution :addition, substration or multiplication 2X+2Y=-2 and 3X-2Y=12 X= Y=

81. ## Math

Solve by substitution :addition, substration or multiplication 4X+3Y=19 and 6X+3Y=33 X= Y=

82. ## Algebra 2

Describe an infinite geometric series with a beginning value of 2 that converges to 10. What are the first 4 terms of the series? Last question and my mind is fried, can someone please help me? Thanks

83. ## math

Sins=335sin59°÷x

84. ## Math

If the hypotenuse of a right triangle is a=3cm, so A=90 degrees, and the square of the sum of the other two sides is 17, what is the area of the triangle? so basically, (b+c)^2=17 I think you are supposed to use trigonometry to solve it but I don't know

85. ## Math

Solve by substitution :addition, substration or multiplication 2X+10Y=2 and 3X-5Y=-17 X= Y=

86. ## Math

Find the three rational number of 5 and -2

87. ## biology 30

suppose that sample of beef broth initially contains 16 bacterial cells. after 4.0 h, there are 1.6 x 106 bacterial cells in the sample. calculate the growth rate of the bacterial population for the given time interval. (record your answer in scientific

(-18)-(+11)=

89. ## Math 120

In how many different ways (counting the orders) can the San Diego Chargers score exactly 10 points in a football game? Points are scored as follows: A safety scores 2 points, a conversion scores 2 points, a field goal 3 points, a touch down 6 points, and

90. ## Pre-calculus

Parabola x^2+10x+4y29=0 in standard form

91. ## Environmental Science

Which term is used to describe when genes are transferred from one species of crop plant to another to produce desirable traits such as pest resistance? A) Selective breeding B) Genetic engineering I think the answer is A

92. ## Math

I NEED TO KNOW HOW TO DO THE WORK FOR THIS QUESTION!!!!!!!!!!!!!!!!!!! Find the length of each side(triangle) first side-x second side-x+2 third side-x+3 Perimeter=35m "answer = 10m, 12m, 13m" ^^^^how do you get this???

93. ## Pre-cac

Find a such that f(x)= ax^2-3x+5 has a maximum value of 15. I'm stuck because how am I suppose to complete the square? 3/2= 1.5? then square 1.5? So lost.

94. ## P.E 2

brief history of singkil

asked by Gellie ann mae cata
95. ## Math1

You buy a new computer for \$2100. The computer is decreases by 5% annually. When will the computer have a value of \$600? Y = a(1+r/n)^n(t)

96. ## P.E 2

brief history of tinikling

asked by Gellie ann mae cata
97. ## Maths

Before an election, 23% said they would vote for A 9% said they would vote for B 20% said they would not vote. These all voted as they said. The rest of the population voted for A and B in the ratio 1:2 Who got the most votes? Thanks to anyone who can

98. ## P.E 2

brief history of maglalatik

asked by Gellie ann mae cata
99. ## P.E 2

brief history of cariñosa

asked by Gellie ann mae cata
100. ## Maths

Last season a football club sold 8000 season tickets at £250 each. This season the season ticket price is reduced by 20% to £200. If the club sell 20% more tickets will the amount of money they receive increase, decrease or stay the same?

101. ## Maths

Harry is tiling a wall of area 25m squared. A tub contains 15kg of tile cement. The instructions say 2kg of tile cement will tile 1m squared of wall. How many tubs does Harry need to buy?

102. ## Math

A sports reportor said that 2 out of every 3 people at a home town base ball game named baseball vs their favorite sport the reporter claimed that baseball was the mostpopular sport in town which of th following explains why the reporters might not be true

(-9)-(+21)=

104. ## Math

Given that x²cos y-sin y=0 ,(0,π): a)verfiy that given point is on the curve. b)use implicit differentiation to find the slope of the above curve at the given point. c)find the equation for tangent and normal to the curve at that point.

105. ## ELA

In "How Beaver Stole," what changes to the land does Beaver cause when he runs away with fire?

106. ## English

In my speaking exam I want to talk about why children should have mobile phones? But is there many facts about this or should i be against it?

107. ## English

1. Sure. Here, take a look. 2. It's a picture of rocks, right? 3. Not only rocks, Tom! Look closer. There are eggs. 4. Wow, I can't believe it. --------------------------- Q1: What is the full form of "Not only rocks'? a or b? a. They are not only rocks.

108. ## geometry

The foot of a 25-foot ladder is 15 feet from a wall. If the ladder is pushed until its foot is only 7 feet from the wall, how much farther up the wall is the ladder pushed?

109. ## early childhood

At what age do children usually engage in exciting, danger-packed themes in dramatic play

110. ## Language Arts 8B

I just need to know if my answers are right or wrong. Thanks! 1. Which of the following is the best definition of stage directions? A. notes on how to write a story B. notes on how the work is to be staged and preformed C. notes on how to place props and

111. ## Social Studies Help!!

1, what was the main purpose Roosevelt made in the 1932 election that helped him win? He promised to reorganize the economy He promised to help the jobless, poor farmers,and elderly ******* He promised to regulate big banks more heavily to prevent another

asked by Hey I need help!
112. ## Math

Matthew drew a building to scale so that 2.7 inches represented 81 feet. How many feet would 2.8 inches represent?

113. ## Maths

In a gp fifth is 4 times the 3rd term and sum of first two terms is -4. Find the terms of gp

114. ## physics

A typical magnitude of the external magnetic field in a cardiac catheter ablation procedure using remote magnetic navigation is B = 0.080 T. Suppose that the permanent magnet in the catheter used in the procedure is inside the left atrium of the heart and

115. ## Math

If there are 12 green pencils, 4 red pencils, 7 blue pencils, and 2 black pencils, what is the chance of picking a red pencil at random?

116. ## Chemistry

A solution is prepared by pipetting 5.00 mL of 0.0983 molar HCl into a 100.0 mL graduated cylinder, and adding enough water to prepare 50.0 mL of solution. 1.The concentration of this solution is ____________M 2.The pH of this solution is ____________

A towns' population, P(x), is given by the function P(x) =2700x + 21000 where x represents the years since 2003. The population will reach 83,400 in ______ The population in 2010 will be ______

118. ## Help please I am lost, algebra

I have notes on this from online but they are different from this problem and I don't know how to solve it. Find the equation of a line with the given information: slope -5/4 and g(14)=-6 It is asking for, point slope form, slope intercept form, Function

119. ## math

find 4 numbers that 5 divide into equaly

120. ## math

A thrill ride at an amusement park holds a maximum of 12 perople per ride. write and solve an inequality to find the least number of rides needed for 15,000 people. Do you think it is possible for 15,000 people to ride the thrill ride in 1 day? explain

121. ## science

A marble at rest is dropped from the top of a building. Find the marble’s velocity after it has fallen for 3 s. Ignore air resistance. Use the formula: v = g x t, where v = average velocity, g = acceleration due to gravity and t = time

122. ## Physics

A 2.5kg block is on 53° inclined plane for which coefficient of kinetic friction is 0.25 and coefficient of static friction is 0.5. Calculate its acceleration given that: (a)it is intially at rest (b)it is moving up the slope

123. ## english

true or false: william shakespeare followed the elizabethan structure of a four act play

124. ## physics

the potential energy of a spring..when stretched by 4 cm is u..when stretched by 20 cm it will ?

125. ## Trig

Find the area of quadrilateral whose verties are A(0,2), B(2,7), C(6,10), and D (9,-2).

126. ## Math

6 friends share 5 apples equally. How much apple does each friend have?

127. ## Calculus - Newton's Method

Use the Newton's Method to approximate the real root of the equation: f(x)=x-2+cosx=0 a) What is the iterative equation of Newton's method of the given equation? b) Iterate the equation with starting point x1=5 until you get a repetition of the four digits

The distance between mountianview and crowntop is 6.5 inches on a map. if the scale on the map is 1 inch= 25 miles what is the actual distance between the two towns i have the correct answer it is 162.5 miles the etcher gave us this answer but how would i

asked by Young Trippy Lil G
129. ## English

How are you doing? I'm fine. I'm okay. I﻿'m good. I'm great. I'm doing fine. I'm doing okay. I'm doing good. I'm doing great. ---------------------- Are the answers all fine? ============================== How is it going? 1. I'm terrible. 2. I'm not so

130. ## Science

If a 1 tonne car travels at 16.7 m/s (60km/h) then it would have a momentum of

131. ## ELA

Can someone give me examples of analogies in O Captain! my Captain and The road not taken or at least help me find them so that I can myself compare and contrast the use of analogies in both of these poems Thanks in advance

132. ## Maths

(1+a+b+c)(1+ 1/a +1/b +1/c )= 16 then find a+b+c. Show the method