# Questions Asked onDecember 5, 2013

1. ## Chemistry

Which of the following will be more soluble in an acidic solution than in pure water? AgI, Ni(OH)2, KClO4, SrSO4, CaCO3

2. ## chemistry

The dosage of technetium-99m for a lung scan is 20 μCi/kg of body weight.How many millicuries should be given to a 65.0-kg patient? (1mCi=1000μCi)Suppose a person absorbed 54mrads of alpha radiation. What would be the dose equivalent in mrems?

3. ## Geometry

1. If ΔRST symbol ΔNPQ, then RT line is congruent to _____. (1 point) line NP line NQ line PQ line QP 2. Given RST NPQ, RT = 7x – 5, NQ = 5x + 11, find the length of RT and of NQ. (1 point) 8 51 40 56 3. Which of the following statements is true about

Please Help, And can you explain how you got the answer? 1. Write the ratio 15:25 as a fraction in simplest form. A) 3/5 B) 15/25 C) 30/50 D) 1/3 2.Which ratio is equivalent to 3/7? A) 6/10 B) 9/21 C) 12/35 D) 7/3

5. ## Statistics

True or False All probabilities can be expressed as decimal values ranging from 0 to 1.00.

6. ## Statistics

True or False The value for a probability can never be less than zero, unless you have made a computational error.

Juan Ramirez sells suits in a major department store on weekends. He earns a commission of 5 percent on the first ten suits, and if he sells more than ten, he earns an additional 3 percent on the additional suits. Last weekend Juan sold thirteen \$250.00

8. ## Statistics

True or False A jar contains 15 red marbles and 75 blue marbles. If you randomly select a marble from this jar, the probability of obtaining a red marble is p = 15/90.

9. ## Algebra

During a softball game, a batter hits a ball upward from an initial height of 3 feet. The height, in feet, of the softball is given by s(t)=−16t^2+70t+3 , where t is time in seconds and . Which is closest to the time when the softball will be 50 feet

10. ## Calculus

I'm a little confused with this integration problem: If the definite integral from 0 to 2 of (e^(x^2)) is first approximated by using two inscribed rectangles of equal width and then approximated by using the trapezoidal rule with n=2, the difference

11. ## Algebra 2

An archer releases an arrow from a shoulder height of 1.39 m. When the arrow hits the target 18 m away, it hits point A. When the target is removed, the arrow lands 45 m away. Find the maximum height of the arrow along its parabolic path. My points are

12. ## physics

In the figure, two skaters, each of mass 58.0 kg, approach each other along parallel paths separated by 2.79 m. They have opposite velocities of 1.50 m/s each. One skater carries one end of a long pole of negligible mass, and the other skater grabs the

13. ## Geometry

Imagine a piece of square paper that measures 20 by 20 cm. You can make a box (with no lid) by cutting a square of the same size from each corner and folding up what's left to make a box. Keeping the lengths of each sides integers, what is the maximum

14. ## math question grade 8!!

shelby wants to paint the walls and ceiling of a rectangular room. (height:2.6cm, width:4.8cm, length:6.8cm) type of paint size of paint can cost wall paint 4L \$24.95 1L \$7.99 ceiling paint 4L \$32.95 (one litre of paint covers 9.5 m) a) what is the least

15. ## physics, buoyance

A wood cube 0.20m on each side has a density of 730kg/m3 and floats levelly in water. Part A What is the distance from the top of the wood to the water surface? Part B What mass has to be placed on top of the wood so that its top is just at the water

16. ## math

In the addition problem at the bottom, the sum of the two digits represented by B and C is ?. Each time the same letter appears it represents the same digit) 2BA +C6D____ 8AD

17. ## Civics--HELP

Below are some of the powers of the legislative branch: Can impeach and remove the president, Creates lower federal courts, overrides presidential vetoes, and appropriates money. Which constitutional power of the legislative branch is missing from this

18. ## Science

A biologist is constructing a cladogram to show the evolutionary relationships between the animals shown below. If anatomical features are used to construct the cladogram, which animal will be placed farthest from the shown animal? Animal shown: connexus.

19. ## Statistics

True or False For any normal distribution, the proportion in the tail beyond z = 2.00 is p = 0.0228.

20. ## math words problem

Williamston Daily is a new daily newspaper. When they first started printing three years ago they had 5600 home delivery subscribers. The number of subscribers increases by 71 every month. Write a linear model that represents the number of subscribers, B,

21. ## Trig-Weird Geometry Problem

Determine all triangles ABC for which tan(A-B)+tan(B-C)+tan(C-A)=0. There's a hint: "Can you relate A-B to B-C and C-A?" Should I apply the tangent difference formula (tan(x-y))? Help would be appreciated, thanks.

22. ## english 4

Which of the following best describes the overall mood in Frost's poem?

23. ## Chem

A 0.170-mole quantity of NiCl2 is added to a liter of 1.20 M NH3 solution. What is the concentration of Ni2 ions at equilibrium? Assume the formation constant* of Ni(NH3)62 is 5.5 × 108.

24. ## Astronomy

Star Right Ascension Declination Aldebaran 4h 36m 16¢X 31' Miaplacidus 9h 13m -69¢X 42' Deneb 20h 41m 45¢X 20' Regulus 10h 08m 12¢X 18' Hadar 14h 04m -60¢X 24' 1.If Aldebaran is crossing your local meridian, how long would you need to wait to see

25. ## physics, buoyance

Water flows at a rate of 25L/min through a horizontal 8.0-cm-diameter pipe under a pressure of 5.7Pa . At one point, calcium deposits reduce the cross-sectional area of the pipe to 40cm2 . Part A What is the pressure at this point? (Consider the water to

26. ## statistic

an employment information service reports that the mean annual salary for full time male workers ages 25 to 34 with a bachelor's degree is \$48718. in a random sample of 12 full time males workers ages 25 to 34 with a bachelor's degree, the mean annual

27. ## English

how does hawthorne use irony to criticize puritan society

28. ## physics

An elevator, with a total mass of 454 kg, accelerates downward at 3.51 m/s2. During this time, the tension in the elevator cable is

the jones' are planning a vacation. the total cost is \$2500. they are able to save 1/5 of the cost each month. how much will they save in three months?

30. ## CHEM Help please Thanks

8) Explain exactly how you would perform the following laboratory instructions: -a) “Wash the organic layer with 5.0 mL of 1 M aqueous sodium bicarbonate.” -b) “Extract the aqueous layer three times with 2 mL portions of methylene chloride.” 10)

31. ## chemistry

Write a balanced nuclear equation for the positron emission of each of the following radioactive isotopes: silicon-26,mercury-188,7737Rb,9345Rh

32. ## Puzzle question sport

3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 1 1 1 1 1 1 1 1 1 1 1 1 0 Being a champion means a lot of hard work

33. ## Algebra 1

Two bullet trains leave the station at the same time traveling in opposite direction. The northbound train goes 125 mph and the southbound train goes 120 mph. After how long will they be 735 miles apart?

34. ## Chemistry Q1,3,5

1) What would be the preferred heating device (s) in each of the following situations? a) reflux a solvent with a 56 degree Celsius boiling point b) reflux a solvent with a 110 degree Celsius boiling point c) distillation of a substance that boils at 220

asked by Laila Plz help me out
35. ## Statistics

Given the following information, determine the 68.3 percent, 95.5 percent, and 99.7 percent confidence intervals. overbar above X equals 4.33 comma SE sub m equals 3 I've looked at the table as recommended. I just do not understand this at all. I'm really

asked by Anonymous Do not understand
36. ## Math >.<

Please check my answers! A(A box contains 2 yellow,3 red,2 blue,3 purple, and 4 pink marbles.Once a marble is selected, it is {{not}} replaced. Find each probability. 1.P(two purple marbles) my answer~ 1/91 2. P(two yellow marbles) my answer~ 2/4 or 1/7

37. ## American Government

The Supreme Court relies on support from A. It's enormous prestige. B. Democratic majorities in Congress C. The obedience of state courts D. Republican majorities in Cingress Is the answer C

38. ## Science

A biologist is constructing a cladogram to show the evolutionary relationships between the animals shown below. If anatomical features are used to construct the cladogram, which animal will be placed farthest from the shown animal? Animal shown: connexus.

39. ## SS

"In all humility, but with a firm conviction that Japan is a steward on whom (lies) the gigantic task of the uplifting of the Far East, I cannot think that the young Korea is yet capable of governing itself" -Nitobe Inazo, 1919 Which statement best

40. ## Math - Calculus I

Optimization Problem: Find the dimensions of the right circular cylinder of greatest volume inscribed in a right circular cone of radius 10" and height 24"

41. ## physics

A stone is thrown from a 45.1 m cliff with a speed of 5.71 m/s at an angle of 49.5 ¡ to the horizontal. (a) What maximum height above the release point does the stone reach?

42. ## poetry

What mood best describes "Elegy Written in a Country Churchyard"?

43. ## AP Chem - Science

For a cell of the CsCl type (figure 9.18), how is the length of one side of the cell,s, related to the sum of the radii of the ions, r subscript cation + r subscript anion? Figure 9.18 : i . imgur . com / zHj2SGW.png Another question : Consider the NaCl

44. ## history,geography,life science,maths or maths lit

can i be a social worker while am those subject

45. ## Algebra

How do I solve this algebra questions, 2n+4n+4=-8, 9=5+4t, at+2=12, 2x+3=7, 3b+6=12, m/6+5=7????

46. ## Lauren

Convert the following energy units. 905 kJ to J 2970 kcal to kJ 5.21 × 106 J to kcal

47. ## Government

What was the Court's reasoning in Marbury v. Madison?

48. ## algebra 2

There is a 10% chance it will rain on Saturday and a 30% chance it will rain on Sunday. What percent chance is there that it will rain on both Saturday and Sunday?

49. ## Pam

A 56.59 g sample of a substance is initially at 20.5 °C. After absorbing 1267 J of heat, the temperature of the substance is 116.5 °C. What is the specific heat (c) of the substance?

50. ## math

a number machine takes any number put into it, multiplies it by 3 and then subtracts 2. reuben put a number into the machine. he took the new number that came out and put that number back into the machine. He took the new number that came out and put that

51. ## math

In the addition problem at the bottom, the sum of the two digits represented by B and C is ?. Each time the same letter appears it represents the same digit.) help

52. ## Biology

In this assignment, you will select one of the options that you can compare a cell to and design an analogous development structure. then, you will compare the structure of your development to the organelles of the cell that you have learned about in this

53. ## Physics

A wood cube 0.20m on each side has a density of 730kg/m3 and floats levelly in water. What mass has to be placed on top of the wood so that its top is just at the water level?

54. ## math

Sam needs 15 dozen gingerbread cookies. he bakes 2 dozen the first day, 4 dozens the next day, 6 dozens the day after that and this pattern continues. How many days does it take Sam to get his 15 gingerbread cookies if half of each batch gets eaten each

55. ## LAW

1. In the recent past, law enforcement has had to concentrate their intelligence efforts against antigovernment militia groups on the following calendar date because the groups have used this date as a target date to conduct their violent acts. A. May 1 B.

57. ## Geometry

If x is the midpoint of line vy and wz And the prove is triangle vwx is congruent triangle yzx can you help me solve this using two column prove

58. ## chemistry

Hello ellie again. I am still having trouble understanding bombardment. The question I'm working on says Complete the bombardment reaction ? + 40-18Ar → 43-19K + 1-1H

59. ## LAW

1. An officer who makes application for a search warrant before a magistrate or judge must provide: A. a complete investigative report of the crime committed. B. probable cause from a sworn affiant. C. witnesses to appear before the magistrate or judge. D.

60. ## Government

Which is NOT a responsibility of the Department of Energy? A. To formulate national energy policy B. To research and develop nuclear and energy technology C. To regulate the distribution of electricity and natural gas =D. To oversee the construction of

61. ## physics

1. Assume that 10 g of steam is added to 100 g of water initially at 19°C. The water is inside an aluminum cup of mass 35 g. The cup is inside a perfectly insulating calorimetric container that prevents heat flow from the outside environment. Find the

62. ## physics

An ideal gas is initially at a temperature of 300 K. Its volume triples while its pressure decreases by a factor of two. What is its final temperature?

63. ## math 4 grade i don't know i need help

"Crazy John decided to pull a prank on his father and fill up his car with cotton balls making it seem like it was full of snow. He bought 48 packs of cotton balls for \$3.65 each. If he used his CVS card and received 30% off his entire purchase and had to

64. ## data management

In a simple card game, Player A wins a point if either a face card, a red prime number, or a black perfect square number is drawn from a standard deck. Otherwise, Player B wins a point. Assume aces do not count as 1s.

65. ## Abby

If you have 320.0 mL of water at 25.00 °C and add 140.0 mL of water at 95.00 °C, what is the final temperature of the mixture? Use 1.00 g/mL as the density of water.

66. ## data management

a die is thrown twice. what is the probability that the sum of the rolls is greater than 9 given that the first roll is a 4?

67. ## Chemistry

K+(aq) + Al3+(aq) + 2SO42-(aq) + 2H2O(l)→KAl (SO4)2 * 12H2O(s) Al is limiting and 1.007 g Find the theoretical yield and percent yield I think the answer is 17 and 40, respect. I just need help figuring it out

68. ## physics

Two objects moving with constant acceleration starting from rest are to cover the same distance. If the second is to cover that distance in ¼ of the time would need a: a quarter of the first’s acceleration. b: a half of the first’s acceleration. c:

69. ## Math work problem

If a disease is transmitted from 1 individual to 2 more each week, and we began with 2 individuals being ill, how many weeks until at least 30 people are infected? Need help figuring this out Thanks!

70. ## gov.

Which is NOT a responsibility of the Department of Housing and Urban Development? A. The coordination of federal housing programs =B. To provide support for community development C. To promote access to affordable housing D. To prosecute landlords who

71. ## Government

Which is NOT a responsibility of the Department of Health and Human Services? =A. To coordinate federal subsidized housing programs B. To oversee medical and social service research C. The supervision of Medicare D. The management of public health programs

72. ## data management grade 12

eight burglary suspects, two of whom are guilty, are placed in a line up. suppose that a witness is asked to identify the two guilty suspects but is unable to make a positive identification with any degree of confidence. if the witness feels compelled to

73. ## physics

A child and sled with a combined mass of 47.4 kg slide down a frictionless hill that is 8.61 m high. If the sled starts from rest, what is its speed at the bottom of the hill?

74. ## physics

Assume that 10 g of steam is added to 100 g of water initially at 19°C. The water is inside an aluminum cup of mass 35 g. The cup is inside a perfectly insulating calorimetric container that prevents heat flow from the outside environment. Find the final

are chimpanzees endangered?

76. ## math

10 to the 50th power

8g+2+4g-2-3g=? (9g)

78. ## the most dangerous game by richard connell reading

i did all the question except for these 3 characterization chart w/ 5 textually supported inferences specific to protagonist and 5 textually supported inferences specific to the antagonist. static/flat character with text support of intended stereotype

i need help i can not understand this Question i don't know where to find the answer i have been looking for hours please some one help me ! Question is my is in hospitality finances class Explain why depreciation expense should be added back when

80. ## math

A laptop that originally cost \$1,200 is on sale for \$950. Find the discount rate.

81. ## math

A recipe for a fruit shake calls for 5 parts milk, 3 parts banana puree, and 2 parts strawberry juice. Find the quantity of each ingredient necessary to make an 8 ounce shake.

82. ## Math

After getting approval to do additional fundraising Chris and Lacey decided to participate in a walkathon to raise money for the shelter. Chris walked 5 miles less than twice the number of miles that Lacey walked. The students will collect \$18 in pledges

83. ## english

prepositional phrases

84. ## chemistry

Hello this is ellie again. I was wondering could you explain what a bombardment reaction is and and show an example of it? Thanks

85. ## math

In a game played with 50 letter tiles, 21 of the tiles are vowels. If a tile is drawn at random, what is the probability that it is a consonant.

A crate is dragged 5.0 along a rough floor with a constant velocity by a worker applying a force of 125N to a rope at an angle of 30degrees to the horizontal. Calculate the work done by the tension in the rope, the force of friction, and the net force. I

87. ## Chemistry

What is the osmolar concentration of 1.000M CaCl2 solution

88. ## Chemistry

The freezing point of a solution or mixture is always ________ ?

89. ## Chemistry

The boiling point of a solution or mixture is always ________?

90. ## Physics

Can you give me the summary of work,force,potential & kinetic energy,power?

91. ## math

Angela scored in the 90th percentile of her class math test. If 27 students scored the same as or lower than she did, how many students are in the class?

92. ## Chemistry

N2+3H22NH3 Decreasing nitrogen: Increases or decreases hydrogen? Increases or decreases ammonia? Decreasing hydrogen : Increases or decreases nitrogen? Increase or decreases ammonia?

93. ## Puzzle question sports

h t t p : //imgur . c o m /fvJrYDc

94. ## Math

Write and solve an equation to answer the question How many miles did Lacey walk if Chris collected \$450 in pledges? 18(x)=450 x=25 How many miles did Chris walk 25

95. ## Puzzle question sport

What is this ?? h t t p : //imgur . c o m /CTGqqUa

96. ## LA: Interjection ASAP

which of the following is NOT a interjection? A) oops B) awesome c) maybe

97. ## LA: Word choice ASAP

Which of the following is NOT a good example of specific word choice? A) They were stranded on the island. B) They were left on the island. C) They were ditched on the island.

98. ## Math

How do I find the excluded value for m^2-8+16/ 5m^2+ m

99. ## Climax and Story Plots (ASAP)

1: what is a climax? 2: what does 'climax of the story's plot' mean? 3: what does story plot mean?

100. ## Math

Determine, with justi cation, the value of the remainder when 2^314 is divided by 91. (Hint: 91 = 13 * 7.)

Trigonometry Questions 1. Using a compound angle formula, demonstrate that sin2π/3 is equivalent to sin π/3 2. The expression sinπ is equal to zero, while the expression 1/cscπ is undefined. Why is the identity sin(theta)=1/csc(theta) still an

102. ## magnets

A very large loop of metal wire with radius 1 meter is driven with a linearly increasing current at a rate of 200 amps/second. A very small metal wire loop with radius 5 centimeter is positioned a small distance away with its center on the same axis (the

103. ## eletromagnets

In earlier learning sequences we described how a static magnetic field cannot change the speed (and therefore kinetic energy) of a free charged particle. A changing magnetic field can, and this is one way particle beams are accelerated. Consider free

104. ## electromagnets

A 100 gram resistive slider (thick line) moves without friction along a vertical U-shaped conducting track (thin line) that is 50 centimeters wide in a magnetic field of 5 Tesla as shown. The slider's resistance is 20 Ohms. It falls under the influence of

1. "If thou be'st born to strange sights, 10 Things invisible to see, Ride ten thousand days and nights Till Age snow white hairs on thee; Thou, when thou return'st, wilt tell me All strange wonders that befell thee, 15 And swear No where Lives a woman

106. ## Calculus

What is the integral of (x*f(x))dx?

107. ## Hello

Anyone here to help??

108. ## first year chem

There are two naturally occurring isotopes of chlorine with ratios of 76% and 24%. One mole of PCl3 is made using a sample of isotopically pure chlorine gas (containing only one of the two isotopes). The product weighs 142 g. If chlorine gas containing the

109. ## social studies

The Some Interest Credit Company provides loans to customers at 1.5 percent interest per month. Design an application that gets customer account data that includes an account number, customer name, and balance due. For each customer, display the account

110. ## programming logic

The No Interest Credit Company provides zero-interest loans to customers. (It makes a profi t by selling advertising space in its monthly statements and selling its customer lists.) Design an application that gets customer account data that includes an

111. ## math

"It takes Juwan exactly 35 minutes by car to get to his grandmother's. The nearest parking area is 4 minute walk from her apartment. One week he visited more often. He realized that he spent 5 hours and 12 minutes traveling to her apartment and then back

d) In the up-convertor 1, two photons are converted into one photon with 100% conversion efficiency. If all photons with energy above that of the band gap of a-SiC:H are absorbed in the a-SiC:H layer, in which spectral range can the photons be up-converted

113. ## Algebra 1 HELP

I am not sure how to do these 2 problems can someone show me. Simplify the expression Write answers using exponents. 8^6/8^4*8^2 4^5*1/4^2

114. ## Physics

A standing wave is set up in a string of variable length and tension by a vibrator of variable frequency. Both ends of the string are fixed. When the vibrator has a frequency fA, in a string of length LA and under tension TA, nA antinodes are set up in the

115. ## TO REINY

Hi reiny i just wanna say thank you for always answering my questions thanks for always helping me

116. ## LA

If the burn is large or involves the face, feet, groin, or buttock, see a doctor. If not the burn should be treated as minor. See treatment for minor burns, below. Which of the following questions might you ask yourself to monitor comprehension? a. How

117. ## Math Reasonableness

Brendan bought 14 used records at a garage sale. He paid \$0.75 for each record. How much did he play?

118. ## Algebra

What are the zeroes of y = x2 – 2x – 15? –3, –5 3, 5 –3, 5 3, –5

119. ## Statistics

True or False One requirement of a random sample is that every individual in the population has an equal chance of being selected.

120. ## physics

where are the incident and refracted rays located in relation to the normal

121. ## English

\$230.00 two hundred thirty dollars Or two hundred and thirty dollars Is there a dash between two and hundred?

122. ## Computer

Question 1 In the code below, there is an ambiguous reference in the constructor. The constructor is supposed to assign the value of the formal parameter to the class member variable x. Notice, however, that the formal parameter has the same name as the

123. ## Algebra

If x is the midpoint of line vy and wz And the prove is triangle vwx is congruent triangle yzx can you help me solve this using two column prove

124. ## Math

can somebody tutor me

125. ## the alchemist

what advice the Alchemist give Santiago?

126. ## Math

(1) 4/5 Multipled by 5/7 in simplest form. My answer is 1.9 don't really know if its write show work. (2) -1 1/6 divided by 2/9= -5 1/4 need help showing work. (3)-6 2/5 divided by (-2 2/7) = 2 4/5 (4) 2 2/3 divided by (-4 1/4) = -11 1/3 i nedd help

127. ## Electromagnetics

A 100 gram resistive slider (thick line) moves without friction along a vertical U-shaped conducting track (thin line) that is 50 centimeters wide in a magnetic field of 5 Tesla as shown. The slider's resistance is 20 Ohms. It falls under the influence of

128. ## physics

In earlier learning sequences we described how a static magnetic field cannot change the speed (and therefore kinetic energy) of a free charged particle. A changing magnetic field can, and this is one way particle beams are accelerated. Consider free

129. ## Science need help

A group of students are setting up the first experiments, looking at the growth of roots in water containing an added factor. They have decided to grow seeds in both in pure tap-water and in water with a defined amount of vinegar added. As part of their

130. ## chemistry

I am having trouble understanding what the concept is for writing these out. Write a balanced nuclear equation for the alpha decay of each of the following radioactive isotopes: curium-243, 22589Ac

131. ## Math - Trig

1. When you look down from the top of a building at an angle of 63degrees, you will see a man reading a newspaper. If the building is 50m high, how far is the man from the building? 2. A plane takes off at an angle of 15deg20'. How high will it have risen

132. ## Language Arts

Help Please!! Answer the following question about the essay "Escaping." Give an example of one internal and one external conflict from the selection. (Escaping) Nowadays we live in a constant hurry, compete with each other, we are uncertain of future,

133. ## Algebra 2

I am trying to find the inverse of these functions. Can someone please check my answers and tell me how to do number 2? 1. y=7^x y=log base 7 x 2. y=log base 1/2 x 3. y=2^(x)-3 y=2^(x+3) 4.y=6+log x

134. ## physics

The flywheel of a motor is connected to the flywheel of an electric generator by a drive belt. The flywheels are of equal size each of radius . While the flywheels are rotating the tension in the upper and lower portions of the drive belt are and

135. ## stats

in a sample of 159,949 first year college students, the national survey of student engagement reported that 39% participated in community service or volunteer work.find the margin of error for 99% confidence. ...idk what formula to use.

136. ## Physics

A cheetah can accelerate from rest to 24.1 m/s in 2.02 s. a) Assuming the acceleration is constant over the time interval, what is the magnitude of the acceleration of the cheetah? b) What is the distance traveled by the cheetah in these 2.02 s? c) A

137. ## Algebra

Can anyone help me with the following, by providing the steps to get there and what it is that you are doing? any help would be greatly appreciated... We define the following functions: f(x)=2x+5 g(x)=x^2-3 h(x)=7-x/3 ◦Compute (f – h)(4). ◦Evaluate

Can you check the following problems related to inequalities? 1) Sue has more than 5 cookies. Ans: x > 5 2) The temperature was less than 88 degrees last night. Ans: x < 88 3) I made \$75 or more dollars babysitting. Ans: x >= 75? 4) I need to make a 70 or

139. ## Algebra NEED HELP PLEASE

If x is the midpoint of line vy and wz And the prove is triangle vwx is congruent triangle yzx can you help me solve this using two column prove

140. ## Physics

A particular piano wire has middle C (261.7 Hz) for its second harmonic. The wire's length is 2.7m. What is the speed of the wave in the wire? If the wire has 270 lbs of tension what is its linear density? What is the wavelength of this tone emitted into

141. ## Biology

I am doing a research paper on multiple sclerosis. Can you recommend a book that I can use in my research?

142. ## Physics

Placing a 215 g mass on a vertical spring causes a stretch of 5.1 cm. The mass is released at t=0 with y=0.15m (higher than the equilibrium hanging length) with a velocity of v=-1.3 m/s. What is the spring constant of the spring? What is the amplitude of

143. ## college stats

in a sample of 159,949 first year college students, the national survey of student engagement reported that 39% participated in community service or volunteer work.find the margin of error for 99% confidence. what formula do I use? I know the 99% interval

144. ## Physics

A particular asteroid has a circular orbit about the Sun with a radius of 450 million miles. How long does it take to go around the sun? Compare the prediction of Kepler's 2nd law to a direct computation with Newton's 2nd law. How much area does the line

145. ## Physics

The gravitational acceleration on the surface of Mercury is 0.38 times that of Earth. Its radius is also about 0.38 times that of the Earth. What is the ratio of the density of Mars to that of Earth?

146. ## Physics

Seawater has a density of about 1024 kg/m^3. In fresh water, the water line on a certain rectangular raft (8.8cm thick) moves 3.2 cm when a load of cargo is placed on it. How much will the same load of cargo move the water line in seawater? What is the

147. ## Physics

When the end of a particular garden hose is held at a height of 1m, water flows out of it at 8 cm/s. What is the difference in fluid pressure between the end of the hose and a portion resting on the ground? Suppose I cover half of the area at the end with

148. ## science

when light travels from air into glass at an angle of incidence greater than o degrees, how is it bent in relations to the normal?

149. ## math

how do I rename 10 as a fraction

150. ## chem

A weak acid, HA, has an ionization constant of 4.34 x 10-8. If we prepare a solution that is 0.273 M in HA what percent of the acid will be ionized

151. ## psychology

How do the experiences of children who feel anxiety or depression compare to those of adults who feel anxiety or depression? Explain your answers.

152. ## Algebra 1

6y^-3 Can you show steps on how to do this

153. ## Calculus

In the interval (0 is less than or equal to x which is less than or equal to 5), the graphs of y=cos(2x) and y=sin(3x) intersect four times. Let A, B, C, and D be the x-coordinates of these points so that 0

154. ## physics

A 0.67-kg metal sphere oscillates at the end of a vertical spring. As the spring stretches from 0.10 to 0.21 m (relative to its unstrained length), the speed of the sphere decreases from 5.35 to 4.55 m/s. What is the spring constant of the spring? (The

155. ## Chemistry

Calculate the pH at the equivalence point for the titration of 0.180 M methylamine (CH3NH2) with 0.180 M HCl. The Kb of methylamine is 5.0× 10–4.

156. ## Math-Trig

1. To avoid a steep descent, an airplane flying at 10 000 m starts its descent 60km away from the airport. For the angle of descent to be constant, at what angle should the plane descend? 2. A flagpole that is 20m high casts a shadow that is 18m long. What

157. ## Chemistry

Calculate the change in pH when 5.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq) and 0.100 M in NH4Cl(aq).

158. ## Biology

Do breeders observe the genotypes or phenotypes in their organisms?

159. ## Statistics

A normal distribution has a mean of ƒÝ = 100 with ƒã = 20. If one score is randomly selected from this distribution, what is the probability that the score will have a value between X = 90 and X = 110? a. 0.6915 b. 0.3085 c. 0.1915 d. 0.3830

160. ## college stats

Suppose population proportion1 = 0.4, sample size1 = 100, population proportion2 = 0.5, sample size2 = 120. whats the formula? i think this is just a plug and chug

161. ## Science need help

A group of students are setting up the first experiments, looking at the growth of roots in water containing an added factor. They have decided to grow seeds in both in pure tap-water and in water with a defined amount of vinegar added. As part of their

162. ## history

-the plan of Tutankhamun's tomb when Howard Carter found it- When did Carter go into the different rooms? What do you think? Put them in order. Number them 1-4. a. burial room ( ) b. treasure room ( ) c. small room ( ) d. long room ( ) -------- Whill you

163. ## Chemistry

A solution was prepared in which 12.0 g of glycerin was dissolved in 80.0 g of water. The freezing point of the solution was -3.03 °C. Use this information to determine the molar mass of glycerin.

164. ## Biology 1

Does anyone know of a Photosynthesis concept map that includes all of the following: Photons, thylakoids, reactions, sun, NADPH, carbohydrates, xanthophyll, wavelength, pigments, stroma, product, photosynthesis, NADP+, visible light, glucose, energy,

165. ## ALGEBRA 1 HELP

Your hole punch makes holes in your that have diameter of 4^-1 inch. a.Write an expression for the area of one punched hole. Use the formula for the area of a circle A=:r^2. (: is pi sign) b.Your hole punch makes three holes in a page . Write an expression

166. ## english

can somebody give me ten facts about Hades, keeper of the underworld?

167. ## Math

What division sentence means the same as the following subtraction sentences? 12- 4 = 8 8-4=4 4-4=0

168. ## us history

can you list any political and economic factors of the lewis and clark expedition.

169. ## math

number sense what division sentence means the same as the following subtraction sentences? 12-4=8 8-4=4 4-4=0

170. ## Algebra 2

A grocer mixes x kg of Grade A and Y kg of Grade B nuts to get 60 kg of mixed nuts. Write and equation involving x and y to represent this information. The grocer sells all the mixed nuts at 9.00 per kg. He receives the same amount of money as when he

171. ## English

Read the following lines from “Fable for When There’s No Way Out”: “Despair tempts him / to just go limp.” What is the best interpretation of these lines? The chick is angry at how difficult it is to break free from his shell. The chick is so

172. ## physics

A convex mirror of radius of curvature 1.64 m is placed 0.277 m from a chess piece which is on the reflecting side of the mirror. What is the position of the image? What is the magnification?

173. ## physics

A convex mirror of radius of curvature 1.64 m is placed 0.277 m from a chess piece which is on the reflecting side of the mirror. What is the position of the image? What is the magnification?

174. ## algebra

A ball is thrown upward from a height of 240 feet. the height h of the object(in feet) t seconds after the ball is released is given by h=-16t^2+32t+240 a. how long does it take the ball to reach its maximum height? b. what is the maximum height attained

175. ## Math

How do you use a "quick picture" to find 5 x 2.7.

176. ## Math

Find six consecutive multiples of 6 whose sum is the least common multiple of 13 and 18.

177. ## Math

Find the greatest ten digit positive multiple of 12 using each digit once and only once .

178. ## Math

Find the next three values in the following sequence of numbers. -1,0,1,0,1,2,3,6,11,20,37

Use the correct pronoun in parentheses. The book ( it, itself) is a collector's item. Please help. Thanks.

180. ## Chemistry

Is carbon phosphate an ionic, polar covalent, or non polar covalent bond?

Trigonometry Questions 1. Using a compound angle formula, demonstrate that sin2π/3 is equivalent to sin π/3 2. The expression sinπ is equal to zero, while the expression 1/cscπ is undefined. Why is the identity sin(theta)=1/csc(theta) still an

182. ## Math

What is equivalent percent of 2/6? . What is equivalent percent of 4/6?

183. ## Math2

A "quick picture" is an estimate than? 5 x 2.7 ..... 5 x 3= 15 Its been a long time since elementary school and I do not remember "quick picture" The question was How can you use a "quick picture" to find 5 x 2.7? the answer is 13.5.......an estimate would

184. ## Sacred heart

Wouldn't is to couldn't as green is to

185. ## Astronomy

1. Imagine that the Earth¡¦s spin were to be reversed, so that the planet rotated about its axis from East to West, at the same rate at which it now rotates from West to East. If Earth¡¦s orbital motion about the Sun were unchanged, which of these

186. ## science

which of the following explains why your body may contain a carbon atom that was present in George Washington's body in 1776

187. ## Math

It is estimated that are 21 deaths for every 10 million people who use airplanes. A company that sells flight insurance provides 100,000 in case of death in a plane crash. A policy can be purchased for \$1. Calculate the expected value and thereby determine