# Questions Asked onNovember 4, 2014

1. ## chemistry

We only can make ozone layer by adding 3 oxygen atoms or we cannot

2. ## Calculus

Let f(x) = 2x^{3}+9. Find the open intervals on which f is increasing (decreasing). Then determine the x-coordinates of all relative maxima (minima). 1. f is increasing on the intervals: 2. f is decreasing on the intervals: 3. The relative maxima of f

3. ## English

A nurse attended (a)...... her work place in time.(b)....... all her sincerity she was attending (c)....... the patient but she knew that her effort (d)........ keeping the patient alive might end (e)........ smoke.The doctors of board were shocked

4. ## Science

How many grams of H2SO4 are in 125 mL of a 3.00 M solution of H2SO4?

5. ## mathematics

8y+4z=7 6y-8z=41

6. ## Physics

what are vector quantities?

7. ## Science

what is the concentration (M) of a MgCl2 solution prepared by dissolving 7.2 g of MgCl2 in sufficient water to give 362 mL of solution?

8. ## soc120

Which of the following is a claim that utilitarian might use to argue that prayer should not be allowed in school? (Points : 1)

9. ## Science

How many grams of CH3SH must be added to water to prepare 410mL of a solution that is 2.5 M CH3SH?

10. ## English

Change the sentences as directed in brackets: 1.Proper emphasis should be given on their study.(active voice) 2.The fox was very thirsty and was looking for water.(exclamatory sentence) 3.It could not find any source of water.(negative sentence) 4.It

11. ## organic chemistry laboratory

hi, im not sure if all my answers are correct especially number 5. could any one check and tell me? please and thank you. 1. Why is it important to have clean test tubes before running a test? Before which tests should acetone not be used to clean the test

12. ## English

A nurse attended (a)...... her work place in time.(b)....... all her sincerity she was attending (c)....... the patient but she knew that her effort (d)........ keeping the patient alive might end (e)........ smoke.The doctors of board were shocked

13. ## science

Using the systematic method and information in the Appendices F and J (note that log value is given in Appendix J), determine [SCN-], [Hg2+], and [HgSCN+] at equilibrium when Hg(SCN)2(s) is dissolved in water.

14. ## English

1. You will soon be friends with him. 2. You will soon make friends with him. -------------- Are both grammatical? Is there any difference between them?

15. ## English

1. Some cells change chemical energy into electric energy. 2. Some cells change chemical energy into electrical energy. ----------------- Do we have to use electric or electrical?

16. ## Calculus

1. On what interval is the function f(x)=x^3-4x^2+5x concave upward? 2. For what values of x dies the graph of f(x)=2x^3-3x^2-6x+87 have a horizontal tangent? Is there no solution because the equation can't be factored? 3. At what point on the curve

17. ## algebra

Classes A and B have 35 students each. If seven girls shift from class A to class B, then the number of girls in the classes would interchange. If four girls shift from class B to class A, then the number of girls in class A would be twice the original

18. ## chemistry

The pH difference across the membrane of a glass electrode is 2.49. How much voltage is generated by the pH gradient at: 25C? 37C?

19. ## Calculus

Given f(2)=5, f'(2)=-1 find the value of d/dx[1/sqrt(f(2x))] when x=1

20. ## geometry

a rectangular piece of land measures 0.7 km by 0.5km each side is to be fenced with 4rows of wires.What is the length of wire needed?

21. ## Math

1. If one wishes to accumulate a 30,000-fund in 5 years, how much should he deposit now at 18% compounded quarterly? 2. If a bank offers a rate of 4.5% compounded semiannually, how much should you deposit to accumulate 50,000 in 15 years 3. Suppose that a

22. ## Algebra HELP!

On a ruler that measures both metric and English units, we see that 1 m = 39.37 in. This implies that 2 m = 78.74 in. Use this information to write an equation to convert x inches to y meters.

23. ## riga technical university

At what concentration of silver electrolyte the potential of the silver elevtrode will be greater than 0.1V of the silver electrode standard potential?

24. ## physics

a50g ball is hit to roll by a force of 100N.it rolls over 20m.what was its initial speed

25. ## English

1. Everyone wants to be in good health. 2. Everyone wants to be very healthy. --------------------- Does #1 mean #2? What other expressions can we use instead of Sentence 1?

26. ## algebra

Classes A and B have 35 students each. If seven girls shift from class A to class B, then the number of girls in the classes would interchange. If four girls shift from class B to class A, then the number of girls in class A would be twice the original

27. ## English

happy123 at hmail dot com --------------- How do you read this? happy one two three at h mail dot com (is this right?)

28. ## English

But they are not the only helper animals. There are also guide horses. ------------------ In the second sentence, what is the meaning of 'guide'?

30. ## computer literacy

____________ is an application program included with Windows that allows the contents of the computer, the hierarchy of folders on the computer, and the files and folders in each folder to be viewed.

31. ## physics

Calculate the PRP, PRF, PD, DF, SPL, wavelength, period, and Axial Resolution if a 2 cycle pulse emitted from a 10 MHz transducer if the echo time received was 0.26 ms in soft tissue.

Gina's art teacher mixes 9 pints of yellow paint with 6 pints of blue paint to create green paint. Gina mixes 4 pints of yellow paint with 3 pints of blue paint. Did Gina use the same ratio of yellow paint to blue paint instructed by her teacher? Explain.

36. ## English

I have to make one sentence using catch, caught and had caught.... Is this correct Dad caught the perch, and he will try to catch a walleye like James had caught.

37. ## math

Nitya and satya have some marbles with them. Nitya says to Satya, "If you give one marble to me, we will have equal number of marbles." Satya says to Nitya," If you give me one marble, I will have twice the number of marbles you have". How many marbles

38. ## maths

one card is taken from the bag write down all the possible outcomrs of the event

39. ## Math Help

The New York Times study of homes reported average house size in 2001 to be 2,428 square feet, compared with an average of 2,150 square feet in 1987. Suppose a study of homes over the years recorded the year from 1987 to the present, as well as the size of

40. ## math

the shadow of a pole measured from the foot of the pole is 2.8 m long if the distance form the tip of the shadow from the tip of the pole is 10.5 m then find the length of the pole.

41. ## Algebra

Given the functions f(x)=x+5/3 and g(x)=1/f^-1(x)+1, find the value of g(3). The first step would first be to find the inverse of x+1, the denominator of the fraction. I think the inverse would be 1-x. And now we have 1/1-x so we can just plu in 3. Right?

111. ## math

Explain how you can be sure that all rates you have written on a double number line are correct.

112. ## working with parents and families

The responsibility for a parent to become involved in a center's activities  A. lies primarily with the parent. B. can't be assigned to either the parent or the caregiver. C. lies primarily with the caregiver. D. is shared by the parent and the child.

113. ## English

1. Our lives would be different without energy. 2. Our lives would be different if we didn't have energy. 3. Our lives would be different if there were no energy. ---------------------------- Does #1 mean #2 and #3? Are they the same in meaning and

114. ## Chemistry

Information: Original temp of HCl: 23.3C of NaOH: 23.8C Final temp of the mixture: 36.7C I am to find qH2O (assume 50 mL of solution and use average density of 1.02 g/mL) but I'm a bit lost. I also need to find /\H and /\H per mole of H+a and OH- ions

115. ## physics

A particle undergoes three successive displacement in a plane as follows 4m southwest, 5m east, 6m in a direction 60 degree north of east (a) draw an apropraite vector diagram to represcent the displacement (b) detarmine the displacement that would be

116. ## Math

There are nine oak trees in a park. The oak trees make up 45% of all the trees in the park. How many trees are in the park?

117. ## RIGHT TRIANGLE TRIG

a kite is being flown 150 yards of string. the kite has an angle of elevation with the ground 65 degrees. how high above the ground is the kite. I DON'T KNOW HOW TO SET UP THE PROBLEM

118. ## MGMT

How might a manager use leading by example to help develop ethical behavior in his or her unit?

119. ## math

Sandy measures the length of a hockey stick. she says it it 4 units long. what unit did she use? A. cubes B. inches C. feet D. yards

120. ## Math

There are 20 students in Mark's homeroom class. Ten percent of the students in Mark's home room class are in art class. How many students are in art class?

121. ## Algebra 2

A path of uniform width surrounds a rectangular garden that is 5m wide and 12m long. The area of the path is 168m^2. Find the width of the path.

122. ## data analysis w/spreadsh w/lab

Please explain what the outcome of "" means

123. ## English

I think I am brain tired, LOL! In the following sentence. The boy's baseball glove needed more padding. I know The boy's baseball are all adjectives. Do they all modify glove?

124. ## chem

Fe + O2--->Fe2O3 How many grams of iron are required to convert 80 mL of oxygen at STP?

125. ## chem

Calculate the total pressure in the flask after all of the oxygen has been removed from the air in the flask. Assume that the temperature is 25¡ÆC, the initial barometric pressure is 760 torr and that air is 21% oxygen by volume.

126. ## Chemistry pretty urgent!!!!!!!

Chemical bonding question! The partial Lewis structure that follows (Figure 1) is for a hydrocarbon molecule. In the full Lewis structure, each carbon atom satisfies the octet rule, and there are no unshared electron pairs in the molecule. The

127. ## physics

Find the height of a cliff if the 87.6 kg cliff diver hits the water at 15.5 m/s.

128. ## working with parents and families

The caregiver uses a _______ for anticipating and dealing with the concerns of parents when they've enrolled or are enrolling a child in the caregiver's program.  A. parent conference B. parent handbook C. parent discussion group D. newsletter  The

129. ## working with parents and families

The tone of the parent-caregiver relationship is set by the A. home visit. B. initial facility visit. C. brief chats at arrival and departure times each day. D. child's first day.  C is the wrong answer I think the answer is B

130. ## physics-distance

Here's a stationary bike. If you pedal such that the front wheel rotates at 6.9 rad/s, and that wheel's radius is half a meter, how far would you have gone in 35 minutes, if the bike where a non-stationary bike? (Assume a constant speed of rotation) I am

131. ## Urgent Science Question!

A 921kg sports car is moving rightward with a speed of 29.0m/s. The driver suddenly slams on the brakes, causing a 8347N resistive net force and the car skids to a stop. Determine the time it takes to stop the car.

132. ## Physics

A ball of mass 0.60 kg is fired with velocity 100 m/s into the barrel of a spring gun of mass 2.4 kg initially at rest on a frictionless surface. The ball sticks in the barrel at the point of maximum compression of the spring. No energy is lost to

133. ## physics

A 1100- kg car collides with a 1500- kg car that was initially at rest at the origin of an x-y coordinate system. After the collision, the lighter car moves at 20.0 km/h in a direction of 35 o with respect to the positive x axis. The heavier car moves at

134. ## Science (How Do I Do This?)

A car skids to a stop at a traffic light, leaving behind a 8.25m skid mark as it comes to a rest. Assuming that the car is travelling at 14.5m/s and only the friction from the tires on the roadway stop the vehicle. Find the coefficient of friction

135. ## math

integral of y^3/(y^4 +1) dy I don't get how you get (1/4) ln(y^4 +1) out of this. I thought you would do the quotient rule. but is that the same for integrals as it is the derivatice? help!

136. ## Chemistry

A 1.516 M solution is made by dissolving 1.570 g of the compound in 0.2238 mol of water. Determine the molar mass and apparent molecular formula of the compound.

137. ## MATH

I NEED HELP WITH A QUESTION MARK COUNTS HE HAS SAVED IN HIS JAR. WHAT IS THE TOTAL AMOUNT OF HIS SAVING

138. ## math

on a sunny day a 36 inch yard stick casts a 21 inch shadow how tall is the building whose shadow is 168 feet

139. ## chemistry

How many atoms of oxygen are there in 5.00g of copper(II) sulfate pentahydrate?

(-4/5)-6=-14

141. ## algebra 2

1. Part A.) For the f(x) = 5x + 8 and g(x) = x – 3. Calculate (f o g)(x) Part B.) f(x) = 3x + 5 and g(x) = x². Calculate (f o g)(-3)

143. ## Science Physics

How many Btu of heat must be added to 1200 lb of copper to raise its temperature from 100°F to 450°F -specific heat for copper is 0.092-

144. ## Physics

A wheel is rotating freely with an angular speed of 4840rad/s on a shaft whose moment of inertia is negligible. A second wheel, initially at rest and with 8 times the rotational inertia of the first is suddenly coupled to the same shaft. a) What is the

145. ## English

If he had not worked hard, he would never have become a success. Looking for dependent clauses To me these both song dependent that they both need the other. Am I wrong?

146. ## English

Does this count as an Emotional Words advertisement? Nike The Ultimate Quick Fix The Shoes Word If you do

147. ## Math!!

3.4t+19.36=-10.22

148. ## Calculus

Use Newton's method with the specified initial approximation x1 to find x3, the third approximation to the root of the given equation. (Round your answer to four decimal places.) 1/3x^3 + 1/2x^2 + 8 = 0, x1 = −3 I got -3.4808, but it's wrong. Help?

149. ## math

If there are 15 minivans out of 42 cars how many minivans are there in 150 cars

150. ## Science

Choose if this relationship is Predation, Competition, Commensalism, Mutualism, Parasitism, Producer/Consumer Relationship 1 : This bee is feeding on the nectar from this flower while at the same time collecting polent o transfer to different flower. What

151. ## Science

Zoysia is a type of grass. It uses lighjt energy to make food. Grasshoppers feed upon zoysia for energy. What type of relationshipe xists between zoysia and grasshoppers? Is it Mutualism? Mutualism is when both organisms benefit

152. ## Science

Choose if this relationship is Predation, Competition, Commensalism, Mutualism, Parasitism, Producer/Consumer This tomato hornworm is covered with cocoons depositied by wasps. The alrvae of the waspa will feed on the worm and eventually cause its death.

153. ## Science

Choose if this relationship is Predation, Competition, Commensalism, Mutualism, Parasitism, Producer/Consumer The egret is a bird that follows herds of cattle in order to catch and eats infects that are stirred up as the cattle move around. What type of

154. ## Chemistry

What is the pH of a solution prepared by mixing 25.00 mL of 0.10 M CH3CO2H with 25.00 mL of 0.010 M CH3CO2Na? Assume the volumes of the solution are additive and that Ka = 1.8 x 10-5 for CH3CO2H. 4. How is this solved?

155. ## (math) step function

Draw a graph for the function f(x)=2*⌈x⌉ With the domain -2

156. ## Mathematics

Functions f.and.g are.define.by F : x 9+x G : x 3x-2

157. ## Math

Brett and Jim sign up for Memorial Day race in their town. There are two different events, a 5 kilometers and a 10 kilometers. Brett signed for 5 kilometers and Jim signed for 10 kilometers. Use thermometers to indicate when both Brett and Jim have

177. ## math

1.-5+9 2.9(-2) 3.40/-20

178. ## physics

Rocket-powered sleds are been used to test the responses of humans to acceleration. Start- ing from rest, one sled can reach a speed of 510 m/s in 2.37 s and can be brought to a stop again in 3.15 s. Find the acceleration of the sled while ac- celerating.

179. ## Physics

A vector is directed at an angle tangent above the +x axis, pointing into the first quadrant. If the x component of this vector is 10 m, the magnitude of the vector is?

180. ## Math

1/3 multiply 300

181. ## calc 3

1. Evaluate the given integral by making an appropriate change of variables, where R is the region in the first quadrant bounded by the ellipse 36x^2+25y^2=1. L= double integral R (4sin(144x^2+100y^2) dA. 2. Use the given transformation to evaluate the

182. ## Social Studies

What are some problems that may come when the National Dream Act is passed.

183. ## English

If it rains we shall postpone the picnic. If it rains is a dependent clause we shall postpone the picnic is independent. I say to put comma between rains and we, Correct?

a company shows profits of $78020 the company wants to divide one quarter of the profits evenly among 47 emplpoyees how much money will each employee receive? how do I divide$78020 by one quarter?

185. ## English

A prepositional phrases include A. A preposition as about or above. B.an object of the preposition that is a noun or pronoun. C. any modifiers of the object of the preposition. d. I am think A

186. ## English

All of the following are true special predicates except. A. A compound predicate is one that is passive. B. A predicate can have direct or indirect object. C.When a predicate is passive ,the subject is being acted upon rather an acting. D. A predicate may

187. ## Precalculus

e^2x-1=e^4 using one to one property?

188. ## Algebra

Find the real zeros of f and the x-intercepts of the graph of f. (Enter your answers as a comma-separated list. Separate multiple ordered pairs with commas.) f(x) = −x2 + 6x + 16

Wendell is making punch for a party. The recipe he using says 4 cups pineapple juice, 8 cups orange juice, and 12 cups lemon lime juice to make 18 servings. A. If he makes 108 cups of punch, how many cups of each ingredient will he use? 27 cups pineapple

206. ## math

How to find the area of a regular hexagon with a perimeter of 78 inches and a perpendicular distance of 11 inches from side to center

207. ## English

The hairy man represents what in the call of the wild? My answer is fear

208. ## English

Does a comma go after an independent clause with a subordinate conjunction followed by another independent clause? Example The classes will be held unless the schedule has been changed. I know one is needed if a dependent clause is first.

209. ## physics

During a neighborhood baseball game in a vacant lot, a particularly wild hit sends a 0.144-kg baseball crashing through the pane of a second-floor window in a nearby building. The ball strikes the glass at 14.9 m / s, shatters the glass as it passes

210. ## English

In the Call of the Wild, Buck did not fight back when Hal was beating, him because? My answer is that he did not have the strengh

John picked 30 bags of apples on monday and sold them at his fruit stand for \$3.45 each. The following week he picked and sold 6 more. How much money did John earn the 1 st week? 3.45x30=103.50 How much money did he earn in the second week? 3.45x36=124.20

8x1/4=

213. ## math

what is 5t+12f-t-3f=

214. ## Calculus

1. On what interval is the function f(x)=x^3-4x^2+5x concave upward? My answer: (4/3, infinity) ?????

215. ## chem 2

methylamine is a weak base. calculate the pH of a .025 M solution of methylamine.

216. ## Calculus

2. For what values of x dies the graph of f(x)=2x^3-3x^2-6x+87 have a horizontal tangent? My answer: (1.6,77.9) (-0.62, 89.1)

217. ## Math

Simplify the expressions. 1. 2x - 4 + 3x 2. 4y - 1 - 3y + 2 3. x + 2(x - 4

218. ## Calculus

Show that the curve y=6x^3+5x-3 has no tangent line with slope 4. The answer key says that m=y'=18x^2+5, but x^2 is greater than or equal to 0 for all x, so m is greater than or equal to 5 for all x. I don't understand that x^2 is greater than or equal to

219. ## Math

What is the divisor of 12/18 and 4/6

220. ## Chem 130

What is the percentage of water in copper (II) sulfate pentahydrate?

221. ## Chemistry

If 0.85 mol of a diatomic molecule has a mass of 23.8g, identify the molecule? We tried to multiply .85 mol and 23.8g and then multiply by 2 to get an answer, but I believe I might be heading in the wrong direction.

222. ## English

They insist that Bacon really wrote the play. I am saying this is a complete sentence with no dependent clause,. Am I right?

223. ## MACBETH HELP PLZZ!

what motivated the Gunpowder Plot of 1605

224. ## ENGLISH 10 HELP!!!

what motivated Shakespeare to write The Tragedy of Macbeth?

225. ## Calculus

Draw a diagram to show that there are two tangent lines to the parabola y=x^2 that pass through the point (0,-4). Find the coordinates of the points where these tangent lines intersect the parabola. So far I have taken the derivative and got y'=2x.. Using

226. ## Chemistry

A piece of copper of mass 21.3 g at 106.0 °C is placed in a vessel of negligible heat capacity but containing 53.0 g of water at 19.3 °C. Calculate the final temperature of the water. I keep getting 22 celsius and I'm not sure where I'm going wrong. I

227. ## Chemistry

A sample of light has a wavelength of 2.61 x 10^-12 m. What is it's frequency? A popular radio station broadcasts with a frequency of 94.7 mHz. What is the wave length of the broadcast? (1MHz = 1 x10^6 HZ) What is the wavelength of electromagnetic

228. ## Chem 130

How many tons of zinc can be obtained from 976 tons of zinc ore that is 78.0% zinc carbonate?

229. ## english

I have to find the verb and predicate nouns and predicate adjectives. 1.) Their uniforms are a symbol of their authority. Verb=are PN=symbol

230. ## Physics

An 8.00g bullet is fired at 220m/s into a 250g wooden block that is initially at rest. The bullet remains in the block and after the collision the two slide up a 30° incline. a. Solve for the velocity of the bullet-block after the collision. (ans:

231. ## algebra

The height in feet of a projectile with an initial velocity of 32 feet per second and an initial height of 240 feet is a function of time in seconds given by h(t) = −16t^2 + 32t + 240.

232. ## algebra

The height in feet of a projectile with an initial velocity of 32 feet per second and an initial height of 240 feet is a function of time in seconds given by h(t) = −16t^2 + 32t + 240. (a) Find the maximum height of the projectile. ______ ft (b) Find the

233. ## algera

The fuel efficiency for a certain midsize car is given by E(v) = −0.018v^2 + 1.440v + 3.9 where E(v)is the fuel efficiency in miles per gallon for a car traveling v miles per hour. (a) What speed will yield the maximum fuel efficiency? Round to the

234. ## algebra

The sum of the length l and the width w of a rectangular area is 220 meters. (a) Write w as a function of l. w = (b) Write the area A as a function of l. A = (c) Find the dimensions that produce the greatest area. l = w =

235. ## algebra

A veterinarian uses 300 feet of chain-link fencing to enclose a rectangular region and also to subdivide the region into two smaller rectangular regions by placing a fence parallel to one of the sides, (a) Write the width w as a function of the length l. w

Very confused with this question. Amy help would be appreciated. The ideal gas law states that P V = nRT where P is the pressure in atmospheres, V is the volume in litres, n is the number of moles, R = 0.082 L·atm/K·mol is the gas constant, and T is the

237. ## history

What cities are in between the European trade route? And what are the cities in between the African trade route?

238. ## Physics

A 4.9 kg block initially at rest is pulled to the right along a horizontal, frictionless surface by a constant, horizontal force of 14 N. Find the speed of the block after it has

239. ## geometry

given ab=ac be is the medan to ac cd is the median to ab conclusion ag is the perpendicular bisector of bc

240. ## PHYSICS

What magnitude is not possible when a vector of magnitude 3 is added to a vector of magnitude 4?