# Questions Asked onJanuary 26, 2011

1. ## physics

Suppose 3 mols of neon (an ideal monatomic gas) at STP are compressed slowly and isothermally to 0.19 the original volume. The gas is then allowed to expand quickly and adiabatically back to its original volume. Find the highest temperature attained by the

2. ## AP Calculus

Consider the curve given by x^2+4y^2=7+3xy a) Show that dy/dx=(3y-2x)/(8y-3x) b) Show that there is a point P with x-coordinate 3 at which the line tangent to the curve at P is horizontal. Find the y-coordinate of P. c) Find the value of d^2y/dx^2 (second

3. ## physics

Astronauts on our moon must function with an acceleration due to gravity of 0.170g . A. If an astronaut can throw a certain wrench 14.0 { m} vertically upward on earth, how high could he throw it on our moon if he gives it the same starting speed in both

4. ## Fluid Mechanics

it is estimated that it 90 percent of an iceberg's volume is below the surface, while only 10 percent is visible above the surface. for seawater with a density of 1025kg/m^3, estimate the density of the iceberg.

5. ## Astronomy

Suppose that future observations with a new telescope reveal a planet about 16 AU from a star whose mass is the same size as our sun's. How long does it take the planet to orbit the star?

6. ## physics

Two carts with masses of 15.5 kg and 1.0 kg, respectively, move in opposite directions on a frictionless horizontal track with speeds of 6.0 m/s and 2.0 m/s, respectively. The carts stick together after colliding head-on. Find the final speed of the two

Write formulas for the following. 1. potassium hexacyanoferrate(III) 2. sodium hexafluoroaluminate 3. Pentaaquabromomanganese(III) sulfate 4. hexaamminechromium(III) nitrate 5. sodium tetrahydroxochromate(III) 6.trans-dichlorobis(ethylenediamine)cobalt

8. ## Urgent!!! Physics

At an air show, a jet plane has velocity components Vx = 625 and Vy = 415 at time 3.85s and Vx = 838 and Vy = 365 at time 6.52s . A. For this time interval, find the x component of the plane's average acceleration in km/h2. B. For this time interval, find

9. ## physics

A typical sugar cube has an edge length of 1.0 cm. If you had a cubical box that contained 1.7 mol of sugar cubes, what would its edge length be? (One mole = 6.02 x 1023 units.) and A severe thunderstorm dumped 2.6 in of rain in 30 min on a town of area 32

10. ## chemistry

Before 1982 the US Mint cast penny coins from a copper and zinc mixture. If a 1980 penny weighs 3.051g and contains 0.153g zinc, what is the percent of copper in the coins?

11. ## physics

A spider crawling across a table leaps onto a magazine blocking its path. The initial velocity of the spider is 0.860 m/s at an angle of 33.6° above the table, and it lands on the magazine 0.0790 s after leaving the table. Ignore air resistance. How thick

12. ## math

greg exchanged 200 canadian dollars for 1/5 fewer u.s dollars. after spending 3/4 of the u.s dollars, how many did he have left?

13. ## math

five students make the following guesses on the number of jelly beans in a jar: 72, 78, 68, 60 and 84. the guesses were off by 14, 2, 4, 6 and 10 (not in order). how many jelly beans are in the jar?

14. ## physics

A daring 510 { N} swimmer dives off a cliff with a running horizontal leap, as shown in the figure below. What must her minimum speed be just as she leaves the top of the cliff so that she will miss the ledge at the bottom, which is 1.75 {m} wide and 9.00

15. ## Chemistry

A 0.75 L bottle is cleaned, dried, and closed in a room where the air is 20°C and 42% relative humidity (that is, the water vapor in the air is 0.42 of the equilibrium vapor pressure at 20°C). The bottle is brought outside and stored at 0.0°C. (See

16. ## math

A manufacturer of light bulbs knows that 3% of the production of their 60W bulbs will be defective. What is the probability that exactly 5 bulbs in a carton of 144 will ne defective?

17. ## Pre Calc

Dr. Black is standing 15 feet away from the street lamp. The lamp is making his shadow 8 feet long. The angle of elevation from the tip of the shadow to the tip of the streetlamp is 50 degrees. How tall is the streetlamp?

18. ## physics

A meterstick is held vertically above your hand, with the lower end between your thumb and first finger. On seeing the meter stick released, you grab it with those two fingers. You can calculate your reaction time from the distance the meterstick falls,

19. ## Physics

A severe thunderstorm dumped 2.0 in of rain in 30 min on a town of area 50 km^2. What mass of water (in kg) fell on the town? One cubic meter of water has a mass of 103 kg.

20. ## Chemistry

10. Cyclopropane is an anesthetic that is 85.6% carbon and 14.37% hydrogen by mass. What is the molecular formula of the compound if 0.45 L of cyclopropane reacts with excess oxygen at 120. °C and 0.72 atm to form a 1.35L of carbon dioxide and 1.35 L of

21. ## Chemistry

1. Write balanced equations for each of the following processes. a. Chromium- 51, which targets the spleen and is used as a tracer in studies of red blood cells, decays by electron capture. b. Iodine-131, used to treat hyperactive thyroid glands, decays by

22. ## physics

A child operating a radio-controlled model car on a dock accidentally steers it off the edge. The car's displacement 1.0 s after leaving the dock has a magnitude of 12.8 m. What is the car's speed at the instant it drives off the edge of the dock?

23. ## math

How to solve this??? The attendance at the game on two successive nights of Oakland A's baseball was 77,000. The attendance on Thursday's game was 7000 more than two thirds of the attendance at Friday nights game. How many people attended the baseball game

Nico is saving money for his college education. He invest some money at 8%, and \$1300 less than that amount at 5%. the investments produced a total of \$234 intrest in 1 yr.How much did he invest at each rate?

25. ## Literature

what is the author's purpose in "The Sniper?

26. ## statistics

The numbers of hours of life of a torch battery is normally distributed with a mean of 150 hours and standard deviation of 12 hours. In a quality control test, two batteries are chosen at random from a batch. If both batteries have a life less than 120

27. ## STUDY UNIT: THE PRINTED WORD

Which one of the following items would be most likely to have a list of chapter titles? A. A magazine B. A novel C. A newspaper D. An article

28. ## Algebra

A coffee manufacturer wants to market a new blend of coffee that will sell for \$3.90 per pound by mixing two coffees that sell for \$2.75 per pound and \$5 per pound, respectively. What amounts of each coffee should be blended to obtain 100 pounds of the

29. ## physics

(a) Assuming that each cubic centimeter of water has a mass of exactly 1 g, find the mass of 3.76 cubic meter of water in kg. (b) Suppose that it takes 10.4 hours to drain a container of 59.1 m^3 of water. What is the “mass flow rate,” in kg/s, of

30. ## Statistics

9. It is thought that prehistoric Indians did not take their best tools, pottery, and household items when they visited higher elevations for their summer camps. It is hypothesized that archaeological sites tend to lose their cultural identity and specific

31. ## Math

The highest dive in the Olympic Games is from a 10-meter platform. The height "h" is in meters of a diver "t" seconds after leaving the platform can be estimated by the equation, h=10+4.9t-4.9t^2 I don't know how to make a successful table for this. I

32. ## physics

A 55.0-kg skydiver free falls for a period of time before opening his parachute. What is his kinetic energy when he reaches a velocity of 16.0 meters/second?

33. ## physics

Gold, which has a density of 19.32 g/cm^3, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber. (a) If a sample of gold with a mass of 6.710 g, is pressed into a leaf of 1.661 μm thickness, what is the area (in

34. ## Chemistry

If 57j of heat are added to an aluminum can with a mass of 17.1g, what is its temperature change?

35. ## Pre-Algebra

solve for m 2/3m - 5 = n

36. ## physics

A brick is released with no initial speed from the roof of a building and strikes the ground in 1.50 {s}, encountering no appreciable air drag. A. How tall, in meters, is the building? B.How fast is the brick moving just before it reaches the ground?

37. ## chemistry

suppose you have two 1-L flasks one containing N2 at STP the other containg CH4 at STP how do these systems compare with respect to a)number of molecules B)density c)average kinetic energy of the molecules d)rate of effusion through a pinhole leak?

38. ## Physics Help!

A 2.2 kg mass is attached to a spring with a force constant of 560 N/m on a smooth horizontal surface. The mass is pulled to one side, released, and allowed to oscillate back and forth. (a) find the maximum compression and expansion of the spring if the

39. ## physics

A bottle with a volume of 180 U. S. fluid gallons is filled at the rate of 1.6 g/min. (Water has a density of 1000 kg/m^3, and 1 U.S. fluid gallon = 231 in.^3.) In years, how long does the filling take?

40. ## Statistics

7. A random sample of n1 = 16 communities in western Kansas gave the following rates of hay fever per 1000 population for people under 25 years of age. 121 115 124 99 134 121 110 116 113 96 116 116 135 96 96 116 A random sample of n2 = 14 communities in

41. ## math

In 1626,Peter Minuit of the Dutch West India Company purchased Manhattan Island from Native Americans for \$24. Assuming an exponential rate of inflation of 6% per year,how much will Manhattan be worth in 2010?

42. ## physics

A major leaguer hits a baseball so that it leaves the bat at a speed of 31.5 and at an angle of 36.1above the horizontal. You can ignore air resistance. At what two times is the baseball at a height of 8.00 above the point at which it left the bat?

43. ## ut

The density of an unknown metal is 8.94 g/cm^3 and its atomic radius is 0.126 nm. It has a face-centered cubic lattice.

44. ## physics

A new "D" battery has an emf of 1.5 V. When a wire of negligible resistance is connected between the terminals of the battery, a current of 25 A is produced. Find the internal resistance of the battery. ________ Ω

Nico is saving money for his college education. He invest some money at 8%, and \$1300 less than that amount at 5%. the investments produced a total of \$234 intrest in 1 yr.How much did he invest at each rate?

46. ## MATH

Two planes leave an airport at the same time, one flying east, the other flying west.The eastbound plane travels 100 mph slower. They are 3040mi apart after 4hrs. find the speed of each plane

47. ## law

How does the United States deal with problems related to civil order control?

48. ## physics

A severe thunderstorm dumped 2.0 in of rain in 30 min on a town of area 50 km^2. What mass of water (in kg) fell on the town? One cubic meter of water has a mass of 103 kg.

49. ## physics

The nine Ring Wraiths want to fly from Barad-Dur to Rivendell. Rivendell is directly north of Barad-Dur. The Dark Tower reports that the wind is coming from the west at 52 miles per hour. In order to travel in a straight line, the Ring Wraiths decide to

50. ## Statistics

5. Benford's Law claims that numbers chosen from very large data files tend to have "1" as the first nonzero digit disproportionately often. In fact, research has shown that if you randomly draw a number from a very large data file, the probability of

51. ## Statistics

6. Benford's Law claims that numbers chosen from very large data files tend to have "1" as the first nonzero digit disproportionately often. In fact, research has shown that if you randomly draw a number from a very large data file, the probability of

52. ## Math

Please help me with this problem. In 1626,Peter Minuit of the Dutch West India Company purchased Manhattan Island from Native Americans for \$24. Assuming an exponential rate of inflation of 6% per year,how much will Manhattan be worth in 2010?

53. ## Physics

0.490 mol of argon gas is admitted to an evacuated 50.0 cm^3 container at 60.0 C. The gas then undergoes an isochoric heating to a temperature of 400 C. What is the pressure?

54. ## math

7, 49, 343, 2401 Write an algebraic expression that will represent the nth term of the sequence.

55. ## Social Psychology

Describe the reciprocal relationship between behavior and attitudes?

56. ## physics

A 200-m-wide river flows due east at a uniform speed of 4.9 m/s. A boat with a speed of 9.0 m/s relative to the water leaves the south bank pointed in a direction 33o west of north. What is the (a) magnitude and (b) direction of the boat's velocity

57. ## physics

A brick is released with no initial speed from the roof of a building and strikes the ground in 1.50 {s}, encountering no appreciable air drag. A. How tall, in meters, is the building? B.How fast is the brick moving just before it reaches the ground?

58. ## science

how is water purified in the water cycle? why is the sun so important in the water cycle? what role does evaporation play in the water cycle? thanks!!!! :)

59. ## Algebra

The purity of gold is measured in karats. Twenty-four karat gold is pure gold and k karat gold is k/24 gold by mass. One piece of 16-karat gold jewelry has a mass of 30 grams and another piece of 10-karat gold jewelry has a mass of 40 grams. Find the

60. ## Math

Solve for w V= lwh

61. ## physics

Water leaves the fireman's hose at rate of 7.2 kg/s and with a velocity of 21 m/s. Calculate the force exerted by the water jet on the wall of a building.

62. ## math

A manufacturer of light bulbs knows that 3% of the production of their 60W bulbs will be defective. What is the probability that exactly 5 bulbs in a carton of 144 will ne defective? Did not understand the posted answer before, need it simplified.

63. ## Statistics

8. It is thought that prehistoric Indians did not take their best tools, pottery, and household items when they visited higher elevations for their summer camps. It is hypothesized that archaeological sites tend to lose their cultural identity and specific

64. ## Statistics

10. It is thought that prehistoric Indians did not take their best tools, pottery, and household items when they visited higher elevations for their summer camps. It is hypothesized that archaeological sites tend to lose their cultural identity and

65. ## math

On July 1, 1996, Anna invested \$2000 in an account that earned 6%/a compounded monthly. On July 1, 2001, she moved the total amount to a new account that paid 8%/a compounded quarterly. Determine the balance in her new account on January 1, 2008.

How does the author's attitude toward her name change over the course of "Newcomers in a Troubled Land"? Support your answer with evidence from the selection.

67. ## physics

At some instant the velocity components of an electron moving between two charged parallel plates are vx = 1.5 × 105 m/s and vy = 3.0 × 103 m/s. Suppose the electric field between the plates is given by In unit-vector notation, what are (a) the

68. ## Math

The total number of DVD videos produced and shipped in 1998 was .5 million. In 2004,the total number of units reached 29.01 million. Assuming the exponential model applies: a)Find the value of k and write the function b) Estimate the number of DVD videos

69. ## Algebra

What is the probability that a randomly selected three-digit number is divisible by 5? Express answer as a common fraction.

70. ## math

fifteen out of 25 students in Mrs. Smith's class are boys. what is the ratio of boys to girls? i put 1 to 6. is that right?

71. ## Math

A class has 12 students. In how many different ways can the students be put into lab groups consisting of 3 students in each group. The answer in the book is 369600. But I do not understand how they got this answer.

72. ## Math

Lois invests \$650 every 6 months at 4.6%/a compounded semi-annually for 25 years. How much interest will she earn after the 25th year?

73. ## Algebra 1

Two sides of a triangle have the same length. The remaining side is one third as long as each of the other sides. If the perimeter of the triangle is 315 cm, what is the length of each side?

74. ## Algebra

You have a piggy bank containing a total of 85 coins in dimes and quarters. If the piggy bank contain \$14.50, how many dimes are there in the piggy bank? Interest=principal multiply Rate multiply 1, or interest=principal multiply rate.

75. ## physics

Figure shows an overhead view of a 0.026 kg lemon half and two of the three horizontal forces that act on it as it is on a frictionless table. Force F1 has a magnitude of 4 N and is at ¥è1 = 27¢ª. Force F2 has a magnitude of 6 N and is at ¥è2 =

76. ## Math

Cliff has some money he wants to invest for his retirement. He is offered two options: 10%/a simple interest or 5%/a compounded annually. Under what conditions should he choose the first option

77. ## math

how many pieces of ribbon each 4.5 cm long can be cut from alength of 4 and a half metres?

78. ## physics

The speed of light in a certain material is 1.6 × 108 m/s. Express the speed of light in (a) feet per nanosecond (ft/ns) and (b) millimeters per picosecond (mm/ps).

79. ## physics

A 1.90-kg object is attached to a spring and placed on frictionless, horizontal surface. A horizontal force of 14.0 N is required to hold the object at rest when it is pulled 0.200 m from its equilibrium position (the origin of the x axis). The object is

80. ## physics

A 59.0-Ω resistor is connected in parallel with a 116.0-Ω resistor. This parallel group is connected in series with a 15.0-Ω resistor. The total combination is connected across a 15.0-V battery. (a) Find the current in the 116.0-Ω resistor. _______ A

81. ## physics

The speed of light in a certain material is 1.6 × 108 m/s. Express the speed of light in (a) feet per nanosecond (ft/ns) and (b) millimeters per picosecond (mm/ps).

82. ## algebra

what is the percent of change from \$48.50 to \$38.80

83. ## Physics

An organ pipe open at both ends has a harmonic with a frequency of 480 Hz. The next higher harmonic in the pipe has a frequency of 540 Hz. Calculate the frequency of the fundamental and the length of the pipe. I know 540/480 is 9/8. I have no idea where to

84. ## Chemistry

is fumaric acid polar or non-polar?

85. ## physics

Suppose all of the apples have a mass of 0.10 kg. If one of the apples in the bowl (C) is 1.0 meter above the ground, what is its potential energy?

86. ## Physics help

a pendulum bob with a mass of 0.13 kg is attached to a string with a length of 0.95 m. we choose the potential energy to be zero when the string makes an angle of 90 degrees with the vertical. (a) find the potential energy of this system when the string

87. ## Physics

a pendulum bob with a mass of 0.13 kg is attached to a string with a length of 0.95 m. we choose the potential energy to be zero when the string makes an angle of 90 degrees with the vertical. (a) find the potential energy of this system when the string

88. ## chemistry

If a solution contains 255ml of ethanol in a 375 ml solution, what is the % of ethanol in that solution?

89. ## chemistry

What are the number of atoms of nitrogen in 10g of N2H4?

90. ## pennfoster edu.

an overgarment worn with, and slightly shorter than, a straight skirt is called a?

91. ## physics

A 5.50 104 kg space probe is traveling at a speed of 11000 m/s through deep space. Retrorockets are fired along the line of motion to reduce the probe's speed. The retrorockets generate a force of 4.00 105 N over a distance of 2600 km. What is the final

92. ## Precalc

how to solve for x: 500e^(0.3x) = 600 Steps please.

93. ## math

Could you divide 14 shirts into two equal groups? why or why not

94. ## chemistry

How many grams of each substance are needed to prepare th e following solutions? 50.0 ml of 8.0%(w/v)KCL

95. ## Algebra

Two trans leave Chicago going opposite directions, one going north and the other going south. The northbound train is traveling 12 mph slower than the southbound train. After 4 hours the trains are 528 miles apart. Find the speed of each train. I would

96. ## physics

An 82 kg man lowers himself to the ground from a height of 6.6 m by holding onto a rope that runs over a frictionless pulley to a 66 kg sandbag. With what speed does the man hit the ground if he started from rest?

97. ## Urgent!!! Physics

A meteor streaking through the night sky is located with radar. At point A its coordinates are (5.60 km, 1.25 km), and 1.12 s later its has moved to point B with coordinates (6.16 km, 0.900 km). A. Find the x component of its average velocity between A and

98. ## physics HELP

A 7450 kg satellite has an elliptical orbit, as in Figure 6.9b. The point on the orbit that is farthest from the earth is called the apogee and is at the far right side of the drawing. The point on the orbit that is closest to the earth is called the

99. ## physics

Multiple-Concept Example 9 discusses the physics principles used in this problem. Three resistors, 2.2, 3.9, and 6.4 Ω, are connected in series across a 24-V battery. Find the power delivered to each resistor. resistance (Ω) power (W) 2.2 ______ 3.9

100. ## physics

The Pacific Crest Trail runs from the Mexican border to the Canadian border through California, Oregon, and Washington,covering 2650 miles of trail, but only about 1000 straight-line miles. B).If you hike this trail in 14.0 weeks, from Mexico to

101. ## Statistics

4. Let X be a random variable representing dividend yield of Australian bank stocks. We may assume that x has a normal distribution with A random sample of 19 Australian bank stocks has a sample mean of For the entire Australian stock market, the mean

102. ## spanish

vas a la clase de ingles en la manana o en la tarde?

103. ## economics

. Suppose you are a stock market analyst specializing in the stocks of theme parks, and you are examining Disneyland’s stock. The Wall Street Journal reports that tourism has slowed down in the United States. At Six Flags Magic Mountain in Valencia,

104. ## Business Computer Information Systems

When you proofread look for punctuation, spelling and Capitalization Mistakes. is this punctuated correctly?

105. ## trigonometry. Math

In a triangle PQR, angle Q=50 degrees,PR=5CM, QR=4CM. find angle P?

106. ## ChemistryDrBob222

Arrows disappeared from below added them back to the equations. The decomposition of IBr(g)into I2 (g) and Br2 (g) is first order in IBr with k = 0.00255/sec. (a)Starting with [IBr] = 1.50M, what will [IBr] become after 2.50 minutes? (b)How long, in

107. ## algebra

British sterling silver is a copper-silver alloy that is 7.5% copper by weight. How many grams of pure copper and how many grams of British sterling silver should be used to prepare 170 grams of a copper-silver alloy that is 16% copper by weight?

108. ## Geometry

Two of the sides of a triangular lot have lengths of 90 feet and 80 feet. If the angle opposite the 80-foot side is 59°, what is the length of the third side of the lot to the nearest tenth of a foot?

109. ## Chemistry 1200

Freezing-point depression can be used to determine the molecular mass of a compound. Suppose that 1.28 g of an unknown molecule were added to 19.9 g of water and the freezing point of the solution determined. If the new freezing point of water were found

110. ## physics help!!

A 5.50 104 kg space probe is traveling at a speed of 11000 m/s through deep space. Retrorockets are fired along the line of motion to reduce the probe's speed. The retrorockets generate a force of 4.00 105 N over a distance of 2600 km. What is the final

111. ## Physics

A hydrometer is an instrument for measuring the specific gravity of a liquid. For example, producers of maple syrup use the hydrometer to find how much sugar is in the collected sap. Markings along a stem are calibrated to indicate the specific gravity for

112. ## calculus

What is the average rate of change of y=4x^3 over the interval P(1, 4) and Q(5, 500)?

113. ## math

niran has 72 centimeters of molding to make a frame for a print. this is not enough molding to frame the entire print.How shouldhe cut the molding to give the largest possible area for the print using the inside edge of the molding as the perimeter?

114. ## trig

a plane is flying at an altitude of x with the distance at 800 meters with an angle of 70 degress. what equation would you use to solve. tan70= x/800 tan70= 800/x sin70= x/800

115. ## math

how long will it take to earn 525\$ in interest if \$3500 is invested at a 6% annual interest rate?

116. ## physics

Mechanical energy is the difference between the kinetic and potential energies of an object true or false?

117. ## math

On Monday afternoon, Andrew rowed his boat with current for 4.5 hours and covered 27 miles, stopping in the evening at a campground. On Tuesday morning he returned to his starting point against the current in 6.75 hours. Find the speed of the current and

118. ## Social Studies

The First Amendment does not guarantee absolute freedoms or rights Why?

119. ## Physics

A man with mass m =96.4 kg (weight = 212.1 lbs is walking towards a patio at 2.00 m/s (4.47 mph) when, at the last moment, he realizes the sliding glass door is closed. He puts out his hand suddenly to stop himself, and comes to a halt in 90.0ms. Find the

120. ## physics

Suppose all of the apples have a mass of 0.10 kg. If one of the apples in the bowl (C) is 1.0 meter above the ground, what is its potential energy?

121. ## physics

Suppose all of the apples have a mass of 0.10 kg. If one of the apples in the bowl (C) is 1.0 meter above the ground, what is its potential energy?

122. ## ChemistryDrBob222

Arrows disappeared from below added them back to the equations. ??(a) I don't understand ln(No/N)=akt The decomposition of IBr(g)into I2 (g) and Br2 (g) is first order in IBr with k = 0.00255/sec. (a)Starting with [IBr] = 1.50M, what will [IBr] become

123. ## math

a paint color is made by mixing red and yellow paint. the ratio of red to yellow is 4 to 9. how many quarts of yellow paint must be used for 12 quarts of red? explain how you find your answer.

124. ## trigonometry plz explain.

Which way is done correctly and why ?? Express the following in degrees,minutes, and seconds: (1)4 --> (180/pi)*4 = 229.18312 229.18312 = 229 + (0.18312*60) = 229 degrees + 10.9872' = 229 deg 10' + (0.9872*60)" = 229 deg 10' + 59.2" or (2)4*180/pi =

125. ## Math

For this problem, assume the balls in the box are numbered 1 through 8, and that an experiment consists of randomly selecting 2 balls one after another without replacement. What probability should be assigned to the event that at least one ball has an odd

126. ## Algebra II-Please check calcs

Could someone check this matrix calculation The first matrix dimension is 1 by 3 row 1 = 1 row 2 = 7 row 3 =3 Second matrix is 1 by 3 Row 1 column one =2 row 1 column two = -5 row one column three = 5 my calculation is that it would be the dimensions of 3

127. ## science

an electron is released into a uniform electric field of magnitude 1.5 x 10^3 N/C. Calculate the acceleration of the electron, neglecting gravity. I know that if a charge is released in the electric field, it experiences a force and accelerates, gaining

128. ## espaniolII

Por primera, tú necesitas cambiar los hábitos. Si tú trabajas mucho para tener una buena dieta, va a hacer mas feliz también. Es tan difícil para mantener una vida saludable. Es esencial que no comas comida basura y hacer ejercicios todos los dias.

129. ## Math

For the equation y = -6x, what is the slope and y intercept? The formula is y = mx + B. I know that m = the slope and B = the y intercept. So in the equation y = -6x, what is the slope and y intercept? Is -6 the y intercept or the slope? Because if it's

130. ## Chemistry

Given the reaction system; 2 NO (g) + O2 (g) -> 2 NO2 (g) Write a brief explanation for each of the following statements in terms of the collision model and/or reactions mechanisms. (1)Increasing the concentration of NO (g)makes the reaction go faster.

131. ## ALGEBRA

A cube has a volume of 64 cubic units. How many units are in the sum of the lengths of all it's edges?

132. ## Math

On July 1, 1996, Anna invested \$2000 in an account that earned 6%/a compounded monthly. On July 1, 2001, she moved the total amount to a new account that paid 8%/a compounded quarterly. Determine the balance in her new account on January 1, 2008.

133. ## english

only five days later, the child itch rash had almost completely disappeared which word is the simple subject in the sentence above? a) five b) days c) Childs d) rash

134. ## geometry

Find the area of the smaller segment whose chord is 8" long in a circle with an 8" radius. (3.14) A=( pie - / )inches^2 please help me i don't understand this problem

135. ## Chem 1200

Freezing-point depression can be used to determine the molecular mass of a compound. Suppose that 1.28 g of an unknown molecule were added to 19.9 g of water and the freezing point of the solution determined. If the new freezing point of water were found

136. ## statistics

From past experience it is felt that the random variable, X, the age of a mother at the birth of her first child, is normally distributed with a mean of 21.3 and a variance of 16. Find the probability that a randomly selected mother: (a) has her first

137. ## geometry

When finding the perimeter of a figure on a grid,whydo you not count the spaces inside tha grid?

138. ## chemistry

What is the nuber of grams of oxygen present in 4.50 x 10^22 SO3 moleucles?

139. ## History

Describe an advantage of havinf federal judges appointed rather then elected

140. ## Math-Algebra II

How would you interpret the findings of a correlation study that reported a linear correlation coefficient of − 1.34? The only thing I know is that it represents a negative correlation. Please shed any light you can.

141. ## Finance

If a firm had operating profits of 100,000 taxes of 17,000 interest expense of 34,000 and preferred dividends of 5,000. What was the firms net profit after taxes

142. ## statistics

The owner of a bottling company is considering buying a new bottling machine. He has been testing two different machines that are being considered. After collecting 300 samples from each machine over several weeks, he was able to conduct a two sample z

143. ## physics

Airplane flight recorders must be able to survive catastrophic crashes. Therefore, they are typically encased in crash-resistant steel or titanium boxes that are subjected to rigorous testing. One of the tests is an impact shock test, in which the box must

144. ## College English

Read the sentence below. Then, choose the correct combination of antecedents and pronouns. “The aliens may also implant tiny metal tracking devices in the bodies of these abductees so that they can locate them easily in the future.” A. They replaces

145. ## pythagrean theorem

A rectangle is 6m. wide and 11m long. How long is the diagonal of the rectangle?

146. ## Algebra 1

Two sides of a triangle have the same length. The remaining side is one third as long as each of the other sides. If the perimeter of the triangle is 315 cm, what is the length of each side?

147. ## geometry

the lateral edge of side 12 makes an angle of 30 degrees with the base, what is the altitude of the square prism?

148. ## physics

A 7.9 kg object undergoes an acceleration of 2 m/s2. What is the magnitude of the resultant force acting on it? Answer in units of N.

149. ## Algebra 1

A rectangular piece of art is 4 meters wide and 6 meters long. It is surrounded by a uniform sidewalk. If the area of the uniform sidewalk is 39 square meters, how wide is the sidewalk

150. ## Chemistry

The vapor pressure of water at 25°C is 23.76 mm Hg. What would you calculate as the new vapor pressure of a solution made by adding 50.5 g of ethylene glycol (HOCH2CH2OH, antifreeze) to 50.5 g of water? You may assume that the vapor pressure of ethylene

151. ## chemistry

How would you caculate this problem: What is the mass in grams of 150*10^12 iron atoms, each having a mass of 56 amu?

152. ## Statistics

3. Let X be a random variable representing the dividend yield of Australian bank stocks. We may assume that X has a normal distribution with Now, suppose we wish to test the null hypothesis that against the alternative that using a level of significance of

153. ## Drwls[SCIENCE]

Asthenosphere can act like a viscous liquid right? Is lithosphere part of the crust, or just part of the mantle? The core is the most solid part within the earth right? P-waves can travel through all the layers, except for S-waves right? Also What really

154. ## physics

a ball is thrown at an original speed of 8.0 m/s at an angle of 35 degrees above the horizontal. What is the speed of the ball when it returns to the same horizontal level?

155. ## History

Briefly can you tell me, What social, political, and economic changes and advances occurred during the Roaring Twenties?

156. ## Math

Select three (3) coins, but assume that there are 4 dimes, 4 nickels, and 2 quarters. In how many possible ways can the selection be made so that the value of the coins is at least 25 cents?

157. ## Espanol III

I am writing a composition for class and need someone to peer edit. No one around knows spanish so I am hoping someone here would be willing to look over it :) Thank you! Por primera, tú necesitas cambiar los hábitos. Si tú trabajas mucho para tener una

158. ## physics

A 55.0-kg skydiver free falls for a period of time before opening his parachute. What is his kinetic energy when he reaches a velocity of 16.0 meters/second?

159. ## Math

For the equation y = -6x, what is the slope and y intercept? The formula is y = mx + B. I know that m = the slope and B = the y intercept. So in the equation y = -6x, what is the slope and y intercept? Is -6 the y intercept or the slope? Because if it's

160. ## math

sam earned \$4,000 from his business. he gave 1/5 of it to his son and daughter in law as a gift. he invested 1/2 of the remaining amount. how much did he have left?

161. ## physics

an astronaut floating in space is separated from his ship. his mass in 85.0kg and he is 10.0m from ship. he throws a wrench moss is .8000kg opposite direction with a velocity of 20m/s. how long will it take him to reach the ship?

162. ## math

ivested \$1,500 in the stock market on january 1, she lost 1/3 of it by the end of january and 2/5 of the remaininbg amount by the end of february. how nmuch did she have left?

163. ## chemistry

What is the volume, in mL of .089 m lithium chloride (LiCl) solution containing 4.3g of LiCl???

164. ## Algebra 1

Write an equation of the line containing the given point paralled to the given line (-8,6);2x=3y+4 Thank you

165. ## 5th math

Jackie ran 4 Miles in 28.5 minutes Which equation could be used to determine the average number of minutes it took jackie to run Each mile(k)? k-4=28.5 or k+3=28.5 or k/3=28.5 or 4k=28.5 can you tell me which one is the right equation?

166. ## English 11

Type a character sketch of a fictional Southern Gentleman named Alphonzo Carteret, following the instructions given for the character sketch of the Puritan above.

167. ## chem

Using the values given, calculate the amount of heat that is liberated when a 2.7-kg bucket of steam at 100.0°C is cooled to give a 2.7-kg bucket of water at 28.0°C. (Condensing steam has −ÄvapH = −2440 J/g and cooling water has cliq = 4.184

168. ## physics

In February 2004, Austrian physicists measured two events (having to do with the behavior of electrons) separated by the shortest time interval ever measured, 100 attoseconds. How far would light travel in this time interval? (1 attosecond = 10^{-18}

169. ## Biology!!

The lifespan of plants varies depending on genetics and survival strategies. Discuss the adaptive value of annual, biennial, and perennial life spans.

170. ## Medical Information Management and Office Practice

Please check my answers. 1.Dr. Jones used an abbreviation that no one was familiar with. What can be done to prevent this from happening in the future? A. Ask the physician to take a course on medical abbreviations. B.Designate an approved abbreviations

171. ## Math (Pre-cal)

I can't seem to figure this out. A ship leaves at noon and travels due West at 20 knots. At 2:00 it changes to N54°W...Find the bearing and the distance FROM port at 3:00 pm. I've looked at this program for a while but can't figure it out.

172. ## math

How could knowing that 35/7 equal 5 help you find 42/7 explain

173. ## math

If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together? This the ans 2 hours and 24 minutes but how did they work it out?

174. ## math

The masses of newborn children are normally distributed with a mean of 3.4 kg and a standard deviation of 0.8 kg. A newborn is at risk if the baby'd mass falls in the lowest 4%. These babies have a mass of less than ____?

175. ## English IV

I'm have a hard time with this project. Based on the restoration and the 18th century, I have to write a prose satire aimed at changing the attitude of my audience. Please help!!!

176. ## math

A can of lemonade concentrate has a capacity of 355 mL. The concentrate is mixed with 4 cans of water. a) how much lemonade is made? b) how many 200-mL glasses can be poured?

177. ## spelling

i need sentns for join

178. ## Algebra 1

In 1920 the record for a certain race was 45.1 sec. In 1960, it was 44.3 sec. Let R(t)= the record in the race t= the number of years since 1920. Thank you for your help

179. ## physics

Water is poured into a container that has a leak. The mass m of the water is given as a function of time t by m = 4.8t^0.8 - 2.9t + 21, with t ≥ 0, m in grams, and t in seconds. (a) At what time is the water mass greatest, and (b) what is that greatest

180. ## Algebra 1

Find an equation of the line containing the given pair of points. (1/4,-1/2) and (3/4,5). What is the equation of the line? y= Thank you for all your help.

181. ## chem

determine the osmotic pressure of the solution at STP. (Assume these solutions behave ideally.) a)0.116 mol fraction glucose (C6H12O6) in water (Assume the density of the solution is 1.02 g/mL.) b)0.0948 mol fraction NaCl in water (Assume the density of

182. ## algebra

From her house, Mary travels to New York at an average rate of 50 miles per hour and then returns home at an average rate of 32 mph. After taking 2 hours longer on the return trip than the time it took her to get to New York,she finds that she still has 17

183. ## physics

Mechanical energy is the difference between the kinetic and potential energies of an object true or false?

184. ## Algebra

Write an equation of the line containing the given point and paralled to the given line. Express your answer in the form y-mx+b (4,7); x+ 3y=8. The equation of the line is y=? Thank you

185. ## Math

what is the next number with 2x2x2x2x2x5 as factorization

186. ## Algebra 1

In 1920 the record for a certain race was 45.1 sec. In 1960, it was 44.3 sec. Let R(t)= the record in the race t= the number of years since 1920. Thank you so much

187. ## math

how do you find out the perimeter and the area of a parollelogram in a short cu way in a centimeter grid paper?

188. ## Physics

At liftoff, a rocket has a mass of 2x10^6 kg. It expels hot gas which provides an upthrust of 3x10^7. Find the initial accelerating of the rocket.

189. ## Chemistry

The following data is collected for the decomposition of methy isonitrile at various tempertures: Temp.(C)---{k(/s)} --- lnk---1/T 290--- {2.52*10^-5}--- ?--- ? 299--- {5.25*10^-5}--- ? --- ? 330--- {6.30*10^-4}--- ?--- ? Complete the table above and,

190. ## math

2. Let X be a random variable representing the dividend yield of Australian bank stocks. We may assume that X has a normal distribution with Now, suppose we wish to test the null hypothesis that against the alternative that using a level of significance of

191. ## math

arraange the following numbers in order from least to greatest:2 1/4, 0.6, 2.75, 40%, 7/5

192. ## physics

how can i plan and design a lab to investigate how electric current causes contraction of a spiral wire spring

193. ## geometry

If a pentagon has a side of 140, how many inches is the rest of the side?

of the third graders who were asked, 2/5 like pizza the best, 3/15 like hamburgers the best, and 18 like macaroni the best. How many third graders were asked their favorite food?

195. ## space car

design a car for astronauts to drve in outer space

196. ## UNO

A blood sample contains several different types of cells, each of which contains different combinations of specific ions and molecules. The cells are suspended in water, and the water also contains many molecules and ions. Which term or terms could be used

37.8 degrees

198. ## Algebra 1

Write a equation of the line containing the given point and paralled to the given line (-5,8);3x=5y+2

199. ## science

Does the mass of water increase when a plastic water bottle filled to the brim with water is frozen?

200. ## Physics

Hello, I have e problems with dis question A harmonic wave on a string moves along the x-axis according to: (x,t) =5.0 (cm) sin[ (2.5m^-1) x - (63s^-1) t ] At x = 1.0 m when t = 2.2 s the speed of the oscilations on the string is closest to ... me thought

201. ## physics

is a neon light a fluid?

202. ## english

Christina and Christopher worked together and completed a project about astronomy.

203. ## socisl studies

name one cause of the french and indian wars name 2 results of the french and indian wars

204. ## Physics

I have a rubber ball. Its diameter is 5.16 cm. Its density is 1.5 Mg/m^3. I need to find its weight in US units. I know to use w=pVg I am coming out with the wrong answer though. Can someone help?

205. ## Math

A recipe calls for 4 1/2 cups of flour for 72 cookies. How many cups of flour would be needed for 48 cookies?

206. ## Chemistry

The following data is collected for the decomposition of methy isonitrile at various tempertures: Temp.(C)---{k(/s)} --- lnk---1/T 290--- {2.52*10^-5}--- ?--- ? 299--- {5.25*10^-5}--- ? --- ? 330--- {6.30*10^-4}--- ?--- ? Complete the table above and,

207. ## Physics

The coefficient of static friction between a block and a horizontal floor is 0.42, while the coefficient of kinetic friction is 0.17. The mass of the block is 3.9 kg. If a horizontal force is slowly increased until it is barely enough to make the block

208. ## chemistry

Before 1982 the US Mint cast penny coins from a copper and zinc mixture. If a 1980 penny weighs 3.051g and contains 0.153g zinc, what is the percent of copper in the coins?

209. ## English

What is Protagonist in the sniper?

210. ## algebra

8% of(n+2)equals 12. What is n?

211. ## chemistry

What is the volume, in mL of .089 m lithium chloride (LiCl) solution containing 4.3g of LiCl???

212. ## physics

what is the formula to calculate the following: how much force is needed to move a 10 pound block 10 feet in 8 seconds>

213. ## 5th math

What is the measure of each side of a square with a perimeter of 60 inches? this one I'm total lost . please ! show me how you do this problem. thank you!!

214. ## Chemistry

After removing a crucible (containing CaCO3 obtained as a precipitate) from an oven, what could you do (if you were being extremely careful and had enough time) to prove that the CaCO3 is dry?

215. ## math

what number has 5 hundreds and 12 tens

have the answer and would love confirmation. VERY APPRECIATED! Find the LCM OF (1+2t), (1-4t^2), and (1-2t). 1-4t^2=(1+2t)(1-2t) 1+2t = 1+2t 1-4t^2= (1+2t)(1-2t) 1-2t = 1 - 2t. The LCM for all numbers is 1-4t^2 = (1+2t)(1-2t) Thank you

217. ## religion 110

How might modern religion benefit from indigenous religious?

218. ## math

The question says .. match the equivalent addition and subtraction expressions a) -6 -9 b)-10 - (-12) c)6-9 d)10-12 e)-12-10 A)10+(-12) B)-6+(-9) C)-12 + (-10) D)6+(-9) E)-10+12

219. ## math

The question says .. match the equivalent addition and subtraction expressions a) -6 -9 b)-10 - (-12) c)6-9 d)10-12 e)-12-10 A)10+(-12) B)-6+(-9) C)-12 + (-10) D)6+(-9) E)-10+12

220. ## Math

Suppose f(n+1)/f(n)= n for all positive integers of n. If f (1)=1, find the numerical value of f(6). How do i figure out this?

221. ## Algebra II

What would make this statements False? The opposite of each natural number is a natural number. There is no whole number that has an opposite that is a whole number.

222. ## Precalc

how to solve 5(2^(3x)) = 8 Steps too please answer is ln 1.6 / 3 ln 2

223. ## Organic Chem

1. what is the monomeric unit of a chain of molecules joined by peptide bonds? Is the answer glycine? 2. Write the equation for the addition of hydrochloric acid to ethene. What is the name of the product formed? C2H4 + HCl -------> ??? Any help with any

224. ## science

You are designing a scale model of the solar system mercury it is 4,878 km in diameter.using the following scale factor, how large does your model of mercury need to be? A. 160cm B. 16cm C.146cm D.30cm

225. ## English

I had duplicate bookings on Cebu Pacific air. com because of a problem on the Internet. I'd like to cancel one booking. How can I cancel one booking. Only one adult and a baby are going to get on the air plane. And please let me know how to pay the plane

226. ## ELA

i need 5 sentences with simile metaphor personification and useing these spelling words studious zealous luxurious miraculous joyous

227. ## math

Find the x-intercept 3x-5y=14y+9x I think y=0 but 3x=9x does not make sense to me. Please help me. Thank you.

228. ## English

Are the following sentences possible? Thank you very much. 1) He shot me in the leg. 2) He showed me the way to the supermarket. 3) He likes shooting. 4) He shouted at him. 5) I always show my gift card to the check-out clerk so that I can get a discount

229. ## Algebra

Use the bisection method or a graphing calculator to find the coordinates of the two points on the graph of that lie r = 1 unit from the origin. Give the result to the nearest hundredth, I just need a direction to go on this problem

230. ## chemistry

NaCL is composed of 39.3% Na and 0.7%. Calculate the mass of Na in 0.375gm salt.

231. ## calculus

integrate x+5/(x^2+10x+26)

232. ## Economics

Explain the entities social regulation affects and how it affects them.

233. ## Algebra 1

write an equation of the line containing the given point and perpendicular to the given line (6,7);6x+=9 I am having a terrible time figuring out the last part. I would appreciate any help. Thank you.

234. ## math

7. If you can drive your car 540 miles on 26 2/3 gallons of gasoline, how many miles can you drive on one gallon?

235. ## Physics

Don't know how to calculate this, or the formula? A mono digital sound sample has a bit depth of 8 bits and a sampling rate of 9000 Hz. How much memory in bytes would it take to store 45 minutes of sound at this quality? Calculate your answer in bytes.

236. ## sociology

* How do you think life in the United States will change in the next 10 years? * How might the Internet be involved in the changes? * How do you think sociologists might use the Internet to study life in the United States? Name 3 specific ways.

237. ## Algebra 1

write an equation of the line containing the point and perpendicular to the given line (4,-8); 2x+5y=4 I am having a very hard time, but I'm trying hard to study the steps for solving the problem. Profoundly, thank you.

238. ## Physics

A moving object has a kinetic energy of 146 J and a momentum of 23.4 kg·m/s. a) Find the speed of the object. Answer in units of m/s.

239. ## Maths

quelle longueur aura une toile a l'interieur d'une piscine si le diametre de la piscine est 5,5 m ?

240. ## technology

what does Hard Disk-FDD/HDD mean?

241. ## cultural diversity

Is cooperative/competitive when a child prefers to help peers and subordinate his personal intrest to theinterest of the group

242. ## Math

solve for h A= 1/2(a +b)h I've tired over and over but still can't find the answer

243. ## English

Can you please check these few sentences? Thank you. 1)I insert a 50-cent coin into the trolley and I do my shopping. 2)I need to buy 200 grammes cooked ham and 150 grammes of raw ham. 3)Then I need to go to the counter of sliced meats and salami and then

244. ## us history

what issues did the compromise of 1850 leave unsettled

245. ## physics

Is a lightning a fluid?

246. ## Science/Nutrition

True or False? Resveratrol in red wine is an example of a phytochemical.

247. ## math

If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together?

248. ## Math

I need to find k for the probability distribution: P(x)=k(x+2) for x=1,2,3 I tried subbing in the x-values, which gave me: P(1)=3k P(2)=4k P(3)=5k But I still have no idea what I need to do to find k. Guidance, please?

249. ## Math

Determine whether the function is periodic. State the period, the domain and the range of g(x)= 2 cos 2x+3 sin 5x

250. ## Science

What are 5 facts about heat?

251. ## Algebra

I am trying to solve (2*(c^4)*2*(a^6))/(2*(a^10)) but the answer I am getting is 2c^4a^4. Do you know if this is correct?

252. ## math

three out of 20 students have been to the zoo. what percent of students have been to the zoo? i put 6%. is that right?

253. ## french

Please help me by translating the following french terms into english: 1) le litchi 2)le bonbon 3)le ragout 4)l'epice 5)les accras 6)les matoutous 7)le blaff 8) le feroce 9)le lambi

254. ## Chem

Enough SO3 is added to an evacuated container so its initial pressure is 4.00 atm. Calculate the mole fraction of O2 in the equilibrium mixture if the total pressure at equilibrium is 5.00 atm.

255. ## chemistry

what is the molarity of a solution when you ha 2mole of ammonium chloride (AgNo3) in 1L?

256. ## chemistry

What is the number of grams of a solute for a 3L of a 2.5 M HCl solution???

257. ## chemistry

What is the number of grams of a solute for a 3L of a 2.5 M HCl solution???

258. ## History

Why is it important to learn about the government?

259. ## Organic Chem (URGENT)

What is the monomeric unit of a chain of molecules joined by peptide bonds? Answer:?? If anyone can help with this question. Thank you very much.

260. ## chemistry

how many mL of watel should be added to yeild a soultion that has a concentration of .125 M when you start with a 250 mL soultion of 1 M AgNO3?

261. ## Algebra

Lee took a survey for the school newspaper and received the following data about the number of hours classmates studied per week: (1,2,4,5,6,8,9,10,10). Express as a common fraction the positive difference between tthe median and mean of this set of data.

262. ## algebra

If a pizza is 15.00 and the cost is 55.00 labor is 4.00 what is the equation to determine revenue?

263. ## social studies

what did the kings did for their peole nd what did they get in return

264. ## Algebra 1

Write an equation of the line containing (6,9); x + 2y=9 the equation is y=? Thanks

what is te best numbers for the base of a trapezoid that has a aarea of 4 square units and a height of 1

266. ## Algebra

Two angles of a triangle measure 55 degrees and 47 degrees. What is the number of degrees in the measure of the supplement of the remaining angle of the triangle?

267. ## math

verify that f and g are inverse functions. f(x) = 5x^2 x>(or equal too)0 g(x)= (x+2/5)^1/2

268. ## pre algebra-math

two fractions equivalent to the given factor: 1) 18/21 2)3/17 thank you so much if u helped me

269. ## Algebra

Can you help with the following equation? x-2 x-2 ------ x(2)-2x -2x+4 ---------- x(2)-4x+4

270. ## English 11

Type a short character sketch of a fictional Puritan named Justice Johnson based on what you have learned about the Puritans. Make certain that you describe how he dresses, how he lives, what he believes, how he spends his time--in short, describe him so

271. ## ALGEBRA

I have the answer and would love confirmation. VERY APPRECIATED! Find the LCM OF (1+2t), (1-4t^2), and (1-2t). 1-4t^2=(1+2t)(1-2t) 1+2t = 1+2t 1-4t^2= (1+2t)(1-2t) 1-2t = 1 - 2t. The LCM for all numbers is 1-4t^2 = (1+2t)(1-2t) Thank you

272. ## English 11

What did the term grace mean to the Puritan and how did it shape his life?

273. ## math

a sum of 102,000 is to be split by 3 people, (1) gets 5 times as much as (2) which gets 2/5 as much as (3). how is this problem solved

274. ## statistics

what is the percentage that 2 random people can be chosen from a total of 14 people.

Hey guys. I really need your help picking out a new business name. Which do you like/find catchier??? The business is a local "swapping" online site. Thanks a lot. SwapEm Swap Ventures SwapEm Local

276. ## public relation

what has the result of what the artist Chris Brown led for the public to say or view him?

The Chang Toy Factory in China can produce 35 mini toy care each minutes at a cost of 77 cents. then, a package of 35 is put in a cardboard box that holds 350. What does it cost to procuces 285 toy cars? can you show me how to solve this problem .? do you

278. ## statistics

what is average for the following numbers 65 49 24 15

279. ## math

Ben can complete 3 math problems in 20 minutes. If he continues working at the same rate, how long will it take Ben to complete 15 math problems?

280. ## Chemistry

Determine the volume of concentrated HCL and the volume of water needed to produce 20mL of 6M HCL.

281. ## L Pre-Cal

Hey! I'm getting stuck on how to solve this system of linear equations. Can anyone show me step by step Thanks! 3x-5y+5=1 5x-2y+3z=0 7x-y+3z=0

282. ## statistic

A business firm considers the number of years of formal education, X, a prime factor in screening applicants for employment in its plant. Assume from past experience that X ~ N (10.6, 2.5), where 10.6 is the mean and 2.5 is the standard deviation. (a) If

283. ## Human services

Where would I look for information on problems that infant daycare have. I know abuse and negalect are two major problems, but I need resources to back up the information that I know.

284. ## math

write fraction as a decimal nine and four tenth

285. ## Algebra 1

Write an equation of the line containing (6,9); x + 2y=9 the equation is y=? Thanks

286. ## math

How do I create a game with a 55percent chance of winning for Gr12 data management

287. ## calculus

Use the bisection method or a graphing calculator to find the coordinates of the two points on the graph of that lie r = 1 unit from the origin. Give the result to the nearest hundredth, I just need a direction to go on this problem

288. ## math

what is the anwser to 5 hundreds and 12 ten

289. ## Algebra

Graph the equations y=2|x-5|+2

290. ## personal planning

what types of diseases can you get if you are unhealthy?

291. ## Math

You're reading My ones digit is 1 less than 4. My tens digit is the greatest number of tens that can be in a number. What number am I?

292. ## Physics

a sled is capable of reaching speeds of 450 m/s in 1.82 s then stopped in 1.92 s what is the acceleration

293. ## Bio

What role does DNA play in helicase?

294. ## algbra

t = r + k/2(w) What does w equal?

295. ## physics

An arrow is shot vertically upward and then 2.15 s later passes the top of a tree 37.0 m high. How much longer will the arrow travel upward, and how high will it go?

296. ## math

one angle in a triangle is half the largest and three time the smallest what are the three angles

297. ## physics

someone swings down pendulem and rescue the lady in distress by grabbing her. inelastic collision at the equallibrium point o fthe pendulem. his mass is 90kg her mass is 50kg. what is the masimum height of the oppsite legde that he and she would ba able to

298. ## chemistry

On a trip you travel 308km in 3.5h and use 32L of gasoline. A) What is your average speed in km per hour? B)What is your gas mileage in miles per gallon?

299. ## physics

someone spinns with an angular velocity of 4.55rad/s with arms held out. his rotational inertia is 2.7kgm^2. whn the he pulls his arms in his angular velocity increases to 7.60rad/s. what is his rotary ek?

300. ## math

what equation will equal 12,345,678,987,654,321

301. ## spelling

Can I replace the word to with from in the following sentence: Laura often lost her homework on the way to school.

302. ## Maths,Science

(sinx)^8 + (cosx)^8=17/32

303. ## algebra2

how do you factor this? x(x-3)+5(x-3)

304. ## science

what is the volume of a 6.o-kg aluminum ball having a density of 2700 kg/m3?

305. ## chemistry

In this activity, why should there be no individual atoms left over that were origionally part of a reactant molecule?

306. ## math

two fractions equivalent to the given factor 8/14

307. ## algebra2

how do you factor this? a4b + a5b + 3

w^2+2w+1

309. ## algebra

-4x-12= can someone tell me how to solve

310. ## math

how do i factor this y=x to the power of 2 -2x-5? thanks in advance!

311. ## 5th math

look at the number of leters robin sorted at her job at the post office. what is the mean number of letters sorted? day------letters sat. 105 Mon. 97 Tues. 88 Wed. 86 please! show me how to do this problem.thanks!!

312. ## algebra

scientific notation 0.8775

313. ## Finite Math

Assume that you have a total of 15 people on the committee: 5 black males, 5 black females, 1 white male, and 4 white females. Party rules require that at least one black and at least one female hold one of the three offices. In how many ways can the

314. ## Algebra 1

how do u find the slope of a line

315. ## chem

Under what conditions does water boil at exactly 100 degrees Celsius?

316. ## trigonometry??

Did I do this right???? Express the following in degrees,minutes, and seconds: a.4 --> (180/pi)*4 = 229.18312 b.0.23 --> (180/pi)*0.23 = 13.17803 c.pi(3.14159)/6 --> (180/pi)*(pi*3.14156/6) = 94.24778 d.3*pi/2 --> (180/pi)*(3pi/2) = 270 e.-1.4 -->

317. ## Area and Perimeter

Create a new floor plan with a master bedroom showing an area of 120 square feet and a perimeter of 44 feet

318. ## Science

Name the type of research for each of the following and rank them 1-5 (1 strongest, 5 weakest: 5 points). A. A researcher collects questionnaires from people who exercise and nonexercising people to determine whether there was a difference in physical

319. ## math

how to add mixed fractions:17 2/3 23 1/4= ?

320. ## Math

In a variant of the game Nim, two players alternate taking turns in removing 1, 2, or 3, beans from a pile. The object is to remove the last bean. If the initial pile has 29 beans, should you want to go first or second to guarantee a win?

321. ## analogies

an 8 letter analogy for man: woman:: carved

322. ## Algebra

Graph the equations y=2|x-5|+2

323. ## 103 inf

What type of strategies can educators use to ensure their students are not “flaming”

324. ## algebra2

how do you factor 48x3z5y - 36x3z3y4 + 48x2z5y

325. ## English IV

Write a research paper about developments in society during the Romantic Era (1785-1832).

326. ## algebra2

how do you factor 15Rx - 3Rex

327. ## spelling- analogys

broom: sweep :: brush:_______

w^2+2w+1

330. ## Math

Solving First degree equations. 0.2x-0.3=0.1x+5 I am having a hard time entering this into my TI-84

331. ## Physics I NEED HELP!!!

of 0.13 kg is attached to a string with a length of 0.95 m. we choose the potential energy to be zero when the string makes an angle of 90 degrees with the vertical. (a) find the potential energy of this system when the string makes an angle of 45 degrees

332. ## algebra

scientific notation 0.8775

333. ## child day care

a child development is affected most by the

334. ## ctc

y=-1777x+27153 x=7606

335. ## maths

Hello I'm stuck on this question here it is x² + 3x - 6.75 = 0 So what does x equal to ?

336. ## math

how do i find the slope of line AB if A`s coordinates are(-4,3) and B`s coordinates are (2,-1)

337. ## math

a rope is 120 ft long and the water is 20 ft deep. how far is the anchor from a point directly below the boat?

338. ## penn foster

i'm typing my lab 2, case 8 radiology report and can't make out one word in the report. "carotery stick" it what it sounds like the lady is saying, but it doesn't make sense and I can't find it in any dictionary. help

340. ## math

What is the answer to -12+r=-11

341. ## Math

if 6 bugs are in a cage and you take away 70 but you need to divide that by 3, how many bugs would be left?

343. ## Science

How did living organisms shape our current atmosphere? How did free oxygen eventually begin to accumulate in the atmosphere? What was the role of photosynthesis.

344. ## algebra2

how do you factor this completely? 105x6y2z3 - 98x4y3z2 + 84x3y4z5

345. ## US History

What role did religion play in early European efforts at overseas colonizations?

346. ## writing

can you unscramble eratyleh

347. ## science

what is alkaline solution?

348. ## algebra2

what is the missing variable? 3a^2bx(?)=6a^2b^2x

350. ## Physics I NEED HELP!!!

of 0.13 kg is attached to a string with a length of 0.95 m. we choose the potential energy to be zero when the string makes an angle of 90 degrees with the vertical. (a) find the potential energy of this system when the string makes an angle of 45 degrees

351. ## ctc

3r-2s=11 2r+3s=29

352. ## math

convert 94/10 into a decimal?

353. ## algebra2

how can you factor this? x2 + 25