# Questions Asked onJanuary 31, 2013

1. ## Math

Find the area for the circle (use 3.14 for pi). Show your work. Round to the nearest tenth. the radius is 23 yd 22. Find the circumference of the circle (use 3.14 for pi). Show your work. Round to the nearest tenth. the raduis is 23 yd

2. ## Math PLZ HELP

1. Which of the following expressions is written in scientific notation? 1. 73.4 x 105 2. 0.09 × 107 3. 80 x 103 4. 4.22 x 10–3 2. Which of the following is 0.0000000708 written in scientific notation? 1. 7.08 x 10–8 2. 7.8 x 10–8 3. 708 x 10–10

3. ## Chemistry

Which ligand binds the tightest? Ligand A, with a Kd of 10^-9M Ligand B, with a Kd of 10^-3M Ligand C, with a percent occupancy of 30% at one micromolar Ligand D, with a percent occupancy of 80% at 10 nm

4. ## chemistry

A gas has a volume of 590mL at a temperature of -55.0C What volume will the gas occupy at 30.0C Can someone help me?

5. ## science

An empty relative density bottle weighs 25g.it weighs 65g when filled with a liquid and 75g when with water.caculate the density of the liquid.

6. ## math

cynthia ate 1/4 of the pizza. if the pizza has egiht slices how many slices left?

7. ## Probability

A number cube has six faces numbered 1 to 6. John tossed two number cubes several times and added the number each time.

8. ## physics

A positively charged glass rod is brought close to a neutral sphere that is supported on a nonconducting plastic stand. Sketch the distribution of charges on the sphere if it is made of: a) Aluminum b) Non-conducting plastic

9. ## Help me

11. Name the triangles that are classified by angles. right, scalene, isosceles scalene, isosceles, equilateral acute, right, obtuse obtuse, isosceles, acute 12. Classify the triangle by side length and angle measurement. scalene, acute isosceles, acute

10. ## science:Chemistry

Find the pH of a solution obtained by mixing 100cm3 of 01MHCl solution with 100cm3 of 0.2M NaOH

12. ## General Chemistry

How many milliliters of 0.5M NaOH must be added to 200 mL of 0.1M NaH2PO4 to make a buffer solution with a pH of 6.9?

13. ## science

what are the steps of the scientific method in order?

14. ## math

1. Which of the following expressions is written in scientific notation? 1. 73.4 x 105 2. 0.09 × 107 3. 80 x 103 4. 4.22 x 10–3 2. Which of the following is 0.0000000708 written in scientific notation? 1. 7.08 x 10–8 2. 7.8 x 10–8 3. 708 x 10–10

15. ## Literature

I need help doing a chapter by chapter analysis of the short story Flags Waving by Carolyn Steele Agosta

16. ## Literature

I am desperate for help with this assignment...a short chapter by chapter analysis of the book The Secret Life of Bees by Sue Monk Kidd.I need to summarize the plot of each chapter, include what I found out about the characters in each chapter, list any

17. ## physics

A golfer hits a shot to a green that is elevated 3 m above the point where the ball is struck. The ball leaves the club at a speed of 16.1 m/s at an angle of 41.1° above the horizontal. It rises to its maximum height and then falls down to the green.

18. ## Math

Carl has three lengths of cable,5/6 yard long,1/4 yard long and 2/3 yard long.he needs at least one yard of cable. Which two pieces together Make a k Length at least 1 yard and closest to one yard

19. ## chemistry

A 1.800 g sample of octane, C8H18, was burned in a bomb calorimeter whose total heat capacity is 11.66 kJ/°C. The temperature of the calorimeter plus contents increased from 21.12°C to 29.85°C. What is the heat of combustion per gram of octane? What is

66. ## Pre-Calculus

A pomegranate is thrown from a ground level straight up into the air at time t = 0 with velocity 67 feet per second. Its height at time t seconds is f(t)=-16^2+67t. (a) Find the time it hits the ground and (b) the time it reaches its highest point. (c)

67. ## maths

a verandha is 40m long and 15m it is paved with stone each measuring 6dm by 5 dm. find the number of stones required.

68. ## physics

Suppose that on earth you can throw a ball vertically upward a distance of 2.39 m. Given that the acceleration of gravity on Mars is 3.80 m/s2, how high could you throw a ball on Mars? (Take the y-axis in the vertical direction, and assume that the

69. ## Chemistry

A sample of gas occupies a volume of 63.1 mL. As it expands, it does 130.4 J of work on its surroundings at a constant pressure of 783 torr. What is the final volume of the gas? I know that P= 1.03 ATM when converted. I think I'm supposed to use the

70. ## calculus 2

An object thrown in the air on a planet in a distant galaxy is at height s(t) = -20t^2 +67t +42 feet at time t seconds after it is thrown. a) From what height was the object thrown? b) With what velocity was the object thrown? c) What is the acceleration

71. ## Physical science

A create is pulled across a horizontal surface with a force of 100N which makes an angle of 30 degrees with a horizontal.(a)draw a diagram of the horizontal and vertical components of the force.(b)resolve the force in its parallel and

72. ## Chemistry

If you have 1 mole of baking soda (NaHCO³), then about how many atoms of oxygen do you have?

98. ## Physics

A proton collides head on with a helium atom at rest. Their combined velocity after the collision is 8 x 10^5 ms^-1. Calculate the initial velocity of the proton. *** HELP PO PLEASE!!

99. ## Physics

Water has a mass per mole of 18.0 g/mol, and each water molecule (H2O) has 10 electrons.

100. ## science

1. Oxygen moves easily out of blood capillaries into cells because ___________. (1 point) the walls are very thin because it is very small because other gases push it out cells need the oxygen 2. Which of the following statements is false? (1 point)

101. ## Physics

A metal sphere has a charge of -6 µC. How many excess electrons are there on the sphere?

102. ## Physics

A soccer ball is released from the top of a smooth incline. After 3.80 s the ball travels 9.1 m. One second later it has reached the bottom of the incline. Assume the ball's acceleration is constant and determine its value ( m/s2)

103. ## History

"They [Jackson and his supporters] see nothing wrong in the rule that to the victor belong the spoils of the enemy." -William Learned Marcy of the U.S. Senate What did Marcy mean by the "spoils of the enemy"?

104. ## Math

Gracie pattern of increasing perfect squares is shown 25,36,-------,64,81,100. What number does she need to to square to find the missing term? 5, 6,7,8

105. ## math

If pump A and pump B work together, they can fill a pool in 4 hours. Pump A, working alone, takes 6 hours to fill the pool. How long would it take pump B, working alone, to fill the pool?

106. ## PHYSICS

WHAT IS OSMOSIS,MATTER,DIFFUSION AND GAS LAW

107. ## Science

an idea that is based on many detailed observations _ _ E _ _ _ a part of an organism that can be used for identification _ _ _ _ _ _ _ R _

108. ## Mathematics

Linear inequality, 2x+6 < 5(x-3)

109. ## Science 8R - HW Qs. Check

How long does it take the earth to rotate on its axis? my answer - 365 days right????

110. ## Physics

A baseball is hit with a speed of 29.0{\rm m/s} at an angle of 44.0{\rm ^\circ} . It lands on the flat roof of a 10.0{\rm m} -tall nearby building. If the ball was hit when it was 1.4{\rm m} above the ground, what horizontal distance does it travel before

111. ## Algebra

1. What is the equation an ellipse with foci at (0, ±2 √10 ) and x-intercept at (9, 0)? 2. What is the equation of an ellipse with foci at (±4, 0) and a minor axis of length 6?

112. ## science

If you start with 0.054 M I2 at this temperature, how much will remain after 5.42 s assuming that the iodine atoms do not recombine to form I2?

113. ## math

A 6 ft tall person cast a shadow 15 ft long. At the same time a nearby tower casts a shadow 100 ft long. Find the height of the tower.

114. ## physics

Find the position and velocity of a particle at t = 1.92 s if the particle is initially moving east at a speed of 18.4 m/s and experiences an acceleration of magnitude 3.96 m/s2, directed west.

115. ## calculus 1

particle moves along a straight line with equation of motion s = f(t), where s is measured in meters and t in seconds. Find the velocity and speed when t = 6. (Round your answers to two decimal places.) f(t) = t−1 − t velocity m/s speed m/s

116. ## Math

The area of a rectangle is 12 and the width is 3/4 the length. What are the dimensions?

117. ## Calculus

If f(x)=sqrt(14x) a)find f' (x) b) find f'(4)

118. ## Chemistry

A researcher studying the nutritional value of a new candy places a 4.30-gram sample of the candy inside a bomb calorimeter and combusts it in excess oxygen. The observed temperature increase is 2.77 °C. If the heat capacity of the calorimeter is 28.90

119. ## Algebra

The sum of two consecutive integers is -15. what is the product of the two integers?

120. ## physics

dipole consisting of charges 300 apart, is placed between two very large (essentially infinite) sheets carrying equal but opposite charge densities of 140

121. ## Differential Equations

Consider the differential equation: dy/dt=y/t^2 a) Show that the constant function y1(t)=0 is a solution. b)Show that there are infinitely many other functions that satisfy the differential equation, that agree with this solution when t0 [Hint: you need to

122. ## math

A pharmacist mixes 14 ounces of 68% saline solution with 55% saline solution. If the final mixture is 62% saline, how many ounces of the 55% solution were used?

Pattern of increasing perfect squares is shown25,36-----64,81,100,what is needed to square to find the missing term,5,6,7,8.....how do I find the answer.

124. ## math - regression line - thank you

The question states: Plot the regression line from D = 40 to D = 300. My question: Do you extend the line beyond those 2 points (as in going towards the axis) or does the regression line just connect those 2 points like a line segment? Thank you

125. ## Differential Equations (Another) Cont.

For the following initial value problem: dy/dt=1/((y+1)(t-2)) a)Find a formula for the solution. b) State the domain of definition of the solution. c) Describe what happens to the solution as it approaches the limit of its domain of definition. Why can't

126. ## ??/

1. Oxygen moves easily out of blood capillaries into cells because ___________. (1 point) the walls are very thin because it is very small because other gases push it out cells need the oxygen 2. Which of the following statements is false? (1 point)

127. ## Physics

A proton collides head on with a helium atom at rest. Their combined velocity after the collision is 8 x 10^5 ms^-1. Calculate the initial velocity of the proton. *** HELP PO PLEASE!!

128. ## MATH

PAM HAS A BOX IN THE SHAPE OF A RECTANGULAR PRISM. THE HIGHT IS 14 1/2 INCHES, THE WIDTH IS 6 1/2 INCHES AND THE LENGTH IS 10 1/2 WHAT IS THE VOLUME OF THE BOX?

129. ## Chemistry

At what temperature will the rate constant for the reaction have the value 6.5×10−3 M/s? (Assume k = 5.4 * 10^-4 M/s-1 at 599K and k = 2.8 * 10^-2 M/s at 683K .)

130. ## physics

A hot-air balloon is rising straight up with a speed of 6 m/s. A ballast bag is released from rest relative to the balloon at 7 m above the ground. How much time elapses before the ballast bag hits the ground?

131. ## Maths

If eight 5p coins weigh 26g how much does three 5p coins weigh?

132. ## algebra

Please help me. Find the equation of the line satisfying the indicated properties. Express your answer in slope-intercept form. Passing through point (-2, 4) and perpendicular to the line containing points (3, -1) and (5, -1).

133. ## Physics

In the figure below, an electron is moving rightward between two parallel charged plates separated by distance d = 2.40 mm. The particle is speeding up from an initial speed of 3620 km/s at the left plate. ｜ ｜ ｜ ○→ ｜ ｜ ｜ -70V -50V What is

134. ## Simple Math

Two eight-sided number cubes are thrown. Given that one of the cubes shows a five, what is the probability that the sum of the numbers that come up on the two cubes is six?

135. ## Soanish

How do you say i spanish: "The hospital is far from the house" Thank You

Late payment of medical claims can add to the cost of health care. An article (M. Freudenheim, “The Check Is Not in the Mail,” The New York Times, May 25, 2006, pp. C1, C6) reported that for one insurance company, 85.1% of the claims were paid in full

137. ## English

He has stopped taking boxing lessons and goes to the ballet class. (In this sentence, what does 'class'mean? Does 'class' mean 'lesson'? Or does 'class' mean the 'class' as in ' He is a student of Class 1-1'?)

138. ## english

essay on "modernity is a question not of time but of outlook".What do u mean by this"

139. ## Finance

An investment pays 9 percent interest compounded semi-annually. What is the effective annual interest rate?

140. ## Physics

Air is vibrating in a tube (closed at both ends) at its fundamental frequency of 160 Hz. If the tube is filled with helium instead, what is its fundamental frequency? Use 1020 m/s for the speed of sound in helium.

141. ## smitty

is 8m cubed - 25 prime?

142. ## Math

If Im naming fractions are these fractions in the right order from least to greatest? 1/4 1/3 1/2?

143. ## Algebra

Evaluate the expression.(50) How do I solve this expression? Can you show work. Thanks.

144. ## eng

i need to get a good these statement of the poems el olvido and quinceanera by judit ortiz cofer. I need to analise them how can a do it?

145. ## physics

A golfer hits a shot to a green that is elevated 3 m above the point where the ball is struck. The ball leaves the club at a speed of 16.1 m/s at an angle of 41.1° above the horizontal. It rises to its maximum height and then falls down to the green.

146. ## Chemistry

MIke and Shayne reacted sodium chloride with silver nitrate as indicated in the reaction below: AgNO3(aq) + NaCl(aq) → AgCl (s) + NaNO3 (aq) The actual yield of their silver chloride was 0.365 g. According to their calculations, they should have

147. ## Math 8R - HELP!

Multi-Step Equations Systems of Equations x + y = 0 5x + 2y = -3 this is what i got so far.... x + y = 0 ----> x = 0 - y 5x + 2y(0-y) = -3 please help!!!!

148. ## Chemistry

How many grams of lithium nitrate are needed to produce 100 grams of lithium sulfate when lithium nitrate reacts with lead (IV) sulfate to form lithium nitrate and lead (IV) nitrate

149. ## physical

A student is standing in the basket of a hot air-ballon which is moving upwards at a constant speed of 15 m.s.-1.He leans over the edge of the basket and lets go of the sandbag which takes 5 seconds to reach the ground.what is the acceleration of the

150. ## Physics

what is the number of grams of steam at 100 degrees C that will condense as 5g of ice at 0 degrees C melts?

151. ## Math

In a clinical trial, a drug used to relieve pain caused side effects in 7% of the patients who took it. For a new trial, two patients were selected at random. Find the probability that neither of the patients had side effects

152. ## algebra

Solve the system of equations by first writing it in matrix form and then using Gauss-Jordan elimination. x-4y =-5 -2x + 9y = 125

153. ## Chemistry

I am trying to study for my chem test but I don't get how to answe this question A researcher explores the ideal gas equation. He measures the pressure of a system at different temperatures ( keeping the volume and moles of the gas constant) and creates a

154. ## Differential Equations

Consider the differential equation: dy/dt=y/t^2 a) Show that the constant function y1(t)=0 is a solution. b)Show that there are infinitely many other functions that satisfy the differential equation, that agree with this solution when t0 [Hint: you need to

155. ## Geometry-8th gr

The geometric mean x of two numbers is the positive value of x that satisfies the proportion a/x =x/b, where a and b are given. Find the geometric mean of 16 and 9.

156. ## Physics

A proton collides head on with a helium atom at rest. Their combined velocity after the collision is 8 x 10^5 ms^-1. Calculate the initial velocity of the proton. *** HELP PO PLEASE!!

157. ## math

I have rabbits abd chickens. Between them, I count 35 heads. How many rabbits and how many chickens do I have?

158. ## physics

A body is allowed to fall from rest through a vertical height of 8.45 m. Gravitational acceleration is 9.8 mis2. Calculate the velocity of the body at the end of the fall.

159. ## physics

The relative Density of an alloy is 65.(a) find the mass of a solid alloy cube of side 20cm.(b) what vol of the alloy has a mass of 13kg? Please explain in details

160. ## math

change a mixed number to an improper fraction 8 1/2,

161. ## English

in great expectations what is ironic about miss. jones not going to church

162. ## Differential Equations

For the following initial value problem: dy/dt=1/((y+1)(t-2)), y(0)=0 a)Find a formula for the solution. b) State the domain of definition of the solution. c) Describe what happens to the solution as it approaches the limit of its domain of definition. Why

163. ## Math

A pot contains 6 liters of brine at a concentration of 120g/l. How many liters of the water should be boiled off so that concentration of the brine is 200g/l.

164. ## music

I need to write a essay paper on the comparing Bouree by (Bouree in e minor for lute)and Bouree by Jethro Tull.

165. ## algebra

Express the system as an augmented matrix and solve using Gaussian elimination. x=+2y+z=3 2y+3z =2 -x+2z = 1

166. ## science

An object is projected vertically upwwards at 8 meters per second from the roof of a building which is 60 meters high.it strikes the balcony below in 4 seconds.What is the velocity at which the object strikes the balcony?

167. ## English

In the book "From the land I lost" by Huynh Quang Nhuong, To what does the title of this selection refer?

asked by T.J And the Vibe
168. ## Finding the Activation Barrier

Q: A reaction rate has a constant of 1.23 x 10-4/s at 28 degrees C and 0.235 at 79 degrees C. Determine the activation barrier for the reaction. A: My work thus far: ln(1.23 x 10-4/0.235)=(Ea/8.314)(1/79-1/28) -7.551=(Ea/8.314)(0.01265-0.03571)

169. ## world history

what page can i find "Hoe Ana on in our world by macmillan/mcgraw-hill

170. ## Science - Waves - Sci. Notation

I know that the formula to calculate the speed of light is c=fλ. F is the frequency, c is the speed, and λ is the wavelength. So how do I calculate the wavelength of a purple light with a frequency of 750 * 10^12 HZ. Frequency is measured in HZ. The

171. ## Physics

A puck is moving on an air hockey table. Relative to an x, y coordinate system at time t = 0 s, the x components of the puck's initial velocity and acceleration are v0x = +0.8 m/s and ax = +0.9 m/s2. The y components of the puck's initial velocity and

172. ## art

1. This style of painting is about expressing the artist's feelings. (1 point) geometric abstraction pop art abstract expressionism impressionism 2. This is one main ingredient of paint. (1 point) fresco pigment impasto glue 3. This term refers to a thick

173. ## math

What is the formula for volume?

adding and subtracting mixed numbers in lowest terms; 5 1/2 - 2 4/5, I got as far as 3 46/10 but don't know how to break it down into lowest term.

175. ## life skill

Can you please tell me the names of the people who can be an inspiration for Time management communication hobbies self descipline technologies? These peoples should be famous and should be an example for the above qualities, separate peoples for separate

176. ## math

a baker made 100 dozen cookies she sold 3/5 of them before noon how many dozen were sold before noon

177. ## chemistry

sodium metal dissolves im liquid mercury to form of NA(s) and Hg(l) are 0.97 g/ml and 13.6 g/ml respectively. a sodium amalgoum is made by dissolving 10 ml Na (s) in 20.0 ml Hg (l). The final volume of solution is 21.0 ml. Calculate the molarity of Na in

178. ## Math

On a graph how would I fill out the missing spaces? _ _ _ _ 1 _ _ _ _ 2 _ 1/8, 1/6, 1/4, 1/2, 1, 1 1/8, 1 1/6, 1 1/4 ,1 1/2, 2, 2/8?

179. ## Physical science

9 mol HI(g)is sealed with H2(g)in an empty 2 dm container when equilibriup is reached by the reaction..H2(g)+I2(g)=2HI(g) at 130 C it found that there are 5 mol HI(g)in the equilibrium mixture.calculate the equilibriup constant

You are a technical writer in a large company, working on a training manual to help new users learn the companys computer system. Employees will use your manual in training seninars taught by your company's trainers. The manual will also serve as an on the

181. ## math

Complete the division sentences and then write a full multiplication equation. (#5) 5 ÷ 1/7 = (#6) 4 ÷ 1/8 = Please help me.

182. ## Movement & Music

A movemnt program that emphasizes divergent prolem solving, discovery, and self-expression to foster creativity utilizes the _______ teaching method. a. command instruction b. direct instruction c. exploration d. guided discovery I chose D...

183. ## Spaish

How do you say this in spanish? "I have just ate" I thnk it's like this- "Acabo de comer" How do you say this in spanish? "We have just danced" I think it's like this- Acabamos de bailamos. Thank You

184. ## math

The question states: Plot the regression line from D = 40 to D = 300. My question: Do you extend the line beyond those 2 points (as in going towards the axis) or does the regression line just connect those 2 points like a line segment?

185. ## science

Which example below provides a complete scientific description of an object in motion? A The marble changed position quickly B The car traveled north C The marble moved 30 cm north in 6 seconds D The ball rolled 20 cm in 5 seconds

186. ## Physics

A block of wood (10-kg) at rest is hit by a bullet (50-g) that embeds itself in the block and causes both to now move at 2.7-m/s eastward. What is the initial velocity of the bullet?

187. ## Geometry

THE VOLUME OF AN OBLIQUE CONE WITH EQUAL DIAMETER AND HEIGHT IS 18*3.14CM^3. FIND THE HEIGHT AND RADIUS (TO THE NEAREST CM). PLEASE HELP THIS IS MY LAST TEST AND I GRADUATE!!! THANKS SO MUCH!!

188. ## Calculus

Let f(x)=5x^(1/4)(x^3-10). Evaluate f'(x) at the following points: a) f'(3) b) f'(5)

189. ## Calc

Which of the following represents the actual change in the value of y when the value of x has changed in f(x)? delta y dy f'(x) f'(x)dx

190. ## Analytic Geometry

What is the equation of the circle touching the lines x-3y-11=0 and 3x-y-9=0 having its center on the line x+2y+19=0

191. ## Physics

If a 60 kg meteor falls to earth from a great distance. How much gravitational potential energy does it lose? (the energy PE is 0 at a great distance). What happens to this potential energy? Final-Initial=-Gmm/r-0=change in energy

192. ## math

A particle started from the origin and the components at time t are 2t+3 and 4t.find the path

193. ## math

convert the improper fraction to a mixed number 11/9.

194. ## english communication

1. Good writing costs companies money and these costs increase significantly if the communication is ineffective. Which of the following pairs would NOT be two additional costs to the company if written communication is poor? A .Paper and wasted time B.

195. ## math

Identify the solution(s) of the system of equations, if any. 3x + 2y = 4 5x - 4y = 3 a) (1, 0.5) b) (0, 5.1) c) (5,5.5) d) (5/11, -2/11)

196. ## Chem

A researcher explores the ideal gas equation. He measures the pressure of a system at different temperatures ( keeping the volume and moles of the gas constant) and creates a plot of P versus T. What is the slope of the line that results if the volume is

197. ## algebra

Please tell me IF there is a solution to this question (or is it misprinted). Can this be solved? Jenny has 11 coins in her pocket, all of which are either nickels or dimes. If the value of the coins is 754, how many of each type of coin does she have?

198. ## algebra

How is this problem solved? It takes Bobby 60 minutes longer to wax the car than it does his brother Kevin. Together it takes them 50 minutes to wax the car. How long does it take each working separately?

200. ## calculus

1) equation; sum= (1-(1+i)^-n / i 2) equation; sum= r(1+i)^-1 + r(1+i) ^-2 + r(1+i)^3 +...+ r(1+i)^-(n-1) + r(1+i)^-n im suppose to simplify second equation into the first one but im messing up somewhere if anyone can tell me the first 3-4 steps i think i

201. ## algebra

PLEASE help. Solve the system of equations by first expressing it in matrix form as and then evaluating. a). 3x-2y=5 4x-y =-10 b). 3x -2y =-2 4x -y = 3

202. ## algebra

Please help with: Express the system as an augmented matrix and solve using Gaussian elimination. x=+2y+z=3 2y+3z =2 -x+2z = 1

203. ## Physics

how much heat energy needed to convert 125g ice 27 deg C to 50 deg C

204. ## math

find d value of * in given equation

205. ## WAN

Provide a hypothetical situation for each signal type that illustrates how it could be, or is being, used in a WAN. In what circumstance, for example, would a company choose to use a satellite signal

206. ## Organic Chemistry

Why is the melting point of a known compound (ex. acetanilide) determined before the melting point of the unknown compound? I think it is to determine if the unknown is a pure substance but I am not sure..I just need to be pointed in the right direction.

207. ## Movement & Music

Children who do poorly in school are primarily ________ learners. a. auditory b. kinesthetic c. spatial d. visual I think C is correct..

208. ## Intro to Computer Engineering

When solving 5x^2-50x+125=0, a space alien got x=8 for one of the two roots. What possible base could the alien be using? (Note: the coefficients are also in this base. That is 5,50,125 are all in this mystery base as well)

209. ## Math/Physics

Two identical tuning forks have frequencies of 512 Hz. If one is held by a listener while the other approaches at a speed of 7.2 m/s, what does the listener hear?

210. ## Chemistry

I am trying to determine which protein (in a given list) will stick most tightly to a cation exchange column at pH 7. I am unsure how to go about solving this.. We are given molecular weight, isoelectic point, and number of subunits for each protein. Where

211. ## Calculus

If f(x)=[(6x^3)-3]/x^4 a)find f' (x) b) find f'(4)

212. ## algebra

How do go about solving a equation symbolically 3x+7 + 3x7 =-8 4. 5. 5

213. ## Differential Equations

For the following initial value problem: dy/dt=1/((y+1)(t-2)) a)Find a formula for the solution. b) State the domain of definition of the solution. c) Describe what happens to the solution as it approaches the limit of its domain of definition. Why can't

214. ## math

What is equivalent to 11/22

215. ## Analytic Geometry

What is the equation of the circle touching the lines x-3y-11=0 and 3x-y-9=0 having its center on the line x+2y+19=0

216. ## MATH

Identify the solution(s) of the system of equations, if any. x=1 y=1 a) no solutions b) (0,0) c) (1,1) d) infinitely many solutions

217. ## math

Explain how you can use multiplication to find the perimeter of a square

218. ## chemistry

If 145 J of heat energy is applied to 34.47 g of an unknown metal, the temperature increases from 61.0 degree C to 78.5 degrees C. What is the specific heat capacity of the unknown metal?

Solve the system xy = 1, x + y =a by using the identity (x - y/2)^2 = (x + y/2)^2 - xy

220. ## English

1. I go to the ballet class once a week. 2. I go to ballet class once a week. (Is #2 grammatcal? What is the difference between #1 and #2?)

221. ## edu

a teacher can be affectionate and still regard a child with objectivity,which is not possible for a parent. According to Katz this ____ is what distinguishes between mothering and teaching. a. scope of responsibility b. ambivalent attachment c. intensity

222. ## Math

A string is 12in. long which makes a rectangle area of 5sq.inch can you make a shape that has a greater area with the string, if so what's the shape and area.

223. ## Government

What does a city seeking aid often have to do to be eligible for Federal Government grants and loans ? A. It must prove it is not in debt. B. It must provide a master plan for future growth. C. It must choose new city leadership. D. It must become a

224. ## Math

This is math qustn plz help me to solve it bcz tmrw my test soreply soon as soon A box measures 60cm*52cm*40cm.find the area of the cardboards required to make 280 such boxes.

225. ## Chemistry

How many moles of P4O10 can be produced with 8.084e-001 moles of the limiting reagent?

226. ## discrete

we have 20 kinds of presents. we want to give 12 children presents but each child doesn't need to get one. No child can get 2 copies of the same present. in how many ways can we give presents? please explain! the answer is (2^20)^12 but i don't see why

227. ## math

add mixed numbers in lowest terms 3 3/5 + 1 1/2= what in lowest terms

228. ## science

how much water can dissolve in 700ml of water at 50 c?

229. ## social studies

Where could I find an article about gun control?

230. ## Math 8R - HELP!

2x + 3y = 6 4x + 6y = 12 please help (I DO NOT want to discuss the other problem...)

231. ## algebra

For given the following piecewise function find the domain and range F(x) ={ 2x + 4 for x< -3} {-1 for -3-¡Ü x ¡Ü4} {- x 1 for x > 4}

245. ## biology

property of muscle in which the strength of its contraction can vary from weak to strong

246. ## Math

Ted swimming in the middle lane of a pool he races to his father 3 lanes away( in the end lane) , how many lanes does the pool have?

247. ## Physics

A communcations satellite of mass 200kg is in circular orbit of radis 4x10^4 km measured from the center of the earth. What is the gravitational force on the satellite and what fraction is this of its weight on the surface of the earth?

248. ## Math

This is math qustn plz help me to solve it bcz tmrw my test soreply soon as soon A box measures 60cm*52cm*40cm.find the area of the cardboards required to make 280 such boxes.

Thanks Ms.Sue

250. ## Lang Arts

9. Which one of these doors _____ the most promising? seem seems 10. _____ there hazards to look out for? Isn't Aren't

251. ## science

Where can I find an article about the flu virus?

252. ## algebra 1a

12 + y -------- 36 + w

253. ## English 8R - help!

Have anyone watch "Forrest Gump"? (please answer this question...I need help with something)

254. ## Chem 111

Why would NaOH solution need to be added when preparing the K2CrO4 stock solution

With increased market globalization,intercultural competence A. becomes less of a challenge. B. is aided significantly by advanced technologies such as faxes, overnight delivery, and e-mail. C. reduces the chances of interacting with people who speak

256. ## Visual Basic

what does IntTemp and IntRem mean? and whats wrong with my code, i don't know whats wrong with it... Code below: Dim intNum As Integer 'the numderator is read as a whole number. Dim intDenom As Integer 'the denominator is read as a whole number. Dim

257. ## Geometry-yes or no

10/4=18/x would you cross multiply then divide to solve this proportion?

258. ## algebra

Solve the system of equations by first expressing it in matrix form as and then evaluating. a). 3x-2y=5 4x-y =-10 b). 3x -2y =-2 4x -y = 3

259. ## Math

From least to greatest would it be 1/8 1/6 1/4 1/2?

use a table and play money to solve the problems. item prices: postcard($1.13), keychain($3.87), park ranger patch($5.33) and stuffed animal($8.79). Jamie spent $5.00 on postcard and key chain, Darla sepent$9.20 on park ranger patch and key chain and

261. ## science

property of muscle in which the strength of its contraction can vary from weak to strong

262. ## Education/Technology

A teacher in 1975 would have used what technology to create handouts for his or her students? A) Ditto duplicator. B) Laser printer. C) Copy machine. D) Scan converter. I want to say C but would like a second opinion.

263. ## MATH

Identify the solution(s) of the system of equations, if any. 3x-2y=6 5x=5-25y a) (28/13, 3/13) b) (-3/17, 32/17) c) (32/17, -3/17) d) (32/9, 7/3)

264. ## MATH

Identify the solution(s) of the system of equations, if any. a) (1, 0.5) b) (0, 5.1) c) (5,5.5) d) (5/11, -2/11)

265. ## math

What is equivalent to 11/22

266. ## biology

nerve fiber control over muscle or gland effector activity

267. ## Science 8R - HW Qs. Check (#2)

How long does it take the earth to revolve around the sun? my answer - 365 days right????

268. ## Analytic Geometry

Find the equation of the circle, with radius 1, tangent to the line 3x+4y=5 and having its center on the line x+2y=0

269. ## Biomedical Ethics

Can there be individuals who deserve moral consideration even though they have no moral responsibilities? This question is confusing to me for some reason.

270. ## organic chem

i. imgur. com/J6VpPrc. png what is the mechanism (electron pushing) of this reaction?

271. ## English

In classifying this sentence. We (SP) returned (v) to (p) camp (adv) early (adj) today (op). (declarative)Is this correct? or is it to (p) camp (op) early (adj?

Who is the primary audience for a company that cans and markets pet food? A. suppliers of the food product b. vetenarians and hospitals c. pet owners d. cats and dogs I say C

273. ## math

Write a number story for the expression, and solve it. 3 ÷ 1/4 = Please help me.

274. ## calculus

f(x) = (3x^3+5x^2+8x-8)/x find the derivative

275. ## Maths

What is the present value of a 6 month Certificate at a simple interest rate at 14% compounded monthly?

276. ## math

the largest value of n for which 10^n evenly divides 2^9*15^2*35 is a)2 b)3 c)4 d)5 e)6

6.9kg/m3

278. ## Social Studies

Where can I find a National News Article?

279. ## maths

a sphere wall is 20mm thick, inside diameter is 10M. What is the mass of steel if the density is 7850Kgm3?

4.2%of8,343

2(n+3}

282. ## Math

7/12 + 7/12 please explain how to do this problem.

283. ## math8

20-(12-x)=38 and 5(3c-c)+3=43

284. ## science

a playe rthrows ball from a height of 1.5 m above ground above ground with intiial velocity of 20 m/s at an angle of 60. the time req. tp hit the walll and at what height

285. ## science

Earthquake energy travels through rock as?

286. ## science

nerve fiber control over muscle or gland effector activity

287. ## Maths

How can we find the antilogarithm of 9.485?