15. geometry

The ratio of the areas of two similar trapezoids is 1:9. What is the ratio of the lengths of their altitudes?

16. math

what is the formula used to find the area of a composite figure

17. Chemistry

bond angles and polarity for trans-PF3Cl2

18. chemistry

the following reaction is endothermic; 3O2(g) = 2O3(g) If this reation is at equilibrium will it shift to the right or left if we: 1) add some oxygen

19. physics

A 63-kg ice-skater glides with a speed of 10 m/s toward a 14-kg sled at rest on the ice. The ice-skater reaches the sled and holds on to it. The ice-skater and the sled then continue sliding in the same direction in which the ice-skater was originally

20. chemistry

Concentrated nitric acid is 16M. What volume of nitric acid must be diluted with distilled water to prepare 5L of 0.1M nitric acid?

21. CALCULUS

Postal regulations specify that a package sent by priority mail may have a combined length and girth of no more than 129 in. Find the dimensions of a cylindrical package with the greatest volume that may be sent by priority mail. Hint: The length plus the

22. physics

Four identical metallic objects carry the following charges: +7.8 µC, +4.2 µC, -2.2 µC, and -4.4 µC. The objects are brought simultaneously into contact, so that each touches the others. Then they are separated.

23. physics

A hunk of cast concrete with a weight of 10 N will float if it displaces 10 N of water true or false

24. chemistry

A 1.00-g sample of piperazine hexahydrate is dissolved in enough water to produce 100.0 mL of solution and is titrated with 0.500 M HCl. What is the initial of the solution, before any titrant is added? Piperazine,HN(C4H8)NH, is a diprotic weak base used

25. Math

Postal regulations specify that a parcel sent by priority mail may have a combined length and girth of no more than 144 in. Find the dimensions of a rectangular package that has a square cross section and largest volume that may be sent by priority mail.

26. Physics

A mass m at the end of a spring vibrates with a frequency of 0.92 Hz. When an additional 600 g mass is added to m, the frequency is 0.64 Hz. What is the value of m?

27. Physics

15 beats are heard in 5 seconds when a piano key and a tuning fork of slightly higher frequency (440 Hz) are struck at the same time. What is the frequency of the sound emitted by the piano key?

28. Math

The owner of the Rancho Grande has 3028 yd of fencing with which to enclose a rectangular piece of grazing land situated along the straight portion of a river. If fencing is not required along the river, what are the dimensions of the largest area he can

29. chemistry

The OH- concentration of 0.050 M ammonia, NH3, is 9.5x10^-4. Write the equilibrium equation for its ionization and the equilibrium constant expression; solve for the value of K.

30. math

round to the nearest tenth 17.32

31. chem

which is the correct balanced equation for a given titration process, (a) or (b)? a) 6H+ + 2MnO4- + 3H2O2 -> 4O2 + 2Mn2+ + 6H2O b) 6H+ + 2MnO4- + 5H2O2 -> 5O2 + 2Mn2+ + 8H2O Process: Make a solution in a 100mL volumetric flask using 1g of NaBO3*4H2O, 20mL

32. algebra

The circle below is centered at the point (3, 2) and has a radius of length 7. What is its equation?

33. Math

Your body consists of 7/10 water. Is more than 1/2 your body water? Explain

34. Math

The owner of the Rancho Grande has 3028 yd of fencing with which to enclose a rectangular piece of grazing land situated along the straight portion of a river. If fencing is not required along the river, what are the dimensions of the largest area he can

35. math

What is the volume of a cylinder with radius 8km and height 7km?

36. physics

an insulated circular ring of diameter 6.50cm carries a 12.0 A current and is tangent to a very long, straight insulated wire carrying 10.0 A of current. find the magnitude and direction of the magnetic field at the center of the ring due to this

37. geometry

chords RS and QT are parallel. If arc QR is equal to 45 degrees, what is the measure of arc ST?

38. algebra

Can someone please help write a proof for the following. given: JKLM is a square prove: MK is perpendicular to LJ the figure in front of me is a square labeled JKLM and there are diagonals JL and KM

39. trig

I have to retype this. For which angles theta, with 0 degrees less than/equal to theta less than/equal to 180 degrees, is sin 3theta = (equal) -1 (negative 1)? a) 30 and 150 degrees b) 60 and 120 degrees c) 90 degrees d) 0 and 120 degrees How do I set this

40. Algebra

How do I go about Converting 8/9 to a decimal fraction. Round to the nearest thousandth.

41. English

Homework Help Forum: English Posted by rfvv on Tuesday, March 29, 2011 at 11:13pm. e.g. Can you repeat what he said? 1. Can you repeat the thing which he said? (what =relative pronoun) 2. Can you repeat___? + What did he say? (what=interrogative pronoun)

42. math

girls are 1 half of the 5 grade class two tenths of these girls have red hair.red haired girls are what fraction of the 5 rade

43. bio chemistry

1.)prepare 500mM 100 ML HCL (37% purity, density 1.8) 2.) prepare 0.5N 100 mL HCL(37% purity, density 1.8)

44. chemistry

More dilute sodium hydroxide solutions are often prepared from a sastuated sodium hydroxide soltuion that's is 52.0% by mass and has a density of 1.48 g/mL. Calculate the volume, in liters, of this solution needed to prepare 35.0 L if 0.125 M sodium

45. Chemistry

Using a table how would you know what elements were oxidized, reduced, or neither? 2Al + Fe2O3 = 2Fe + Al2O3

86. math

what percent of students have a major other than math, history, english or science. math=200 history=300 english = 400 science=150 other= 200

87. Trig

What is the exact value of sin^-1(sin(8pi/15)?

Which of the following is NOT an example of parallel structure? a. Yoga can help you develop flexibility, reduce stress, and increase relaxation. b. Learn how to analyze business audience, improve your style, and edit thoroughly. c. You are all encouraged

89. math

Raymond has exactly 360 square inches of cardboard to make a box. He wants two of the dimensions to be 6 inches and the other one to be a whole number of inches. How many different size boxes can he make?

90. algebra

Can someone please help wright a proof for the following. given: JKLM is a square prove: MK is perpendicular to LJ the figure in front of me is a square labeled JKLM and there are diagonals JL and KM

91. English

1.) Should there be a comma before "is" in the following sentence below? She gave birth to her first child by her uncle at age 14 in 1990 is showing a sign of being raped. 2.) The psychologist help Alesha to break through her issues by using

92. Math

melissa invested a some of money at 3% annual simple inter she invested 3 times that some at 5 % annual simple interest if her total yearly interest from both investments was 7200 how much was invested at 3% ?

round each number to the underlined digit the number is 3,922,703 the underlined digit is in the millions place

94. Frankenstein

How does shelly keep mystery and terror along with supernatural elements in chapters 8-10

95. COLLEGE

wRITE A FORMULA FOR THE FUNCTION m THAT COMPUTES THE NUMBER OF YARDS IN x FEET

96. english

which latin word means to join? JUNCT-? CRE-? LEG-? OR MON-?

97. Anatomical Terminology

I often here my prof use the word proper as in "mucous glands proper". What does the word proper mean?

98. math

How do I convert 19.9% into a fraction?

99. evaluate expression

ricky wrote the following to show that his sisters age is 6years less than 3times his age. Explain what he did wrong . Give the correct expression. Let (a)stand for my age ,my sisters age: a/3-6

100. Math I'm so confused

Find the absolute maximum and absolute minimum values, if any, of the function. (If an answer does not exist, enter DNE.) f(x) = x2 − x − 5 on [0, 5] Come someone please show me how to do these problems? I'm lost

101. Math Absolutely no idea

Find the absolute maximum value and the absolute minimum value, if any, of the function. g(x)=(1/16)x^2-16sqrtx on [0,36]

102. Chemestry

How many moles of sodium chloride are produced when 25 grams of sodium reacts with chlorine gas?

103. College Algebra

Charlie can grade exams in 2 hours. It takes Mark 6 hours to grade the same exams. If they work together, how long will it take for them to grade the exams?

use an inverse trig function to write theta as a function of x (There is a right triangle drawn. The hypotenuse is 2. Theta is the angle between the base and the hypotenuse. The base/adjacent side of theta is labeled(x + 1) The side opposite theta does not

105. Calculus

"The production amount, Q, of an item manufactured by a company is modeled by the CobbDouglas function Q = 200(K^0.6)(L^0.4)(T^0.3) where K is the quantity of capital investment, L is the quantity of labor used, and T is the investment in training. Capital

106. geometry

elbert wants to plant grass seed in his backyard. His yard is shaped like a rectangle that is 6 meers by 7 meters. He plans to use a cup of seed for every square in his yard. How many cups of grass seed will he need?

107. Statistics

Given that the mean is 40 and the standard deviation is 1.5: A) what is the probability of selecting a value between 39 and 46 B)what value will allow only 15% of the data to be greater than it

108. Chemistry

On the basis of the solubility curve for KNO3 what type of substance would you expect KNO3 to be?

109. geometry

Serena has a square-shaped garden. She wants to put a fence around the outside of the garden. One side of the garden is 8 feet long. How many feet of fence will she need?

110. math

A quaterlateral with only one pare of parallel sides would be Trapezoid am I correct. Thanks for all your help

111. algebra

how do i factor 4xx-36?

112. math

help please!!!!!! explain how you would find the length of one side of a square if the area is 36 square units.

113. math

(3xsquared-7x-6)+(2xsquared-4x+1) simplify

114. Pos/110 american government

Can someone help please??? 1. Assignment: American Government Concepts • Resources: Chapter 1 of the text lists several key concepts in American government. Among these are government, politics, policymaking system, public policy, democracy, majority

115. GEOMETRY

Show how to construct a triangle given the length of one side, the size of an adjacent angle and the length of the median from that angle

116. math

Sean's truck has a 12-gallon gas tank. He just put 3 gallons of gas into the tank. Is this equivalent to a third of a tank? if not, what amount of gas is equivalent to a third of a tank?

117. English

Can you please check these sentences for me? It's really urgent. 1) At eighteen you can get married without your parents' permission. At eighten years of age/When you are eighteen ... (are they both correct?) 2) You can't get married without your parents'

118. Organic Chemistry

What are the names of the aldol condensation products of acetone + 4-methylbenzaldehyde and acetone + 4-methoxybenzaldehyde?

119. science

what will happen to a can of coke if it was left in a car on a hot summer day?

120. Communications

Explain the impact and use of jealousy in interpersonal relationships.

121. stc

interpret the poem the lady in the pink mustang

122. world history

Explain why/how the United States became the world's superpower after WW2. Explain why the United States was better suited for being a global leader.

123. Psychology

Which item below is most strongly related to cognition and thinking? a) classical conditioning b)behavior modification c) operant conditioning d)obeservational learning

124. Chemistry

how to prepare 100 mL of exactly 5.00% (w/w) aqueous hydrogen solution? If given that initial it is 50.0% (w/w) and has density of 1.18 g mL^-1

125. Physics

Will a cyclist coast farther if the lamp connected to his generator is turned off? Explain.

126. math

if you the cosine of a angle can you determine the measure of the angle

127. english

what is the meaning of the quote"Lord protect me from my friends i can take care of my enemies"

128. math

Find the absolute maximum value and the absolute minimum value, if any, of the function. g(x) = -x(^2) + 2 x + 9

129. Acid/Base Chem

Determine the volume (in mL) of 1.18 M perchloric acid (HClO4) that must be added to 747 mL of 0.976 M sodium hydrogen citrate (Na2C6H6O7) to yield a pH of 4.77.

130. Human Resources Management

Sekect two aspects of a performance appraisal from the list below. Explain what each aspect is. State the effects on employees and employers if the aspects were not addressed. Strategic Relevance Criterion deficiency Criterion contamination Reliability

If two numbers are relatively prime, what is their LCM? Explain your reasoning and give 2 examples supporting your answer.

132. Equivalent art

What is the the 3 equivalent fractions of 10/24

133. Math

When you join Sally's Video Club, there is no rental charge for the first 2 tapes. Each tape then costs $2 to rent, but you can borrow one tape free as a bonus after renting 10 tapes. How many tapes would you be able to rent for$50?

134. Math

What does vertices mean?

135. acc

2,000,000 shares of capital stocks at $3 par value were issued the company issued half of the stock for cash at$8 per share, and earnded $90,000 during the first three months of operation , and declared a cash dividend of$15,000 what would be the total

136. macroeconomics

a description of a specific macroeconomic phenomenon or event and how it has impacted you

137. Statistics

The scores on the Webster test are approximately normal with u=100 and o=15. The proportion of adults with scores between 90 and 110 is closest to??

138. Chemistry

A student titrates HCl with 0.0125M KOH. Starting with 50.00 ml of the acid it takes 40.0 ml of base to reach equilavence point. A. What is the concentration of the HCl? B. What is the initial pH of the acid solution? C. What is the pH of the reaction

139. math

12x^4 _______ 42x

140. English

Unscramble these letters bikfatcrgos to make three words

141. Maths

What is 5y=9+2y

142. math

Mrs Nelson has a rectangular flower box that is 5 feet long and 2 feet tall. She wants the width of the box to be no more than 5 feet. If the width is a whole number, what are the possible volumes for the flower box?

143. chemistry

How many grams of copper will be required to replace silver from 200 mL of 3.00M solution of silver nitrate AgNO3?

144. math algebra

wanted to know if I got the correct answer? question (2a10b2)(3a2b2) answer 6a^12+5a^12b^4+b^4

145. science

which is the correct balanced equation for a given titration process, (a) or (b)? a) 6H+ + 2MnO4- + 3H2O2 -> 4O2 + 2Mn2+ + 6H2O b) 6H+ + 2MnO4- + 5H2O2 -> 5O2 + 2Mn2+ + 8H2O Process: Make a solution in a 100mL volumetric flask using 1g of NaBO3*4H2O, 20mL

146. Discrete Mathematics

How many elementary operations are used in the following algorithm? Step 1 Set S = a, k = 0 , and t = a Step 2 while k < n (a) Replace t with t+d (b) Replace S with S+t (c) Replace k with k+1 endwhile Step 2 Print S ------------------------ My answer was:

147. Math

how do you solve: m=a+b/2

ted is an airline attendant and must wear a uniform to work.he has 3 shirts,4 slacks,and 2 ties from which to choose.how many outfits are possible with these choices?

149. english

the verb in this sentence is:After a pronlonged delay due to technical difficulties,the program resumed

150. English

I forgot to include the following list of words. Can you just tell me if they are used and if I should include other (more fashionable) clothes? 1) FOOTWEAR: Walking boots, boots, sandals, shoes, slippers, court shoes (AmE pumps), flip flops, slippers,

Can you please give a example so that I can understand it better. 1)How can you tell whether a polynomial is written in factor form. 2)Construct a trinomial whose greatest common factor is 2x^2. 3)Describe the different methods that can be used to find the

152. SS

KOHLER, TOLMAN, AND BANDURA ARE IMPORTANT FIGURES ASSOCIATED WITH?

hi im trying to do a problem that involves multiple battereis, one capacitor,and multiple resistors, and im told that the circuit has been connected for a very long time... i found the current passing through each battery using kirchoffs rules, but now i

154. geometry

If a quadrilateral has 4 congruent sides and congruent diagonals. Could it immediately be concluded to be a square?justify the answer. If not was is a counterexample

155. Math

Hi! I'm working on a math assignment and I was wondering if someone could check my math on this. PLZ! Create a model of Tank B. Find the approximate capacity Assuming that the overflow pipe is 100cm below the top of the tank, therefore the revised overflow

156. chemistry

How would you make 250 ml of a .51M calcium hydroxide solution?

157. algebra

when will train b catch up with train b if train a is traveling 60 mph and passes station at 1:25pm While train b is traveling 80 mph and passes staion at 1:40pm?

158. english

Whats the subject of the following sentence: The sergeant and captain agrees on the strategy to catch the criminal.

159. poetry

What is the author, Andrei Codrescu, trying to saying in "A Leafy Angel?"

160. trig

secx=5 use a graph to solve the following equation in the interval x is greater than -pie but less than pie

161. physics

How much voltage is there in a circuit with a resistance of 12 ohms and a current of 3 amps

is 80 sq feet the size of a kitchen or is it 8 sq ft

The denominator of a fraction is 4 more than the numerator. If both the denominator and the numerator are increased by 1, the resulting fraction equals ½. What is the original fraction?

164. Math

we are working on a puzzle similar to a magic square. 9 boxes are arranged in an X with the center box being shared by both diagonals. the goal is to use each integer 1-9 one time so that each diagonal sums to 26 and the 4 corners sum to 26. HELP

165. science

we have a project. there are different kind of topics. mine is protecting our water. i had to find 10 questions answer. i couldn't find 2. they are: 1. why is water important to protect? 2. what are some negative and positive affect of protecting our

166. chemistry

whatmass of (NH4)3SO4 is required to prepare 500cm3 of m/4 solution

167. maths

Hi Please can you help? Find the particular solution of the differential equation from dy/dx=2/27(x-3)ã(x^2-6x+23) / (y) (y>0. for which y = 2 when x = 1, and then give this particular solution in explicit form? thank you in advance for any help regards

168. MATH

A JUMPROPE IS MEASURED BY GRAMS OR KILOGRAMS

169. chemistry

How much 5 M NaOH can be made with 50 gram of NaOH? please show me your steps

170. MATH

A DICTIONARY,CUBE AND A GEOBOARD IS MEASURED BY GRAMS OR KILOGRAMS

171. Introductory Physics

I am really nervous about mathematics, so I just want to make sure I am doing these problems correctly. I figure if I am getting the incorrect answer, I must be doing them incorrectly and need to work on them some more. I THINK I have them correct, but I

172. Earth Science

Compare the general temperature and direction of flow of the current that flows off the east coast of the United States with the temperature and direction of flow of the current that flows off the west coast of the United States.

Sorry I'm posting again. I need to find the obesity rates of the countries Romania, Russia, and Rwanda by gender. (for example ___ percent of Russian women are overweight; _____ percent of Russian men are overweight). I can't find any websites! D: Anny

174. strayer

For this Discussion, read the following scenario, and then address the following question in 1–2 paragraphs: For the month of August, 12 new cases of tuberculosis and 12 new cases of West Nile virus infection were reported to a county health department.

175. Math

Evaluate the identity (cos^2x-sin^2x)/(1-tan^2x)=cosx^2X

176. math

set out in tens and ones 32 + 10 = 43 + 54 = 28 + 61 = 15 + 73 =

177. calculus 2

integrate x^5/(x^2 + sqrt(2)) using a table of integrals

225. chem

what degree celcius is read when pressure is 100mmHg?

226. physics

how does a cardboard boat float?

227. Science

A (blank) compound is one that burns regularly

228. english

what are some human rights

229. Social Studies, English

I need to find the obesity rates of the countries Romania, Russia, and Rwanda by gender. (for example ___ percent of Russian women are overweight; _____ percent of Russian men are overweight). I can't find any websites! D: Anny help would be appreciated.

230. English (Syllogisms)

Syllogisms-Which are valid? Correct the invalid ones. Brain Surgeons save lives. Marie is a brain surgeon. Therefore, Marie saves lives. An English Bulldog is a dog. All dogs have four legs. Therefore, English Bulldogs have four legs. All humans grow. All

231. Math

A carpet cleaner can be rented for a fee of $55 plus$5 per hour. If you rent the carpet cleaner for 3/4 of a full 8- hour workday, how much money will you be charged?

232. UOP

HOW HAS HUMANS AFFECTED THE ANTARCTIC FOOD WEB I am a tax preparer and got swamped, now My paper is so late. Help, this is case we have to analyze. 700-to-900 word analysis of the case at bottom and these questions in the analysis: o Identify any

233. math

For which angles beta, with 0 degrees less than/equal to beta less than/equal to 180 degrees, is sin 3beta equal to -1? a) 30 degress and 150 degrees b) 60 and 120 degrees c) 90 degrees d) 0 and 120 degrees I think it is C because sin of (3 x 90 = 270) 270

234. math

what is 24\11 times 21\2

235. Literature julius Caesar

What are 3 purposes for shakespeare showing us scene 3. Consider antonys speech, what is likely to occur in the rest of the play, and the role of language in politics. any good ideas? thanks

236. Vancouver

Are there monuments in Vancouver? Would these be considered as monuments? The Stanley Park Granville Island Robson Street

237. math

what square number is less than 64 but greater than 36? write a multilication sentence to solve.

238. physics

It takes 15 seconds for a wave to pass a buoy 25 meters from shore. If its wavelength is 30 meters, what is its speed.

239. math

8x+16÷x^(2)-1 . x+1÷4x+8

240. math

Which is bigger 98in. or 5yd.

241. math

help !! the area of a rectangle is 56 square inches. the width of the rectangle is 7 in. what is the length??

242. Com/155

Explain why using pronouns may help make your writing more effective?

After combing through the research on twin studies, one could conclude that

244. physics

hi im trying to do a problem that involves multiple battereis, one capacitor,and multiple resistors, and im told that the circuit has been connected for a very long time... i found the current passing through each battery using kirchoffs rules, but now i

245. Physics

How do you show that the kinetic energy is equal to the atoms rest energy when its velocity equals .886 times the speed of light? Thanks in advanced!

246. English

Can you please check these few sentences, please? Thank you. I'm not sure about the paraphrasis of a Will Smith's song. 1) The members of Sinn Fein protested (I need a synonym) about the discrimination against Catholics. 2) Heavy bomber raids continued on