# Questions Asked onMay 22, 2012

1. ## math

Evaluate the following expressions for x=-3 13)–2x^2 = 14)(-2x)^2 = 10)Use the discriminant to determine the number of solutions of 3x^2-4x+6=0 8)Solve sqrt[3b] = -3

2. ## math

Evaluate the following expressions for x=-3 13)–2x^2 = 14)(-2x)^2 = 10)Use the discriminant to determine the number of solutions of 3x^2-4x+6=0 8)Solve sqrt[3b] = -3

3. ## physics

after a golf ball is hit it takes off with an initial speed of 23.4 m/s and at an angle of 43.0 with respect to the horizontal the gold field is flat and horizontal. neglecting air resistence how far will the ball fly

4. ## Physics

For long range communication an elephant uses a low frequency rumble that is undetectable to human ears. One elephant can pick up another elephant's call from a distance of 10 km. The frequency of this rumble is about 13 Hz. How fast does the rumble

5. ## Physics

For long range communication an elephant uses a low frequency rumble that is undetectable to human ears. One elephant can pick up another elephant's call from a distance of 10 km. The frequency of this rumble is about 13 Hz. How fast does the rumble

6. ## Math

There are 20 cars in the parking lot. 2/5 of the cars are white. How many cars at white?

7. ## Math

There are 20 cars in the parking lot. 2/5 of the cars are white. How many cars at white?

8. ## Pre-Calc

How do I calculate the coordinates for the Polar equation r=4cos3theta ?

9. ## physics

For long range communication an elephant uses a low frequency rumble that is undetectable to human ears. One elephant can pick up another elephant's call from a distance of 10 km. The frequency of this rumble is about 13 Hz. How fast does the rumble

10. ## physics

For long range communication an elephant uses a low frequency rumble that is undetectable to human ears. One elephant can pick up another elephant's call from a distance of 10 km. The frequency of this rumble is about 13 Hz. How fast does the rumble

11. ## physics

For long range communication an elephant uses a low frequency rumble that is undetectable to human ears. One elephant can pick up another elephant's call from a distance of 10 km. The frequency of this rumble is about 13 Hz. How fast does the rumble

12. ## physics

For long range communication an elephant uses a low frequency rumble that is undetectable to human ears. One elephant can pick up another elephant's call from a distance of 10 km. The frequency of this rumble is about 13 Hz. How fast does the rumble

13. ## physics

For long range communication an elephant uses a low frequency rumble that is undetectable to human ears. One elephant can pick up another elephant's call from a distance of 10 km. The frequency of this rumble is about 13 Hz. How fast does the rumble

14. ## physics

For long range communication an elephant uses a low frequency rumble that is undetectable to human ears. One elephant can pick up another elephant's call from a distance of 10 km. The frequency of this rumble is about 13 Hz. How fast does the rumble

15. ## physics

For long range communication an elephant uses a low frequency rumble that is undetectable to human ears. One elephant can pick up another elephant's call from a distance of 10 km. The frequency of this rumble is about 13 Hz. How fast does the rumble

16. ## physics

small mass hangs at rest from a vertical rope of length that is fixed to the ceiling. A force then pushes on the mass, perpendicular to the taut rope at all times, until the rope is oriented at an angle and the mass has been raised by a vertical distance .

17. ## english

I wrote an essay because i'm apply to get into the honor's program. I'm supposed to write about who i was, who i am now, and who I would like to be. I would appreciate it if I got some feed back along with grammar correction. Is my essay even close to

18. ## physics

A small mass m hangs at rest from a vertical rope of length l that is fixed to the ceiling. A force F then pushes on the mass, perpendicular to the taut rope at all times, until the rope is oriented at an angle (theta)=(theta)0 and the mass has been raised

19. ## world history

what is this scrambled word tiedeynvcohdime

20. ## Chemistry

Why doesn't a reaction occur when thiosulfate ions are added to solid silver iodide, but does occur when added to silver bromide?What role does the equilibrium concentration of silver play in this phenomenon?

21. ## Chemistry

In experiment of silver, lead and mercury(I) chlorides mix with NH3, how does the heating of the lead precipitate present after the addition of NH3help identify the formula ?of the precipitate

22. ## Maths

1.)1/x^2+x+1+2x/x^4+x^2+1=_______

23. ## Algebra 2

Combine The Rational Expressions and Simplify (3x-7)/(x^2-12x+27)-(3x-8)/(x^2-9x+18)+(x+2)/(x^2-15x+54)

24. ## physics

two balls of different masses are thrown vertically upward with same initial velocity .calculate the ratio of ratio of maximum height attained by them

25. ## English Help

Write the plural possessive form of each noun for questions 1–3 1. friend 2. box 3. house

26. ## statistics

suppose 25% of the urban population is 18 years old or younger. five residents of that city are selected at random find the probability that at least two of the selected five persons are 18 years old or younger. please help me with this question !!!

27. ## Maths

How many trees can be planted in an area of 90000 sq feet if vertically 8 feet distance and horizontally 3 feet distance is to be kept? Pl show the method of calculations.

28. ## Biology

- "problems that result as blood alcohol concentration increases" Basically, I'm supposed to put what page number the answer is on, and then what the answer is. I have the page number, yet the answer is no where on the page to be found. I've read it over

asked by Gamzee :o)
29. ## Maths

If tan theta= 1/5 Simplify tan(540-theta) In the unit circle do I have to go clockwise or anti-clockwise from the fourth quadrant? Please help is needed for this

30. ## physics

A glass bulb with radius 15 cm is filled with water vapor at a temperature of 500 K. On the exterior of the bulb a spot with area 2.0 mm^2 is placed in contact with liquid nitrogen. This causes the temperature of the spot to drop well below 0◦C. When the

31. ## chemistry

A 20.0 gram sample is a mixture of sodium phosphate ,sodium mono-hydrogen phosphate,sodium dihydrogen phosphate and sodium chloride. The sample is dissolved in 100.0 ml of deionized water and titrated with 1.5 M hydrochloric acid. The initial pH of the

32. ## Business math

A plumber's assistant's rate of pay is \$0.75 per cubic foot of earth moved. He moves 220 cubic feet of earth to dig a trench. He moves the same amount to fill the trench. What is his pay for this job?

33. ## Math

A cone shaped paper cup has a height of 7 inches and a diameter of 5 inches. What is the volume of the cone? Round to the nearest hundreth

asked by Tina Clark
34. ## Math

The sum of the ages of Travis, Mac and Ellie is 44. Travis is 4 years older than Ellie and Mac is twice as old as Ellie. How old is each?

35. ## Math

Jack is thinking of a number. Here are four facts about his number: a. It is a multiple of 3 b. it had three digits and is a palindrome C. It is odd D. At least one digit is 2 What number(s) satisfy the four properties of jacks number?

asked by Frank C.
36. ## statistics

what is a critical value

asked by Fakaapo. Suetusi
37. ## maths

Water is leaking out of a barrel. In the first hour, it lost half the number of litres it held, plus one litre. In the second hour, it lost half the remainder plus another litre. In the third hour, it lost half the remainder again, plus a further litre;

38. ## physics

an aircraft is moving east with a speed of 510km/h at a height of 200m. at a certain distance,the sound of the plane as heard by a ground observer appears to be coming from a point vertically above him. where is the plane at this instant? explain with

39. ## physics

at what angle must the two forces of 50 newton and 120 newton be acting so as to balanced by a force of 130 newton?

40. ## physics

a car is moving on a horizontal frictionless road and reches base of an upslope . what should be the speed of the car at the base of the upslope so that it can just reaCH its top without external force applied to it.(length of slope=15m, angle of

41. ## physics

two forces of 62N and 95N are acting on an object at an angle of30 degree and 60 degree from horizontal in opposite direction . find out total force experienced by the object in horizontal and vertical planes?

42. ## physics

explain why microwaves are better carriers of signals for long range transmission of radio waves?

43. ## maths science,sst,hindi,english,economics

one liter of water at atmospheric pressure ismixed with 9 liter of water of 25 degrees at an atmospheric pressure in an insulated tank .find the temprature of tank.options are 1)25 2)32.5 3)30 4) 24........pls. help

44. ## English

Unscramble bssmyale

45. ## Chemistry

The PH of a 1.3M HF solution is 3.18. What % of the acid ionized?

46. ## Chemistry

Propanoic acid has a Ka of 1.3 x 10^-5. What is the % ionization in a 3.0M solution?

47. ## Chemistry

HBrO3 has a Ka of 3.6 x 10^-6. What is the pH of a 2.0M solution?

48. ## Chemistry

a 2.0M solution of Hbr will have what pH?

49. ## Chemistry

Why do chloride ions increase corrosion?

50. ## math

3x-(x+5)/2=x+8 what is the x?

51. ## physical sciences

How many neutrons are in an atom of carbon with a mass number of 14? help please...

52. ## algebra

A rectangular window is 4x inches wide and 8x inches long. What is an expression for the distance from one corner of the window to the opposite corner? Give your answer as a simplified radical.

The concentration of iodide ions in a saturated solution of lead(II) iodide is __________ M. The solubility product constantof PbI2 is 1.4x10-8

54. ## algebra

If events A and B are independent, P(A) = 0.62, and P(B | A) = 0.93, what is P(B)?

55. ## Math

Adjusting a budget - Given the net income, the percent budgeted for two variable expenses, and the amount of an unexpected bill, determine if there is enough money in the variable expense items to cover the amount of the unexpected expense or if the bill

asked by Cody Davidson
56. ## Marine Biology

Surface currents are created by wind and the Earth's rotation. What creates deep water currents?

57. ## Art

Can you please help me check a few things, Writeacher? Thank you. 1)The two political parties which alternated in government were the Whigs and the Tories. 2) The Whig ministers' meetings developed into the cabinet led by the Prime Minister. 3) It is

58. ## Calculus

How do you use imlicit differentiation to differentiate e^(xy)? I have the problem "use implicit differentiation to find dy/dx. e^(xy)+ x^2 - y^2 = 10. I've gotten to the point whereI have d/dx(e^(xy)) + 2x - 2ydy/dx = 0, but I can't go any further because

59. ## Math

Suppose you have binomial trials for which the probability of success on each trial is p and the probability of failure is q= 1-p. Let k be a fixed whole number greater than or equal to 1. Let n be the number of the trial on which the kth success occurs.

60. ## Math

On the leeward side of the island of Oahu, in the small village of Nanakuli, about 80% of the residents are of Hawaiian ancestry. Let n = 1,2,3.... represent the number of people you must meet until you encounter the first person of Hawaiian ancestry in

61. ## Mathematics I

Evaluate definite integral from -2 to 0. Integral((x^2)(e^((x^3)/2)dx) Do those parentheses make sense? The power of e is x^3 divided by two. Can someone give me the first step, and I'll see if I can get it from there. I don't want to make you just do the

62. ## Foreign languages

I hope you can check these two long-winded sentences.Thank you 1) Pamela is writing to her family to tell her mum what happened to her, by accusing her master of hsi behaviour. 2) While they were in the summer house, Mr B kissed her but she had never

63. ## math

Find n if S(sub n) is approximately 15,408.15.

64. ## math

Twenty people apply for seven jobs that are available at fly by night aircraft company In how many ways could such a group be composed? After the seven have been selected, in how many different ways could five of them be assigned to the assembly

65. ## math

What is the gerund phrase and noun function of the gerund in these sentences: 1.Brett earns his income by repairing cars. 2.I enjoy playing the piano. 3.Her favorite pastime is entertaining friends. 4.She is successful in mimicking others' voices. 5.He

66. ## education

projected instructional material and their uses

asked by opara ngozi
67. ## physics

5. If a quantity increases as a second quantity decreases and decreases as the second quantity increases, the two quantities are said to be: A_Directly proportional B_Inversely proportional C_Completely unrelated D_Blue and red

68. ## Meterology

What is the relative humidity when the air temperature is 75 degrees Fahrenheit and the Wet Bulb temperature is 65 degrees Fahrenheit?

69. ## Physics

A railroad car moves under a grain elevator at a constant speed of 3.70 m/s. Grain drops into the car at the rate of 580 kg/min. What is the magnitude of the force needed to keep the car moving at constant speed if friction is negligible? F = Ma -> R *

70. ## Roles of the Early Childhood Professional

Observation of children are useful for all of the following reasons EXPECT:

71. ## English

He must like studying calculus. Whats the noun function?

72. ## physics

A tennis ball is thrown horizontally at a speed of 10 m/s from the top of a building 78.4 meters high. How long does it take the ball to hit the street?

73. ## Physics

A long pole is used to lift a window. If a vertical lift of 80N is needed to raise the window, what force must be exerted along the pole? Assume the pole makes an angle of 34 degrees with the vertical wall.

74. ## Biostatistics HW

Consider again the data in problem #6. Suppose that in the aerobic exercise group we also measured the number of hours of aerobic exercise per week and the mean is 5.2 hours with a standard deviation of 2.1 hours. The sample correlation is -0.42. Exercise

75. ## Math

V=(1/3)*3.14*[(5/2)^2]*7

76. ## Math

What is the smallest positive integer n so that 3n squared is a multiple of 4

77. ## Math

Suppose that f(A,B,C) means A-2C + (1/2)AB A. Find f(2,3,-11) B. Find f(D,5,D) C. Find f(3,4,f(-5,7,4))

asked by Cyndy f
78. ## history

Philadelphia, Pennsylvania was NOT _____.

79. ## Spanish

33. "¿Quieres ayudarnos a _______ periódicos?" "No puedo. Tengo que estudiar esta tarde." a. ganar b. soler c. repartir d. desayunar C 35. "Tienes mucha hambre, ¿verdad?" "Claro que sí. Voy a comer ____ dos hamburguesas." a. según b. sin c. antes de

80. ## history

Which is NOT true of the segregation laws passed after the Civil War?

81. ## Statistics

A lottery uses 4 urns containing chips 0 to 9. One chip is selected at random from each urn. How many sample points are in the sample space?

82. ## vulindlela

How smoking is a human factor that may cause ill health

83. ## Math

Charlie is making a toy silo for his children. The silos height is three times it's radius. He is also adding a dome shaped top that is a half sphere. If the total surface area of the silo, when assembled is 100 square inches , what is the height of the

84. ## Geometry

Triangle RSU has two of its points(R and S) on the sides of a circle. Line SU forms a secant ray that passes through the diameter of the circle. Angle S is 30 degrees, the measure of arc RS is 84 degrees, and RU is tangent to the circle at R. Find the

85. ## math

do you have the answers to exam 06044200

86. ## Intermediate Algebra

Essay: show all work. Find the quotient: 49a^2-b^2/7a-b

87. ## writing

please read over my paper for errors?

88. ## Chem

How many grams are in 2.6 moles of Maganese? What is the mass of 14.7 moles of H2O? What is the mass of 7.2 Liters of H2O?

89. ## CHEMISTRY

2NaBrO3 reacts to 2NaBr + 3O2 How many grams of NaBrO3 are required to produce 19 grams of O3? How many liters of 02 are produced from 4 moles of NaBrO3? How many atoms of NaBr are produced when 1 mole of O2 is produced?

90. ## Life orientation

In which ways can human/environment can affected by substance abuses?

91. ## Life orientation

Recommendations on how to address substance abuses

92. ## Accounting

Susan Kline works for Trend Press, a fairly large book publishing firm. Her best friend and rival, Lisa, works for Silver Books, a smaller publisher. Both companies issue \$100,000 in bonds on July 1. Trend's bonds were issued at a discount, while Silver's

93. ## phy

Your instructor asks you to compare positive and negative reinforcement and explain your conclusions in class. What will you report?

94. ## math

For the sequence 3,8,15,24,35.... find a formula for tsubn in terms of n.

95. ## religion

Hello, for in the book of Phillipians in chapter 2 would it relate to the Ethical code of principal with psychologists under principle C integrity and for general principle would it be number 3 human relations thanks

96. ## Functions

What's the best way to solve functions? I can do basic ones, but have trouble with the harder ones. I'm having trouble with the following: Inputs x 1, 2, 3, ? Outputs y 0, 2, 6, ? I have tried everything and can't come up with the equation. Please help!

97. ## math

Find S(sub 73) for the arithmetic series 4 + 7 +10....

98. ## chemistry

C25H52 + __38__ O2 -------> __25__ CO2 + __26__ H2O + energy a) Balance the equation. Count atoms below. ___________ carbon ___________ ___________hydrogen___________ ____________oxygen____________

99. ## Art

Could you please check these sentences, too? Thank you very much. 1) The Augustan were interested in real life. As for politics/as far as politics is concerned, the two main political parties were the Tories and the Whigs. 2) The poor used to live in

100. ## math

Evaluate 7 Σ (-1)^k(k-1) k=2

101. ## biology

Need help with FOV area (mm2) totally confused? im confused i have the FOV diameter they are: 4x = 5 10x = 2 40x = 0.5 a classmate told me she thinks the area for 40 x is: pi(5/2)^2 = 19.6 not sure if that's true or how to do it for the low and medium,

102. ## isep - fisica

b) quantidade de acelaracao no ponto b. o ponto b é um cursor que esta preso no cimo de uma barra que esta dentro de outra barra . como e que calculo a quantidade de acelaracao neste caso uma vez que ha acelaracao de coriolis

103. ## 3 grade english ms sue

srffixes rocky,foolish,rainy,childhood,selfish, treatment,movement,neighborhood, childish,parenthood,crunchy,bumpy, payment,sleepy,shipment opposites write the missing list word.it will be the opposite of the underlined word. 1- this lizard's skin is

104. ## math

Find a decimal approx for S (sub 15) in the geometric sequence with first term 83 and common ratio 1.07

105. ## 3 grade math ms sue

use tools 1-when using fraction strips, how do you know that two fractions are equivalent? _______________________________ ______________________________ _______________________________ _________________________________ ________________________________ 2-

106. ## History

What were the special characteristics of the population of Virginia in the seventeenth century and what accounted for them?

107. ## World History

At the end of the eighteenth century, _______ had the largest economy in the world. A. India B. Spain C. China D. Britain I've researched this question like crazy, but I just can't seem to determine a clear answer. I know it's between China and Britain.

108. ## Math

What is the smallest integer n so that the square root of 3n is a multiple of 4

109. ## History

What were the causes of the War of 1812? Where did Republicans and Federalists stand on declaring and then fighting the war? What regional tensions did the war expose?

110. ## Chemistry

Which of the following is exothermic? A.boiling of water B.person growing C.choppening of tree D.freezing of water

111. ## Math

A company charges \$42 per cubic yard of concrete. How much will it cost to pour a sidewalk that is 45 inches wide, 70 feet long, and 4 inches deep?

112. ## Physics

1) Which components remain constant throughout the motion? vx = x component of the velocity vy = y component of the velocity ax = x component of the acceleration ay = y component of the acceleration I know that ax and ay remain constant but I am not sure

113. ## algebra 1

4/x-5 + 2/(x-5)^2

114. ## Math

2 part question 1) a cone shaped paper cup has a height of 7 inches and a diameter of 5 inches. What is the volume of the cone? Round answer to the nearest hundredth. 2) if we collect rainwater in the cup in question 1 until the waters depth is 6 inches,

115. ## dressmaking

EXAMINATION 04202500 ALTERATIONS AND FITTING I NEED TO CHECK 5 ANSWER, (1) The shoulder seam of the garment with a set-in sleeve is usually located so that it is (A) easily seen in a straight back view, (b) clearly visible in a straight front view.(C)in

116. ## Foreign languages

I urgently need you to revise these sentences. Thank you very much, Writeacher. 1) We are leaving for Rome tomorrow morning at 7.30 am. 2) We are meeting at the entrance of the bypass (ring road/orbital road) at 7.15 3) The bus journey will last about six

117. ## Math

find the surface area of a rectangular prism that is 3 1/2 feet by 4 1/4 feet by 6 feet

118. ## physics

What is the velocity of an object that falls from a cliff tot he ground which is 20,000 centimeters below?

119. ## Math

A 4in. by 5in. photo is enlarged by multiplying the length and width by 2. What is the new perimeter?

Sorry, I forgot to enter all the info before. Below is the updated info for the problem. What's the best way to solve functions? I can do basic ones, but have trouble with the harder ones. I'm having trouble with the following: Inputs x 1, 2, 3, 4, 5

121. ## algebra 1

simplify 3w-12/3w

122. ## algebra 1

w/7 - 7/w = 0

123. ## algebra

Two part question: Suppose a market research company finds that at a price of p=\$25, they would sell x=56 tiles each month. If they lower the price to p=\$20, then more people would purchase the tile, and they can expect to sell x=66 tiles in a month's

asked by plz help
124. ## Art

Could you please have a look at these sentences? Thank you very much, Writeacher. 1)We'll go on a bus sightseeing tour on which we'll admire the most famous attractions. 2) We are given a lunch box (by the hotel). 3) In the afternoon we'll go to the newly

125. ## algebra

The costs of doing business for a company can be found by adding fixed costs., such as rent, insurance, and wage, and variable costs, which are the costs to purchase product you are selling. The portion of the company's fixed costs allotted to this product

asked by plz help
126. ## Physics

Help, I know the answer is 4.8 X 10^-19, but I can not figure out how to do it or what formula to use. The question is "A charge moves a distance of 1.7 cm in the direction of a uniform electric field whose magnitude is 220 N/C. As the charge moves, its

127. ## pre calc

log(x^2+2x-3/x^2-4)-log(x^2+7x+6/x+2)

128. ## math

10 pesos = .909198 US dollars. Use estimation and rounding to find out how many US dollars equal 200 pesos. B) how many pesos approximately are 4 US dollars?

129. ## Algebra

Log to the base of 3 (x-4)=2

130. ## Antigone Literature

Creon criticizes others for stubbornly refusing to change their minds. Why is this ironic? I believe its ironic because everyone is so caught up in what they think is right, including Creon. I just want another persons opinion on why they think its ironic!

131. ## Cultural Anthropology

Traditionally, a caste in India

132. ## math

large fresh salad = \$4.43 shrimp tomato cocktail = \$7.39 hot dog and fries = \$13.86 vanilla cheese- cake \$6.97 cola \$2.24 Do rough estimate to find out how much it will cost by rounding to the ones place and adding the amounts. Then decide you want to be a

133. ## math

4 shirts cost \$76, what is the cost of 75 shirts.

134. ## math

translate the fact below from scientific notation to standard notation: A. 1.07 times 10 to the eighth power B. 7.07 times 10 to the second power C. 2.4 times 10 to the negative three power

135. ## Math

A 3m tall post casts a shadow 2m long . If a tree casts a shadow 9m long at the same time how tall is the tree ?

136. ## math

take the fractions below, write them in their simplest form, then come up with three equivalent fractions for each: A. 88/100 B. 24/30 C. 55/88

137. ## writting out clock time

How do I write 1 minute 45.9 seconds? Is it 1:45.9 or is that one hour 45.9 seconds?

138. ## physics

A 0.700-kg ball is on the end of a rope that is 2.20 m in length. The ball and rope are attached to a pole and the entire apparatus, including the pole, rotates about the pole's symmetry axis. The rope makes an angle of 70.0° with respect to the vertical

139. ## math

write 211 four different ways using exponents. Make sure at least one of your answers includes a negative sign and one of your answers invovlves multiplying exponents.

140. ## math

15840ft = _________mi 24640 yd = ________mi

141. ## algebrall

How do you solve 600x^2+600x+600=0

142. ## chemistry

A 20.0 gram sample is a mixture of sodium phosphate ,sodium mono-hydrogen phosphate,sodium dihydrogen phosphate and sodium chloride. The sample is dissolved in 100.0 ml of deionized water and titrated with 1.5 M hydrochloric acid. The initial pH of the

143. ## Grade 11 Math

I have two questions two forest fire towers, A and B are 20.3km apart. From tower A, the bearing of tower B is 70 degrees. The ranger in each tower observes a fire and radios the bearing from the tower. the bearing from tower A is 25 degrees and from tower

asked by Billy Bob
144. ## chemistry

A sample of a saturated hydrocarbon is placed in a 1.0L vessel at 107oC. The pressure of the sample at these conditions is .40 atm. A stoichiometrically equivalent amount of oxygen is added to the vessel and the mixture is combusted. Following combustion,

145. ## algebra ll

600(x^2+x+1) using the formula -b+/- sqrtb^-4ac/2a

146. ## math: advanced geometry

a sphere has a volume of 12,348pi cubic inches. Find the surface area of the sphere.

147. ## Geometry

A regular hexagon is circumscribed about the ring surrounding the clock face. The diameter of the ring is 10in. Find the perimeter if the clock face. Please included work/steps to solve. Thanks!

148. ## circle inscribed

--------------- QUESTION FOLLOWS -------------------------- Can someone Please help I definitely do not know how to do this. A)Find x, to find x you need to add the arc measures together and set the expression equal to the total degrees of circle then

149. ## algebra 2

Minnie and Steve have arectangular swimming pool that is 12 ft. wide and 20 feet long. They are going to build a tile border of uniform width around the pool. They have 160 sq. ft. of tile. How wide should the border be?

150. ## writing

when writing a letter to a pen pal, what is the closing? Please Write back?

151. ## algebra

i have to write a number in the block to make this true how do i get the answer for 70-30=40- please show me a example so i can complete my work

152. ## geometry

the radius of the base of the metallic rod is 2o centimeters and height 15 centimeters what is the volume of a cylinder

153. ## math

How do I draw a figure with a perimeter of 15 cm?

154. ## English

What do you think he is doing? 1. I think he is playing computer games on the computer. 2. I think he is playing a computer game on the computer. (Which answer is right? Do we have to use the singular form or the plural form?)

155. ## geometry

the radius of the base of the metallic rod is 2o centimeters and height 15 centimeters what is the volume of a cylinder

156. ## science

why are plastic handles on frying pans safer to than metal handles

157. ## math

The ratio of dogs to cats in a park is 4 to 5. If there are 63 dogs and cats in the park altogether then how many dogs are there?

158. ## Geometry

If the two lines are perpendicular, what is x + y 2y- 10 2x+1

159. ## college math

Solve the quadratic equation by completing the square. x^2 + 14x + 35 = 0 and x^2 + 8x = 5

160. ## to ms.sue

my teacher said we cant use that.

161. ## algebra

A customer wants to make a teepee in backyard for his childrens. He plans to use lengths of PVC plumbing pipe for the suppports on the teepee,and he wants the teepee to be 10 feet across and 12 feet tall. How long should the pieces of PVC plumbing pipe be?

asked by plz help
162. ## English

1. The man is drawing cartoons on a drawing board. He has a pen on his right ear. What do you think he is doing? (Would you check this writing?) 2. The dogs are playing with balls. 3. Each dog is playing with a ball. 4. The dogs are playing with a ball.

163. ## English

1. Let's do some role play. You take the part of A, and you take the part of B. Don, will you start? OK. Good job.Then switch the role. Emily, this time, you should start first. 2. Let's roleplay. Don, play the part of A. Emily, play the part of B. Don,

164. ## to ms.sue

my teacher said you don't know this person yet and it has 2 be please write back. she get s mad if we judge it differently, i don't know why.

165. ## Science

A man has a mass of 66kg in the Earth. What is his weight?

166. ## English

Be quiet. Listen to me. Emily, calm down. You are so noisy. Stand up and go to the back. You should remain at the back for the rest of the class. Got it? (Would you check the sentences? Correct errors, please.)

167. ## Computer programming

Set k=1 While k

168. ## to ms.sue

thank you. :)

170. ## physics mc question!!!!HELP

Question # 1 : It a particle increases its speed by a factor of 2, what happens to the kinetic energy? a)doubles b)cuts in half c)increases by a factor of 4 d)depends on whether or not work is done on the particle Question # 2: An object falling near the

171. ## Chemistry

what elements are found in the following substances? C6H12O6, NaCl, NaHCO3

172. ## algebra

it will take 100 persons - hours to plant trees around a middle school. how many hours will it take 20 people to plant trees?

173. ## English

1. She is talking with her friend in a boat/on a boat. (Which preposition should we use? 2. They are jumping from the ground. 3. They are jumping on the ground. (Which preposition do we have to use? Are both OK?)

174. ## algebra!HELP!

a right triangle has legs 12 ft. and 5 ft. what is the length of the hypotenuse?

175. ## math

three times a number

176. ## programming

A retail company assigns a \$5000 store bonus if monthly sales are more than \$100,000 otherwise a \$500 store bonus is awarded. Additionally, they are doing away with the previous day off program and now using a percent of sales increase to determine if

177. ## History

What is the benelli super 90 12 gauge submachine gun?

178. ## statistics

How do you calculate the slope and intercept of a regression?

179. ## algebra

how do u write 3.45 * 10 to the 8 power in standard number?

180. ## Geometry (Mathematics)

The length of a rectangle is 15 m longer tan it's width. The perimeter of the rectangle is 74 cm. Find the length and width.

181. ## political science

the system of government in the state of CA can be described as : a.unitary system b.federal system 18).the constitution grants state governments: a. enumerated powers c.enumerated and defined powers

182. ## chemistry

a student determines the molar mass of methanol by the method used in this experiment. she found that the equilibrium temperature of a mixture of ice and pure water was .4 degrees Celsius on her thermometer. when she added 10g of her sample to the mixture,

183. ## computers

Write a program that will ask the user to enter a person's age, weight and birth month. Your program will compare the entered value to the following and print the appropriate response. Be sure to use modules. The secret answers: age=25 The comparison: if

The best physical activity is one that is a) enjoyable enough to bring a snack b) enjoyable enough to go to sleep c) enjoyable enough to do regulary d) all of the above

185. ## programming

A hotel’s occupancy rate is calculated as follows: Occupancy rate = number of rooms occupied total number of rooms Write a program that calculates the occupancy rate for each fl oor of a hotel. The program should start by asking for the number of fl oors

186. ## Word Problems

Joe has \$19 more than Erin, Shelly has twice as much as Erin; Colin has \$6 less than Erin has. In total, the students have \$68. How much money does each separate student have?

187. ## mc questions !

Q:Which of the following are expressions for a type of potential energy? ( this question can have more than one answer !!!! ) a)mg(h_F-h_i) b)F_f*d c)(1/2)mv^2 d)(1/2)k*(final_x^2-initial_x^2) Q: If you are trying to figure out how high you can jump, which

188. ## phyics mc Q

Q:Which of the following are expressions for a type of potential energy? ( this question can have more than one answer !!!! ) a)mg(h_F-h_i) b)F_f*d c)(1/2)mv^2 d)(1/2)k*(final_x^2-initial_x^2) Q: If you are trying to figure out how high you can jump, which

189. ## Algebra 2

If Graham runs up 6 steps of the escalator, then it takes him 46.5 seconds to reach the top of the escalator. If he runs up 13 steps of the escalator, then it takes him only 36.0 seconds to reach the top. How many seconds would it take Graham to reach the

190. ## math

On a loan of \$3,500, Manny had to pay \$280 interest. The Interest was what percent of Manny's loan?

191. ## College Math

Add 5 1/4 + 3 1/9

192. ## College Math

Subtract 10 3/5 - 2 10/11

193. ## statistics college

suppose we have a set of blood pressure set with a mean of 120 systolic and a sample standard deviation of 20 points assume a normal distribution of what two values should 95% of all systolic bp lie

194. ## Math

what is (7.21-3.13)4th power divided by 0.6-0.4?

195. ## statistics college

find the range standard deviation and variance for following sample data 2,11,81,29,22,59,78,71,21,43,99,12,38,74,56,81

196. ## math

Lois got 27 problems right on a math test. If this is 90% of the test, how many problems were on the test?

197. ## statistics college

SATI SCORES AROUND THE NATION HAVE A MEAN SCORE AROUND 500 A STANDARD DEVIATION OF ABOUT 100 POINTS AND ARE APPROXIMATELY NORMALLY DISTRIBUTED A PERSON WHO SCORES A PERFECT SCORE OF 800 ON THE SAT I HAS APPROXIMATELY WHAT PERCENTILE RANK WITHIN THE

198. ## chemistry

If 500.0 mL of hydrogen are collected over water at 20.0 C and 99.3 kPa what will the volume of the dry gas be at STP?

199. ## programming

Write a program that will ask the user to enter a person's age, weight and birth month. Your program will compare the entered value to the following and print the appropriate response. Be sure to use modules. The secret answers: age=25 The comparison: if

200. ## math

Tia has 24 black or white buttons. She has 10 more white buttons than black buttons. How many white buttons does Tia have?

201. ## physics

A model of a helicopter rotor has four blades, each 3.40 {m} in length from the central shaft to the tip of the blade. The model is rotated in a wind tunnel at 580 {rev/min}. What is the radial acceleration of the blade tip, expressed as a multiple of the

202. ## Chemistry

What is the mass of 14.7 moles of H2O? What is the mass of 7.2 Liters of H2O?

203. ## physics

A lazy Susan consists of a heavy plastic disk mounted on a frictionless bearing resting on a vertical shaft through its center. The cylinder has a radius R = 10 cm and mass M = 0.24 kg. A cockroach (mass m = 0.015 kg) is on the lazy Susan, at a distance of

204. ## Algebra 2

A data set has the following point: (1,8)(2,7)(3,5) The slope of the linear regression line is -1.5 Find the y-intercept of the linear regression.

205. ## social studies

what does this sentence mean im doing a project on queen eilzabeth i *how did his or her work signal a rebirth or show an interst in humanity?

206. ## Biomaterials

What is the theoretical density of tantalum (Ta) with the following characteristics: Crystal structure:     BCC Atomic radius:         14.6 Angstroms Atomic weight:        180.9 g/mol density needs to be in g/cm^3

207. ## math

another type of percents im havin trouble with, i know im close to figuring it out but cant quite get there... "there were 130 people in a school auditorium to listen to a political candidate. This reprsents 33 1/3% of the capacity of the auditorium. How

208. ## math

another type of percents im havin trouble with, i know im close to figuring it out but cant quite get there... "there were 130 people in a school auditorium to listen to a political candidate. This reprsents 33 1/3% of the capacity of the auditorium. How

209. ## Algebra

Why does the inequality sign change when both sides are multiplied or divided by a negative number? Does this happen with equations? Explain

210. ## algebra

the costs of doing business for a company can be found by adding fixed costs, such as rent, insurance, and wages, and variable costs, which are the costs to purchase the product you are selling. The portion of the company's fixed costs allotted to this

asked by plz help
211. ## physics

A 0.700-kg ball is on the end of a rope that is 2.20 m in length. The ball and rope are attached to a pole and the entire apparatus, including the pole, rotates about the pole's symmetry axis. The rope makes an angle of 70.0° with respect to the vertical

212. ## Algebra 2

A retail lumberyard plans to store lumber in a rectangular region adjoining the sales office. The region will be fenced on three sides and the fourth side will be bounded by the wall of the office. Find the dimensions of the region if 350 feet of fencing

213. ## math

Mrs. Cindy needs to order new balls for the school students to use at recess. She asks the students what balls she should order. One-third of the students want Mrs. Cindy to order soccer balls. One-third of the students want Mrs. Cindy to order

214. ## math

whats is the radius of 7.5 by the square root of 11 plus or minus 3 ?

215. ## chemistry

What is the molarity of the solution produced when 14.1 grams of ammonia is dissolved in sufficient water to prepare .100 liters of solution?

216. ## chemistry

Zinc reacts with hydrochloric acid according to the following equation: Zn + 2HCl --> ZnCl2 + H2 If 3.63 grams of zinc react, how many grams of zinc chloride is produced?

218. ## trig

Find all solutions of cos 2x + √2/2 =0. a) + or - 3/8pi +Kpi b) 2/3pi + Kpi, 5/3pi + Kpi c) + or - 2/5 +Kpi d) 2/3 pi + 2Kpi, 5/3pi + 2Kpi I really need help on this question :(

219. ## algebra

If events A and B are independent, P(A) = 0.62, and P(B | A) = 0.93, what is P(B)?

220. ## Calculus

A tank contains 2920 L of pure water. A solution that contains 001 kg of sugar per liter enters a tank at the rate 4 L/min The solution is mixed and drains from the tank at the same rate. (a) How much sugar is in the tank initially? (b) Find the amount of

221. ## physics!

while running a marathon, alex is producing about 900 calories per hour. 1 calorie is 4184 j. if the specific heat of the human body is 3500 j/kg x c, how many degrees celsius would alexs temperature increase if he did not sweat and ran the marathon in 3 h