# Questions Asked onOctober 15, 2017

1. ## math

A fireplace arch is to be constructed in form of a semiellipse. The opening is to have a height of 2 feet at the center and a width of 6 feet along the base. The contractor cuts a string of a certain length and nails each end of the string along the base

2. ## History

What was the reasoning and result of the Saint Bartholomew’s Day massacre? the society of Jesus burned Gordon Bruno at the stake for his belief in a sun-centered solar system protestant William dowsing accused 100 women of being witches, and they were

3. ## History

What was an outcome of the Council of Trent? the council of Trent stopped the selling of indulgences the council of Trent abolished the practice of the seven sacraments the council of Trent eliminated the practice of the Eucharist the council of Trent

4. ## Chemistry

What would the net ionic equation be for : HBr (aq) + KOH (aq) = KBr + H2O

5. ## Physics

Excellent human jumpers can leap straight up to a height of 100 cm off the ground. To reach this height, with what speed would a person need to leave the ground?

6. ## math

1 - (sin^2x / 1+cosx) = cosx

7. ## Mathematics

Natalie's car used 7 gallons of gas to drive 161 miles. At what rate does her car use gas in gallons per mile? Express your answer in simplest form.

8. ## Physics

When striking, the pike, a predatory fish, can accelerate from rest to a speed of 3.6 m/s in 0.11 s . Distance?

9. ## Physics

A physics major is working to pay his college tuition by performing in a traveling carnival. He rides a motorcycle inside a hollow transparent plastic sphere. After gaining sufficient speed, he travels in a vertical circle with a radius of 11.8 m . The

10. ## Chemistry

You have a solution of 0.500 M NaCl. If you add an equal amount of water to this solution, doubling the volume, what is the concentration of this solution?

11. ## math

A Dish TV satellite dish is the shape of a paraboloid. The dish is 36 inches wide, and 8 inches deep. How many inches should the receiver be located from the vertex for optimal reception? (round to the nearest thousandth)

12. ## Algebra2

Use the formula D=rt where D is distance, r is rate, and t is time. The distance is 40 Julio finishes the 40 yd dash in 4.39 seconds. Rich finishes it at 6.18 seconds 1. Solve D=rt for rate. (1 pt) D/t=r 2. Use the statistics given in Act Two and your

13. ## Social Studies

Why did many Americans feel that the result of the 1824 election was fraudulent? (1 point) New laws were enacted requiring voting men to own property, so many lost their right to vote; this resulted in a very low turnout of voters.Because no one received a

14. ## ELA

Which of these sentences uses possessive nouns correctly? A. The two brothers’ invention was a children’s game; each player’s marker was an animal. B. The two brother’s invention was a childrens’ game; each player’s marker was an animal. C. The

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15. ## science

Find by drawing the resultant of two vectors 3 unit and 4 unit inclined to each other at 30 degree, 4 degree and 90 degrees.

16. ## Physics

In an 8.00 km race, one runner runs at a steady 12.0 km/h and another runs at 14.6 km/h

17. ## Calculus II

Hi, I can't seem to find out how to do this. My textbook has two Q(t) values in the example and I don't know how to interpret this problem. An institute finds that the average student taking Elementary Machine Shorthand will progress at a rate given by

18. ## physics

15. During the opening kickoff of a college football game, the kicker kicks a football with an initial velocity of 27.5 m/s at an angle of 41° above horizontal. I. What is the time of flight for the ball? II. How far does it travel before hitting the

19. ## Physics

A person pushes on a 62-kg refrigerator with a horizontal force of -280 N; the minus sign indicates that the force points in the -x direction. The coefficient of static friction is 0.70. (a) If the refrigerator does not move, what are the magnitude and

20. ## physics

Traveling at a speed of 18.0 m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. The coefficient of kinetic friction between the tires and the road is 0.690. What is the speed of the automobile after 1.29 s have elapsed?

21. ## chemistry

Consider the reaction 2 Al2O3(s) → 4 Al(s) + 3 O2(g). ∆H = +3339.6 kJ/mol What is the change in heat when 0.455 L of a 3.60 M Al solution reacts with excess O2 ? 1. -21,962 kJ 2. -2735 kJ 3. -1368 kJ 4. -26,521 kJ 5. -685 kJ 6. -5477 kJ 7. -424 kJ 8.

22. ## Math

The prime factorsof a number are the first four prime numbers. No factor is repeated. What is the number?

23. ## Organic Chemistry

Procedure: 1) Accurately weigh approximately 0.40 g of Dimethyl maleate into a 50 mL round bottom flask that possesses a ground glass joint, and record the weight. 2) Dissolve the Dimethyl maleate in 10 mL of methanol, and add approximately 5 drops of 10%

24. ## Chemistry

Potassium superoxide, KO2, is used for producing oxygen and removing carbon dioxide in selfcontained breathing units, space shuttles, and other enclosed spaces. First the potassium superoxide reacts with moisture to release oxygen and produce potassium

25. ## algebra

Which of these is a variable term in the expression: –4 x2 + 100 / 2 A. 2 B. –4x2 C. –x2 D. 100

26. ## Math help

Determine the value(s), if any, of k for which the function f(x) = x^3 + 6x^2 + kx -4 gives the same remainder when divided by x − 1 and x + 2.

27. ## physics

Two cars are on a collision course. One is going right 18 m/s and has a mass of 860kg. The other is going left at 24 m/s and has a mass of 840 kg. 1. Find the total initial momentum of the two cars For this question I did first car: 860(18) = 15480 second

28. ## Math

the three vertices of rectangle ABCD are A(2, 1) , B(6, 1) , C(6, 4).Find the coordinates of D. Please help me,thank you.

30. ## maths

Sipho is 6 years older than betty.In 3 year's time sipho will be twice as old as betty.How old is sipho now

31. ## Math

Scott's salary decreased from \$78,000 to \$74,000. What is the absolute change in salary, and what is the relative change in salary. also New salary is what % less than his old salary. and New salary is what % of his old salary. and new salary is what times

32. ## History

What were reasons for the decline in power of the Catholic Church during the Renaissance and Protestant Reformation? (Select all that apply.) European leaders resented the papacy switching allegiances with varying European states the papacy decided to

33. ## BC Calculus

Fluid is flowing in a tube that has a radius of 3 centimeters. Water is flowing through a circular cross section at a rate of (9-r^2) cm/s, where r is the distance from the center of the cross section. What is the total amount of water that flows through

34. ## Math

if salary increased by 10% last year and then 8% this year. and original salary was \$50,000 per year. what is present salary since he has received the two raises? find the relative change between his original salary and his present salary. overall his

35. ## science

Bison, Zebra, and kangaroos have similar ecological niches but cannot be shown in the same food web, why? (doesn't mater where they live)

36. ## Organic Chemistry

Procedure: 1) Accurately weigh approximately 0.40 g of Dimethyl maleate into a 50 mL round bottom flask that possesses a ground glass joint, and record the weight. 2) Dissolve the Dimethyl maleate in 10 mL of methanol, and add approximately 5 drops of

37. ## Math

12,000 is compounded semiannually at a rate of % for 20 yrs

38. ## Chemistry

Adding 2.00 g of Mg metal to 95.0 mL of 1.00 M HCl in a coffee-cup calorimeter leads to a temperature increase of 9.2°C If the molar heat capacity of 1.00 M HCl is the same as that for water [cP = 75.3 J/(mol ∙ °C)], what is ΔHrxn? The answer is -44.4

39. ## English

1. I want to learn what car to drive. 2. I want to learn which car to drive. 3. I want to learn how to drive a car. 4. I want to learn that I can drive a car. 5. I want to learn who to drive. 6. I want to learn whom to drive.

40. ## English

In "The Pardoner's Tale" of Chaucer's The Canterbury Tales, what is one characteristic of an allegory? A: A story within the story*** B:Rhyming of every two lines C:A tale that is told as a long prose poem D:The use of characters to stand for ideas I chose

41. ## Organic Chemistry

Procedure: 1) Accurately weigh approximately 0.40 g of Dimethyl maleate into a 50 mL round bottom flask that possesses a ground glass joint, and record the weight. 2) Dissolve the Dimethyl maleate in 10 mL of methanol, and add approximately 5 drops of 10%

42. ## Physics

Determine the coefficient of friction between a girl's skis and the snow when she skis down a 20° degree hill and her ending speed is exactly two-fifths of what it would have been if the slope had been frictionless.

43. ## Social studies

Which sentence best describes How the process of the westward expansion affected American political culture? A-The need for labor led to the abolition of slavery and increased respect for personal liberty B-The concept of expansion led to an accepting

44. ## physics

Determine the coefficient of friction between a girl's skis and the snow when she skis down a 20° degree hill and her ending speed is exactly two-fifths of what it would have been if the slope had been frictionless.

45. ## algebra

a rental truck costs \$50 plus \$0.40 per mile show me how to complete the table x(miles) 30 40 50 60 need help with y(cost)

If 7oz equal \$1.19 What is 1oz

47. ## Calculus 1

At 2:00 pm a car's speedomoter reads 20 mph, and at 2:10 pm it reads 25 mph. Use the Mean Value Theorem to find an acceleration the car must achieve.

48. ## biology

how many copies of genome are present in a diploid cell in G1 phase?

49. ## physics

14.To test the durability of a new shock-proof camera, the company has the camera dropped from a height of 15.0 m. Assume air resistance is negligible. How long does it take for the camera to hit the ground? What is the speed of the camera just before it

50. ## PreCalculus

Prove the following to be an identity (cotx + cscx)*(1-cosx)=sin x

51. ## Science

Explain water potential and how it affects osmosis?

52. ## Genetics

Describe how chromosomes are cultured and prepared for laboratory analysis?

53. ## science

Why does the Earth get more energy from the Sun compared to any other star? •The Sun is much closer to Earth. The next closest star is 4.2 light years away. **** • The Sun is much denser than other stars. That means it produces more energy. • The Sun

54. ## physics

A 6.25-gram bullet travels at 365 m/s. It hits and enters a 4.50-kg crate. The crates slides 0.15m along a floor until it comes to rest. Find the friction force between the crate and the floor I used p=mv to get momentum and got 2.28125 N•s I calculated

55. ## math

Sam invests \$8000 in a stock but suffers loss of 5% per month. How many months will it take for Sam to lose a half of the original value?

56. ## Math

40 children were selling tickets for a charity. The ratio of the number of tickets each boy sold to the number of tickets each girl sold was 3:2. a)If 106 tickets were sold altogether, how many boys were there? b)What is the ratio of the number of boys to

57. ## Maths

A square is transformed into a recatangle of perimeter 30 cm, by increasing one side by 3 cm and reducing the adjacent side by 2 cm. Find the length of the square's side.

If you’re a Canadian exporter would you like to see a higher Canadian dollar or a lower Canadian dollar in relation to the US Dollar? Explain using an example. I would like to see what perspectives different people have

59. ## Literature

"I have always understood that's why I have been so frequently called 'a revolutionist.' It sounds as I have done some crime! Well, it may be the American black man does need to become involved in a real revolution. The word for " revolution" in German is

60. ## math

I have a graph (0, 1), (5, 2), (10, 3), (15, 4) (20, 5), (25, 6).What is the equation for this Graph?

61. ## Physics

When striking, the pike, a predatory fish, can accelerate from rest to a speed of 3.6 m/s in 0.11 s .

62. ## Algerba 2

A football is kicked into the air. Its height in meters after t seconds is given by h=-5(t-2)^2+20 What was the height of the football when it was kicked? Is it right the y intercept is 0,0 and x intercept is (0,0) and (4,0)?

63. ## math

79.9 times 100= 7990 divide by 99= 80.7070707 is this right

64. ## science

a body is moving with a initial velocity of 2m/s with constant acceleration of2m/s^2.another body starts from rest with constant acceleration of 6m/s^2.find how far from the second particles overtake the first

65. ## Law

How do law reports help drive judicial precedent? Thank you.

66. ## Physics

An ideal gas is sealed within a container at a tempreture of 17 degree celcies and a pressure of 101KPa. The container is heated until the tempreture of the gas reaches 100 degree celcies. A valve in the container is then opened to allow gas to escape

67. ## English

1. I like my father because he gives me a lot of allowance. 2. I like my father because he gives me a lot of allowances. 3. I like my father because he gives me a lot of pocket moneys. 4. I like my father because he gives me a lot of pocket money.

68. ## University physiology

Most tissues regulated by the autonomic nervous system recieve both sympathetic and parasympathetic input from postganglionic neurons. The responses are typically local, in contrast the adrenal medulla recieves input only from the sympathetic division, yet

69. ## English

1. Place the handout face down on the desk. 2. Face down your handout on the desk. 3. Face your handout down on the desk. 4. ______________________________. ------------------------------------------------ Are they all grammatical and the same? What other

70. ## chemistry

c6+h6+o2=co2+h2o in acidic medium balance by oxidation method

71. ## Physics

A rocket, initially at rest on the ground, accelerates straight upward from rest with constant acceleration 58.8 m/s2 . The acceleration period lasts for time 5.00 s until the fuel is exhausted. After that, the rocket is in free fall.

72. ## Physics

A rocket, initially at rest on the ground, accelerates straight upward from rest with constant acceleration 58.8 m/s2 . The acceleration period lasts for time 5.00 s until the fuel is exhausted. After that, the rocket is in free fall. Max height

73. ## social studies

why does the colonists have needed help to find and grow find？

74. ## science

100,000 light years refers to... • the size of the spirals with or galaxy (Milky Way) • an approximate measure of the luminosity of the galaxy • an approximate measure of the distance across the galaxy****

75. ## Math

When I am transforming square root of X in to Y= -3 (square root of x+9) -3 Do i turn the x in to negatives because its a reflection?

76. ## Math

Chris is four times as old as Grace and Chris is 36 years older than Grace. How old is Chris

77. ## Physics

In a 5.00 km race, one runner runs at a steady 11.3 km/h and another runs at 14.9 km/h . How long does the faster runner have to wait at the finish line to see the slower runner cross?

78. ## An introduction to the Middle East

What happened when Faisal took over? What are some of the challenges that Khalid had to face during his reign?

79. ## An introduction to the Middle East

Saudi Arabian political system. What are some of the sources of political influence? What are some of the political reforms demanded

80. ## An introduction to the Middle East

Is civil society allowed in Saudi Arabia?

81. ## Algebra 1

Breathless Cosmetics now offers 24 shades of eye shadow, 20% more than last year. How many shades were offered last year?

82. ## Thermodynamics

Derive Otto cycle efficiency and Mean Effective Pressure relation.

83. ## Math

A union contract called for a 7.5% increase in the hourly rate of pay. If the increase is \$0.39, what was the old hourly wage and what is the new hourly wage?

84. ## Thermodynamics

Describe the working of rotary expander or rotary compressor (Explain any one only) with figure

85. ## Physics

A flight attendant pulls her 66 N flight bag a distance of 359 m along a level airport floor at a constant velocity. The force she exerts is 42 N at an angle of 54Â° above the horizontal.

86. ## chemistry

what do you use a pipestem triangle for

87. ## Math

An older person is seven years older than six times the age of a younger person. The sum of their ages is 21. Find ages

88. ## chemistry

Consider the reaction 2 Al2O3(s) â†’ 4 Al(s) + 3 O2(g). âˆ†H = +3339.6 kJ/mol What is the change in heat when 0.455 L of a 3.60 M Al solution reacts with excess O2 ? 1. -21,962 kJ 2. -2735 kJ 3. -1368 kJ 4. -26,521 kJ 5. -685 kJ 6. -5477 kJ 7.

89. ## math

interpret the meaning of 15/2 and 30/3

90. ## Math

I posted this question yesterday but did not get a response so am posting again in hopes that I will get a response today. I am asking for someone to check my answers. The table shows the cost of renting a full-size rental car, based on the number of miles

91. ## Math

Robin has 7 red beads, 27 purple beads, and 24 yellow beads. She wants to make a necklace with the pattern: 1 red bead; 3 purple beads; 2 yellow beads. How many times can she repeat the pattern? Which color of beads will she run out first?

92. ## History

Which best describes a cause that fueled the Protestant Reformation? During a famine, the Protestant doctrine of individual freedom inspired the angry peasants to rebel against their feudal masters, known as the German peasant war the council of Nicea was

93. ## Physics

A golfer putts a ball to a point 22.0 ft. east of his position. The ball passed south of the hole. In order to sink the ball into the hole from his new location, the golfer will have to putt the ball 7.0 ft. on a bearing of 302T. How many feet away from

When I am transforming square root of X in to Y= -3 (square root of x+9) -3 Do i turn the x in to negatives because its a reflection?

95. ## Math

What is the greatest square number that is even and is less then 300. What is the valueof this square number?

96. ## A - G requirements

I mest up real bad my freshmen year, I took general sciene which doesn't help me get into university. Now I'm a sophomore and I just started taking Biology, how embarassing. Any advice on how I could catch up? Also, does anyone know if health counts for

97. ## History

What were reasons for the decline in power of the Catholic Church during the Renaissance and Protestant Reformation? (Select all that apply.) European leaders resented the papacy switching allegiances with varying European states the papacy decided to

98. ## Math

From home, Todd walked 3 blocks south and 2 blocks east to a friend's house.Then they walked 6 blocks west to school. He cannot cut across blocks. How many blocks from school does Todd live?

99. ## Algebra HELP

How is multiplying radical expression similar to FOIL with binomials?

100. ## math

a right rectangular pyramid has base dimensions 7yd. by 5yd. and a height of 10yd. determine the surface area of the pyramid to the nearest square yard.

101. ## physics

a tennis player receives a shot with the ball travelling horizontally at 50.0 m/s and returns the shot with the ball traveling horizontally at 40.0 m/s in the opposite direction. what is the impulse delivered to the ball from the tennis racquet?

103. ## Algebra: simplifying polynomials

Please simplify the following. Please show solution if possible:) Question 1: (x^3 + x^2 - y^3 - y^2) / (x^2 - 2xy + y^2) Question 2: (u^6 + v^6 + 2u^3 • v^3) / [u^3 - v^3 + (u^2 • v) - (u • v^2)]

104. ## calculus

A water trough is 8m long and its cross-section is an isosceles triangle which is 60cm wide at the top, and the height is 60cm. The trough is not full. Give an expression for V, the volume of water in the trough in cm^3, when the depth of the water is d

105. ## Pre calc

Form a polynomia f(x) with real coefficients having the given degree and zeros Degree: 5 ; Zeros: 2, -3i and 4-i

106. ## Pre calc

Find an equation for the ellipse described center (0,0); major axis horizontal with length 18; length of minor axis is 4

107. ## Physics

You stand at the bottom of an 8.0-m-long ramp that is inclined at 37∘ above the horizontal. You grab packages off a conveyor belt and propel them up the ramp. The coefficient of kinetic friction between the packages and the ramp is μk=0.30. A) What

108. ## Math

If Mr. Henderson has 2 bouncy ball machines and buys one bag of the 27-millilitter balls (180 per bag) and has a40-milliliter bag (80 per bag), if puts an equal number in each machine how many bouncy balls will he have?

109. ## Algebra

This year, 7 fewer students tried out for Lesterville High School's football team than tried out last year. This is a 14% decrease. How many students tried out last year? This year?

110. ## Math ( lim inf question)

What is lim inf sin((n*pi)/8) as n --> infinity.

111. ## English

In "The Prologue" of The Canterbury Tales, what is Chaucer's main reason for writing about the pilgrimage? A:To reveal the characters' beliefs about their religion B:To explain the personalities of different characters*** C:To describe medieval life from

112. ## Debt Sustainability

Fiscal deficit and public debt mounted and persisted in the 1980s and thereafter not only i zambia but in countries across the world. analyse zambia's debt persistence. what are the causes of the rapid rise in zambia's indebtedness?

113. ## English

1. I don't know who to hire. 2. I don't know whom to hire. 3. I don't know who I should hire. 4. I don't know whom I should hire. ---------------------------------- Are they all grammatical? Do we have to use 'who' or 'whom'? Which one is commonly used? 5.

114. ## Chemistry

A crystal of ice has a density of 0.917 g/cc. (a) What is the mass (in grams) of an ice crystal with a volume of 1.666 cm3 ? (b) What is the density of ice in kg/m3 ? (c) What is the volume (in mL) of an ice crystal that weighs 2250 mg? a)1.53 b)900 c)2 Im

115. ## Chemistry

The density of a solution of hydrochloric acid is 1.0929 g/cc, and it is 19.00 percent by mass. What volume of the solution (in milliliters) do you need to supply 30.0 g of hydrochloric acid? I'm not sure how to start