# Questions Asked onMarch 1, 2012

1. ## physics

A 65.0-kg runner has a speed of 5.20 m/s at one instant during a long-distance event. (a) what is the runner's kinetic energy at this instant? (b) if he doubles his speed to reach the finish line, by what factor does his kinetic energy change

2. ## ap

in an AP, if the 5th and 12th terms are 30 and 65 respectively. what is the sum of first 20terms

3. ## CHEMISTRY!!!=0

Determine pH of each solution: b) 0.20 M CH3NH3I I did.... CH3NH3^+ +H2O -> CH3NH2 + H3O^+ 0.20 ---------------0--------------0 0.20-x--------------x------------x so i got... ? =x^2/0.20-x i looked up in the back of the book and found the Kb of CH3NH2 to

Assume a bank loan requires a interest payment of \$85 per year and a principal payment of \$1,000 at the end of the loan's eight-year life. a) How much could this loan be sold for to another bank if loans of similar quality carried a 8.5 percent interest

5. ## PHYSICS HELP!!!!!!!

You walk 50 m to the north, then turn 60° to your right and walk another 45 m. How far are you from where you originally started?

6. ## Math

Mattie drove 140 miles in the same amount of time that it took a tubropropeller plane to travel 520 miles. The speed of the plane was 190 mph faster than the speed of the car. Find the speed of the plane

7. ## chemistry

Which of the molecules can form a hydrogen bond with a water molecule? 1. CH3OH 2. CH2=CHCH3 3. CH3CH2SH 4. CH3OCH3

8. ## Decimal division

If you were going to solve 0.7 divided by 0.0035 what would you write down on paper step by step?

9. ## Calculus theory

Determine if the statement is always true, sometimes true, or never true. If y is a function of x, and is also a function of t. then dy/dx = dy/dt explain. i think its sometimes true but i don't know why it is. am i right?, and can you please explain me y

10. ## math

how do you make 87 cents with 6 coins none of which are half dollars

11. ## chem

is a solution containing 35g of NaCl per 100g of water at 25 degrees Celsius, saturated, unsaturated, or supersaturated

12. ## math

there were 490 altogether in 2 groups. group A consited of only boys and group b constied of only girls. ther were 2 and a half times as many girls as boys. some girls joined group b and foe every 4 boys in group a 32 more boys jioned the group. the total

13. ## electrical

6.A resistor R1 dissipates power P when connected to a certain generator with voltage V. If a resistance R2 is put in series with R1 the power dissipation by R1 A) Decreases B) Increases C) Remains the same D) Any of the above depending upon the value of

14. ## History-The Early Greeks

How did early Greek civilizations use their natural surroundings to prosper and grow?

15. ## chemistry

How many calories must be supplied to 59 g of ice at −6 C to melt it and raise the temperature of the water to 61 C? The specific heat of ice is 0.49 kcal/kg · K and of water is 1 kcal/kg · K; the heat of fusion of water is 79.7 kcal/kg, and its heat

16. ## Trig FInd Translation Rule and Coordinates Thanks!

The vertices of a rectangle are R(–5, –5), S(–1, –5), T(–1, 1), and U(–5, 1). After translation, R' is the point (–11, –11). Find the translation rule and coordinates of U'. (x, y)--> (x – 6, y + 6); (–11, 7) (x, y)--> (x – 6, y –

17. ## math/ geometry

Write the statement in symbols using the p and q given below. Then construct a truth table for the symbolic statement and select the best match. p = At most, 100 guests arrived at the wedding reception. q = There was a lot of cake left over. It is not the

18. ## ap chemistry

what volume of 0.0100 M NaOH must be added to 1.00 L of 0.0500 M HOCl to acheive a PH of 8.00?

19. ## Geography

What are factors leading to growth in lagos: Geographical Economic Political

20. ## chemistry

Current is applied to an aqueous solution of lithium sulfide. What is the cathode and what is the anode?

21. ## arithmetic

an ap consists of 21 terms.the sum of 3terms in the middle is 129 and of the last three is 237 find the AP.

22. ## arithmetic

an ap consists of 21 terms.the sum of 3terms in the middle is 129 and of the last three is 237 find the AP.

23. ## statistics

When someone buys a ticket for an airline flight there is a 0.0995 probability that the person will not show up for the flight (based on data from the IBM research paper by Lawrence, Hong, and Cherrier). An agent for Air America want to book 24 persons on

24. ## geometry

chung ho is standing on the top of a building that is 135m tall. The angle of depression to the top of the building next door is 71 degrees. The angle to the base of the building is 77 degrees. The buildings are 31m apart. How tall is the other building?

25. ## Algebra 2

If there are initially 1500 bacteria in a culture, and the number of bacteria double each hour, the number of bacteria after t hours can be found using the formula N=1500(2^t). How many bacteria will present after 7 hours? I think the answer is N=192,000.

26. ## HELP!!!!

a pioneer family plans to build a barn.they will need 12 large support posts along each side wall and 8 posts along both the front and back walls.they can cut the two posts from each tree that they chop down.How many trees should they chop down?How did you

27. ## Math

Point B is 10 KM north of Point A and Point C is 10 Km from B on a bearing of 060 from b. Find the bearing and distance of C from A

28. ## chem

How much heat is required to heat 0.1 g of ice at −30 degrees C to steam at 100 degrees C

Which third party is an example of an economic protest party? 1.)The Green Party 2.)The Populist Party 3.)The Independent Party My answer3.)The Free Soil Party

30. ## Contract Law

1. Herb Appleseed had a contract with Abrams Stores to deliver one thousand boxes of candied fruit for a St. Valentine’s Day sale. He was the deliver the fruit by 1:00PM on Friday, the 4th of February. He drove up to the Abrams store at 1:00PM and found

31. ## chem

How much heat is required to heat 0.1 g of ice at −30 C to steam at 100 C? Use the approximate values below for your calculation. cice = 2 J/g · C csteam = 2 J/g · C cwater = 4 J/g · C Hvap = 2, 260 J/g Hfus = 340 J/g

32. ## calculus

Given y^4 -x^4=16 find and simplify d2y/dx2 using implicit differentiation. I got the first derivative which was x^3/y^3 and no im am stuck on using implicit differentiation for the second derivative part

33. ## physics

Determine the velocity of a satellite orbiting Earth at a height of 3.2 x 10^3 meters.

34. ## math percents

Can you check these? 18% of 90 is what number? i got 16.2 what number is 41% of 800? i got: 1951.22 what number 5% of 522? i got : 10440 70% of 279 is what number? i got: 195.3 what number is 90% of 13? i got : 14.44 9% of 351 is what number? i got: 32 36%

35. ## physics

A balloon rubbed against denim gains a charge of -9 µC. What is the electric force between the balloon and the denim when the two are separated by a distance of 5 cm.

36. ## Word PROBLEM

if an animal is h high at the shoulder, the the number of steps per second that the animal takes while walking is estimated by N(h)=1.6^1/2...estimate the stepping frequency of a dog that is 1.9 feet high at the shoulders

37. ## Math

If a voter in the poll is selected at random What is the probability that he or she voted for Phil Montoya? Phil- 400 Eric-260 Alice-340

38. ## math

find the value of x. round to the nearest tenth. when the the inside is 35 degrees and the other angle is 90 the outside hypotenuse is 20 and x

39. ## psychology

a condition of late adulthood in which the pressure in the eye increases

40. ## Math

a chemist has an 18% acid solution and a 36% acid solution. How many liters of each of these solutions should be mixed together to make 24L of 30% solution? Enter two numbers separated by a comma

41. ## Chemistry

Sometimes as a solute dissolves in a solvent, the solute molecules dissociate to some extent. Sometimes solute molecules associate to form larger molecular units, such as dimers or trimers. Discuss the effect of dissociation and of association on the

42. ## chemistry

How do you balance a chemical reaction word equation?!

43. ## Statistics

Explain how to calculate margin of error. What effect does increasing your sample size have on the margin of error? What effect does it have on the confidence level? What effect does it have on the confidence interval?

44. ## math

Estimation:A creek runs along a distance of 16,300 feet. About how many miles long is the creek?

45. ## algebra

how do i simpllify 5/x + 4/x^2 - 3/x^3

46. ## alebra

how do i simplify 3m+n/4n^2m + 3m +n +5/4n^2m

47. ## Algebra

Hint: Pay attention to the units of measure. You may have to convert from feet to miles several times in this assignment. You can use 1 mile = 5,280 feet for your conversions. 1. Many people know that the weight of an object varies on different planets,

48. ## english

Why don’t the narrator and the other man want to hold Edward for ransom? Is their motivation internal or external?

49. ## Calculus

If f(x) has zeros at x=a, and x=b, the x coordinate of the turning point between x= a and x=b is 1/2(a+b). PLease help i don't understand this!

50. ## Physics

Workers have loaded a delivery truck in such a way that its center of gravity is only slightly forward of the rear axle, as shown in the drawing. The mass of the truck and its contents is 6675 kg. Find the magnitudes of the forces exerted by the ground on

51. ## probability

A number is selected from 1 to 27.fing the probability that is a prime number?

52. ## Tax Intro

The taxpayer's spouse died at the beginning of 2010. He has no qualifying child. Which status should the taxpayer select when filing his tax return for 2011? A. Single B. Married Filing Separately C. Married Filing Jointly D. Qualifying Widow(er) is it D

53. ## chem

At standard pressure, ammonia melts at 195 K and boils at 240 K. If a sample of ammonia at standard pressure is cooled from 200 K down to absolute zero, what physical constants are needed to calculate the change in enhtalpy? I) the heat capacity of

54. ## chemistry

What are the accepted values for the number of moles of NaCl that are produced from HCl and the following various amounts of grams of NaHCO3; 0.25 grams 0.5 grams 1 gram Please Help!

55. ## american goverment

What form of Federalism was most recently associated with the United States? . . can somebody help me please!! thanks

56. ## English

What do you think about my essay? "A little bit longer and I will be fine" “..And you do not know what you got until it is gone, and you do not know what i s like to feel so low...” A quote written by Nick Jonas to express how he felt after being

57. ## Statistics

Why do so many of life's events share the same characteristics as the central limit theorem?

58. ## Stats

Explain how to calculate margin of error. What effect does increasing your sample size have on the margin of error? What effect does it have on the confidence level? What effect does it have on the confidence interval?

59. ## math

the radius of a circular garden is 15ft. about how much fencing will be needed to go around the uoter edge of the garden?

60. ## physics

Jessica, who mass is 55 kg, is 3.50 meters away from a 0.20 kg bag of Fig Newtons. What is the gravitational force between Jessica and the cookies?

61. ## math

What is the value of the output for the function, g(c) = 19 c2, if the input is 4?

62. ## Maths

How do you draw an angle ABC , with A=35, AC=6cm and C=65?

63. ## math

The equation y = 400(1.03)x is an example of

64. ## Math

Each fire hose is 25 yards long. What is the minimum number of hose for a 230 ft distance? (I think I have to convert 230 ft into yards which is 76.666 yards. So I think I need a miminum of 4 hoses. ) Am I correct?

65. ## physics, help with circuits please!

Can the voltage across any of the three components in the R-L-C series circuit ever be larger than the maximum voltage supplied by the AC source? That maximum voltage is 50 volts in this situation. Also, does Kirchoff's loop rule apply to this circuit? In

66. ## physics

What is the volume of a metal which weighs 28g less in kerosene and the densty is 800 kgm3 than it does in air

67. ## ACCT

The question is: In the journal provided, prepare year- end adjustments for the following situations. Omit explanations. a. accrued interest on notes receivable is \$105 b. of the \$12,000 received in advance of earning a service, one third was still

68. ## algebra

find each probability if you pick a card, do not replace it, then pick a second 3 white cards 5 black cards and you pick black, then white

69. ## PHYSICS ARGENT!!!

Determine the scalar product of A= 3.0i + 1.0j - 2.0k and B= 3.0i - 2.0j - 3.0k

70. ## principles of colors

To slightly gray paint has an intense blue value what color would you add to achieve the value you want A red b orange c yellow d green

71. ## english

Which sentence is passive voice? 1. The clerk made five errors. 2. Susan had been in sales for five years. 3. She asked for an adjustment. 4. The report was completed by the entire team.

72. ## chemistry

Do hydrogen bonds form between methanol (CH3OH) molecules?

73. ## Physics

A block rests on a horizontal, frictionless surface. A string is attached to the block, and is pulled with a force of 45.0 N at an angle è above the horizontal, as shown in Figure 7-23. After the block is pulled through a distance of 1.50 m its speed is v

74. ## math

Rewrite using only positive exponents: x−5y3 how do you rewrite without negative exponents?

75. ## Math

For each point in a set of points, its distance from (-2,4) is three times its distance from the line x=6 1. find the equation 2. tell which conic section the graph will be.

76. ## Math

SIMPLIFY 1. ((x/4)-(1/x)) / ((1/2x)+(1/4)) VERIFY 1. secXsin2X = (2-2cos^2X)/sinX

77. ## Math mrs sue

Can you check these? 18% of 90 is what number? i got 16.2 what number is 41% of 800? i got: 1951.22 what number 5% of 522? i got : 10440 70% of 279 is what number? i got: 195.3 what number is 90% of 13? i got : 14.44 9% of 351 is what number? i got: 32 36%

78. ## math

In a particular small town, the population in 1995 was 1200. Ever since then the population has grown by 4% every year. If conditions stay the same, what is the approximate expected population in the year 2000?

79. ## algebra

Can someone please help. When graphing the equations y = 2x – 2, y = 2x, and y = 2x + 3, what observation can you make about the graphs. Can you make the same observation before graphing the lines? How? Thanks

80. ## Chemistry

For a one step reaction, the activation energy for the forward reaction is 40.0 kJ/mol and the enthalpy of reaction is -20.0 kJ /mol. Which statement below is true? a. The activation energy of the forward reaction would be affected to a greater extent than

I need someone to explain how to solve equations with two variables and tell me what the formula or equation is? Please help and explain. Thank you!

82. ## CHEMISTRY!!!=0

Determine pH of each solution: 0.20 M KI i don't know how you know if you use.. K+H2O->KOH + H or... I- +H2O--> HIO +H Im thinking this one... I- + H2O --> HIO + H 0.20M--------------------0-----------0 0.20-x------------------x-------------x there is a Ka

83. ## Chemistry

I can't figure out a clear way to write out the formatting of the question, but here is a picture. Any help is greatly appreciated. the image is on the website imggur and then then after imgur dot com its /Cus8o

84. ## Health

Maintaining a healthy diet can protect you from? A. Drug abuse B. Alcohol abuse C. Some cancers D. Sickle cell disease

85. ## Chemistry: Thermal Energy

Hi! I have a quiz tomorrow and there are a couple of things that I am confused about: -Why does heat cause convection currents in gases and liquids, but not solids? -How can one object feel warmer than another object if they are at the same temperature?

86. ## geometry

a sailboat has a sail which is shaped like a right triangle. The base of the triangle is 14 feet and the height is 20 feet. What is the area of the sail? The boat also has two smaller sails that are each half as large as the big one. How big is each of the

87. ## algebra

Simplify - 2 / (the 6th root of 81)

88. ## chemistry

do hydrogen bonds form between methanol (CH3OH) molecules? no, because methanol does not contain fluorine or nitrogen atoms yes, because methanol has a hydrogen attached to an oxygen atom may vary depending on the temperature

How are the numbers of electors for each state decided? 1.)Each state gets one elector. 2.)Each state gets two electors. 3.)Each state gets as many electors as it has senators. My answer4.)Each state gets as many electors as it has members of Congress.

90. ## Math

Adam has 245 stickers. He wants to put 25 stickers on 10 pages of his book. How many more stickers does he need?

91. ## Math

There are 24 students in Mrs.Smith's 1st block class. 1/4 of the class passed the math test with an A. 12 students in the class passed the math test with a B. What percent of the students in the class passed the test?

92. ## Applied Social Research Method

I need some help. For a class I need to do the following: Frame a proper research question and complete the following research processes: tell me your variables, define or conceptualize all you terms and variables, tell me what level of measurement you

93. ## Chemistry

Fluorine reacts with oxygen to yield oxygen difluoride. 2 F2(g) + O2(g) 2 OF2(g) What is the value of K if the following concentrations are found at equilibrium: [O2]= 0.200 mol/L, [F2]=0.0100 mol/L, and [OF2]=0.0633 mol/L

94. ## math

Vocabulary: What are the parts that make up a polynomial?

95. ## Spelling

Substitute a word beginning with re- for each of the underlined phrases. 1) The patient was(admitted again) after.. 2)I would like you to(copy this assignment)in.... 3) When the CD player broke I asked for my money (back again)

96. ## college implicit HELP!

I WANNA KNOW I'M DOING RIGHT. Find the slope of the tangent line to the curve √(3x+2y) + √(4xy)=11.6 at the point (6,4). THAT WHAT I DID: (3x+2y)^1/2+(4xy)1/2=11.6 next step: 1/2(3x+2y)^-1/2*y'+1/2(4xy)*y=0 y'= -(3x+2y)/(4xy) right?

97. ## Ff

The coefficient of static friction between the m = 3.50 kg crate and the 35.0° incline of Figure P4.41 is 0.340. What minimum force must be applied to the crate perpendicular to the incline to prevent the crate from sliding down the incline? Your response

98. ## chemistry

if we have 1 galon of C8H18 hom many galons of water will be produce?

99. ## calculus

Given the curve defined by the equation y=cos^2(x) + sqrt(2)* sin(x) with domain (0,pi) , find all points on the curve where the tangent line to the curve is horizontal

a.Smiling, Sven set his bow to ease as the wary doe ran back into the forest. b.A sudden snap of twigs alerted Sven to an advancing deer. c.Silently, Sven notched his bow with a slender arrow. Rate each sentence by degree of excitement in this manner:

101. ## geometry

A sphere has a surface area of 32in².If the diameter is halved, find the surface area.

102. ## Calculus

Please help this is due tomorrow and I don't know how to Ive missed a lot of school sick Consider the curve given by the equation x^3+3xy^2+y^3=1 a.Find dy/dx b. Write an equation for the tangent line to the curve when x = 0. c. Write an equation for the

103. ## Algera

Ms. Pecho currently owes \$637.50 simple interest on a loan of \$2500 at a anual inteest ate of 17%. How long has she had the loan?

104. ## Geolegy

How are fossils used as a tool to determine records of various events, such as the vanishing dinosaurs or our ancestors’ origin? What are the advantages of using fossils as an accurate measure of time? What are some limitations?

105. ## Language Arts EnglishIII

Identify the pronoun in the sentence below. Also identify the class and noun function of the pronoun using the abbreviations from the chart. For intensive pronouns, put NONE for noun function. Due to the large storm approaching, three students, Jamie,

106. ## eng

What is the pronoun in this sentence: Me Smith gave it one more try before giving up on the mower How does the noun function and what is the pronoun class?

107. ## arithmetic

in an AP, if the 5th and 12th terms are 30 and 65 respectively. what is the sum of first 20terms

108. ## math

how many inches are in 12 yards?

109. ## physics

wooden box weighing 271 N is pushed across the floor by a workman who exerts a horizontal force of 144 N. If the force of friction between the box and the floor is 28 N, what is the acceleration (in meters/second^2) of the box?

110. ## coordinate geometry

Find the value of x such that PQ=QR where the coordinates of P,Q and R are [6,-1], [1,3]and[x,8] respectively

111. ## Geography - Italy

My teacher gave us a reprt to do a brochure on italy such as currenices, goverment, sports, restaurants, and so far I have about 2 good website (withuout wikipedia!!!).

112. ## Physics

Traveling at a speed of 16.3 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 0.620. What is the speed of the automobile after 1.60 s have elapsed?

113. ## Geometry

The vertical slide ladder at the community swimming pool is 12.5 meters tall. The angle created by the top of the ladder and the top of the slide is 38°. Find the approximate length of the swimming pool slide to the nearest hundredth.

115. ## trig

Which expression is equivalent to cos(4x) + cos(2x)?

116. ## arithmetic

find the sum of all 3digits numbers ,which leave the remainder three when divided by 5.

117. ## arithmetic

I have a 10"x13" rectangle baking pan, 2" deep. I am having a party and need to know how many pieces can be cut for 50 people? Or how many can be cut?

118. ## math

a paper towel roll is shaped like a cylinder. it is 4cm wide and 28 cm tall. find its volume to the nearest tenth. use 3.14 for pi

119. ## physics

On an aerial photograph of a triangular piece of land the lengths of the three sides are 4cm, 5cm and 7cm. If the shortest side of the actual piece of land is 360 meters, find the lengths of the other sides

120. ## physics

a ball is thrown from level ground at 24 m/s, 30 degree above horizontal. How much time will it take to reach its maximum height? solution

121. ## chemistry

a 10.0L ballon contains helium gas at a pressure of 655mmHg, what is the new pressure, in mmHg, of the helium gas at 20.0L, if no change in temp or amount of gas

122. ## American Government

Name two of the many influential minor parties (also called third parties).

123. ## circles

OPQR is a rhombus , three of whose vertices lie on a circle with centre O.If the area of the rhombus is 32 root 3cm square ,find the radius of the circle.

124. ## PHYSICS

A highway curve with a radius of 750 m is banked properly for a car traveling 150 km/h. If a 1560- kg Porshe 928S rounds the curve at 240 km/h, how much sideways force must the tires exert against the road if the car does not skid?

125. ## Operations management

Tax Preparers Inc. works 250 days per year. The company uses adding machine tape at a rate of eight rolls per day. Usage is believed to be normally distributed with a standard deviation of three rolls during lead time. The cost of ordering the tape is \$10

126. ## Math

mariah bought a rectangular piece of land that was 3 miles long and 2 miles wide.She plans to divide into 2 sections of equal area. if she farms one of the sections how many square miles could be farmed?

127. ## physics

Imagine you are sitting in a car tossing a ball straight up into the air. a) If the car is moving at constant velocity will the ball land in front of, behind, or in your hand? b) If the car rounds a curve at constant sped where will the ball land?

128. ## chemisry

In order for a reaction to occur, particles must ______ in the proper _____ . What are the 2 words would be correctly fill in the blank? Thanks

129. ## Math

mariah bought a rectangular piece of land that was 3 miles long and 2 miles wide.She plans to divide into 2 sections of equal area. if she farms one of the sections how many square miles could be farmed?

130. ## art

Explain how Florence reflects the ideals of the dominant city-state and how some of the geographical, economical, social, and artistic forces shape this ideal. Use one example from Gardner’s Art through the Ages and one example from the Internet. I

131. ## chemistry

what is the difference between an inhibitor and a catalyst in a chemical process?

132. ## math

Need help Asap....with this wuestion for math>>>>>>> Mrs Garcia has a number cube with the following numbers on it: 4, 13, 8, 46, 8, 9. Whet is the probability that when she rolls it she lends on s factor of 8?...

133. ## Math

mariah bought a rectangular piece of land that was 3 miles long and 2 miles wide.She plans to divide into 2 sections of equal area. if she farms one of the sections how many square miles could be farmed?

134. ## Physics

A jet of water squirts out horizontally from a hole near the bottom of the tank, Assume that y = 1.19 m and x = 0.544 m. What is the speed of the water coming out of the hole?

135. ## statistics

You are studying the rate of incidence of skin cancer in people who live near the equator. Your survey of 200 people from the area has shown that 7 of them developed skin cancer. Provide a 99% confidence interval for the true rate of incidence.

136. ## Math-properties

c(a*b) = (c*b)a Is this commutative, associative, or both? It feels like it is commutative since numbers change their order. However, it feels like it is associative, because different numbers are grouped together in the parenthesis. Is it possible to show

137. ## Physics

This problem is about the work-energy theorem. What is the final speed of the particle? Express your answer in terms of K_f and M.

138. ## Chem 100

If the initial volume is 150mL and the final volume is 1L, what is the final pressure?

139. ## ENG 365 Issues in Literature

I have a summary paper to do that is suppose to be 8-10 pages. The problem that I am having is where to get started. This is what the teacher want us to do. Relate your life in work, social responsibility, and/or individual responsibility to a literary

140. ## math

Find the discriminant. Tell which conic section each graph will be. 4x^2 + 9y^2 +7x-2y-100=0 4x^2+14xy+7x-2y-100=0

141. ## Calculus. I need help!

i don't know which one is match. i tried those problem. i couldn't solve it Find y' by implicit differentiation. Match the expressions defining y implicitly with the letters labeling the expressions for y'. 1. 7xsiny+2cos2y=2cosy 2. 7xcosy+2sin2y=2siny a.

142. ## Chemistry-gases

Nitrogen dioxide reacts with water and oxygen in the atmosphere to produce acid rain. 4NO2(g) + 2H2O(g) + O2(g) = 4HNO3(g) Assuming that the temperature and the pressure remain constant, calculate the volume of air at 1 atm, 20 C, necessary to dilute the

143. ## math

Which is the 19th term in the sequence: an = -2(n - 3)?

144. ## Anthropology

In dancing with skeletons, in mali, who is usually blamed if a child is born with something the matter with it?

145. ## Chemistry-gases

Nitrogen dioxide reacts with water and oxygen in the atmosphere to produce acid rain. 4NO2(g) + 2H2O(g) + O2(g) = 4HNO3(g) Assuming that the temperature and the pressure remain constant, calculate the volume of air at 1 atm, 20 C, necessary to dilute the

146. ## biochemistry

explain the role of protein misfolding and aggregation in bovine spongeform encephalopathy

147. ## math

x^2+y^2=36 is a circle. How can you tell without actually plotting? Where is the center?

148. ## math

Which represent the first three terms of the sequence: a1 = 2 and an = 3(an - 1)^2?

149. ## Psychological Statistics

A researcher predicts that watching a film on institutionalization will change students’ attitudes about chronically mentally ill patients. The researcher randomly selects a class of 36 students, shows them the film, and gives them a questionnaire about

150. ## Probability and statistics

The probability that the life time of randomly chosen device is below average, average,above average are respectively 0.2,0.5,0.3. The probability that of the 3 randomly chosen devices lifetimes of 2 are above average and 1 below average equals

151. ## Probability and statistics

The probability that at most 3 tosses of a balanced dice are required to get a prime number on top is equal to a. 7/8, b.1/4, c. 1/2, d.3/4.

152. ## Algebra

If A=(x-y)-z and B=x-(y-z), then A-B= what?

Tell whether the graph opens upward or downward. Then find the axis of symmetry and vertex of the graph of the function. y=-1/4x^2-24

154. ## Calculus AP

implicit differentiation Find the slope of the tangent line to the curve xy^3 + 2y - 0.76 =0 at the point (-3, o.7) I'm lost. so 3xy^2 * y' + 2y = 0 right?

155. ## Physics

Pendulum A is 20 cm long and has a 5 g mass on it. Pendulum B is 30 cm long and has a 10 g mass on it. Which one has a faster period?

156. ## MATH

WHICH DESCRIBES THE NUMBER IN A DATA SET THAT OCCURS MOST OFTEN A.MEAN B.RANGE C.MODE OR D.MEDIAN

157. ## Chemistry

What will the molarity be if 12 drops of the blue dye solution is mixed with enough water to make one liter of solution (assume that 20 drops is equivalent to 1mL) Im not sure where to start?

158. ## Math

A continuously running washing machine receives jolts in a Poisson process at an average rate of 5 jolts per hour. The probability that it receives no jolts in given 20 minutes run e-5,e-5/3,e-100,e-100/3

159. ## Chem.

what is the volume of 4 moles of a gas if the pressure is 3.5 atm and the pressure is 25C

160. ## Col Physics

If a capacitor has opposite 5.3 micro-Coloumb charges on the plates, and an electric field of 2.3 kV/mm is desired between the plates, what must each plate's area be?

161. ## physics

Someone swints a 3.0 kg mass at the end of a 2.3 m string in a horizontal circle. If the string can withstand a tension of 80 N, at what speed can they swing the mass before they risk a lawsuit?

162. ## Science

If a man has a mass of 90 kg on earth, what is his mass on the moon?

163. ## physics

A car is rounding a curve with a radius of 12.0 m at 8.2 m/s when it hits a slippery patch. What is the minimum coefficient of static friction between the car and the slick patch of road that will allow the car to round the corner safely?

164. ## physics

Imagine a planet that orbited the sun at a distance three times that of Earth. What would the period of that planet be in Earth years?

165. ## Chemistry-Stoichiometry

A 1.146g mixture of the solid salts NaS)4 and PB(NO3)2 forms an aqueous solution with the precipitation of PbSO4. How would I write the molecular form of the equation for the reaction?

166. ## algebra 1b

5x-2y=4 x+2y=8

167. ## math

. Which is the next term in the number pattern: 77, 64, 53, 44, 37

168. ## art

Discuss how the Italo-Byzantine sense can be seen as an evident in Berlinghieri’s St. Francis Altarpiece. Provide at least two scholarly resources other than Gardner’s Art through the Ages in support of you position.

What is the value of the output for the function, g(c) = 19 - c2, if the input is 4?

170. ## Math

If Logx (1 / 8) = - 3 / 2, then x is equal to A. - 4 B. 4 C. 1 / 4 D. 10

171. ## math magic box

1-9 numbers are placed in a 3x3 box already the top right box is 1 and the bottom left croner is the number 6 figure what number is in the middle of all to make 18 in each row

172. ## stoichiometry

What mass of nitrogen monoxide can be made by the reaction of 8.00 g ammonia and 17.0 g oxygen? correct answer is 12.8 ± 0.1 (g) I keep getting 14.1 g and that the limiting reagent is NH3 What am I doing wrong?

173. ## math

A radio station has 170 tickets to a concert. They gave away 4 times as many tickets to listeners as to employees?

174. ## Science

Need 10 labels for the cell reproduction sytem

175. ## chemistry

If 2.0 mL of 0.80M copper (II) sulfate and 8.0 mL of water are mixed, what is the concentration of the resulting solution?

176. ## 4th grade challenging math questions

a pioneer family plans to build a barn.they will need 12 large support posts along each side wall and 8 posts along both the front and back walls.they can cut the two posts from each tree that they chop down.How many trees should they chop down?How did you

177. ## math

(4 − 2x)−2 x=-2 y=4 z=-3 how do you solve this? i have solved it and gotten 6 for my answer many times and it says it's wrong. other equations are (y − z)−3 and (x − 5y)0. i cant get them right

178. ## Science

What causes El Ninõ or La Niña to form?

179. ## Science

Is the following sentence true or false? A surface current warms or cools the air above it, influencing the climate of the land near the coast.

180. ## algebra

A cylindrical oil tank is 2/5 full. If 9 more liters are added, the tank will be 5/8 full. What is the capacity of the tank?

181. ## math

A radio station had 170 tickets to a concert. They gave away 4 times as many tickets to listeners as to employees. How many tickets did they give away to employees?

182. ## math

Given the formula A = ðr2, find the area (A), of a circle whose radius is 34,500,000,000 m. how do you solve?

183. ## Math

Find the POI (point of intersection) for the following set of lines: y=4x-1 and y=3x+4 I know how to plot them on a graph, and find out the POI that way, but how can I find the POI through an equation?

184. ## math

In a particular small town, the population in 1995 was 1200. Ever since then the population has grown by 4% every year. If conditions stay the same, what is the approximate expected population in the year 2000?

185. ## math

Isabel took 20 minutes to run around the track 6 times. John took 3 minutes to run around the track once. Which student was running faster?

186. ## English

Writeacher, I urgently need you to check these sentences. Thank you. I need you to check if the instructions are correct. 1. Complete the sentences with the correct form of the verb in brackets. 2. Turn the sentences into the passive. Mention the agent

187. ## math

how can you estimate heights and distances you can't easily measure with rulers or tape measures by using the following methods? a) shadows and similar triangles b) mirrors and similar triangles c) small triangles nested within larger triangles. (it's not

188. ## math

Write an expression for the volume of a rectangular prism if the length is 5 feet shorter than some x amount, the width is 3 feet longer than x, and the height is x feet.

189. ## math

Rewrite using only positive exponents: x−5y3. ??

190. ## Greenspun middle school

you have 4 pennies, 2 nickels and 3 dimes in your pocket, if you radmonly choose 2 coins, what is the probabioity that both are dimes?

191. ## college math

finding the square x^2+16x=0

192. ## math

jody earned \$10 by running errands and spent 1/4 of the money to find what she spent you could multiply \$10 by

193. ## math

In a large city league, the boys' baseball teams hold a tournament. If there are 40 teams in the league and half of the teams are eliminated in each round of games, how many teams are left after 3 rounds?

194. ## math

how can you estimate heights and distances you can't easily measure with rulers or tape measures by using the following methods? a) shadows and similar triangles b) mirrors and similar triangles c) small triangles nested within larger triangles. (it's not

195. ## Science

What are deep currents and how do they form?

196. ## 11English

this is about the book "Oedipus the King". how can i make two questions about Oedipus from this definition of anger? "The man who is slighted by those who thinks ought to respect him and feel grateful toward him is the more easily offended."

197. ## Ethics Applied

I have to watch a movie of my choice and then write a paper consisting of 4-5 paragraphs about 2 characters and a major moral issue they each face and then identify the moral approach (egoism, religious ethics, and contractarianism) each uses to resolve

198. ## Psycology

What does Framing means?

199. ## physics

A block of mass m = 5.4 kg is pulled up a = 23 incline as in the figure with a force of magnitude F = 35 N. Find the acceleration of the block if the incline is frictionless.

200. ## calculus

a box with mass 34.1 is held stationary on a rmap inclined at an angle of x degree by a force of 100 N at an angle of 30 degree to the plane. Find x.

201. ## chemistry

Indicate the number of covalent bonds that each nonmetal atom is expected to form. a. Se is expected to form 2 covalent bonds. b. H is expected to form 1 covalent bonds. c. Br is expected to form 1 covalent bonds. d. N is expected to form 3 covalent bonds.

202. ## ENglish

why does it make sense for us to form a parody of Romeo and Juliet?

203. ## Algebra

How do I calculate 4^n=1/(2(n-n^2))? Thanks.

204. ## English

Writeacher, could you please check these sentences? Thank you. 1) Picture 1 shows some teenagers leaning on a barrier (bar?), whereas two are standing near them. They are all wearing casual clothes: short-sleeved T-shirts or shirts over ripped jeans. 2)

205. ## math

water flows out through a circular pipe whose internal diameter is 2 cm at the rate of 6 metres per second into a cylindrical tank. the radius of whose base is 60 cm. find the rise in the level of water in 30 minutes

206. ## ALG@ NEED HELP PLEASE

Explain how to factor the following trinomials forms: x2 + bx + c and ax2 + bx + c. I am totally lost still I read and read and the concept is lost in my head. Can someone please help me? I know there is more than one way to Factor this.

207. ## writing

composition on plan for summer holiday

208. ## Chemistry

What acid or base will you expect to find as a constituent of a) baking soda b) vinegar c) gastric juice d) soda ash e) lye

209. ## trig

bernhardt and julia are observing an eagles nest in a tree. Julia is 75m from the tree, and sees it at an angle of elevation of 42 degrees A)How high up the tree is the nest B)Bernhardt is standing 30m behind julia. At what angle of elevation does he see

210. ## physics

The density of helium is 0.179kgm3.A Baloon hs a capacity of 27m3 and a mas of 12.5kg whn empty.a)fnd the total mas of baloon n gas.b)if dnsity of air is 1.29 kgm3 wht mas of air is displacd by the baloon

211. ## English

I am having a hard time understanding passive voice? Could someone please help? Which sentence below is passive voice? 1. She served the customer the food. 2. The food was served to the customer. 3. The customer asked to change the order. 4. The server too

212. ## Math

Expand using logarithm properties: log6 x(x+5)/x^6 I am so confused about this problem. Could anyone explain this to me?

213. ## Physics

A block rests on a horizontal, frictionless surface. A string is attached to the block, and is pulled with a force of 45.0 N at an angle è above the horizontal, as shown in Figure 7-23. After the block is pulled through a distance of 1.50 m its speed is v

214. ## english

I am having a hard time understanding active voice. Can anyone please assist? which following sentence is active voice? 1. The new product line was developed by the Research and Development department? 2. The secretary was promoted by her supervisor to an

215. ## crucible

account foe bettys condition in act one pleeez

216. ## math

william wants to known how many kilograms a 1000 gram cantaloupe weighs he converts the measurement and says the melon 1,000,000 kilograms what did he do wrong

217. ## English

Writeacher, could you please check these sentences I wrote about a listening a need to prepare for tomorrow. 1) An elderly man remembers the regional tradition on New Year’s Eve when he was a child . In particular, what made New Year’s Eve special (for

218. ## PHYSÝCS I

A monkey is sitting on a wood plate attached to a rope whose other end is passed over a tree branch, as shown in the figure. The monkey holds the rope and tries to pull it down. The combined mass of the monkey and the wood plate is 117 kg. a) What is the

219. ## math

Mr Lopez is putting a fence around his vegetable garden. The garden is shaped liked a rectangle. The longer sides arre 14 feet long, and the shorte sides are 9 1/2 feet long. How much fencing should Mr. Lopez buy?

220. ## PHYSÝCS I

A crate of oranges slides down an inclined plane without friction. If it is released from rest and reaches a speed of 4.883 m/s after sliding a distance of 2.01 m, what is the angle of inclination of the plane with respect to the horizontal? Please note:

221. ## PHYSÝCS I

A mass m1 = 18.7 kg on a frictionless ramp is attached to a light string. The string passes over a frictionless pulley and is attached to a hanging mass m2. The ramp is at an angle of θ = 23.7° above the horizontal. m1 moves up the ramp uniformly (at

222. ## 11Biology

What are the gametes formed by the following squash plants, the genotypes of which for fruit colour and shape given; and what will be the appearance of the offspring from each cross? WWdd x wwDD WwDD x wwdd WwDd x WwDD WwDd x Wwdd WwDd x wwdd WwDd x WwDd

223. ## PHYSÝCS I

A sky diver of mass 80.9 kg (including outfit and equipment) floats down suspended from her parachute, having reached terminal speed. The drag coefficient is 0.575, and the area of her parachute is 20.27 m2. The density of air is 1.14 kg/m3. What is the

224. ## PHYSÝCS I

A block of mass m1 = 21.3 kg is at rest on a plane inclined by θ = 30.00 degrees. It is connected via a rope and pulley system to another mass m2 = 24.5 kg, as shown. The coefficients of static and kinetic friction between block 1 and the inclined plane

225. ## CHEMISTRY!!!=0

Determine the pH of each solution: (a) 0.10 M NH4Cl can someone show me how to do this one so i have the idea of how to do the rest. thanks!

226. ## history

could you please give me any information about houses in hot dry countries

227. ## physics

Two forces are applied to a car in an effort to move it, as shown in the following figure, where F1 = 428 N and F2 = 358 N. (Assume up and to the right as positive directions.) a) What is the resultant of these two forces? magnitude and direction b) If the

228. ## chemistry

Which has the higher boiling point? (a) CH3CH2CH2CH2CH3 or (b) CH3CH2CH2CH2CH2CH2CH2CH3

229. ## chemistry

At standard pressure, ammonia melts at 195 K and boils at 240 K. If a sample of ammonia at standard pressure is cooled from 200 K down to absolute zero, what physical constants are needed to calculate the change in enhtalpy? I) the heat capacity of

230. ## algebra

you are planning a cookout. you figure that you will need at least 5 packages of hot dogs and hamburgers in total. a package of hot hods costs \$1.90 and a package of hamburgers costs \$5.20. you can spend a maximum of \$20 in total on the hot dogs and

231. ## chemistry

How much heat is required to heat 0.1 g of ice at −30 C to steam at 100 C? Use the approximate values below for your calculation. cice = 2 J/g · C csteam = 2 J/g · C cwater = 4 J/g · C Hvap = 2, 260 J/g Hfus = 340 J/g

232. ## math

For the next three problems, evaluate each expression if x = −2, y = 4, and z = −3. (4 − 2x)−2 (y − z)−3 (x − 5y)0

233. ## math

how can you estimate heights and distances with mirrors and similar triangles?

234. ## AP CHEMISTRY

Calculate the pH at the equivalence point in titrating 0.100 M solutions of each of the following with 0.080 M NaOH. A) benzoic acid (C6H5COOH) Ka= 6.3*10^-5 for it

235. ## science

Circle the letter of each sentencethat is true about deep currents. a. they can be thought of as a global conveyer belt. b.it takes them about ten years to flow from the pole to the equator and back. c. they transfer heat through the ocean d. they bring

236. ## physics

Two electrostatic point charges of 83 µC and 50 µC exert a repulsive force on each other of 175 N. What is the distance between the two charges?

237. ## algebra

a bag contains only nickels and dimes. there are exactly 18 coins in the bag. the amount of money in the bag is \$1.25. let x represent the number of nickels in the bag. let y represent the number of dimes in the bag. 1. write a system of equations that

238. ## math

A) 2 5/8 x 3/14 i got 1 31/32 B) 2 1/10 x 3 4/7 i got 8 1/2 are these correct?

239. ## communication

I need to complete an outline and thesis statement on "Two female Chihuahuas living in the same household.I don't understand how and what information to write.

240. ## physics

Why is Tangential acceleration equal to alpha*Radius?

241. ## math

How do I find the area of a cylinder if the quiestion says the base has a radiuse of 5 feet using pie 3.14 and the length is 12?

242. ## Physics

An electron moves with speed 2.46 x 105 m/s in a 1.39-T uniform magnetic field. At one instant, the electron is moving due west and experiences an upward magnetic force of 2.81 x 10−14 N. Caculate the magnetic field (angle). What is the direction of the

243. ## Math

Delia works from 8:00 a.m. to 4:30 p.m. and has one hour each day for lunch. How much does she earn for a five-day workweek at \$4.80 per hour?

244. ## English

Thank you very much, Writeacher. Could you please check these sentences I need to include in an email? Thank you. 1) I got the email address of your school on the the E-Twinning platform. I really hope your school is still interested in a school exchange

245. ## math

mr lopez is putting a fence around his vegetable garden the garden is shaped like a rectangle. The longer sides are 14 feet long, and the shorter are 9 1/2 feet long. how much fencing should he buy?

246. ## chemistry

if excess NH3 is reacted with 0.438 mol of O2, how many moles of H2O will be produced? 4NH3+7O2-->4NO2+6H2O

247. ## English - ms. sue

ms. sue sorry yesterday i ask question that not make sense but i be talking about the occasion question where rock say the bith word for second time it ask when be this second occasion? first occasion be daytime and second occasion be night time? also i

248. ## math

Solve the system x^2+y^2-4x+2y=20 4x +3y =5

249. ## AP CHEMISTRY

how did u get .0444 in the question i just asked

asked by 2 DrBob222 from DAN
250. ## help help helppppp pleasee

ý posted some question of physics... please any one answer me.... qyestions are bellow ý posted before 3 hours...

251. ## math

how can you estimate heights and distances you can't easily measure with rulers or tape measures by using the following method? small triangles nested within larger triangles.

252. ## English

Writeacher, we left out a few sentences yesterday. I wonder if you could have a look at them today. Thank you. 1) I couldn’t get off last night. It must have been the coffee. His lawyer managed to get him off. He got off/away with a fine. 2) On Friday

253. ## grammar

If I put a sentence here listing the dependent and independent clauses within the sentence can you tell me if I am correct. Here is the sentence. I have read several fairy tale collectionthat include th Cinderella story, but my favorite is a book that

254. ## math

A rocket shoots straight up from the launch pad.Five seconds after lift off, an observer 2 miles away notes that the rocket's angle of elevation is 41 degrees.How far did the rocket rise during those 4 seconds?

255. ## chemistry

objective and conclusion for experimenting a baking sosa - sand mixture for a mole-grams and molecules

256. ## chemistry

if the average salinity is 35 parts per thousand how many grams of dissolved salts will 500g of seawater contain

257. ## Chemistry

A block of copper at 100 degrees Celsius comes in contact with a block of aluminum at 20 degrees Celsius. The final temp of the blocks is 60 degrees Celsius. What are the relative masses of the blocks?

258. ## social studies

1. About how many years was it between the arrivals of the 2 groups of colonists on Roanoke Island? 2. Why was John White's return to Roanoke Island delayed? About how many years was it delayed? 3. What do you think might have happened to the " lost

259. ## Chemistry

I was wondering if anyone could describe a general Friedel-Crafts alkylation to me. I understand that it involves the substitution of an aromatic ring with an alkyl group using a strong Lewis acid catalyst. But, what types of activating groups are present

260. ## Maths

The first term of an arithmetic sequence is 2. The first, third and eleventh terms are the first three terms of a geometric sequence. Determine the seventh term of the geometric sequence

261. ## math

How can you decide whether a photo or drawing can be enlarged or reduced to fit a space without distorting the shape?

262. ## Physics

A 200 kg wooden crate is dragged at a constant speed by a rope through a distance of 4 m along a wooden floor . The coefficient of sliding friction is .2 . If the work done is 1568 j , and the rope is horizontal, calculate the tension in the rope

263. ## English

Sorry, Writeacher. I mixed two senteces without realizing it. 1) James prefers to define “youth” as the age in which people are not children any more and not yet adults. 2) James believes that youth culture is always changing since young people are

264. ## Physics

A 200 kg wooden crate is dragged at a constant speed by a rope through a distance of 4 m along a wooden floor . The coefficient of sliding friction is .2 . If the work done is 1568 j , and the rope is horizontal, calculate the tension in the rope

265. ## Math

If you start with a number, subtract 14, then divide by 12, the result is 248. What was the original number?

266. ## Geography

How are Rift Valleys formed and which two plates formed the Thingvelir Rift Valley in Iceland? Please help!

267. ## Physics

A 200 kg wooden crate is dragged at a constant speed by a rope through a distance of 4 m along a wooden floor . The coefficient of sliding friction is .2 . If the work done is 1568 j , and the rope is horizontal, calculate the tension in the rope

268. ## English

Incorrect sentence: The report considers important factors in choosing a medical facility, ratings of services at the urgent care center, reasons why HMO members do not use the center, and offers suggestions for increase in member usage. I know this has

269. ## home economics

uses of a sleeve

270. ## chemistry

Calculate the standard reduction potential for the reaction of Cu(III) to Cu(II) Use the following data: 1) Cu^+3 + 2e^- -> Cu^+, E°1 = 1.28 V 2) Cu^+2 + e^- -> Cu^+, E°2 = 0.15 V 3) Cu^+2 + 2e^- -> Cu(s), E°3 = 0.34 V 4) Cu^+ + e^- -> Cu(s), E°4 =

271. ## Geometry

name the integer values of x that form a triangle with 12-x, 12, 12+x

A 0.50-kg block, starting at rest, slides down a 30.0° incline with kinetic friction coefficient 0.30 (the figure below). After sliding 84 cm down the incline, it slides across a frictionless horizontal surface and encounters a spring (k = 33 N/m). (a)

273. ## Can' t Figure Out: Math

The art department had a party at the teacher's house. There are 50 brownies and 40 celery sticks served as refreshments. Each art student had the same number of brownies and the same number of whole celery sticks, & nothing was left over. The art teacher

274. ## Chemistry

How do you find the partial pressure?

275. ## math

To get 8, what operations (+ - x / sqrt) do I use between a series of four 3s (3_3_3_3=8)?

276. ## algebra

Can someon please explain why the point-slope formula cannot be used to find the equation of a line that is parallel to the y-axis. Thanks

277. ## Science

1. Which of the following is an example of energy transfer from the sun to a producer and then to a consumer? a. sun warms rocks; squirrels climb over rocks; squirrels are eaten by other animals b. sunlight helps plants to grow and deer eat plants c. sun

278. ## ict

what type of output does the printer produce

279. ## algebra

Can someone please help. Explain how you can determine from the graph of a system of two linear equations in two variables whether it is an inconsistent system of equations. Thanks

280. ## algebra

Can someone please help. When you solve a system of equations by the substitution method, how do you determine whether the system of equations is inconsistent? Thanks

281. ## 6th Math

Don decided to do some landscaping in his backyard. He began by watering the lawn. The rotating sprinkler that he installed can spray an area with a radius of 7 feet. What is the maximum area the sprinkler can cover? a. 21.98 ft(2) b. 28.26 ft(2) c. 43.96

282. ## Math

I am not sure how to convert my Cartesian xyz-coordinates into meters. x = 0.666 y = 0.666 z = 0.327 a = 6,377,563.396 meters b = 6,356,256.910 meters

283. ## social studies

I am writing a report on James Madison. In the report, I must have a paragraph talking about the Peaceful Transition to Power (in the election of 1808) and also about the Foreign Policy (waging the war of 1812). I'm struggling to find information about

284. ## Clac- math

a 20 foot ladder leaning up against a vertical wall begins to slip. the base of the ladder makes an acute angle with the floor. when the angle equals 60 degrees the angle is decreasing at 0.1 radians/second. find the rate at which the height of th upper

285. ## Geometry

In triangleRST, mangR = (2x + 10)­­°, mangS = (2x + 25)°, and mangT = (x – 5)°. Find the value of x.

286. ## physics

What is the acceleration (in meters/second^2) of a freely falling 73.0 kg sky-diver, if air resistance exerts a force of 273 N?

287. ## geometry

acute h has a measure of 50 degrees what is the measure of acute i explain answer

288. ## statistics

. An automobile is selling a new model car with an advertised in‐city mileage of 27 MPG. As with most car models, there is no associated measure of variability (variance, SD, etc.) included with the advertised MPG. You write the manufacturer and request

289. ## math

when ordering supplies , mr.williams accidentally ordered 12 more than twice his usual number of pencils.when the order arrived , he received 60 pencils. how many pencils does mr.williams usually order?

290. ## English

I left out a sentence,writeacher. Thank you. He is holding a pen on/over his right ear. A pen is sticking on his ear.

291. ## math

the probability that an imdividual is left-handed is 0.30 in a class of 25 students, what is the the mean and standard deviation of the number of left-handers in the class

292. ## math

A rectangular prism has a volume of 4x(cubed) + 30 x(squared) +36x. What linear expressions can represent possible dimensions of the prism? Please explain.

293. ## Physics

Block M (mass of 15.65 kg) is initially moving to the left with a speed of 3.77 m/s. The mass of m is 8.26 kg and the coefficients of friction are Us = 0.411 and Uk = 0.304. The string is massless and the pulley is massless and frictionless. How fast will

294. ## History-The Early Greeks

Why did the use of money help trade grow?

295. ## math

In ax(squared) + bx +c, if ac is negative and b is positive, what do you know about the factors of ac?

296. ## Chemistry

The following reaction exhibits the rate law: Rate = k[NO2]^2[Cl2]. 2NO(g)+Cl2(g)---->2NOCl (g) (a) Explain why the following mechanism is not plausible for this reaction. Fast: NO + Cl2NOCl + Cl Slow: NO + Cl---->NOCl (b) Propose a two-step mechanism

297. ## math

Describe how to find linear expressions for the possible dimensions of a rectangular prism with a volume of 8k(cubed) + 26K(squared) +6K.

298. ## chemistry

Find the molar heat of vaporization for a substance, if 3.28mol of the substance absorbs 24.8 kJ of energy when it changes from a liquid to a gas. Answer in units of kJ/mol

299. ## physics

A man with a mass of 62 kg skis down a frictionless hill that is h = 3.3 m high. At the bottom of the hill the terrain levels out. As the man reaches the horizontal section, he grabs a 20-kg backpack and skis off a 2.0-m-high ledge. At what horizontal

300. ## chem

The standard molar heat of vaporiza- tion for water is 40.79 kJ/mol. How much energy would be required to vaporize 2.54 ×1010 molecules of water? Answer in units of kJ

301. ## physics

1. Which will roll faster down an inclined plane, a can of water or a can of ice? A) A can of water. B) Both the same. C) A can of ice.

302. ## algebra

0.7x*4=0.8x-7

303. ## calculus

FInd the area of the region bounded by the graphs of y= 3x^2+1 , y=0, x=-2.7, x=2.5

304. ## physics

A man with a mass of 62 kg skis down a frictionless hill that is h = 3.3 m high. At the bottom of the hill the terrain levels out. As the man reaches the horizontal section, he grabs a 20-kg backpack and skis off a 2.0-m-high ledge. At what horizontal

305. ## science

if an object's density is _ than fluid density, the object will _ .

306. ## History-The Early Greeks

Name three rights granted to Greek citizens that American citizens have today.

307. ## Math

Point B is 10 KM north of Point A and Point C is 10 Km from B on a bearing of 060 from b. Find the bearing and distance of C from A

308. ## physics

Toss a baseball bat through the air and it wobbles about its ____________________. A) light end. B) center of mass. C) heavy end.

309. ## History-The Early Greeks

Why did the use of money help trade to grow?

310. ## Math

If the input number is 100qhat is the output?

311. ## math

pete colored 1/2 of a poster. rebecca colored 1/3 of the poster. what fraction still needs to be colored?

312. ## marketing2

Identify your preferred pricing strategy (penetration, skimming, prestige, odd-even, or other pricing strategies listed in Chapter 12). Describe your decision for choosing this particular pricing strategy

y= u+3/u-1 u=x^1/3 find dy/dx at x=8

314. ## math

The length of a rectangle is 3 inches more than its width. Write an equation for the area of the rectangle in terms of width, w.

315. ## math

Use the following situation to answer the next four questions. The formula for these questions came from the police department. They use this formula to determine the speed at which the car was going when the driver applied the brakes, by measuring the

316. ## math

the height, h, of a ball t seconds after it is released for a jump shot in a basketball game can be modeled with the equation h = −16t2 + 12t + 8. The rim of the basket is 10 feet high. Which of the following is the correct way to set up the problem to

317. ## teen alcohol abuse

I am doing a research outline for it and I have all my notes and everything but I do not know where I should put my infor mation on my paper even though I have a guide line. (English is my worst subject) Here it is this is all I have help please ....

318. ## math

The length of a rectangle is 3 inches more than its width. If the area of the rectangle is 180 square inches, write an equation for the above situation

319. ## physics

if a race car's velocity increases from 4 m/s to 36 m/s over a 4 s time interval, its average acceleration would be 10 m/s 2 ? IS THIS TRUE ?

320. ## math

If i sell 50 to 65 sandwhiches in one day what inequality equals the total number of sandwhiches in 5 days?

321. ## Career

What are the best ways to market a insurance and risk management company? business sells paper and promises, I can't give discounts and I don't have control of the cost of the insurance or how claims are handled.

322. ## math

x over 5,2x over 15,3x over 45,12 over 135 Find the value of x in the above sequence

323. ## algebra

simplify (2x + 3)(x - 4) =

324. ## physics

A condition for mechanical equilibrium is that the sum of the forces acting equal zero. Another condition is that the sum of the _____A) centrifugal forces also equal zero B) centers of gravity balance.C) torques equal zero.D) rotational inertias equal

325. ## math

Jason is trying to make picnic lunches.He has 12 sandwiches, 18 apples and 30 pieces of candy.How many lunches can he mmake if he wants each lunch to have the same number of each kind of food and use all of the food?

326. ## Math

Rex wanted to build fence around a rectangular lot. The lot measures 75 meters by 50 meters. How much fencing materials does he need?

327. ## English

Thank you very much, Writeacher. Can you check these descriptions of pictures I need to prepare for tomorrow, too. 1) Some workers are at a self-service restaurant (I think it is a sort of canteen in their own firm) and they are choosing their meals from a

328. ## English

Thank you very much, Writeacher. I still have to describe a few pictures. 1) Picture 1 shows some teenagers leaning on a bar, whereas two are standing near them. They are all wearing casual clothes: short-sleeved T-shirts or shirts over a pair or ripped

329. ## English

I left out the following sentences. Thank you very much. 1) The man in the middle is wearing his pink hair in cornrows and has a ring earring in his right earlobe. He’s looking down and has a black, studded, leather jacket on. 2) Next to him I can see

330. ## chemistry-gases-ppm

Nitrogen dioxide reacts with water and oxygen in the atmosphere to produce acid rain. 4NO2(g) + 2H2O(g) + O2(g) = 4HNO3(g) Assuming that the temperature and the pressure remain constant, calculate the volume of air at 1 atm, 20 C, necessary to dilute the

331. ## english

Can you read this for grammar errors By taking a Modern World Literature class, one should expect to read novels about cultures throughout the world, and I think Snow Flower and the Secret Fan did a wonderful job in portraying the customs and traditions of

332. ## geometry

a school playground is in the shape of a rectangle 500 feet long and a 100 feet wide if fencing cost 15 dollars per yard what will the cost be to place fencing around the playground ?

333. ## chemistry

3 ag (s) + 4 HNO?(aq) -> 3 AgNO?(aq) = 2 H?O(i) + NO (g)

334. ## Chemistry--Plz HELP!

How would i go about balancing the following equation? My teacher said something about the charges: Silver Nitrate + Sodium Phosphate = Silver Phosphate + Sodium Nitrate

335. ## Math

4 loaves of bread cit into 10 slices. 18 people eat 2 slices. What is the fraction that shows how much bread was eaten

336. ## stats

The vice-president of a business firm has reviewed the records of the finn's personnel and found that 70% of the employees read The Wall Street Journal. If the vice-president was to choose 12 employees at random,what is the probability that the number of

337. ## Math

There are 24 students in Mrs.Smith's 1st block class. 1/4 of the class passed the math test with an A. 12 students in the class passed the math test with a B. What percent of the students in the class passed the test? ****** This is how I slove the

338. ## Math

Three students will represent your school at a conference at the state capitol. A drawing will be held to select the three representatives from a group of five finalists. If you and you friend are both finalists, what are the chances that both of your

339. ## math

You have 25-1.5foot fence pieces and 1--1.5foot gate. If you place the fenced zone against a barn of infinite size, what is the maximum possible (rectangular) area in the fenced zone, and how long are the sides?

340. ## Chem Question (thermo)

Calculate ΔG at 25 ºC for a reaction in which Ca2+(aq) combines with CO32–(aq) to form a precipitate of CaCO3(s) if the concentrations of Ca2+(aq) and CO32–(aq) are 0.023 M and 0.13 M, respectively. (ΔGº = –47.94 kJ) A. –62.3 kJ/mol B. –33.5

341. ## math

Use your graphing calculator to find how many seconds before the projectile hits the ground. Let y1 = −16t2 + 800t, or factor and solve for t algebraically

342. ## physics

The main reason railroad trains remain on their tracks has to do with the ____________________. A) None of these.B) beveled shape of the wheel circumference.C) independence of opposite wheel motions.D) All of these. E) flange on their wheels.

343. ## Language

What is the longer form for this clipped word" caf "?Thank u

344. ## Language

The book says:" Add as many prefixes as u can to the word "form". Try to make at least 5 words.

345. ## English

I left out the following descriptions. Can you please have a look at them, too? Thank you. 1) Picture 4 shows a vending machine in the left corner, a white table with five coloured chairs around it in the middle and a noticeboard hanging on a wall in the

346. ## math

how many yards are in 144 inches?

347. ## math

how to graph this y=6x+20 Graph the y-intercept. Show the lines that indicate the use of slope to graph two more points Draw the line representing the graph of the equation

348. ## Algebra 2

find all the zeros of the polynomial function F(x)= x^4+4x^3-6x^2-36x-27

349. ## chemistry

how many moles of NaCl are contained in 1.9L of a 1.7M NaCl solution

350. ## Chemistry

Each of the following processes is spontaneous as described. Which one will have ∆H approximately equal to zero? 1. precipitating 1 mol of AgBr(s) from a solution of Ag+(aq) and Br−(aq) 2. 1 L He(1 atm, 298 K) + 1 L Ar(1 atm, 298 K) → 2 L He/Ar

351. ## Calculus-concave up and down

Can someone explain this question to me? What intervals should I use to test whether or not the graph is concave up or down. Here is the URL for the graph. imgur dotcom/FdQCV

352. ## Thinashaka

Write 0,25% as a fraction

353. ## math

how many yards and inches are in 45 inches?

354. ## professional communication

Analyse the following argument: Desert animals are strong. A camel is a desert animal. Therefore a camel is a strong animal.

355. ## chemistry

A certain substance has a molar heat of vaporization of 54.2 kJ/mol. How much of the substance is in a sample that requires 80.0 kJ to vaporize? Answer in units of mol

356. ## physics

When we studied the concept of work, we learned that work = force x distance. Now we learn that torque = force x distance. What's different about these two definitions?A) For work, distance and force are in the same direction; for torque they are

357. ## math

5x-(2a^6•16b)= -3b(6a^2 -(5bx))

Some cicadas called 13 year locusts come above ground every 13 years, while others called 17 year locusts come out every 17 years. Mark's grandmother told him about a terrible year when then cicadas were so numerous that they ate all the crops on her farm.

359. ## math

Describe how to find linear expressions for the possible dimensions of a rectangular prism with a volume of 8k(cubed) + 26K(squared) +6K.

360. ## geometry

The diagram below represents the graph of f(x)=a over x-p +q.T(5;3) determine the values of a,p, and q

361. ## math

In ax(squared) + bx +c, if ac is negative and b is positive, what do you know about the factors of ac?

362. ## Liinear equations

Write the equation for this situation the value,V in hundreds of dollars of Bob's stamp collection is 12 dollars more than 1/3 of the age, t(in years)

when you read you can somethimes make a general statement, or generalization,about inividual ideas in the text. a generalization tells how ideas are mostly alike or all alike. directions read the following passage. people of all ages can play basketball