# Questions Asked onNovember 10, 2013

1. ## Science

Which of the following explains why a bone in a bird’s wing is homologous to a bone in a lizard’s front leg? a.The bones in the two species provide for the same type of motion. b.The bones in the two species are both vestigial structures. c.The two

2. ## Physics

A certain spring stretches 5.8cm when a load of 38N is suspended from it. How much will the spring stretch if 48N is suspended from it (and it doesn't reach its elastic limit)?

3. ## Physics

the 8kg mass of an object moves in a distance of radius 10cm at 15m^2.calculate the angular velocity

4. ## Fluid Mechanics

A sluice gate consists of a quadrant of a circle of radius 1.5m pivoted at its centre O. Its centre of gravity is at G, as Shown in fig 1. When the water is level with the pivot O, calculate the magnitude and direction of the resultant force on the gate

5. ## Science

Which experimental approach would be most effective and easiest to clearly determine the evolutionary relationship between these two organisms? a. sequence the same gene in both species to compare their similarity. b. dissect specimens of both species to

Pete Air wants to buy a used Jeep in 5 years. He estimates the Jeep will cost \$15,000. Assume Pete invests \$10,000 now at 12% interest compounded semiannually. Calculate the maturity value of the investment

7. ## law and ethics in allied health

res ipsa loquitur means the burden of proof? a.falls on the plaintiff b.proves the negligence c.shifts to the defendant d.exceeds reasonable doubt my answer is c

8. ## Math

When estimating distances from a table of velocity data, it is not necessary that the time intervals are equally spaced. After a space ship is launched, the following velocity data is obtained. Use these data to estimate the height above the Earth's

9. ## Finance

Corporate bonds issued by Johnson Corporation currently yield 11.5%. Municipal bonds of equal risk currently yield 6.5%. At what tax rate would an investor be indifferent between these two bonds? Round your answer to two decimal places.

10. ## Chemistry

A compound containing only boron, nitrogen, and hydrogen was found to be 40.3% B, 5202% N, 7.5% H by mass. If 3.301g of this compound is dissolved in 50.00g of benzene, the solution produced freezes at 1.30 degree celsius. if the freezing point depression

11. ## Health

3. All drugs are not medicines because not all drugs are used to cure, prevent, of treat illness or discomfort. In fact, some drugs possess mind-altering effects that have no medical purpose such as drugs of abuse, which alters the manner in which the

12. ## Finance

A 10-year bond has a coupon rate of 7% annually and a principal payment of \$1,000.0. Other similar bonds are paying 9% annually. To determine the value of the bond you must find the interest factors, IF. at: A. 9% for 10 periods B. 9% for 20 periods C.

13. ## Probability

When I swing at a nail, I drive it all the way in with probability 1/2. With probability 1/4, I hit it half-way in, and with 1/4 probability I miss it entirely. I'm pretty sure that if I swing 4 times at a nail, I'll get it all the way in almost all the

14. ## physics

A light inflexible cable is wrapped around a cylinder of mass , radius , and moment of inertia about the center of mass . The cylinder rotates about its axis without friction. The cable does not slip on the cylinder when set in motion. The free end of the

15. ## algebra

Which choice could be the equation of a line perpendicular to the line represented by this equation? y = 5 for this question, i put this: y = -1/5x but, it says i am wrong. how is that? 5 is 5/1, and so the negative reciprocal of 5/1 would be -1/5, right?

16. ## physics

Masses 19 kg and 9 kg are connected by a light string that passes over a frictionless pulley as shown in the figure ( The figure shows the 19 kg block on the table connected by a string through a pulley which is connected to the 5 kg block hanging off the

17. ## physics

Masses 19 kg and 9 kg are connected by a light string that passes over a frictionless pulley as shown in the figure ( The figure shows the 19 kg block on the table connected by a string through a pulley which is connected to the 5 kg block hanging off the

18. ## Health (Ms. Sue)

Evaluate how alcohol use can affect a person's behavior.

19. ## algebra

What is the slope of the line that is perpendicular to the line represented by the equation below? 4x - 5y = -1 A. 4/5 B. -4/5 C. 5/4 D. -5/4 is this c or d? reiny, i used what you said, but since this is subtraction i was unsure of whether or not it would

A rod is 2.40 m long and has a diameter of 2.50 mm. A force of 2000 N is applied to the end to stretch the rod by 1.00 mm. What is the tensile modulus for this rod? 7.50 × 1011 N/m2 8.70 × 1011 N/m2 9.78 × 1011 N/m2 10.2 × 1011 N/m2 10.8 × 1011 N/m2

21. ## CALCULUS

If you could give an explenation with the answers, that'd be wonderful so I actually know how to solve similar problems in the future. :) Thank you so much! 1. A convex lens with focal length f centimeters will project the image of an object on a point

22. ## math

An advertising agency conducted a survey and found that the number of units sold, N, is related to the amount a spent on advertising (in dollars) by the following formula: N = 1,500 + 300 ln a (a ≥ 1) How many units are sold after spending \$1,000?

23. ## film

What does it mean for a film to be presented in “chronological order”?

24. ## Science

A portion of the amino acid sequence of an enzyme from a worm is shown below. -Q-Q-Q-N-N-N-C-C Analyze the same portion of the same enzyme taken from several other organisms. Place them in order from most closely related to the worm most distantly related

25. ## algebra

Which choice is the equation of a line that passes through point (7, 3) and is parallel to the line represented by this equation? y = 2/7x - 3 A. 7x + 3y = 2 B. y = 2/7x + 1 C. y = -7/2x -3 D. 2x + 7y = 1 i would assume that the answer to this would be B,

26. ## Chemistry

For the reaction Zn(OH)2(s)+4CN-(aq)->Zn(CN)4 2-(aq)+2OH-(aq) find [CN-] when 8.5 g of Zn(OH)2 are dissolved in 1.00 L of solution.

27. ## Chemistry

Hydrogen exhibits several series of line spectra in different spectral regions. For example the Lyman series (nf = 1 in Balmer-Rydberg equation) occurs in the ultraviolet region while the Balmer (nf = 2) series occurs in the visible range and the Paschen

28. ## physics

A capacitor has circular plates of radius \(r = 12\,cm\) that are a distance \(d = 0.1\,cm\) apart. What is the capacitance of this capacitor in \(F\)?

29. ## PHYICS

A person is standing on a level floor. His head, upper torso, arms, and hands together weigh 470 N and have a center of gravity that is 1.13 m above the floor. His upper legs weigh 108 N and have a center of gravity that is 0.755 m above the floor.

30. ## Phyics

A 1390-N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A 1960-N crate hangs from the far end of the beam. Using the data shown in the figure, find (a) the magnitude of the tension in the wire and the

31. ## Physics

An incompressible fluid is flowing through a horizontal pipe with a constriction. The velocity of the fluid in the wide section of the pipe is 4.00 m/s and the velocity of the fluid in the narrow section of pipe is 9.00 m/s. The pressure of the fluid in

32. ## Personal Finance

On December 1, 2004 a \$1,000.00 bond, paying 6% interest on January 1st and July 1st of each year is purchased for \$950.00. The bond is sold on December 5, 2005 for \$980.00. What would be the total monetary return including both interest and capital gains

33. ## BCIT

A series of standard solutions of benzene in toluene solvent is to be prepared for an internal standard procedure with ethylbenzene serving as the internal standard. Tell how you would prepare the solutions, including the milliliters of benzene

34. ## chem

What volume of carbon dioxide gas (at STP) is produced when 1.01 moles of oxygen gas react completely? 2CO + O2 -> 2CO2

35. ## PHYSICS helppp!!!

A conductor consists of a circular loop of radius R and two straight, long sections The wire lies in the plane of the paper and carries a current I. Find an expression for the vector magnetic field at the center of the loop

36. ## Math

3 1/6 + 2 3/10 = Give answer in simplest form

37. ## 9th algebra

the sum of the digits of a two place fraction is 9. When its digits are reversed, the new fraction exceeds the original by 0.09. Find the original fraction.

38. ## Algebra

R(x)= 360x - 0.04x^2

39. ## Probability

In the card game bridge, each of 4 players is dealt a hand of 13 of the 52 cards. What is the probability that each player receives exactly one Ace?

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40. ## Algebra

Which choice could be the equation of a line parallel to the line represented by this equation? 7x− 12y = −32 A. y = 12/7x - 3 B. y = -7/12x + 5 C. y = 7/12x - 9 D. y = 7x - 12 can someone please give me a step-by-step on how to do this? i'm having a

41. ## algebra

what is the cube root of -125x^6

42. ## chemistry

Hydrogen exhibits several series of line spectra in different spectral regions. For example the Lyman series (nf = 1 in Balmer-Rydberg equation) occurs in the ultraviolet region while the Balmer (nf = 2) series occurs in the visible range and the Paschen

43. ## Pre-Calc

I really need to understand wha tmakes a graph have these discontinuities 1)Removable 2)Non-Removable and how to tell them in a function

44. ## Calculus Sigma Notation

Find a and n such that: 8+16+32+64+128 (k=a) a=? n=?

45. ## Calculus

For p = 15e^-x, 0 < x < 7, find the local extrema

46. ## Math

When calculating the extremas, is there really a difference between relative and absolute extremas? Or are they just used interchangeably?

47. ## Algebra

A manufacture of CD player has monthly fixed cost of 8600 and variable cost of 55 per unit for one particular model. The company sells this model to dealers for 115 each. Which is their function for the profit. Please show all work.

48. ## MATH

what is : 4)x+y)-10

49. ## MATH

5000000 times x divied by y ?

50. ## Science

Study the wings of the birds in the two images below. Which of the following words applies to only one of the wing structures represented in this pair of species? A. homologous B. developmental C. vestigial D. inherited I cannot post the pictures, but they

51. ## physics

What is the magnitude of the net electrostatic force a Boron nucleus would experience at the point halfway between the Magnesium nucleus and the 3e charge on the y axis in N?

52. ## Algebra

Find the equation of the line with y intercept 2 and perpendicular to the line y = 2/3x -4

53. ## physics

What is the magnitude of the net electrostatic force a Boron nucleus would experience at the point halfway between the Magnesium nucleus and the 3e charge on the y axis in N?

54. ## math/ algebra 1

can someone please help me explain how they got this answer and can someone please show me the steps into solving this question? Q: Four more than the quotient of a number and three is at least nine.

55. ## Math

Tristen has three 4 foot long boards. He needs to cut pieces that are 13 inches long from the boards. What is the greatest number of boards he can cut?

56. ## algebra

Which equation produces a line that is perpendicular to the line represented by the function below? y = 2/5x + 9 A. 5x + 2y = 4 B. 2x - 5y = 8 C. 5x - 2y = -3 D. 2x + 5y = -7

57. ## Chemistry

Hydrogen exhibits several series of line spectra in different spectral regions. For example the Lyman series (nf = 1 in Balmer-Rydberg equation) occurs in the ultraviolet region while the Balmer (nf = 2) series occurs in the visible range and the Paschen

58. ## Chemistry

What is the mass of a fly in grams if its de Broglie wavelength is 1.545e-31 m when it is traveling at a velocity of 3.605 m/s

59. ## Chemistry

Heisenberg's uncertainty principle can be expressed mathematically as Δx*Δp = h/4π, where Δx and Δp denote the uncertainty in position and momentum respectively and h is Planck's constant. What would be the uncertaintry in the position of a neutron

60. ## algebra 1

a number is less than one fourth of the sum of three times the number and four. can someone please explain to me how they got this answer and can someone please show me each step.

61. ## chemistry

What is the the energy (in kJ/mol) of infrared radiation that has a frequency of 3.809e+13 Hz? The speed of light is 3.00x108 m/s and Planck's constant is 6.626x10-34 J*s. So i know the equation we use is E= hc/wavelength but i keep getting the wrong

62. ## Algebra

What is the equation of the line that has a y-intercept of 5 and is parallel to the line represented by the equation below? 2x - y = 16 A. y = 2x + 5 B. y = -2x + 5 C. y = 1/2x - 5 D. y = -1/2x - 5 I guessed B for this one, but another choice of mine was

63. ## Phyics

A uniform board is leaning against a smooth vertical wall. The board is at an angle above the horizontal ground. The coefficient of static friction between the ground and the lower end of the board is 0.710. Find the smallest value for the angle , such

64. ## Phyics

A 49-N crate is suspended from the left end of a plank. The plank weighs 21 N, but it is not uniform, so its center of gravity does not lie halfway between the two ends. The system is balanced by a support that is 0.30 m from the left end of the plank. How

65. ## ncc

a block of mass M, resting on an incline with angle theta, is attached to a second block of mass m by a cord that passes over a smooth peg at the top of the triangular-shaped incline. all surfaces are frictionless. find the minimum and maximum values of m

66. ## math

Company A rents copiers for a monthly charge of \$200 and \$0.08 per copy. Company B rent copiers for a monthly charge of \$400 and \$0.04 per copy. How many copies produce the same bill? The answer I have is 5,0000 is this correct? Thanks

67. ## HR

A restaurant with over 300 employees in 3 different locations with the owner solely running the business. Explain how automation might create a more efficient process from the HR function chosen. How might an HRIS application assist the business?

68. ## Math

Solve for B: A=1/2(b+B) h show work. I am struggling with the above equation can someone please help? Thanks

69. ## physics

A block accelerates at 3.3 m/s2 down a plane inclined at an angle 27.0. m μk 3.3 m/s2 27 Find μk between the block and the in- clined plane. The acceleration of gravity is 9.81 m/s2 .

70. ## PreCal

Find all real numbers x and y -2x-4-2yi=3x-2i 5x+2yi=-4+2i 5x=-4 so x=-4/5 2yi=2i so you =1 This was what I got by an online calculator said x=-4/5-2iy/5+2i/5 y=5ix/2+2i+1 Which is right?

71. ## Science

Which experimental approach would be most effective and easiest to clearly determine the evolutionary relationship between these two organisms? a. sequence the same gene in both species to compare their similarity. b. dissect specimens of both species to

72. ## physics

A block is at rest on the incline shown in the figure. The coefficients of static and kinetic friction are μs = 0.7 and μk = 0.59, respec- tively. The acceleration of gravity is 9.8 m/s2 What is the frictional force acting on the 29 kg mass? Answer in

74. ## Math

1. A customer comes into Pierre's and orders a random assortment of 6 danish. At the time she comes in, there are 26 danish sitting out: 12 raspberry, 8 cheese, and 6 cinnamon. Assume the danish are not replaced. a) What is the probability that the third

75. ## physics

A bicycle chain is wrapped around a rear sprocket (r = 0.041 m) and a front sprocket (r = 0.15 m). The chain moves with a speed of 1.4 m/s around the sprockets, while the bike moves at a constant velocity. Find the magnitude of the acceleration of a chain

76. ## Finance

Following are selected financial data in thousands of dollars for the Hunter Corporation. 2012 2011 Current assets \$ 500 \$400 Fixed assets, net 700 600 Total assets 1,200 1,000 Current liabilities 300 200 Long-term debt 200 200 Common equity 700 600 Total

77. ## science

A bullet is fired horizontally with a velocity of 250 m/s from the top of a building 100m high. Find the Horizontal and vertical velocities of the bullet when it reaches the ground, the resultant velocity, the horizontal displacement, the net displacement,

78. ## physics

The magnitude of each force is 283 N, the force on the right is applied at an angle 41 and the mass of the block is 27 kg. The coefficient of friction is 0.283. The acceleration of gravity is 9.8 m/s2 . 27 kg μ = 0.283 283 N 41 degrees 283 N What is the

79. ## physics

A capacitor has circular plates of radius r=12cm that are a distance d=0.1cm apart. The capacitor is hooked up to a 12V battery. If the plates are pulled apart so that they are now a distance d=0.2cm apart, what magnitude of charge accumulates on each

8x/6y divide by 2x/3y

81. ## physics

Consider an insulating sphere with 10 microCoulombs of charge uniformly distributed through its volume. The sphere is surrounded by a conducting spherical shell that has a total charge of -3 microCoulombs. Outside the conucting shell is an insulating shell

82. ## PHYSICS

What's the total mechanical energy of a 300kg satellite in circular orbit 1400km above Earth's surface?

83. ## physics

three electric charges, 3e, 3e and 12e, where "e" is proton charge, are placed at three of four vertices of a square of side 3cm. Calculate the electric field in the center of the square.

84. ## PHYSICS

At what height above Earth's surface is the gravitational acceleration reduced from its sea-level value by 0.40%?

85. ## Physics

Acoustics. How do engineers design buildings to reduce noise pollution?

86. ## algebra

An advertising agency conducted a survey and found that the number of units sold, N, is related to the amount a spent on advertising (in dollars) by the following formula: N = 4,500 + 200 ln a (a ¡Ý 1)How many units are sold after spending \$1,000?

87. ## College Physics

A wooden bridge crossing a canyon consists of a plank with length density λ = 2.25 kg/m suspended at h = 10.89 m below a tree branch by two ropes of length L = 2h and with a maximum rated tension of 2000 N, which are attached to the ends of the plank, as

88. ## chemistry

A 0.411 mol sample of PCl5(g) is injected into an empty 4.65 L reaction vessel held at 250 °C. Calculate the concentrations of PCl5(g) and PCl3(g) at equilibrium.kc=1.80 at 250c

89. ## Statistics

Hoping to lure more shoppers downtown, a city builds a new parking garage in the central business district. The city hopes that the parking revenues will pay for the garage. During a recent two month period (44 days), the city statistician calculated the

90. ## Statistics

Hoping to lure more shoppers downtown, a city builds a new parking garage in the central business district. The city hopes that the parking revenues will pay for the garage. During a recent two month period (44 days), the city statistician calculated the

91. ## health

All of the following should be considered competitors, with the exception of which one? Existing competitors, Indirect competitors, Potential competitors, Direct competitors

92. ## stats

Suppose that 20% of Canadians smoke. In a random sample of 20 Canadians, find the probability that more than 1 smokes

93. ## science help!!!

Explain how your respiratory system could help guard your body against pathogens that are in the air.

94. ## physics

A spacecraft is in circular Earth orbit at 5400km altitude. By how much will its altitude decrease if it moves to a new circular orbit where its orbital speed is 20% higher?

imageshack(.)(us)/photo/my-images/42/2vja.jpg/ Open that link please , just delete the parentheses please please help me with my assignments I beg you cooperate with me huhu 1. in the figure , the areas of traingle cef, triangle abe, triangle adf are 3,4,

96. ## math

The graph of the function f(x)=2^x/a passes through the points (0,b) and (2,0.8). Calculate the values of a and b. Thank you so much for huge help:)))

97. ## Science

an insect undergoes major changes in its life cycle - from egg, to larva, to pupa, to adult. This insect goes through what?

98. ## American National Government

Originalists often hold that it is incorrect to use the Equal Protection Clause of the Fourteenth Amendment to strike down laws that discriminate because

99. ## Chemistry

A sample of unknown metal has a mass of 36.7 g. This metal was placed in boiling water at 96.0oC until the metal had reached the temperature of the water. The metal was then placed in a foam cup with 50.0 g of water in it at 20.0oC. The cup absorbs 42.0

100. ## chemistry

What mass of ammonia is produced when 1.48 L of nitrogen (at STP) react completely in the following equation? N2 + 3H2 --> 2NH3

101. ## chemistry

What volume of carbon monoxide gas (at STP) is needed when 1.31 moles of oxygen gas react completely in the following equation? 2 CO + O2 --> 2 CO2

102. ## science help!!

You suffer from severe allergic reactions to things like stings from bees and wasps. What would be an important preparation for you if you were going to a farm to pick fruit?

1)a bag contains five red marbles and seven blue marbles. you pull one marble out of the bag and replace it before putting out a second marble. what kind of event is this? independent, dependent, or both? 2) A bag contains 5 marbles. Without looking, you

104. ## chem

What volume of ammonia gas will be produced when 6.52 L of hydrogen react completely? 2N2 + 3H2 -> 2NH3

105. ## college essay

can someone edit my college essay? I was told by an admissions counselor to write a supplement describing my low cumulative GPA. It is a rough first draft, and probolaly needs to be heavily edited I am my truest and purest self, a mere child embarking on

106. ## physics

if 3e charge is at the origin and magnesium nucleus is 3cm fom thr origin in the x-axis. what is the magnitude of the net electrostatic force a Boron nucleus would experience at a point half way between magnesium nucleus and 3e.

107. ## Astronomy

Which photon carries the highest energy? a) Infrared. b) Red light. c) Blue light. d) X-ray.

108. ## Algebra

The depth of the water in Jeanne's hot tub varies directly with the number of minutes that the faucet is turned on. At 8.15 A.M Jeanne's started filling her circular hot tub with water. At 8.59 A.M there was a foot of water in the tub. When will the hot

109. ## Psychology

I need help on collecting information for my research paper. Thanks in advance. Prepare a 1,400- to 1,750-word paper in which you explain the interaction between hormones and behavior, and how these interactions affect the determination of gender identity.

110. ## Evolution

Which experimental approach would be most effective and easiest to clearly determine the evolutionary relationship between these two organisms? a. sequence the same gene in both species to compare their similarity. b. dissect specimens of both species to

111. ## math check

a rectangle has an area of 319 square centimeters, and a length of 11 centimeters. what is its width? 319-22 =298 widths

112. ## math

Using the data in the table, calculate the mean, range, variance, and standard deviation, and then answer questions e and f. Round the variance and standard deviation to one decimal place. a. Mean b. Range c. Variance d. Standard deviation e. What value is

113. ## Civics

When was the 14th amendment passed?

114. ## law and ethics in allied health

a formulary is a list of? a.procedurals steps to resolve ethical conflicts in the medical office b.approved drugs for which the insurance company pays c.proper behaviors and manners for a certain community d.employes covered by an employers health

115. ## History (black death)

Which best describes the right answer to: The Black Death first came to Europe- a) through sailors in Italian ports. or b) through merchants trading in France. I know that it was spread through ship. But the wordings that she put is so confusing....

116. ## Algebra

A chemist has two solutions of sulfuric acid. The first is one half sulfuric acid and half water. The second is three-fourths sulfuric acid and one fourths water. He wishes to make 10 liters of a solution which is two-thirds sulfuric acid and one-thirds

117. ## physics

What is the charge of a bare Magnesium nucleus (no electrons, just the protons and neutrons) in Coulombs?

118. ## dynamics

A slotted disk is rotating with constant angular velocity ω−−, as shown in the figure. A ball of mass m slides out from the center of the disk. Kinetic friction force F=μk|N| acts on the mass, where N is the normal force between the ball and the

119. ## Algebra

Show all steps and Find the maximum revenue for the revenue function R(x)= 360x - 0.05x^2

120. ## law and ethics in allied health

mens rea is latin for a.let the master answer b.the guilty mind c.the thing speaks for itself d.the guilty act my answer is b

121. ## chemistry

Calculate the partial pressure of propane in a mixture that contains equal numbers of moles of propane (C3H8) and butane (C4H10) at 20 °C and 616 mmHg. (R=0.082 L-atm/K mol)

122. ## chemistry

Calculate the partial pressure of propane in a mixture that contains equal numbers of moles of propane (C3H8) and butane (C4H10) at 20 °C and 616 mmHg. (R=0.082 L-atm/K mol)

123. ## PreCal

Determine the value of c for which the following quadratic equations will have one root. x^2-5x+c=0 I have no idea what formula to use to figure this out.

124. ## math

2 ln e = ln sq rt. 7/x-2 ln e

125. ## chemistry

Calculate the partial pressure of propane in a mixture that contains equal numbers of moles of propane (C3H8) and butane (C4H10) at 20 °C and 616 mmHg. (R=0.082 L-atm/K mol)

126. ## law and ethics in allied health

an epidemic that becomes very widespread ans affects a whole region is called a a.vaccination b.pandemic c.formulary d.diaster my answer is d

127. ## physics

A football player runs directly down the field for 35m before turning to the right at and angle of 225 degrees from his original direction and running an additional 15m before getting tackled. What is the distance from the player's original starting point

128. ## law ans ethics in allied health

the science of improving hededitary is known as a.genetics b.amniocentesis c.dna research d.eugenics my answer is a

129. ## Civics

Why was the 14th amendment passed/needed? My answer- To guarantee all former slaves and their children were legally citizens of the USA under the Constitution.

130. ## math

A politician claims that she will receive 59% of the vote in an upcoming election. The results of a properly designed random sample of 100 voters showed that 54 of those sampled will vote for her. Is it likely that her assertion is correct at the 0.05

131. ## Calculus

Find the critical points of f(x) = 0.05x + 25 + (180/x)

132. ## math

Students are hanging their art projects in the school hallway. Each student wants to hang a project that is 7/8 foot wide. The hallway is 16 feet long. If they don't leave any space between each project, how many projects will fit in the hallway

133. ## PreCal

express in form a+bi (1+2sqrt3)(2-3sqrt-3) so I came up with 2-3i sqrt3 + 4sqrt3 - 18i Is that solution a+bi form

134. ## Evolution

Which of the following explains why a bone in a bird’s wing is homologous to a bone in a lizard’s front leg? a.The bones in the two species provide for the same type of motion. b.The bones in the two species are both vestigial structures. c.The two

135. ## Math

How do you find the point of intersection of cosx=cos2x?

136. ## Pre-algebra

Find the equation of a line that contains (-2, -2) and is perpendicular to y= -x+3

137. ## algebra

2b - 2/ 2b2 - 8

138. ## Algebra

A manufacture sells watches for \$31. The manufacture has a fixed cost of \$6000 per month and variable cost of \$15 per watch. How many watches must be sold to break even? Please show all work!

139. ## Physics Part 2

Rick's next shot isn't as good. She hits the cue ball with a velocity of 5.6 m/s and it hits the 4 ball. The cue ball bounces off at a 45 degree angle off it's original path at a speed of 3.5 m/s. What is the velocity of the 4 ball? ---So all i know is the

2x3 squared

141. ## Math

Audrey bought 7 pounds of diced apples and shared them equally among 4 friends. How many pounds of apples did each person receive? Two of the friends put the portions they received together and then gave them to the food pantry. How many pounds of apples

142. ## Math

Can someone help me? How would I write 0 < x < 80 and 80 < x < 175 in interval notation?

143. ## science

which of earths spheres contains most of is mass ? a) atmosphere b) hydrosphere c) geosphere d) biosphere

144. ## math

The produce manager receives 5 containers of green beans, each weighing 7 pounds. She divides the total amount of green beans into 3 equal weight portions. What is the weight of the beans in each portion?

145. ## Evolution

Study the wings of the birds in the two images below. Which of the following words applies to only one of the wing structures represented in this pair of species? A. homologous B. developmental C. vestigial D. inherited I cannot post the pictures, but they

146. ## science

earth and the moon are kept in their respective orbits due to the influence of ? a) inertia b) gravity c) both inertia and gravity d) neither inertia and gravity

147. ## Math

Marsha hits a tennis ball upward from the top of a 90 foot high cliff with an initial velocity of 16 ft/s. Marsha hit the ball when it was 6 ft. above the top of the cliff. a. assume that the tennis ball will hit the ground below the cliff. Determine the

148. ## Physics

Tom the cat is chasing Jerry the mouse across a table surface 2.4 m oﬀ the ﬂoor. Jerry steps out of the way at the last second, and Tom slides oﬀ the edge of the table at a speed of 4.8 m/s. Where will Tom strike the ﬂoor? The acceleration of

149. ## MATH

2 3/4 + 1/12 = Give answer in its simplest form

150. ## Maths

Rewrite evaluate the followings 1. 32^4/5 2. 125^2/3 3. 1296^3/4 4. 243^4/5 5. 8^2/3 6. 27^2/3 7. 16^3/2 8. 625^5/4

151. ## physics

A capacitor has a circular plate of radiusr=12cm that are at a distance of .2cm part.this is hooked up to 12 V battery. if this caoacitor is submerged in water what happens to the capacitance?

152. ## algebra

Which choice is the equation of a line that passes through the point (–6, –2) and is perpendicular to the line represented by this equation? y = −3x + 1 A. 3x + y = 1 B. y = 1/3x C. y = −3x D. −3y = −x + 1 isn't the answer to this B, since the

153. ## Calculus

P(x) = 12x / (1-x) What are the critical points and where is P(x) increasing and decreasing?

154. ## Calc

Let F(x, y, z) = z tan−1(y^2)i + z^3 ln(x^2 + 10)j + zk. Find the flux of F across S, the part of the paraboloid x^2 + y^2 + z = 19 that lies above the plane z = 3 and is oriented upward. Thanks! STudying for a quiz... *tan−1 is tan^(-1)

155. ## Math

1 1/5 + 7/10 = Give answer in simplest form

156. ## Statistics

According to a study by the Centers for Disease Control, the national mean hospital stay after childbirth is 2.1 days. Reviewing records at her own hospital, a hospital administrator calculates that the mean hospital stay for a random sample of 81 women

157. ## Statistics

According to a study by the Centers for Disease Control, the national mean hospital stay after childbirth is 2.1 days. Reviewing records at her own hospital, a hospital administrator calculates that the mean hospital stay for a random sample of 81 women

158. ## Statistics

According to a study by the Centers for Disease Control, the national mean hospital stay after childbirth is 2.1 days. Reviewing records at her own hospital, a hospital administrator calculates that the mean hospital stay for a random sample of 81 women

159. ## Really need help in Calculus Problem?!

Use Euler's method with step size .2 to estimate y(.4), where y(x) is the solution of the initial value problem y=x+y^2, y=0. Repeat part a with step size .1

160. ## Math

2 7/12 + 1 2/3 = Give answer in simplest form

161. ## Math

3 7/10 - 1 2/5 = Give answer in simplest form

162. ## CALCULUS

Could someone please solve these four problems with explanations? I'd like to understand how to get to the answers. Thank you! Without using a calculator: For each of the following, find: I. lim x->a- f(x) II. lim x->a+ f(x) III. lim x->a f(x) A.

163. ## math

celeste hiked 1.8 miles in 0.75 hour. What is her average rate of speed?

164. ## physics

A firecracker in a coconut blows the coconut into three pieces. Two pieces of equal mass fly off south and west, perpendicular to each other, at 21m/s . The third piece has twice the mass as the other two. What is the speed of the third piece? What is the

165. ## science

must all tpopgraphic maps have a contour line that represents 0m of elevation explain

166. ## biology

Is their a relationship between strength and independent mobility? Can a spinal cord injury affect he body permanently?

167. ## chemistry

What is the mass of a small car in grams if its de Broglie wavelength is 4.198e-38 m when it is traveling at a velocity of 11.84 m/s ?

168. ## algebra

Which choice is the equation of a line that passes through the point (5, –1) and is perpendicular to the line represented by this equation? y = −x + 5 A. y = x− 6 B. 5x − y = 5 C. y = −x− 1 D. 2x− 5y = −1 can someone please show me how to

169. ## Informal logic

A conditional sentence with a false antecedent is always (Points : 1)

170. ## O Chem

In the laboratory process of isolating Eugenol from cloves via a steam distillation, extraction, drying, and final distillation what would be the best drying agent to use? Sodium Sulfate (Capacity=high Completeness=low rate=medium) or Magnesium

171. ## Spanish

1. ¿Tenías muchos juguetes cuando eras niña? No, sólo tenía dos: _______. A. un dinosaurio y una muñeca B. un oso y un columpio C. un pájaro y un tobogán D. un carrusel y una tortuga I said A 2. ¿Adónde van algunos niños antes de ir a la escuela

172. ## chemistry

Heisenberg's uncertainty principle can be expressed mathematically as Δx*Δp = h/4π, where Δx and Δp denote the uncertainty in position and momentum respectively and h is Planck's constant. What would be the uncertaintry in the position of a fly (mass

173. ## chemistry

Heisenberg's uncertainty principle can be expressed mathematically as Δx*Δp = h/4π, where Δx and Δp denote the uncertainty in position and momentum respectively and h is Planck's constant. What would be the uncertaintry in the position of a fly (mass

174. ## algebra 2

So I am doing my algebra home work and I get stuck on these three problems. x^2-19x+72 from there idk what to do because nothing multiplies up to 72 and adds up to -19. Same for this one. x^2-25x+48 And x^2+9-90 (X+15) (x-6)

175. ## Physics

an object is pushed horizontally by a 0.0840-kiloN force over a frictionless table. find the resulting acceleration

176. ## Chemistry

When excess NaOH is added to Zn(OH)2, the complex ion Zn(OH)4 2- is formed. Determine the molar solubility of Zn(OH)2 in .10 M NaOH. Compare with the molar solubility of Zn(OH)2 in pure water. I thought I knew how to do this problem, but I'm not getting

177. ## Physics

Tom the cat is chasing Jerry the mouse across a table surface 2.4 m oﬀ the ﬂoor. Jerry steps out of the way at the last second, and Tom slides oﬀ the edge of the table at a speed of 4.8 m/s. Where will Tom strike the ﬂoor? The acceleration of

178. ## algebra 2

So I am doing my algebra home work and I get stuck on these three problems. x^2-19x+72 from there idk what to do because nothing multiplies up to 72 and adds up to -19. Same for this one. x^2-25x+48 And x^2+9-90 (X+15) (x-6)

179. ## Physics

A ball is thrown horizontally from the top of a building 45.2 m high. The ball strikes the ground at a point 78.9 m from the base of the building. The acceleration of gravity is 9.8 m/s 2 . Find the time the ball is in motion, initial velocity, and x and y

180. ## Physics

How much force is needed to hold a nearly weightless but rigid 1-L carton beneath the surface of water?

181. ## Math

How would you write open intervals for concavity? After you find the second derivative of a !@#\$%^&tion; How would you go about finding the concavity

182. ## Math

(2-4i)-(-4+i)=

183. ## Physics

Calculate the water pressure at the bottom of the 100-m-high water tower

184. ## calculus

Use Euler's method with step size .2 to estimate y(.4), where y(x) is the solution of the initial value problem y=x+y^2, y=0. Repeat part a with step size .1

185. ## Criminal Justice

Which one of the following is NOT a method for developing invisible fingerprints during a crime scene search for evidence? A. Powders B. Rolling C. Chemicals D. Fuming is it B 2. Information obtained during an interview and recorded in an investigator's

186. ## Math

A football arena measures 100ft. wide by 200ft long.The games are played on a similar rectangular field that's 150ft. long. What is the width of the football field? What is the perimeter of the football field?