# Questions Asked onSeptember 13, 2010

1. ## PHY

Two snowcats tow a housing unit to a new location at McMurdo Base, Antarctica, as shown in Figure 4-46. The sum of the forces A and B exerted on the unit by the horizontal cables is parallel to the line L, and FA = 4300 N. Determine FB and the magnitude of

2. ## physics

If a car rolls gently(vo=0) off a vertical cliff, how long does it take to reach 85km/h?

3. ## chemistry

the mole fraction of urea (molar mass = 60g/mole) in a solution prepared by dissolving 16g of urea in 39g of h2o

4. ## physics 1

In coming to a stop a car leaves skid marks 92m long on the highway. Assuming a decceleration of 7.00m/s^2, estimate the speed of the car just before braking.

5. ## math

how do you convert .83 to a fraction

6. ## chemistry

Write formulas for the compounds that form from {\rm Rb} and each of the following polyatomic ion: {\rm NO}_{3}^{-}, {\rm SO}_{4}^{2-}, {\rm PO}_{4}^{3-}.

7. ## chemistry - vapor pressure

the vapor pressure of pure water at 25C is 23.8 torr. determine the vapor pressure (torr) of water at 25 C above a solution prepared by dissolving 35g of urea (a nonvolatile, non-electrolyte, MW = 60.0G/MOL) IN 76G of water. answer:21 i just want to know

8. ## Physics Flux

The electric flux through the surface shown in Figure Ex27.10 is 15.0 Nm2/C, and the electric field makes an angle á = 70° with the surface. What is the electric field strength? The surface is a 10cm by 10cm square.

42. ## Physics

Annie is walking to school leisurely at a speed of 1.0 m/s for the first half of her trip. She then remembers that her physics teacher told her that she must average 2.5 m/s to make it to school on time. Realizing she might be late, she starts running.

43. ## Physics

A car slams on its brakes, coming to a complete stop in 4 sec. The car was traveling north at 60 mph. Calculate the acceleration

44. ## Science-Chemistry

I did a lab on Elements and Compounds and I would be grateful if u could provide and tell me some information on my work. Lab --Investigation--Elements and compounds. Can an element be separated from a compound? Can an element form a compound? In this

45. ## analogy

large is to small, feast is to

46. ## Physics

Kyle is flying a helicopter and it is rising at 6.0 m/s when he releases a bag. After 2.0 s (a) what is the bag's velocity? -13.6 m/s (b) how far has the bag fallen? (c) how far below the helicopter is the bag?

47. ## statistics

Find the p-value for each test statistic. a. Right-tailed test, z=+1.34 b. Left-tailed test, z=−2.07 c. Two-tailed test, z=−1.69

48. ## Chemistry

Oxygen reacts 1:2 with sodium and is a colourless gas; chlorine reacts 1:1 with sodium and is a yellow gas; neon does not reacts with sodium and is a colourless gas. Suppose that a new element , pretendium, has been dicovered, and it is noted that this

49. ## More Math

I do not understand this: Evaluate and simplify f(x+h)-f(x)/h if f(x)=x^2-2x

50. ## English

1. The woman working in the farm is a foreigner. 2. The woman working on the farm is a foreigner. (Which preposition do we have to us before 'the farm'? Are both OK?)

51. ## physics

A thin nonconducting rod is bent to form a semi-circle of radius R. A charge Q is uniformly distributed along the upper half and a charge -Q is uniformly distributed along the lower half, as shown int he sketch at the right.find E vector at P, the center

52. ## Physics

A football kicker can give the ball an initial speed of 31 m/s. What are the (a) least and (b) greatest elevation angles at which he can kick the ball to score a field goal from a point 49 m in front of goalposts whose horizontal bar is 3.44 m above the

53. ## Physics

a baseball is hit at a height h = 1.10 m and then caught at the same height. It travels alongside a wall, moving up past the top of the wall 1.2 s after it is hit and then down past the top of the wall 3.2 s later, at distance D = 53 m farther along the

54. ## Physics

a ball is thrown up onto a roof, landing 4.70 s later at height h = 24.0 m above the release level. The ball's path just before landing is angled at  = 62.0° with the roof. (a) Find the horizontal distance d it travels. (Hint: One way is to reverse the

55. ## Physics

A particle leaves the origin with an initial velocity = (6.91 ) m/s and a constant acceleration = ( - 2.38 - 2.79 ) m/s2. When the particle reaches its maximum x coordinate, what are (a) its velocity, (b) its position vector?

56. ## MATH

Given the GCF or LCM, what else do you know about each pair of numbers? a) Two numbers have GCF of 2. b) Two numbers have an LCM of 2. Please and thankyou!

57. ## Chemistry

Alicia's cheapskate boyfriend gave her a ring he claims is 24 carat gold. Alicia is skeptical. After chem class the next day she measures the mass of the ring, finds the volume of the ring by water displacement, and then calculates the density of the ring.

What is the unscrambled fruit or vegetable with the letters bekrechuryl?

59. ## chem

How much water would be needed to completely dissolve 1.64 L of the gas at a pressure of 750 torr and a temperature of 21 C? Henrys law constant is .145 M/atm.

60. ## chemistry

A solution of sodium nitrate, NaNO3, in 200 g of water is saturated at 50°C. If the solution is cooled to 20°C, how many grams of sodium nitrate will precipitate from the solution?

61. ## Science (Nutrition)

Which hormone signals the pancreas to secrete bicarbonate into the small intestine? Which hormone tells the pancreas to secrete pancreatic lipases, proteases, and amylases into the small intestine?

62. ## chem

What mass of sucrose should be combined with 524 g of water to make a solution with an osmotic pressure of 8.50 atm at 270 K? I keep working this and end up with 68.81g but it is not right, any help?

63. ## Physics

The electric flux through the surface shown in Figure Ex27.10 is 15.0 Nm2/C, and the electric field makes an angle α = 70° with the surface. What is the electric field strength? The surface is a 10cm by 10cm square.

64. ## statistics

Solve the problem. The lifetime of a new brand of light bulb can be described by a Normal model with a mean of 2000 hours and a standard deviation of 250 hours. Find the percentage of light bulbs that will last more than 2600 hours. A.) 100% B.) 5% C.)

65. ## Math - asymptotes

Identify all asymptotes. 1. y= 1 / 2-√x^2 - 3x the asymptotes I got were: vertical: 1 & 4 horizontal: 0 Is this it or are there more? 2. y= x^3-2x / x^2 + 1 I believe there are no asymptotes? Is this correct?

66. ## line segments,lines and rays

how you draw a label line segment

67. ## Child Psychology

By the age of ___,a child's perceptual map for phonetic discrimination is A. one month B. six months C. one year D. five years

68. ## Chemistry

5.00 g is equal to how many pounds?

69. ## math

forgot my math book at school, i need the questions saxon math grage 6 lesson 14

70. ## European History

What is the relationship between the study of geography and the study of history?

71. ## math

two students are playing with a six-sided number cube. the probabilty of tossing a number greater than 13 and less than 24 is 6/6 or 1. what are the possible numbers on the cube?

72. ## European History

Explain the impact of Europe’s geography on European History.

73. ## drama

how do you write the crtique of a movie

74. ## physics

An object with constant acceleration has velocity v = 12 m/s when it is at x = 6 m and v = 17 m/s when it is at x = 10 m. What is its acceleration?

75. ## science

When a parent radioactive nucleus splits by ejecting an alpha particles (two protons and two netutrons), the remaining nucleus has ____ the original nucleus. a) two protons and two neutrons more than b) two protons more and two neutrons less than c) two

76. ## Physics

A car is driven east for a distance of 46 km, then north for 27 km, and then in a direction 35° east of north for 24 km. Determine the angle (from east) of the car's total displacement measured from its starting direction.

77. ## physics

A man is pulling on a rope with a force of 65 N directed at an angle of 26◦ to the horizontal. What is the x-component of this force? Answer in units of N.

78. ## physics

A helicopter is rising at 5.1 m/s when a bag of its cargo is dropped. (Assume that the positive direction is upward.) (a) After 2.0 s, what is the bag's velocity? (b) How far has the bag fallen? (c) How far below the helicopter is the bag?

79. ## Word Problems

1. Express the area of a square as a function of its diagonal. 2. The height of a cylinder is half the diameter. Express the total surface area as a function of the height. SA = 2πh + 2πr^2

80. ## Physics

An airplane can reach a takeoff speed of 45 m/s (from rest) in 7.0 seconds. What is the minimum runway length required for a safe takeoff?

81. ## Science-Physics HELP

A S.S. automobile travels N at 40 km/h and a P.A. automobile travels E at 50 km/h. Relative to the observer riding in the S.S. auto what are the x and y components of the velocity of the P.A. car? The x axis is to the E and the y axis is to the N.

82. ## chemistry

What is the positively charged part of an atom called? electron or proton

83. ## physics

A wood block, after being given a starting push, slides down a wood ramp at a constant speed. What is the angle of the ramp above horizontal? The fact that there aren't any numbers involved here and a certain angle is required confuses me. I know it

84. ## spanish

please check my homework. 1. Yo__estoy___ en mi casa (in my house). 2. Jose, María, y yo _____estoy____ alegres. 3. Mario, tú, y yo ____estoy______ en el cine (at the movies). 4. El perro ___estamos_____ en el parque (at the park.) 5. Usted ____esta_____

85. ## Math - function problems

1) A box with a square base has a total surface area of 12m^2. Express the volume of the box as a function of the base edge. 2) A 10 foot tall lamppost causes a child 4 feet tall to cast a shadow of x feet on the ground. If the distance along the ground

86. ## chemistry

Which is the Standard International (SI) unit of temperature? Kelvin or Celsius

87. ## QNT561

Refer to the Baseball 2005 data, which reports information on the 30 major league teams for the 2005 baseball season. a. Select the variable team salary and find the mean, median, and the standard deviation. b. Select the variable that refers to the age

88. ## Physical chemistry

Calculate the pressure exerted by 1.0 mol C2H6 behaving as a perfect gas

89. ## math

what is algebra

90. ## english

What is mixed word order?

91. ## Physic

It is possible to shoot an arrow at a speed as high as 121 m/s. (a) If friction is neglected, how high would an arrow launched at this speed rise if shot straight up?

92. ## Physics

At t = 0, a stone is dropped from a cliff above a lake; 2.0 seconds later another stone is thrown downward from the same point with an initial speed of 33 m/s. Both stones hit the water at the same instant. Find the height of the cliff.

93. ## berkner

what would happen if correct new edvidence was discovered that did not agree with a weel established scientific theory?

94. ## GEOMETRY HELP!

Consider the following diagram and fill in the table: It's a diagram of circles with points around the circumference based off of the table. The table reads # of Points: 2, 3, 4, 5, 6 # of Regions: 2, 4, 8, ?, ? For the 5 points I got 16 regions when i use

95. ## English

Can you please check if the following questions are grammatically correct? Thank you very much. 1)What does Bassanio need money for? OR Why does.... He needs money so that he can go to Belmont and court Portia. 2) What solution does Antonio suggest to him?

96. ## maths

perform the indicated operation and simplify 1/16+3/32

4 x^3 - 4x^2 - 11x + 6 = 0 Need to solve the equation algebraically

98. ## English

I forgot to include the following sentences. 1) Express the following sentences using a proverb (or through a proverb) Example: Having too many people doing something usually causes problems. 2)Who does Shyloch pay to help him find his daughter Jessica? 3)

99. ## math

WRITE A PROBLEM IN WHICH YOU WOULD USE THE FUNCTION RULE y=20X

100. ## physics

A roller coaster travels 10.6 m at an angle of 15.0◦ above the horizontal. How far does it move horizontally? Answer in units of m.

101. ## Algebra

we need help and the steps to solve 5x-y=18 and 5x+6y=-38. we need the ordered pairs if any. So far we came up with (6,-9). Thanks Team A

110. ## physics

A roller coaster travels 10.6 m at an angle of 15.0◦ above the horizontal. How far does it move vertically ? Answer in units of m.

111. ## Family life

Give the marriage laws in The state of Georgia.

112. ## chemistry

how many significant figures does 221.5 have

113. ## statistics

A hotel installs smoke detectors with adjustable sensitivity in all public guest rooms. (a) State the null and alternative hypotheses. (b) Define Type I and II error. What are the consequences of each? (c) Which is more to be feared, and by whom? (d) If

114. ## Math

Explain how you would use a number line to round 148 to the nearest ten.

115. ## math

From a point on a straight road, two cars are driven in opposite directions, one at 44 miles per hour and the other at 35 miles per hour. In how many hours will they be 237 miles apart?

116. ## Math

How would you solve this if f(x)= {(3,5),(2,4),(1,7)}?: 1/f(x)

117. ## latin

WHAT DOES SILVAS CLARAS INSULAE MAGNAE SPECTATIS MEAN IN ENGLISH?

118. ## statistics

Use Excel to find the p-value for each test statistic.a. Right-tailed test, t = +1.677, n = 13 b. Left-tailed test, t = −2.107, n = 5 c. Two-tailed test,t = −1.865, n = 34

119. ## chemistry

labelled diagram of an experiment magnesium with oxygen

120. ## geography

Which is the largest sea, North, Mediterranean, Caspian or South China Sea?

solve (24e)^1/3 / (3e)^1/3

Explain how you would use a number line to round 148 to the nearest ten.

123. ## physics

A stone is thrown horizontally with an initial speed of 10 m/s from the edge of a cliff. A stop watch measures the stone's trajectory time from the top of the cliff to the bottom to be 4.3 s. What is the height of the cliff?

how can you change a one dollar bill into exactly 50 coins, using at least one penny, one nickel, one dime and one quarter please?

125. ## physics

Two parallel plates, separated by 10 mm, are charged to a potential difference of 50 V (that is, one plate is 0 V and the other plate is 50 V). Which of the following statements are true? the electric potential at the midpoint between the plates is 50 V

126. ## hcs 577

4. Why the U.S. health care system is considered complex?

127. ## chemistry

In the movie "The Raiders of the Lost Arc", Indiana Jones and his guide play catch with a gold idol. The idol had a volume of about 1.30 L. In order to determine whether they could really play catch with the idol, calculate the weight (in pounds) of the

128. ## English 2

12. In "Two Kinds", what motivated Jing-mei to keep silent about her performance at the piano recital, never discussing the recital with her mother? a. She fears her mother feels betrayed by her failure b. She thinks her mother will become angry if she

129. ## Geometry

B is the midpoint of AC, if AB=3x+4 and AC = 15x-19, find x and bc

130. ## English

Thank you very much for helping me. Can you check these sentences, too? Thank you. 1) According to Venetian law a debtor was given a thirty day grace period after the deadline in order to pay his debt. 2) If the debtor failed (or had failed) to pay the

131. ## Chemistry

What properties differ between the elements in the akali metals and the elements in the akaline earth metals? The akali metals have a charge of 1+, and the akaline earth metals have a charge of 2+.

Which expression repeersents the phrase'' twice the quotient of 50 and the sum of a number y and 8?''

2/3x-6=22

134. ## Chemistry

Which metals are good conductors of electricity? I only need like 3. This is what I have: -Copper, Gold, and Silver. Is that good?

135. ## hcs 577

5. Do health care organizations typically get paid based on their established charges? If not, explain how they do get paid.

136. ## chem "help"

What is the ratio of the activities of Zn 2+ and Pb 2+ in a solution that is in equilibrium with respect to sphalerite and galena?disregard hydrolysis effect

137. ## physics

An object is shot from the back of a railroad flatcar moving at 40 km/h on a straight horizontal road. The launcher is aimed upward, perpendicular to the bed of the flatcar. The object falls: a) in front of the flatcar b) behind the flatcar c) on the truck

Translate the phrase into an expression The product of 6 and a number y how would i write that?

139. ## economics

what does economy means?

simplify (e is positive) (24e)^1/3 / (3e)^1/3

141. ## Physics

how much work is required to extend an exercise spring by 15 cm if the spring constant k has the value of 800 N/m

Number of pages of a 5 page articile left to read if you read p pages.

143. ## math

Explain how a number can name something.

144. ## Math

Please help!! We can determine the time it would take an object to fall (if there were no air resistance) by using the formula where d is the distance.t=1/4sq.root of d, d being the distance 1. We can determine the time it would take an object to fall (if

145. ## algebra II

list all elements of the set {9,0 squareroot3, squareroot25,6/7,-110} that are elements of the set of rational numbers

146. ## physics

Two cars both start from rest and have the same constant acceleration. When radar is used to measure the velocity of each car, car A is found to be moving twice as fast as car B. At the instant the radar is used, car A has a displacement that is ______

wat is 7m-3m-6=6 can you please tell me how you got that answer?

148. ## ethics

what does kant mean by a good will without qualification?

149. ## geometry

B is the midpoint of line AC. If AB = 12x-5 and BC = 4x + 15. Find x and BC.

150. ## Geometry

Consider the following diagram and fill in the table: It's a diagram of circles with points around the circumference based off of the table. The table reads # of Points: 2, 3, 4, 5, 6 # of Regions: 2, 4, 8, ?, ? For the 5 points I got 16 regions when i use

151. ## Cultural Diversity

What are the linguistics of Puerto Rican Americans

152. ## 9th Grade Algebra 1

I need someone to tell me how to do these kinds of problems (In great detail please) -5x=9-2x -8x-10=4x+14

153. ## SCIENCE

A car going at 30 m/s undergoes acceleration of 2 m/s^2 for 4 sec. What is its final speed? How far did it travel while it was accelerating? acceleration=the change in velocity/(divided by) the change in time plz help thx

154. ## Statistics

An educator wants to estimate the proportion of school children in Boston who are living with only one parent. Since their report is to be published, they want a reasonably accurate estimate. However, since their funding is limited, they do not want to

155. ## physics

A spring with a spring constant of 1.50 102 N/m is attached to a 1.2 kg mass and then set in motion. (a) What is the period of the mass-spring system? s (b) What is the frequency of the vibration? Hz

156. ## physics

A child's toy consists of a piece of plastic attached to a spring, as shown below. The spring is compressed against the floor a distance 1.8 cm and released. If the spring constant is 107 N/m, what is the magnitude of the spring force acting on the toy at

157. ## physics

In preparing to shoot an arrow, an archer pulls a bowstring back 0.43 m by exerting a force that increases uniformly from 0 to 268 N. What is the equivalent spring constant of the bow? N/m

158. ## biology

an atom that gains for loses electrons has an electrical charge and is called an _____.

159. ## Math

Explain how numbers can be used to name something.

160. ## Geography

What is the largest river that empties into the Pacific Ocean?

161. ## SCIENECE!!

A car going at 30 m/s undergoes acceleration of 2 m/s^2 for 4 sec. How far did it travel while it was accelerating?? Plz help thx

162. ## US History

Need help with this-- Should English be declared the official language of the US? List three effects that you believe such a law would have. Then write one paragraph explaining your position. I think it should be declared the official language, but I'm not

163. ## biology

_________ occur when bonds are broken or formed

10x-5=21-3x

165. ## Math

Use the limit definition of the derivative to find f′(x) if 1. f(x) = x^2 + 3x 2. f(x) = 1/x + 1 kk for number one i got f'(x) = 2x+3 and for number two i got f'(x) = -1/(x+1)(x+1) can any one verify these, especially number 2.

203. ## college: psychology

3. Define proactive & retroactive inhibition. Create a memory strategy to help you remember & discriminate between them. Explain this strategy well enough so that a reader could learn to use it.

204. ## 4th grade Shurley English

Do I need a comma after 1893 in the sentence "Basketball was then introduced in 1893 in France."? Thanks.

how do I break apart to divide

206. ## physics

if you jump upward with a speed of 2mls, how long will it take before you stop rising?

207. ## college economics

Assume Nebraska and Virginia each have 100 acres of farmland. The following table gives hypothetical figures for yield per acre in the two states: Nebraska Virginia Wheat 15 5 Cotton 7 4 Who has the comparative advantage in the production of wheat? *For

208. ## scinece

In the United States, rank order the users of energy from smallest to biggest: Smallest Biggest a) industry home transportation b) transportation industry homes c) homes industry transportation d) homes transportation industry e) transportation homes

209. ## biology103

what consists of the interactions between groups of different individuals and the nonliving factors in a particular area

210. ## math

I am trying to find a pattern in these numbers. I have looked for what feels like hours, and can't find it. -3,-9,-14,-42,-47,-141

211. ## health

Case Study â€“ Memorial Health System CPOE Implementation Identify at least five indicators of project failure that manifest themselves in this case study. 2. For each of those indicators, describe what you might have done differently to eliminate or

212. ## physics

a basketball player can leap upward 0.5m. what is his initial velocity at the start of the leap?

213. ## science

U.s. citizens use _______ energy than do people in other countries with about the smae or even higher standard of living. a) much less b) a little less c) a little more d) much more d

214. ## AP Stats

I generally know how to use the normalcdf function on my calculator, but how to I find the area under a normal curve if there is no lower limit or no upper limit? For instance, we are required to use a calculator on this problem: Find the area under the

215. ## chemistry

What is the concentration of this solution? If you added 10mL of water to the 10mL of 0.010M CaCl2 solution.

216. ## high school

what arguements did the thinkers of the classical civilzations of greek, china, and india use to explain and justify the great differences in social status and material wealth

217. ## math

whats the sum of a number and -5 and a number

218. ## Language Arts

What are 5 general elements or characteristics of the tall tale John Henry?

i am a 5 digit number my tens digit is the sum of my hundreds digit and thousands digit. my tens digit is twice my ones digit.my hundreds digit is 1 more than zero.my thousands digit is seven times my hundreds digit.my ten thousands digit is the same as my

220. ## Science-Chemistry

Analysis questions: A) What evidence is there that the gas bubbles formed in the first part of the investigation were hydrogen gas? Answer: Evidence there was that proved that the gas bubbles formed in the first part of the investigation were hydrogen gas

what is 117 put in simplest form

What 5 types of changes would take place in Canadian citizens if Canada were to become self-sufficient. (our teacher said they can be positive and others negative, but personally I don't think it would be negative? please help!!

223. ## physics

A truck has to travel at what speed to stay underneath an airplane traveling at 105 kg/h at 25% angle to the ground.

224. ## alegebra

1. Many people know that the weight of an object varies on different planets, but did you know that the weight of an object on Earth also varies according to the elevation of the object? In particular, the weight of an object follows this equation: , where

225. ## structure / physic

1. Aquarium (Retaining Buttresses) Background: In a liquid, pressure develops from the weight of the liquid above any point. That pressure is called Hydrostatic pressure and acts equally in all directions. The pressure at any given depth is given by the

226. ## chemistry

A solution is made at room temperature containing 90 g of NaCl and 200 g of water. It is brought to a temperature of 50°C. What are you most likely to see? (Select all that apply.) A. a solution with a few crystals at the bottom B. all the solid dissolve

227. ## drama

Any ideas for a funny parody fairytale - good still winning over evil? I also need to make a role play out of this, so any ideas to do with plays are greatly appreciated.

229. ## English

Here are some more sentences on school rules I'd like you to revise. Thank you very much for all. 1) You are not allowed to change your sitting order unlesstold by your tutor. You have to sit in the same place when you are in the linguistic laboratory.(how

230. ## English

I forgot to include these other sentences I'm not sure of. 1) I joined the Scouts in 1990. I went on a summer camp with the Scouts in July. 2) We camped in the mountains. We put up our tents as soon as we got there. 3) In the evenings() we made bonfires

231. ## john marshall

i don't understand how to do this prblem what is ab=x +7,bc=17,ac =2x

232. ## Social science

I want some highlights on a course called economics education

233. ## geometric series

what is the nth term equation for a geometric sequence with a1 = 36 and r = 1/3

234. ## geometry

1) In a regular polygon the difference between the interior angles of a (n-1)sided polygon & (n+1)sided polygon is 9. find n? 2) In a regular polygon the difference between the exterior angles of a (n-1)sided polygon & (n+2)sided polygon is 6. find n?

235. ## Data Communication Networking

Fill-in the Blank: The ____ layer of the OSI model performs a series of miscellaneous functions necessary for presenting the data package properly to the sender or receiver. Choices: transport presentation applications sessions

236. ## Maths

This mystery number has 3 digits.Its digits are in the descending order. The hundreds' digit is two more than the ones' digit. If you add the 3 digit it gives you a dozen. Guess this mystery number?

237. ## molal

the freezing point of ethanol (C2H5OH) is -114.6C. the molal freezing point depression constant for ethanol is 2.00C/m. what is the freezing point (C) of a solution prepared by dissolving 50.0 g of glycerin (C3H8O3, A nonelectrolyte) in 200 g of ethanol.

238. ## maths

This mystery number has four digits. Each digit is an even number. All the digits are different. It is the greatest number that can be described that way. guess this mystery number?

Im confused please help thank you To find the volume of a box, you multiply the length times the width time the height. The colume of a box is 36,000 cubic inches. Its width is 40 in and its height is 15 in. Eatimate the length of the box.

240. ## math

how is .83 equal to 5/6

241. ## calculus

solve the equation: 6P=Pe^1.1t

longest multiplication combination for 210

243. ## Biochem

HEPES, is a commonly used component of physiological buffers. The PKa of the protonated amino group of HEPES is 7.55 at 25C. Describe the preparation of 1.00L of 0.100M HEPES buffer, pH 8.00, from the sodium salt of the basic form of HEPES (MW 260.3), .0M

21=5-3=7-9*2=

245. ## Geometry

Consider the following diagram and fill in the table: It's a diagram of circles with points around the circumference based off of the table. The table reads # of Points: 2, 3, 4, 5, 6 # of Regions: 2, 4, 8, ?, ? For the 5 points I got 16 regions when i use

246. ## Tricky Math Question

15, 10, 13, 14 There are four bags of marbles. One of them contains 15, one of them contains 13, one contains 10, and the other one contains 14 marbles. If I remove three marbles (must be three) and distribute one each of the other bags, that would be ONE

247. ## calculus

Solve: sec(x)^2= 3tanx +1 *** It is suppose to be the sqaure root of 3 but i could find the symbol so just wrote the 3 without it but it is suppose to be the square root of 3 times tanx + 1

248. ## Physics

A hockey puck sliding on a frozen lake comes to rest after traveling 160 m. If its initial velocity is 2.3 m/s, what is its acceleration (assumed constant)? Answer in units of m/s2.

249. ## Geometry

Consider the following diagram and fill in the table: It's a diagram of circles with points around the circumference based off of the table. The table reads # of Points: 2, 3, 4, 5, 6 # of Regions: 2, 4, 8, ?, ? For the 5 points I got 16 regions when i use

250. ## calculus

Find all possible radii of circle centered at (3,6) so that the circle intersects only one axis

251. ## phy

Two crates, of mass m1 = 60 kg and m2 = 130 kg, are in contact and at rest on a horizontal surface (Fig. 4-54). A 620 N force is exerted on the 60 kg crate. The coefficient of kinetic friction is 0.15. (a) Calculate the acceleration of the system.(to the

252. ## math

how do you cange 14/30 into a desimal and precent?

253. ## MATH 116

• How do you know when an equation with one variable has infinitely many solutions? • How do you know when an equation with one variable has no solution? • How do you know when an equation with one variable has one solution? • Give an example of

254. ## Science

What is it called when scientists do their experiments more than once to reduce chance errors?

255. ## Data Communications / Networking

True Or False: Network Architectures are cohesive layers of protocols defining a set of communication services.

256. ## geometry

At rosemead high school, 94 students take biology, 86 take ethnic studies, and 95 take geometry. thirty-seven students take both biology and geometry, 43 take geometry and ethnic studies, and 42 take ethnic studies and biology. twenty eight students take

257. ## math

6.the difference of 8 and 5 is? 7.the expanded from of 654 is 600+50+____

258. ## biology

Which of the following problems do immigration and emigration pose for demographers?

what do you think is some good ideas for a journal as an artisan, a knight, a farmer, a mother with small children, a feudal lord, or a merchant.

260. ## science

how can my son a 5th grader be able to design an expermient with a lab report that theaches others how to use a balance correctly

261. ## Physics: Data Analysis - Power Law

In an experiment, two variables quantities 'x' and 'y' were measure. The relation between x and y is thought to be y=ax^(1/2) x(m)+/- 0.01m 0.10 0.20 0.40 0.80 1.00 y(s) +/- 0.05s 0.64 0.90 1.27 1.80 1.90 a) What will you graph in the y- and x- axis in

262. ## government

Without the _____ to implement them, the decisions of Congress would have no meaning

263. ## math

If a failure rate is 0.15 what is the probability of 5 failures in a row?

264. ## Physics

I have a quick question, If a ballplayer catches a ball 3.0s after throwing it vertically upward. With what speed did he throw it, and what height did it reach?

265. ## geometryy

the intersection of two distinct planes can be a _ or a _?

266. ## biology

A solution of the enzyme amylase was added to a solution of starch and kept at 25C. The starch was broken down by hydrolysis. Explain how you would determine the rate of hydrolysis.

267. ## computers

· Write a 200- to 350-word paper that describes the distinctions of data and information and briefly explains the process a computer uses to convert data into information. o Consider the following: Computers use a completely different language than

268. ## math

Use the limit definition of the derivative to find f′(x) if 1. f(x) = x^2 + 3x 2. f(x) = 1/x + 1 now what i am confuse with is that there is no value given for x. So how is one suppose to do these problems. please show steps and this is just the 3rd