# Questions Asked onDecember 11, 2016

1. ## Social Studies NEED HELP

Which statement correctly contrasts the Lancaster Turnpike with the National Road? The Lancaster Turnpike was a longer road. The National Road required users to pay a toll to use it. The National Road was a “corduroy road.” The Lancaster Turnpike was

2. ## english

What does the author achieve by mixing exact and approximate numbers in "A Contribution to Statistics?"

3. ## Physics

1. The figure shows a 100-kg block being released from rest from a height of 1.0 m. It then takes 0.53 s for it to reach the floor. What is the mass m of the block on the left? There is no friction or mass in the pulley, and the connecting rope is very

4. ## Math

If Mrs. Jacobsen wants to buy the item with the unit price , what item should she order and how many of that item should she order?

5. ## Math

Here is the question:Consider a data set of 15 distinct measurements with mean A and median B. (a) If the highest number were increased, what would be the effect on the median and mean? Explain. The mean would remain the same while the median would

6. ## MAth

at a city hospital 40 boys and 50 girls were born yesterday. what is the experimental probability that the next baby born will be a girl?

7. ## Algebra 2

The mass of the particles that a river can transport is proportional to the sixth power of the speed of the river. A certain river normally flows at a speed of 2 miles per hour. What must its speed be in order to transport particles that are 15 times as

8. ## AP Calculus AB

The fence around Wayne Manor (a rectangular plot of land) is going to be replaced. No fence will be required for the side lying along Gotham river. If the new wrought iron fence costs \$12 per meter for the side parallel to the river and \$4 per meter for

9. ## History

1. Which answer best explains how the Articles of Confederation addressed the question of creating a court system? The Articles established the trial-by-jury system for the first time in history. The Articles created state, regional, and national courts

10. ## Algebra

This excerpt comes from a letter Jefferson wrote in response to the supreme courts decision on marbury v.madison. what was Jefferson's greatest concern? A. He was concerned that the decision gave the supreme court too much authority. ******* B. He was

11. ## Science

Which statement best describes a spring tide? A - The periodic rise and fall of the water level in the oceans B - the tide if maximum range that takes place two times a month C - the difference in levels of ocean water at high tide and at low tide D - a

12. ## math

A lighthouse flashes its light every 12 minutes.Another lighthouse flashes every 18 mins. If the two lighhouses flash together at 12:00 noon,at what time will they next flash together?

13. ## Chemistry

Draw the Lewis Structure of CH3NCS including all resonance forms. Assign formal charges. Do not include resonance arrows.

14. ## Chemistry

A 50.0 mL aqueous solution of sodium hydroxide has a pH of 12.50. If 36.00 ml of 0.0200 mol/L sulfuric acid is added to this sodium hydroxide solution, what will be the new pH of the resulting solution? Assume that the temperature stays constant at 25 C,

15. ## physics

A car's internal combustion engine can be modeled as a heat engine operating between a combustion temperature of 1500∘C and an air temperature of 20∘C with 30% of the Carnot efficiency. The heat of combustion of gasoline is 47 kJ/g. Q) What mass of

16. ## Math

Can a hexagon have angles that measure 85 62 133 95173 160

17. ## English

I need 3 important quotes from the book Iqbal by francesso d'adamo I found one which is about Iqbal Masib who ran away from the Carpet Factory. I need 2 more but I can't find any. Can you please help me?

18. ## Physics

1. The figure shows a 100-kg block being released from rest from a height of 1.0 m. It then takes 0.53 s for it to reach the floor. What is the mass m of the block on the left? There is no friction or mass in the pulley, and the connecting rope is very

19. ## Social Studies *Check Answers*

Anyone mind checking these 2 quiz answers please? Which statement best explains why nation-states write constitutions? A: Constitutions give citizens unlimited powers. B: Constitutions establish nation-states. C: Constitutions allow governments to elect

20. ## physics

A wheel starting from rest is uniformly accelerated with alpha=4 rad/seconds square for 10 seconds. It is then allowed to rotate uniformly for the next two seconds and is finally brought to rest in the next 10 seconds. Find the total angle rotated by the

21. ## Calculus

If an isosceles triangle has a fixed perimeter P, find the dimensions that maximize that area. Show how you know that it is the maximum.

22. ## Science

You are pushing a friend on a sled. You push with a force of 20N. Your friend and the sled together have a mass of 60kg. Ignoring friction, what is the acceleration of your friend on the sled?

23. ## acc 305 accounting

The fourth step in the financial accounting research process may require you to​ ________. A. cross reference information in the Codification B. work down the levels of the hierarchy to identify a similar transaction C. draft a memo D. change or refine

24. ## AP Chem

Benzene is a hydrocarbon that is commonly used as a commercial solvent. However, it is carcinogenic; i.e., accumulations in the body can cause cancer. What is the vapor pressure of benzene at 29◦C? The normal boiling point of benzene is 80.0◦C and its

25. ## History

On October 20th 1803 the Senate ratified the Louisiana purchase treating. Vote of 24 to 7 the agreement which provided or the purpose of Western half of the Mississippi River basin from France at a price of 15 million \$ or approximately four cents per

9. As you're revising an essay, you write down several sentences to describe your intended readers. Why should you do this? To make sure you're writing what you know, not what you believe B. To ensure that you're instructing your audience adequately C. To

27. ## algerbra

For what value of X can the expression Square root of 55X be further simplified?

28. ## US HISTORY - Help please

Which answer best explains how the Articles of Confederation addressed the question of creating a court system? The Articles established the trial-by-jury system for the first time in history. The Articles created state, regional, and national courts

29. ## Algebra

A right triangle has an area of 24 ft^2 the demesions of the triangle are increased by a scale factor of 6 what is the area of the new triangle

30. ## chemistry

What volume of 0.900 M HCl is required to complete neutralize 50.0 ml of a 0.500 M Ba(OH)2 solution?

31. ## Science

Cassie is writing an equation to show the effect of gravitational pull of the sun and moon on tidal range which equation would Cassie use to show the effect of the sun and the moon on Spring tides? A - sun + moon = spring tides B - sun + Earth = spring

32. ## Math

Someone please help me, I do not understand how to solve this problem: Let x be a random variable representing dividend yield of bank stocks. We may assume that x has a normal distribution with σ = 2.0%. A random sample of 10 bank stocks gave the

What is the smallest perfect cube that has a factor of 4725? Factors of 4725 are 3,3,3,5,5,7 I have 3^3 and 5^2 and 7. So I need 1 more 5 and 2 more of 7 So: 3^3*5^3*7^3 = 1157625 When I cube root 1157625 it is 105. So is this the answer? The smallest

34. ## Math

How many gallons of water should be added to raise water level 1 inch in a 12 by 24 foot pool?

35. ## Calc

This summer Borice decides to put a rectangular swimming pool in his back yard. The material he uses for the border of the length of the pool costs \$10 per foot and the material he uses for the width costs \$5 per foot. He would like spend \$1,000 on the

36. ## Chemistry

If 8.87 g of CuNO3 is dissolved in water to make a 0.500 M solution, what is the volume of the solution?

37. ## Physics

Two point sources emit sound waves of 1 m wavelength. The sources are pointed at each other. The sources, 2 m apart, emit waves which are in phase with each other at the instant of emission. a) Where, along the line between the sources are the waves out of

38. ## math

A video store charges \$3.50 to rent a DVD. Every fourth DVD that a customer rents is free. Brooke paid a total of \$252 last year for renting DVDs. How many free DVDs did she receive?

39. ## precalculus

Can you please check and correct my answers? Convert to Rectangular: r*tanΘ/secΘ=2 ________________________________________ y=2 y=½ x=2 x=½ answer: y=2 Given: 5cos6Θ What is the shape of the function? ________________________________________ Limacon

40. ## science

A 12m tall tree to be photographs with pin hole camera it is situated 15 m away from camera how far should screen place from pin hole camera to obtain 15m tall image of tree

41. ## Math

Write and solve an equation to find how much water Montana average 3 month temperature is then minnesota

42. ## Material balance

A dilute salt solution containing 6% salt is fed to an evaporator at rate of 10000 kg/h for a trail run. crystals formed along with the saturated solution adhering with them are sent to a centrifuge for the recovery of the solution. 60% of the adhering

43. ## math

The shape of a milk carton is a solid composed of a rectangular prism and a pyramid as shown. What is the formula for finding the volume of the milk carton?

44. ## precalculus

Convert to Rectangular: r*tanΘ/secΘ=2 ________________________________________ y=2 y=½ x=2 x=½

45. ## Chemistry

4Fe + 3O2 = 2Fe2O3 158g of Fe will react with how many litres of O2 to produce the maximum amount of Fe2O3

46. ## Science

Luis created a clay model of earth and the sun to show how earth rotates, Luis wants to use a toothpick to represent earths axis of rotation Where should he put the toothpick A - horizontally through earth in the direction earth is traveling B - vertically

47. ## Math

1.Suppose we are given logic statements p, q, and r. a. If p → q and p → r, may we conclude that q → r? Answer yes or no and give a reason why. b. What is the converse of the following: not p → not q c. What is the contrapositive of r → q? d. The

48. ## Algebra!

Can you please assist with this question: At a school production, adult tickets cost \$7.00 each and student tickets costs \$4. The Johnson family is going to the 7:30PM show and will purchase half as many adult tickets as student tickets. If the Johnsons

49. ## Algebra

Can you please review to see if I am on the right track with this problem: The length of a rectangle is 2 centimeters less than two times the width of the rectangle. If the perimeter of the rectangle is 98 centimeters, what is the length of the rectangle?

50. ## interior decoration

Which one of the following fabrics is most suited to a formal setting? A. Silk C. Cotton B. Wool D. Linen

51. ## TX HIST

Consider these three Supreme Court cases Smith v. Allwright (1944), Sweatt v. Painter (1950), Brown v. Board of Education (1954). What do they have in common, and how did Texans respond? In the 20th century, what were the most important events for

52. ## Algebra

Name two ways to solve for y=2x^2+16

53. ## Algebra

Can you please help me with this problem: The x-intercept of a line has a value of -3/2 and a y intercept of 3. Another line has a slope that is three times the slope of the first line and has a y-intercept that is 28 more than the first line's

54. ## precalculus

Given: r = 4/-2-costheta What type of directrix does this conic have? ________________________________________ Vertical Horizontal Oblique This conic does not have a directrix.

55. ## College Physic

A 1.54 x 10-2-kg block is resting on a horizontal friction-less surface and is attached to a horizontal spring whose spring constant is 129 N/m. The block is shoved parallel to the spring axis and is given an initial speed of 8.84 m/s, while the spring is

56. ## math

A rectangular prism has a volume of 162 cubic centimeters. If the length, width, and height are reduced to 1/3 of their original size what will the new volume be

57. ## Physics

A solid weighs 6.4 kg in air and 5.6 in water. Find the density of the solid

58. ## math

A snowball was thrown from a cliff. The height above ground of the snowball is modeled by the function h(t) = -16t2 + 48t + 28, where h is height in feet, and t is time in seconds. How long was the snowball in the air? Did everything got (4t+7)(t+1) then

59. ## Solstudies

What is Williamsburg originally named

60. ## Maths

The man give 1/2 of his wealth to his wife and 1/6 of his share to two daughters and remaining 45000 give to charity what is his wealth?

61. ## math

Clay Thompson scored 38 points in one game. He made both 2pt shots and 3 pt. Shots. He scored a total of 16 times. How many 2 pt shots did he make and how many 3 pt shots did he make?

62. ## math

A snowball was thrown from a cliff. The height above ground of the snowball is modeled by the function h(t) = -16t2 + 48t + 28, where h is height in feet, and t is time in seconds. How long was the snowball in the air? Did everything got (4t+7)(t+1) then

63. ## Science

What is equation between ethanethiol and methoxide ion?

64. ## Math

1.a. 123five + 34five b. 1010two - 101two c. 23five * 34five c. What is the contrapositive of r â†’ q? d. The statements p â†’ q and q â†’ r are given. If we know q is true, is p necessarily true? Explain.

65. ## Chemistry

Ammonium nitrate is an oxidizing agent and can give rise to explosive mixtures of mixture of two moles of powdered aluminum and 3 moles of ammonium nitrate crystals react exothermically yielding nitrogen gas water vapor and aluminum oxide how many grams of

66. ## Physics

A force of 400 N at an angle of 15 degrees above the horizontal is needed to pull a 180 kg trunk across the floor at constant speed. What is the coefficient of kinetic friction between the trunk and the floor?

67. ## Geoemtry

A picture frame has a square picture in the center of the frame, the top and bottom borders are each 2 inches wide and the left and right borders are each 4 inches wide. What is the value of x if the total area of the picture frame is 65.25 inches

68. ## English

1. I said, "where do you live?" 2. I asked where she lived. 3. I asked where he lived. 4. I asked where they lived. ---------------------------- Can #1 be changed into #2, 3, or 4?

69. ## math

A rectangular prism has a volume of 162 cubic centimeters. If the length, width, and height are reduced to 1/3 of their original size what will the new volume be?

70. ## Maths

Find the number of ways of forming an executive committee of 4 in a social club consisting of 15 members, if a particular man must be in the team

71. ## chemistry

Hydrochloric acid solution reacts with zinc according to the following equation: 2H3O + Zn -> Zn^2+ + H2 +2H2O 100ml of hydrochloric acid solution Ca=0.5mol/l must be prepared from C=5mol/l hydrochloric solution. 1) Specify the glassware needed for this

72. ## algebra

Clay Thompson scored 38 points in one game. He made both 2pt shots and 3 pt. Shots. He scored a total of 16 times. How many 2 pt shots did he make and how many 3 pt shots did he make?

73. ## Geometry

A tree stands 22 feet tall and is 382 feet from a building. The tree casts a shadow that is 40 feet long. How tall is the building? I got 211 feet, but I do not think that is correct. Can you tell me what I am doing wrong? I set it up like this h/382=22/40

74. ## algebra

a certain positive number is equal to nine-tenths of the sum of the number and its reciprocal. find the number

75. ## acc 305 accounting

In addition to disclosing judgments involving estimates and​ assumptions, ________ requires that companies disclose judgments made when determining appropriate accounting treatments. A. IFRS B. U.S. GAAP C. both A​ & B D. neither A nor B answer C

76. ## Math check - Statistics

Can someone (preferably one of the long-term tutors) check my answers: Researchers trap 23 devils, and find that 18 of them are infected. Provide an estimate of disease prevalence. p-hat = (18/23)=0.783 Part II: assuming the same disease prevalence from

77. ## Math

If it is 750 calories per hour how many hours would a person have to jump rope in order to lose 1 lb ?

78. ## algebra 1

A rectangular piece of cardboard has a perimeter of 88 cm. The length of the rectangle is 8 cm longer than three times the width. Find the length and width of the rectangle.

79. ## Chemistry

A scintillation counter detects radioactivity by: A) none of the answers. B) emission of light from a NaI crystal when radioactivity passes through the crystal. C) ionization of argon gas in a chamber which produces an electrical signal. D) analyzing the

80. ## MATH

Graph is a complete graph -it called K6- IT HAS 6 VETICES. also, every vertex is connected to every other vertex. a) how many possible Hamilton circuits ( say starting from A) including reversals, does the graph have? b) if we were to use the Brute Force

81. ## Kumar

What is science?

82. ## Geometry

Hi I was having some problem with this question, its been a while since I had been in geometry. I think you foil, but Im not sure. Solve for X. 2(x+4)(x+3)= 3(x+2)(x-1)

83. ## Physics

A child is playing with a remote-controlled racecar on the fire escape of a sixth-floor apartment. An accidental turn sends the car through the railing and over the edge of the fire escape. Explain why the time it takes for the car to fall does not depend

84. ## Math

a scarf is originally priced at \$30.00. it is then discounted by 25%. several days later, it is discounted 10% off the new price. is the cost of the scarf the same as if the store had taken 35% off the original \$30?

85. ## Physics

if a molecules in a solid has a temp of T = hf/2k then what would be the average energy of vibration

86. ## Chemistry

Why do carbonated beverages go "flat" when opened and left and room temperature and pressure?

87. ## Physics

arnot’s engine with air as working substance is initially at 3270C and pressure of 12 atmospheres. The volume is one litre to start with. The expansion or compression ratio is 1:6. Find the lowest temperature and efficiency. (γ= 1.4)

88. ## math

Travis is 2121 years older than his sister Michelle. In 99 years, he will be twice as old as Michelle. How old is each of them now?

89. ## precalculus

what is the formula for finding the distance between the pole and the directrix?

90. ## precalculus

can you check my work Given: r = 4/-2-6sintheta What is the eccentricity of the function? r = 4/-2-6sintheta r=4/8sin theta r=2sintheta the eccentricity is 2

91. ## Math

A body is falling downwards 48 meters in 4 seconds.calculate,what distance would it fall in 9 seconds. Given that when a body falls,distances varies directly as the square of time.

92. ## Algebra

Can you please verify if I did this problem correct. I need to solve for y and then X. Whatever the solution is, I should take the difference of the two numbers. Please let me know if this is correct...I thank you 8x -11y = 170 -6y + x = 49 8x -11y = 170

93. ## Physics

if a molecules in a solid has a temp of T = hf/2k then what would be the average energy of vibration 1) 0.88kT 2) 0.47kT 3) 0.62kT 4) 0.31kT

94. ## algebra 1

Clay Thompson scored 38 points in one game. He made both 2pt shots and 3 pt. Shots. He scored a total of 16 times. How many 2 pt shots did he make and how many 3 pt shots did he make?

95. ## General

I just have a question for the people who help the students. Do you guys pick certain people to answer or does it take more time to figure out or answer certain problems over others? Or does it just have to do with the fact that some tutors and volunteers

96. ## precalculus

Given: r = 4/-2-costheta What type of conic does this represent? ________________________________________ Circle Ellipse Hyperbola Parabola

97. ## math

Drawing 5 cards out of 13 cards numbered 1 to 13 without replacement, what is the probability of having a sum greater than 40 ?

98. ## physics

a force of 400 N at an angle of 15 degrees above horizontal is needed to pull a 180 kg trunk across the floor at constant speed. what is the coefficient of kinetic friction between the trunk and the floor

99. ## algebra word problem

One year, Shannon made \$288 from two investments. \$1100 was invested at one yearly rate and 1800 at a rate that was 1.5% higher. Find the two rates of interest

100. ## math

Paul works for three hours. Sally works 2 1/2 times as long as Paul. Raul works 3/4 hours less than Paul. Tim works 1 1/3 times as long and Raoul. How long does each person work? How long do they work together?

101. ## math

how many feet in 96 inches

102. ## TX HIST

During the 20th century, what has happened to make TX more like the rest of the nation? On the other side of that question, what is truly distinctive about TX that will have a continuing influence on TX’s future?

103. ## Pre-Calculus

Find P + 1 if Pk = 7 + 13 + 19 + ...+[6(k - 1)+1] + (6k + 1) (the k+1 and k in front of the P are subscripts) A. 7 + 13 + 19 + …+[6(k - 1) + 1] + (6k + 1) + [6(k + 1) + 1] B. 8 + 14 + 20 + …+[7(k - 1) + 1] + (7k + 1) C. 7 + 13 + 19 + …+(6k + 1) D. 7

104. ## Science

I need help on this fill in the blank science question for my study guide on Cellular Respiration "More active cells need more ______ to release more _______"

105. ## Algebra

Please help: The president will order 5 turkey sandwich combos and 7 steak lunches and spends \$124.00. The other president will get 10 turkey combos and 5 steak combos for \$140.00. How much is a turkey sandwich combo? Write a system of equation. 5x + 7y =

106. ## Chemistry (PLZ HELP)

State why you think clothes might be important to clean in hot water. Is it because it has to do with solubility or something?

107. ## Algebra

The base of a triangle is 3 inches less than twice its height If the area of the triangle is 126 square inches what equation can be used to find h the height of the triangle in inches A. 2h^2-3h+63=0 B.2h^2-3h-63=0 C.2h^2-3h+252=0 D.2h^2-3h-252=0 I think

108. ## Maths

The numerator of a rational number is 17 more than its denominator. The numerator of its absolute is 7 more than its denominator. Find the rational number.

109. ## Chemistry

This same substance is a gas with a density of 1.25 g/L at 127o C and a pressure of 400 torr. What is its molar mass ?

110. ## Math

if perimeter =20cm,length=6cm then what is its breath

111. ## Java programming

I have hard time doing this any help? Rewrite the definition of the method setdate and the constructor with parameters so that the values of month, day, and year are checked before storing the date into the data members. Add a method isleapyear to check

112. ## Calculus III

Hi, this question is about Langrange multipliers. Given f(x,y) = y^2 - x^2, subject to the constraint g(x,y) = 0.25x^2 + y^2 = 1, find the max and mins. So I found the partial derivatives for both f(x,y) and g(x,y): fx = -2x fy = 2y gx = 0.5x gy = 2y And

113. ## TX HIST

How did Lyndon Johnson alter southern politics? What was it about his being a Texan that influenced him in these actions? How were Texas’ borders created? What is the history of its distinctive shape?

114. ## algerbra

What value of X makes 11 the square root of 37x equal to 44 the square root of 37 ?

115. ## Algebra

Can you please help? At a store, you can buy three packs of heavy duty batteries and six boxes of cereal for \$48.00. You can also buy two packs of heavy-duty batteries and eight boxes of cereal for \$46.00. What is the cost of one pack of heavy duty

116. ## Physics

A 15 ft plank of mass 50 kg is laid across two ladders. The ladders are 5 ft apart, and the plank is laid such that 5 ft of it hang off at each end. You have a mass of 90 kg. (a) How far out past the ladder can you walk before it gets dangerous? I tried

117. ## algebra

Write the equation of a line that is perpendicular to the line x = -5 and passes through the point (-3,-7)

118. ## precalculus

can you please explain how you determine the type of directrix a conic has?

119. ## English

1. She didn't need to leave early. 2. She didn't have to leave early. 3. She needed not to leave early. 4. She had not to leave early. --------------------------- Are they all the same and grammatical? Do you use #4 often?

120. ## Math! Help!

Please i need the euclidean division of: 2X^3+3X^2-X-5 ÷ X^2-1 Help!

121. ## math

Discuss 5 application areas of assignment Methods of Linear programming.

122. ## Math equation

I've won 556 games and tied 4 games and lost 228 games what is my percentage of wins

123. ## English

Identify and explain a rhetorical strategy used by hawthorne in order to build tension between Chillingworth and Prynne in chapter 4 of the scarlet letter. His choice of words represent suspense between the two. I don't know

124. ## Geometry Honors

A tree stands 22 feet tall and is 382 feet from a building. The tree casts a shadow that is 40 feet long. How tall is the building?

125. ## Sports

Explain the law 'handling the ball' in the field of cricket.

126. ## precalculus

can you explain how you find the eccentricity of r=4/-2-costheta?

127. ## precalculus

what is the formula for finding the eccentricity of r=4/-2-costheta and can you explain how to use it?

128. ## Math

Explain the euler's formula.

129. ## math(Quantitative methods) pls help me out

Discuss 5 application areas of assignment Methods of Linear programming.

130. ## physics forces/kinematic

What does it mean that 1) A body can have zero acceleration but still in motion. 2) A body can have zero velocity but it's also accelerating. I don't really understand this two points, please explain it to me, thks!

131. ## calc

Use l'Hospital's Rule to show that lim x-> infinity (1+1/x)^x =e

132. ## math

if Mindy has a 20 minute walk to school and she stops for a hotdog that takes 5 minutes to cook how long will it take for her to get to school?

133. ## Pre-Calculus

Which of the following shows the correct first step to prove the following by mathematical induction? 3 + 11 + 19 + 27 + … + (8n - 5) = n(4n - 1) A. 3 + 11 + 19 + 27 + … + (8 • 1 - 5) = 1(4 • 1 - 1) B. 8 • 1 - 5 = 1(4 • 1 - 1) C. 3 + 11 + 19 +

134. ## Zoology

Azaleas are flowering shrubs that produce numerous colorful blossoms. Assume that a single gene determines the color of the flowers, and only two alleles for that gene exist. Individuals that are homozygous for the first allele have yellow flowers and

135. ## algebra 1

Write the equation of a line that is perpendicular to the line x = -5 and passes through the point (-3,-7)

136. ## algebra

Ms. Easty picked up 3 doughnuts and 4 coffees and paid \$4.91. Mrs. martin picked up 5 doughnuts and 6 coffees at the same shop and paid \$7.59. How much did 1 doughnut cost? How much did 1 coffee cost?

137. ## ACC 305

Under​ IFRS, when do firms recognize income on the income​ statement? A. Under​ IFRS, income is recognized on the income statement when the following two criteria are​ met: (1) an increase in future economic benefits related to an increase in an

138. ## chemistry

what is the procedure for the preparation of 10 gram of lead iodide

139. ## Physics

A tennis ball is released at 30 degrees. It reaches max height of 20 ft find initial speed

140. ## Math

What is the definition for composite

141. ## Math! Help!

Domain of X^2-1 ??

142. ## Amos

What is the chemcal equation between ethanethiol and methoxide anyone?

6-3r-3

144. ## Algebra

-12greater than or equal to x^(2)+8x

145. ## precalculus

Given: r = 4/-2-costheta Is the correct answer -1/2 If not which is the correct answer? What is the distance between the pole and the directrix? ________________________________________ 4 -4 ½ -½

146. ## precalculus

can you please explain how to find the distance between the pole and directrix?

147. ## Math

If there are 860 apples 20% is red and 15% is yellow what percent is green