# Questions Asked onMarch 8, 2009

1. ## Another Chem Problem

Calculate the total number of F (Fluorine) atoms in 12.15 mol C2HBrClF3. The answer is 2.195 x 10^25 atoms, but I am not sure how they got there. Can anyone give me a hint how to get started? If needed (i'm not sure), the moleculatr mass of C2HBrClF3 is

2. ## college math

Prove: 3/ a(2a^2 + 7)

3. ## Chem

Determine the number of moles of N atoms in 43.5 g of Mg(NO3)2. Textbook answer: 1.43 mol N My answer: 43.5 g Mg(NO3)x x (1 mol Mg(NO3)2/148.313 g Mg(NO3)2) x (2 mol N/1 mol Mg(NO3)2) = .293 Can tell me where i went wrong?

4. ## Physics

A child on a toboggan slides down a hill with an acceleration of magnitude 1.5 m/s^2. If friction is negligible, what is the angle between the hill and the horizontal? --- I don't even know how to get started on this question. Well, I first drew the free

5. ## investment question

scott and laura have both invested some money. Scott invested \$3,000 more then laura and at a 2% higher interest rate. If scott received \$800 annual interest and laura received \$400, how much did scott invest?

6. ## Chemistry

Calculate the total number of atoms in 0.00102 mol CH3(CH2)4CH2OH The answer in the back of my book says 1.29 x 10^22 but i do not understand how they got to that answer. Will someone please show me how they would set up the problem. I though all you had

7. ## chemistry help

Determine the number of moles of each specified atom or ion in the given samples of the following compunds.( Hint: the formula tells you how many atoms or ions are in each molecule of formula unit.) a. O atom in 3.161x10^21 molecules of CO2 b. C atom in

8. ## Statistics

Need help with these questions: I have already answered 27 out of the 30 accept these last three: 8. Given the significance level 0.01, the F-value for the degrees of freedom, d.f. = (7,3) is. A) 8.45 B) 27.67 C) 5.89 D) 14.62 9. One-way ANOVA is performed

9. ## biology

There is a beaker with 0.4% sucrose solution and the solute potential is -4. Inside the beaker, there is a dialysis bag with 01% sucrose solution, solute potential -1 and pressure potential 0. When the beaker is open to the atmosphere, what is the pressure

10. ## chemistry

Oxygen gas reacts with powdered aluminum according to the following reaction: 4Al(s)+3O2(g) yields 2Al2O3(s) What volume of gas (in L), measured at 770 mmHg and 35 degrees C, is required to completely react with 53.9g of Al?

11. ## chemistry

What [I-] should be maintained in KI(aq) to produce a solubility of 1.4×10−5 mol PbI2/L when PbI2 is added? Ksp of PbI2 = 7.1 x 10^-9 PbI2 Pb + 2I i: - (1.4x10^-5) 2(1.4x10^-5) c: - +x " I solved for x. Ksp = [Pb][I]^2 (7.1x10^-9) = (1.4x10^-5 +

12. ## math

how to convert a fraction to a decimal? 3 - 5 1/50

13. ## Algebra

I have an assignment due tonight and I believe I have solved it all correctly until I come to part d of the question. "For what value is this equation undefined?" How do I determine this? The Environment Environmental and wildlife preservation ensures

14. ## distance

some bank robbers leave town traveling at 70 mph. Ten minutes later, the police are chasing them at 78mph. How long will it take the police to overtake the robbers. show work if possibly thank you

16. ## chem

a soln. that is .195 M in CH3NH2 and .105 M in CH3NH3Br what is the balanced equation for this ? How do you know ?

17. ## PreCalculus

A kite has a lifting surface area of 630 square meters. Suppose the wind is blowing against the kite with a force of 100 newtons at an angle of 20 degrees above the horizontal. How much force is lifting the kite? I tried to draw a diagram, but I don't

18. ## math

E=hf-w w=? The answers are: -E/hf E+hf hf-E

19. ## chemistry

The Ka values of maleic acid, HOOCCHCHCOOH, are shown below. Ka1 1.5 10-2 Ka2 2.6 10-7 A 50.0 mL sample of 0.11 M of maleic acid is titrated with 0.14 M NaOH. Calculate the pH at the following points in the titration curve. find the first and second eq

20. ## Chemistry

I just need someone to show me how these problems are done then i can do them myself The Ka values of H2CO3 are shown below. Ka1 4.6 10-7 Ka2 4.4 10-11 What is the pH of a 0.15 M solution of Na2CO3? that one i tried to write out all the equations witht

21. ## algebra 1

The owner of the Fancy Food Shoppe wants to mix cashews selling at \$8.00/kg and pecans selling at \$7.00/kg. How many kg of each kind of nut should be mixed to get 8 kg worth \$7.25/kg?

what is the probability of not throwing 7 or doubles for 6 consecutives throws with a pair of dice? help please?!?!!

23. ## ****Science****

how do lithospheric plates lead to evolution and species?

24. ## English

topic suggestions? Informative topics? persuasive topics? entertainment topics?

lavre has sixty-one coins, all of whichare dimes and quaters. if the total value of the coins is \$9.85, how many of each kind of coins has she?

26. ## Chemistry

When 23.3 mL of 0.14 M HCl are added to 50.0 mL of a 0.16 M solution of a weak monoprotic base, the pH of the solution is 10.50. What is the Kb of the weak base? do u find moles of both and then add the moles for HB+ and then just use the B- moles for the

27. ## civics

1)What are the current flaws in the Electoral College system? 2) What changes would you make in the system? 3)Would you make these changes? Why? How? 1)There are several flaws in the Electoral College system. Among these, is the Winner Take All system.

chair is to table as stool is to... hurry is to run as stroll is to... corner is to walls as ______ is to bones top is to roof as bottom is to _____ Snow is to white as sea is to _______ cocoon is to butterflies as seed is to _______. Chair is to sit as

29. ## Check

13. Giganeers faces competition from many other companies that also provide engineering consulting services. In order to gain more business, Gig has tried to convince potential clients that his company offers better service than the competition. He has

30. ## how do i set up this problem?

A cruise boat travels 48 miles downstream in 3 hours and returns upstream in 6 hours. Find the rate of the stream

31. ## science

A ball is traveling at a constant velocity of 50 m/s and has been traveling for over 2 minutes. What is the ball’s acceleration

32. ## HISTORY!! help plz and thannks

what are protective tariffs and the factory system? I want to know what a factory system si because the question is Why was the factory system beneficial to Canadians. help plz and thank u!

33. ## college algebra

a garden hose can fill a pool in 3 days and a longer one can bill the pool in 2 days. How long will it take to fill the pool if both hoses are used.

34. ## math

how to convert a fraction to a decimal

35. ## science

describe the purpose of dna

36. ## math

A coin is tossed. If a head appears, a spinner that can land on any of the numbers from 1 to 5 is spun. If a tail appears, the coin is tossed a second time instead of spinning the spinner. What are the possible outcomes? A.

37. ## distance problem

Suiz drove home at 60mph, but her brother jim, who left at the same time, could only drive at 48mph. when suzie arrived, jim still had 60 miles to go. how far did suzie drive? Please show work

38. ## college

LIST 5 TYPE OF CHEMICAL EXPLOSIONS

39. ## lang.

avalanches mainly occur in B.C and Alberta than in mountainous regions in Eastern Canada or the North because..??? yes um i would really like to know why!! please help me!! thanks.

A coin is tossed. If a head appears, a spinner that can land on any of the numbers from 1 to 5 is spun. If a tail appears, the coin is tossed a second time instead of spinning the spinner. What are the possible outcomes? A.

In writing a advertisement for a job(mine is senior system analyst) What items should I list that must be included in the advertisement for legal purposes? am so lost here

42. ## English Defn

Does work work refer to the type of paid employment? Yes or no?

if you need my job descripiton i wrote I canpost that for you if it helps you to help me.

44. ## science

can you u tell me about the iron and suplhur and with the pictures information?

45. ## Civics

Who gave the longest filibuster in the U.S Senate? How long was the filibuster? What year was it and what was the filibuster about?

46. ## psychology (social studies)

I'm suppost to find a site with a really ugly photo of Taylor Lautner. This is my hardest assignment yet!!

47. ## math

F=Gm^2/r^2 G=? My answer is Fm^2/r^2. Is this right?

48. ## Chemistry

A 50.0 mL sample of 0.51 M benzoic acid, C6H5COOH, a weak monoprotic acid, is titrated with 0.40 M NaOH. Calculate the pH at the equivalence point. Ka of C6H5COOH = 6.5 10-5. what am i supposed to do with this?

49. ## Science

How is it possible to have an instrument like a bugle that has a fixed-air column play a melody?

50. ## Religion

Is it called purgatory when you're in between life and heaven/hell? Thanks.

51. ## civics

how does a bill become a law thanx :)

I'm writing a research report on the very first stagecoaches. The information that I cannot find is: Who invented it who has improved it over the years how and where was it originally used If not used today, why is it not used, and what replaced it? Thank

53. ## Math pizzazz worksheet answers

Where willcampers sleep in 20 years?

54. ## Physics 30

Would the answer to this question be total energy and momentum for both one dimensional and two dimensional collisions: State the quantities conserved in one dimensional and two dimensional collisions.

55. ## physics

why is the total distance traveled by a mass traveling in a circle of radius R during n revolutions =2piRn. The average speed is the distance traveled divided by the elapsed time, so: v=2piRn/delta T, where delta T is the elapsed time.

56. ## Math

Solve for the value of x. x to the power of -2/3=9/4

57. ## organic chemistry

Explain why Grignard reagent cannot be prepared from an organic halide that contains a hydroxyl (-OH), a carboxyl (-COOH), a thiol (-SH), or an amino (-NH2 or -NH) group.

59. ## ***CHEMISTRY***

Two pans of water are on different burners of the same stove. One pan of water is boiling vigorously while the other is boiling gently. Compare the temperature of the water in the two pans. (Are the temperatures the same, different, how?) ****PLEASE HELP!!

60. ## Math

E=hf-w w=? My answer was E/hf but I think this is wrong.

61. ## physics

equation is: n1sino1=n2sino2 (o means theta) ______________________________ Given info: So n1=1.5 n2=1.0 o1(incident angle)=20 solve for o2 Can you check this: n1sin20=n2sino2 1.5x0342=1sino2 .513=sino2 inverse sin(.513) o2=30.86 degrees is this right?

62. ## Math

Express as a single logarithm. log(subsript)5ã175-log(subscript)5ã7

63. ## Caring for School-Age Children

When properly executed, the behavior management strategy known as time-out becomes A.a positive reinforcer B.more effective than logical consequences C.a conversation betwen child and adult D. suitable punishment for misbehavior I chose the letter A. Can

64. ## Math

If the graph of y=log(subscript)ax passes through the point (8,3/2) then determine the value of a. Please Help!

65. ## physics

why is the total distance traveled by a mass traveling in a circle of radius R during n revolutions =2piRn. The average speed is the distance traveled divided by the elapsed time, so: v=2piRn/delta T, where delta T is the elapsed time.

66. ## math % problem

At birth a baby weighed 8 pounds 4 ounces. Two days later the baby weighted 7 pounds 12 ounces. What percent of it's weight had it lost? (show me the steps please)

68. ## Chemistry

I think I get ionic compounds now. I'm just a bit unsure about my answers for these ones. 4. The cation is Au^3+ and the anion was SiO3subscript^-2. For the compound, I wrote (Au subscript2)subscript SiOsubscript3. Is this correct? Would it be called Gold

69. ## Organic Chemistry

Some biphenyl ( C6H5----C6C5) is produced as a by-product in the synthesis of benzoic acid . Where does this come from?

70. ## English

What does this mean?: Why it is sometimes important to break the confidence of a friend?

71. ## Math

Express as a single logarithm. 1/2log(subscript)3 144-log(subscript)3 4+2log(subscript)3 3 Please Help!I just can't seem to get the correct answer when I do it.

72. ## Trivia

Unscramble these 5 letters to form a St. Patrick's Day term? FETSA

73. ## chemistry

If calcium oxide is added to sea water a number of changes occur. first calcium oxide reacts with water to form calcium hydroxide. What is the equations

74. ## college math

Prove: there exists x and y for c=ax+by iff gcd(a,b)/c.

75. ## English

Can you tell me if this sentence is correct? Great ethics determine individuals' views on accepting certain standards.

76. ## math

F=Gm^2/r^2 G=? The answers are: Fr^2/m^2 sqrt(F)m/r sqrt(F)r/m

77. ## Chemistry

How would you write out the names of NaOH, since the oxygen is before the hydrogen? I'm accustomed to writing the oxygen last.

78. ## english

Is this sentence correct? Living up to these expectations could be difficult and society not accepting those cloned children could be a challenge. Should it be these or those

79. ## HUM 130

HOW ARE MOHAMMED AND jESUS'S MESSAGES BEING CARRIED OUT TODAY?

80. ## French Cuisine (URGENT)

Okay, I need to find 5 foods (dishes/meals) from after the French Revolution. And 1 recipe. Also, I need to find 2 foods that are popular now that is influenced by the French Revolution. And 1 recipe. I've searched through google many times. But haven't

81. ## 8th Algebra

1) An airplane took 2 hours to fly 600 km against a head wind. The return trip with the wind took 1 2/3 hours. Find the speed of the plane in still air.

82. ## Us History

What is the period in american history from 1901-1914 called?

83. ## chemistry

Aluminum is burned in O2 to give Al2O3. 74g of aluminum are mixed and reacted with 56g O2. What mass of aluminum oxide is produced? #gAl2O3 = 56gO2 x ??

84. ## Social Studies

Canadas geography is noteworthy because the country has what?

85. ## need help math

Solve the problem. Roberto invested some money at 7%, and then invested \$2000 more than twice this amount at 11%. His total annual income from the two investments was \$3990. How much was invested at 11%?

86. ## algebra question

Marty leaves the airport in his private plane and flies due east at 186 mph. Two hours later, a jet leaves the same airport and flies due east at 434 mph. When will the jet overtake Marty's plane?

87. ## ALGEBRA 1

The square of an integer is 30 more than the integer. Find the integer. Is there some sort of equation to use to solve this? And how can the square of an interger actually be 30 more than the integer? I am confused!

88. ## chemistry

Starting with equal concentrations of all solutes, predict the direction in which the following reaction will proceed. H3PO4(aq) + HCO3-(aq) ¨ H2PO4-(aq) + H2CO3(aq) a. left b. right c. no net reaction

89. ## chemistry

Determine the number of moles of each specified atom or ion in the given samples of the following compounds.( Hint: the formula tells you how many atoms or ions are in each molecule of formula unit.) a. O atom in 3.161x10^21 molecules of CO2 b. C atom in

90. ## chemistry

If the volume of solute is 6 ml and the volume of the solution is 300 ml, what is the solute's percent by volume? is it solute/solution so % = 6/300 so then would it be % = .02 would i change it to 2%???

91. ## Sose

Hi there i am stuck with question on my sose assignment the qustion is what is the differance between a tidle wave and a tsnarmi? Hpoefully you can help ffrom Rory p.s im in grade 8

92. ## English

I need some help with verb tense. I get a little confused on which tense to use if I write in present and past. Help please! Thanks much!

93. ## college-Finance

any help? thank you Diazstar corporation sells on terms of 2/10, n/30. 70% of costumers normally avail of the discounts. annual sales are \$900,000. 80% of which is made on credit. Cost is approximately 75% of sales. required: 1. average balance in accounts

94. ## geometry

You are reducing a map of dimensions 2 ft by 3 ft to fit to a piece of paper 8 in. by 10 in. What are the dimensions of the largest possible map that can fit on the page?

95. ## college finance

hey...last one please..please...the accelerating colection..please... Doria's Corporation makes sales of \$2,160,000 per annum. The average age of accounts recievable is 30 days. Management considers shortening credit terms by 10 days. Cost of money is 18%

96. ## science

what is "ice age"?

97. ## Physics

I did a lab in which we were to find the 1st resonance and 2nd resonance and from them we found wavelength which in turn helped us find speed of sound. We used tuning forks and the frequancy was given. We besically moved a plastic tube which was in water

98. ## Chemistry

How can Ag2Cro4 have a four on the O? Ag has a charge of two, so multiplying it by 2 would give me two, but multiplying Cr, with a charge of two (one of its few choices) by four would give me eight. How does that balance? Thank you so muh for checking on

99. ## algebra

12f-15+3+16f=-2f-12+20

100. ## Social Studies

Why did colonists want a written constitution?

101. ## Science

I am in 4th grade and I picked the red cabbage indicator as part of my science project. I have all the information but I don't know how to set it up on my board. Please give my an idea how to start to. My hypothesis is what common household items are

102. ## Chemistry

The name of one of the compounds given on my worksheet is Molybdenum V. But according to my periodic table, there is no MOlybdenum with a charge of 5. How could this be right? Thanks for looking into this!!

103. ## Chem

I went through the periodic table several times, and I could not find oxalate!!! Where is it? Thank you.

104. ## chemistry

bromination of propylbenzene gives 1-bromopropylbenzene instead of 2-bromopropylbenzene or 3-bromopropylbenzene upon reaction with N-bromosuccinimide in precence of benzoyl peroxide as a radical initiator

105. ## history

How did Fort Repose adapt to the changes after The day?

106. ## history

We has to read a book called alas babylon and we has to write an essay about how did fort repose adapt to the changes after the day. and I ran into two examples in the book that i didn't quite comprehend It says people unconsciously were inclined to split

107. ## social studies

whats the us governments role as regulator and who do they protect?

The Kansas City Star on February 16, 2007 reported on the lowering prices of natural gas. With lower natural gas prices and unseasonably warm weather early this winter the forecast is that gas-heating customers will pay \$950 as compared to \$1,339 last

109. ## Larry & French Revolution

This is a book your library might have but you can read it online:

110. ## college algebra

Sally took four tests in science class. On each successive test, her score improved by 3 points. If her mean score was 69.5%, what did she score on the first test?

111. ## college math

Abby Kaminsky sold her ski house at Attitash Mountain in New Hampshire for \$261,000. This sale represented a loss of 13% off the original price. What was the original price Abby paid for the ski house? (Round your answer to the nearest dollar. Omit the "\$"

112. ## Science

How do I do a simple particle diagram to show how ear defenders work???

113. ## spanish

Que usas papa jugar al beisbol?

114. ## work and time

If 15 men or 24 women or 36 boys can do a piece of work in 12 days, working 8 hours a day, how many men must be associated with 12 women and 6 boys to do another piece of work 9/4 times as great in 30 days working 6 hours a day?

115. ## Eng. Quick?

Quick Question? What would be the abbreviation for therapeutic and reproductive.

116. ## college algebra

previous question, can hannah xx please explain how she got the answer to that question

117. ## algebra

Solve the problem. Helen Weller invested \$15,000 in an account that pays 12% simple interest. How much additional money must be invested in an account that pays 15% simple interest so that the total interest is equal to the interest on the two investments

118. ## college algebra

x^2+8x complete the square to make the binomial a perfect trinomial

119. ## Visual Basics... Multiple Choice..

What does the statement the statement '' create? What is the scope of a variable declared static in a function? a. visible in the script but not in a function b. Once declared visible globally c. Only visible within the function d. Only visible in the

120. ## Math

What are the rules of rotation for specific degrees for both counterclockwise and clockwise?

121. ## Math

A coustomer wants to make a teepee in his back yead for his kids. He plans on using PVC plumbing pipe for the supports on the teepee, and he wants the teepee to be 12 feet across and 8 feet tall. Howlong should the PVC plumbing pipe be?

122. ## algebra

Marty leaves the airport in his private plane and flies due east at 186 mph. Two hours later, a jet leaves the same airport and flies due east at 434 mph. When will the jet overtake Marty's plane?

123. ## algebra time and distance

Karin biked at 13 mph for a time but got a flat tire. She then walked at 5 mph. She traveled a total of 93 miles. Had she biked the whole time, she would have gone 117 miles. How many hours did she walk?

124. ## algebra

Solve the problem. Anne and Nancy use a metal alloy that is 24.9% copper to make jewelry. How many ounces of a 20% alloy must be mixed with a 27% alloy to form 100 ounces of the desired alloy?

125. ## english

I'm putting the finishing touches on my final draft of my essay. In my conclusion we have to restate are thesis in different words. My thesis in my introduction was Therapeutic cloning is better than reproductive cloning because of the great ethics,

126. ## algebra interest word problem

Solve the problem. Roberto invested some money at 7%, and then invested \$2000 more than twice this amount at 11%. His total annual income from the two investments was \$3990. How much was invested at 11%?

127. ## Math

Which of the following are examples of multiplicative inverses? 1) csc x and sin x 2) tan x and cot x 3) cos^-1 and cos x 4) ln x and e^x A. All of these B. 1 and 2 C. 1,2, and 3 D. 3 and 4 I know it's not all of them...but I'm leaning toward B. Help

Solve the problem. Anne and Nancy use a metal alloy that is 24.9% copper to make jewelry. How many ounces of a 20% alloy must be mixed with a 27% alloy to form 100 ounces of the desired alloy?

We're doing a lab report on the hardness of water, and one of the calculations is "The EDTA reacts with the hard water ions in a 1:1 mole ratio. Calculate the molarity of the ions present in 20 mL of water tested." How would you do this?

130. ## ****CHEMISTRY****

Can you see the particles in a coloid, suspension, and solution? Can any of those be filtered?

131. ## phsics

what is pumped into walls for insulation? help please :(

132. ## Physics

Is this statement correct: When part of sound travelled through water, wavelength and speed of sound would change because since the particles are closer together in water than in air, the speed of sound would increase which in turn would decrease the

133. ## college

Suppose we could arrange a debate between John Locke and Jean Jacques Rousseau on the nature--nurture controversy. Summarize the argument that each historical figure is likely to present. Be thorough, specific and succinct

134. ## college algebra

writing equation in quadratic form then solve 36/b-17=-24/b+1

135. ## Physics

Why does frequancy stay the same when going through different mediums?

136. ## Mathematics

My teacher gave us this equation, and I can't remember how to use it. It's for Simple and Compound Interest. Future Value=d[((1+i)^n-1)/i] d=deposit each time period i=rate per time period n=number of time periods

137. ## algebra 1

the square of an interger is 30 more than the integer. Find the integer.

138. ## Science Bio

Hi there, I have a quick question which I'm really stumped on. 1. When combined with Lugol's solution (iodine), does glucose and sucrose contain starch? I think glucose has starch but not sucrose. Is this right?

139. ## RE

please could someone help me . i need to write an essay about baptism in a catholic church , C of E church an Anglican church, for adults and children. the different processes and what happens during the baptism. thankyou !

140. ## english

I have to write a contrast compare essay on dr kings i had a dream speech and old majors speech from animal farm. i need help

15. Identify and describe the 4 basic rights that form the foundation of capitalism

142. ## Chemistry

The Ka values of H3PO4 are shown below. Ka1 7.5 10-3 Ka2 6.2 10-8 Ka3 4.8 10-13 What is the pH of a 0.19 M solution of NaH2PO4?

143. ## math

dividing moniomials. 2 to the 2nd/2to the -3

144. ## math

John O'Sullivan has just completed his first year in business. His records show that he spent the following in advertising: Newspaper \$500 Radio \$800 Yellow Pages \$875 Local flyers \$650 What percent of John's advertising was spent on the Yellow Pages?

145. ## complex numbers

find the values of x and y x+5i=y+yi

146. ## crt 205

Final Project: Comprehensive Argument Analysis

147. ## World History 201

4.After conquering the Kingdom of Judah, Cyrus the Great ordered the destruction of the temple in Jerusalem? False 5. All Persians kings were believed to be gods? True 6. According to Confucius, human society primarly consisted of unequal relationships?

148. ## US HISTORY.

Why did farmers express discontent during 1870-1900 and what impact did their new attitudes and actions have on national politics?

149. ## ***CHEM QUESTIONS***

1. will molten sodium chloride (NaCl) cunduct electric current? Why? 2. Why does adding detergent to water make it spread out into thin sheets. (Use a name and explanation) 3. Define capillary action 4. Which has a greater vapor pressure: CCl4 (carbon

150. ## world history 201

will someone double check these true/false questions for me, and if you see any you believe to be wrong, let me know. thanks. 1 In the Andean civilization, the devasting effects of El Nino resulted in a reduction in the supply of occean fish? True 2. Norte

151. ## World 201

8. Confucius taught that filial piety had to do with the care and provision parents religiously gave to their children? False 9. Daoism is the belief that all people should reject social harmony and work to maintain a good and strong government? False 10.

152. ## PHYSICS

How is it possible to have an instrument like a bugle that has a fixed-air column play a melody?

153. ## math

lavere has sixty-one coins, all of which are dimes and quaters. if the total value of the coins is \$9.85, how many of each kind of coins has she?

154. ## English

1. Jane and Mike are the same in score. Jane and Mike are the same in a score. Jane and Mike are the same in the score. (For example, Jane got 90 points. Mike also got 90 points.) Which expression is correct? 2. How does the baby look? It looks sleepy. (Is

155. ## Bio

Why is HIV so successful in infecting human?

156. ## algebra

What percent is 32600000000 of 58200000000?