# Questions Asked onJanuary 27, 2011

1. ## Chemistry

Many power plants produce energy by burning carbon-based fuels, which also produces CO2. CO2 is a greenhouse gas, so over-production can have negative effects on the environment. Use enthalpy of formation data to calculate the number of moles of CO2 (g)

2. ## STUDY UNIT: MAIN IDEAS

Both Greta and Fred were on the bus that arrived in Pittsburgh. Fred was glad to be home. He looked forward to visiting with old friends. Greta, on the other hand, dreaded seeing her old boyfriend. She already missed her days in New York City. 2. What can

Experimental Procedure, Part F. A 1.0- mL volume of 0.010 M H2SO3 is added to a mixture of 12 drops of 0.01 M HIO3, 8 drops of deionized water, and 1 drop of starch solution. A color change in the reaction mixture occured in 40 seconds. a. Assuming 25

4. ## physics

A stationary 1.67 kg object is struck by a stick. The object experiences a horizontal force given b F = at-bt^2, where t is the time in milliseconds from the instant the stick first contacts the object. If a = 1500 N/ms and b = 20N/ms^3, what is the speed

5. ## chemistry

A crystalline material containing 30 grams of barium chloride crystals was placed into an oven at 400 degrees c and heated for two hours. It was then cooled and weighed. the new mass was less than before it was heated, containing 20 grams if barium

6. ## geometry

the diagonals of a rectangle are 8 units long and intersect at a 60 degree angle. Find the dimensions of the rectangle?

7. ## Trig

The diameter of the wheels on your car (including the tires) is 25 inches. You are going to drive 305 miles today. Each of your wheels is going to turn by an angle of how many degrees.

8. ## math

Where does the graph of x2 - x - 2 = y cross the x-axis?

9. ## Physics

A basketball is shot from an initial height of 2.4 m with an initial speed (v0 = 12 m/s) directed at an angle (35 degrees) above the horizontal. Additional information: Height of the basket is 3.05 m

10. ## math/science

If a fish can swim short distances at 48km/h, how long would the fish take to reach a smaller fish that is 3m away?

11. ## Chemistry

For a solution that is 0.20 M HCN(aq) with a Ka=4.9x10^-10 a. calculate the [H+] b. calculate the [OH-] c. what's the pH? Please show your work on how to solve it. Thank you

12. ## Physics

Two blocks are arranged as shown. The pulley can be considered to be massless, and friction is negligible. M1 is four times more massive than M2. M1--->0(Pulley) V V (down direction) V M2 If the system is released from rest, how far will M1 travel in 0.523

13. ## 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

14. ## physics

What is the kinetic energy of a 20 kg dog that is running at a speed of 7.3 m/s (about 16 mi/h)?

15. ## Elementary Math

What if we made a pattern by joining pentagons? If the length of each side of the pentagon is 1 unit, then what would be the perimeter of n pentagons joined together? Note: The perimeter is the distance around the outside of the figure.

16. ## Physiology

Pure gold has a density of 19 g/ml. If you bought a gold ring and found it had a volume of 0.3 ml and it weighed 5.7 grams, is it real gold? Show me your calculation

17. ## ap chemisrty

When heated, cyclopropane is converted to propene. Rate constants for this reaction at 470°C and 510°C are k = 1.10 10-4 s-1 and k = 1.02 10-3 s-1, respectively. Determine the activation energy, Ea, from these data.

18. ## Math

Two Boats left the harbour at the same time. One travelled at 10km/h on a bearing of N47°E. The other travelled at 8km/h on a bearing of N79°E. How far apart were the boats after 78 mins? Round the distance to the nearest tenth of a kilometer. Use

19. ## physics

a hockey puck rebounds from a board. the puck is in contact with the board for 2.5 ms. dertermine the acceleration of the puck over the time interval. V(i) = 26 m/s...at angle of 22 degrees. V(f) = 21 m/s...at angle of 22 degrees. a=?

20. ## chemistry

What volume does a mixture of 14.2g of helium and 21.6g of hydrogen gas occupy at 28 degrees celcius and .985atm?

21. ## Chemistry

The reaction of fluorine with ammonia produces dinitrogen tetrafluoride and hydrogen fluoride. 5 F2(g) + 2 NH3(g) N2F4(g) + 6 HF(g) (a) If you have 73.7 g NH3, how many grams of F2 are required for complete reaction? b) How many grams of NH3, are required

22. ## physics

A putting green is located 240ft horizontally and 64ft vertically from the tee. What must be the magnitude and direction of the initial velocity if a ball is to strike the green at this location after a time of 4 seconds?

23. ## Physiology

What is the volume of 0.23 kg of pure water?

24. ## Chemistry

Calcium carbonate reacts with phosphoric acid to produce calcium phosphate, carbon dioxide, and water. 3 CaCO3(s) + 2 H3PO4(aq) Ca3(PO4)2(aq) + 3 CO2(g) + 3 H2O(l) How many grams of phosphoric acid react with excess calcium carbonate to produce 3.47 g

25. ## Chemistry

What will be the final temperature of the water in an insulated container as the result of passing 6.00g of steam at 100.0 degrees Celsius into 100.0g of water at 24.0 degrees Celsius?

26. ## physics

The max speed of a 3.1 kg mass attached to a spring is .68 m/s and the max force exerted on the mass is 11N. What is the amplitude of motion on the mass? What is the force constant of the spring? And what is the frequency of oscillation?

27. ## chemistry

How much heat is associated with converting 100 g of steam at 112 degrees C to ice at -5.3 degrees C

28. ## physics

A clump of soft clay is thrown horizontally from 30.63 m above the ground with a speed of 30.0 m/s. Where is the clay after 3.8 s? Assume it sticks in place when it hits the ground

29. ## chemistry

he decomposition of nitrogen dioxide at a high temperature is second order in this reactant. NO2(g) NO(g) + 1/2 O2(g) The rate constant for this reaction is 3.40 L/mol·min. Determine the time needed for the concentration of NO2 to decrease from 2.30 mol/L

30. ## HELP

Calculate the change in energy when 665.0 g of CH3OH(g) completely reacts at a constant temperature of 300 K and constant pressure of 0.95 atm. R = 8.314 J/mol*K and R = 0.08206 atm*L/mol*K So i used the formula change in energy = change in H - nRT

31. ## Math

A pole vaulter cleared the bar at 490 cm. Convert 490 cm to meters using a unit multiplier

32. ## history

a.Which statement about lynchings in the South in the 1890s is true? 1. Lynchings decreased compared to the Reconstruction era. 2. Leaders of lynch mobs tended to come from the wealthy ruling class. 3. Lynchings and acts of violence against blacks

33. ## history

a. Which statement about the Ku Klux Klan during Reconstruction is NOT true? 1. Southern governments never created policies that resulted in the arrest of members. 2. They attempted to stop blacks from using their right to vote. 3. Blacks and whites who

34. ## Government high school

A G.P has 6 terms. If the 3rd and 4th terms are 28 and -56 respectively,find: (a) the first term (b) the sum of the G.P

35. ## finance

As you respond to this discussion question, think about the various ways you have purchased products and comment on the pro's and con's from your personal experiences.

36. ## Chemistry

what volume of 1.015mol/L magnesium hydroxide is needed to neutralize 40.0mL of 1.60mol/L hydrochloric acid. Can you work it out please? Thanks!

37. ## chemistry

Ammonia reacts with oxygen gas to form nitrogen monoxide and water. At constant temperture and pressure, how many of nitrogen monoxide can be made by the reaction of 800. ml of oxygen gas?

38. ## Chem

What would be the resulting molarity of a solution made by dissolving 21.9 grams of KCl in enough water to make an 869-milliliter solution?

39. ## algebra

a motorboat can maintain a constant speed of 11 miles per hour relative to the water. The boat makes a trip upstream to a certain point in 21 minutes; the return trip takes 1 minutes. That is the speed of the current?

40. ## physics

A car moving at 10m/s when it begins to be accelerated at 2.5m/s^2. (a)How long does the car take to reach a speed of 25m/s? (b) How far does it go during this period

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

42. ## physics

A student presses a book between his hands, as the drawing indicates. The forces that he exerts on the front and back covers of the book are perpendicular to the book and are horizontal. The book weighs 30.0 N. The coefficient of static friction between

43. ## MATH

STATE THE SLOPE AND Y-INTERCEPT OF THE EQUATION 5X-2Y=-10

44. ## physics 2

1)what potential differences must be applied across across a 1500 resistor in order that the resulting current be 50.mA?

45. ## chemistry

How many milliliters of 1.9 M HCl must be transfered from a reagent bottle to provide 24 g HCl for a reaction?

46. ## physics, I'm stuck

In an aortic aneurysm, a bulge forms where the walls of the aorta are weakened. If blood flowing through the aorta (radius 1.0 cm) enters an aneurysm with a radius of 2.5 cm, how much on average is the blood pressure higher inside the aneurysm than the

47. ## Algebra

Compute the value of the discriminant and give the number of real solutions to the quadratic equation. 2x^2+5x-7=0 Discrimnant= number of real solutions=

48. ## math

what is 0.775 rounded to nearest cent

49. ## Spanish

8. "Soy generoso" a. ¿De dónde eres? b. ¿Cómo eres? c. ¿Qué tal? d. ¿Cómo te llamas? B? 10. ¿Te gusta____? a. tampoco b. está c. nadar d. nada C? 11. El profesor ______, y el estudiante ________. a. termina las clase / empieza la clase b. enseña

Discuss generally the role of planning in each of the three levels of positive behavior support (PBS).

51. ## Chemistry

Complete combustion of 7.70 g of a hydrocarbon produced 23.7 g of CO2 and 10.9 of H2O. What is the empirical formula of the hydrocarbon? I first calculated the moles of both the carbon dioxide and the water, but I have no idea where to go from there. Any

52. ## physics

The anchor shackle supports a cable force of 600 lb. If the pin has a diameter of 0.25 in., determine the average shear stress in the pin.

53. ## Chemistry

what volume of 1.015mol/L magnesium hydroxide is needed to neutralize 40.0mL of 1.60mol/L hydrochloric acid. Can you work it out please? Thanks!

54. ## Spanish!!

Can You Check My Answers?? Questions:: 1.¿Qué enciendes cuando tienes calor? 2.¿Qué apagas cuando tienes frío? 3.¿Qué usas en tu cama cuando hace frío? 4.¿Dónde están las cosas muy frías en tu cocina? 5.¿Dónde está tu ropa? 6.¿Qué hay en

If the reaction below proceeds with a 96.8% yield, how many kilograms of CaSO4 are formed when 5.27 kg SO2 reacts with an excess of CaCO3 and O2? 2 CaCO3(s) + 2 SO2(g) + O2(g) 2 CaSO4(g) + 2 CO2(g)

56. ## Algebra

Find the midpoint M of the line segment joining the points C = (-4,-5) and D = (2,-1). I got (-1,-3) can you check me? Thanks

57. ## Chemistry

a container holds 0.450 qt of liquid. How many milliliters of lemonade will it hold?

58. ## Chemistry

Will Zinc react with Zn(NO3)2, Cu(NO3)2,Pb(NO3)2, Mg(NO3)2, AgNO3, Al(NO3)3, or Fe(NO3)3

59. ## joe has a mass of 50 kg and sally has a madphysics

joe has a mass of 50 kg and sally has a mads of 30 kg. they sit in class with a separation of 0.5 meters. Find hhe gravitational attraction between joe and sally

60. ## Chemistry

An unknown element Q has two known isotopes: 61Q and 62Q. If the average atomic mass is 61.4 amu, what are the relative percentages of the isotopes?

61. ## Statistics

Given a mean of 60 and a standard divation of 7, what percentate of scores ae 73 or less? What is the formula for determining this value?

62. ## chemistry

how can i make saturated CuSO4.5H2O saturated solution.Please tell temperature also?

63. ## PHYSICS NEED HELP FAST

A 5kg bullet fired from a gun at 725m/s becomes embedded in a .50kg block of wood that is free to move along a surface and the coefficient of friction .355 between the surface and block of wood. find the distance it slides acroos the table.

64. ## algebra

The force of gravity is inversely proportional to the square of the center of the earth. if you weigh 120 lbs on the surface of the earth, how much would you weigh 250 miles above the surface? (Earth's radius = 4000 miles)

65. ## MATH

The eaves of a roof sloping at 23° overhand the walls, the edge of the roof being 75 cm from the top of the wall. The top of the wall is 5.4 metres above the ground. What is the height above the ground of the edge of the roof, to the nearest centimeter?

66. ## physics. need help fast

A 5kg bullet fired from a gun at 725m/s becomes embedded in a .50kg block of wood that is free to move along a surface and the coefficient of friction .355 between the surface and block of wood. find the distance it slides acroos the table.

67. ## math

please explain how to get the answer to this question. 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?

68. ## English

How many adjectives are in this sentence? That glossy, red apple rolled out of the grocery bag and across the smooth table.

69. ## physical science

A system gives off 196 kJ of heat to the surroundings and the surroundings do 4.20 x 10³ kJ of work on the system. What is the change in internal energy of the system?

70. ## math

a farmer needs to buy fencing to go around his garden. The garden is a 20 by 15 rectangle . How much fencing will he need?

71. ## physics

An automobile weighing 15000n crashes into a wall with a velocity of 5m/sec. If the car moves .15m before coming to a stop, what average force does the car exert? on the wall?

72. ## Math

A 26 inch ribbon is cut into three pieces. One piece is 12 inches. The remaining two pieces must have one piece two inches longer than the other. How long is the shortest piece of ribbon?

73. ## U.S history

Analyze Wilson’s attempt to forge a peace based on his Fourteen Points and explain why developments at home and abroad forced him to compromise.

74. ## Geography

explain how Western Europe's physical geography affects its climate, settlement patterns, culture, and economy. Can anyone give me a website link to go to for this information?

75. ## physics

what is the magnitude of the electric field produced by a charge of magnitude 8.00 uC at a distance of 1.00 m?

76. ## Chemistry;

for a solution of the weak base, 0.075 M ethylamine C2H5NH2(aq), the hydroxide ion concentration (OH-) is 6.6x10^-3 M. Assume that temperature is constant and volumes are additive. a. Write the equilibrium dissociation equation. b. What's the pH of 0.075 M

77. ## Chemistry

All the noble gases except helium crystallize with fcc structures. Derive an equation relating the atomic radius to the density of an fcc solid of given molecular weight and apply it to deduce the atomic radii of the noble gases.

78. ## Chemistry

Please help me with these questions: 1. Consider the equation:2Na+ 2H2O-->2NaOH +H2 -If 92.0g of sodium is reacted with 76.0g of water until the reaction goes to completion, which reactant will remain and in what quantity? A: I know that H20 is the

79. ## LEARNING SKILLS

Suppose you're just beginning to study the information in your third shipment of material. When can you expect the next shipment to be sent? A. When you submit a certain number of examinations in your current shipment B. When you call DIAL-A-QUESTION® and

80. ## MATH

A dartboard has the numbers 3, 6, 9, 12, 15, 19, 21, 25, 27, and 30 on it. What is the fewest number of darts that could be thrown if two darts tcannot land on the same number and if the sum of the scores must be 50?

81. ## UsHistory

"The individual can be free only when the power of one governmental branch is balanced by the other two" Baron de Montesquieu, 1735 This idea is best illustrated by which aspect of the US government?

82. ## Chemistry

To an initially evacuated 50.0L container maintained at 155C were added 3.20g of gaseous xenon and 4.00g of gaseous fluorine. A spark was used to initiate reaction between xenon and fluorine, and gaseous xenon hexafluoride was the sole reaction product.

83. ## U.S history

how did Wilsonian idealism turned the war into an ideological crusade that inspired fervor and overwhelmed dissent

compare the organizational and procedural process needed to manage information in a small business and medium business and a large global business

85. ## Calculus

Consider a car whose position, s, is given by the table (s) 0 0.2 0.4 0.6 0.8 1 (ft) 0 0.3 1.4 3.8 6.5 9.6 Find the average velocity over the interval 0

86. ## 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.

"Most Americans would follow a thinker rather than become one themselves." Please help me explain that sentence, and also give me examples!!!who is a thinker?? in what situation do they follow the thinker, and why????

88. ## Algebra 1

Write an equation of the line containing the point and perpendicular (4,-8);2x+5y=4. I still don't get it. I really appreciate your help.

89. ## Pre-Algebra Math

A bank teller is counting his money and notices that he has an equal number of tens and twenties. He also had $147 in other bills. If the total value of the bills he has is$1,167, how many tens and twenties does he have What would be the equation in

90. ## Algebra

I am to find the equation of the axis of symmetry and the coordinate of the vertex of the graph of each function. I don't undertand y=2x^2+4

91. ## chemistry

A solution is prepared by mixing 5.00 grams of compound Z (molar mass 15.00 g/mol) in 100.0 ml of water. The density of the solution is 1.09 g/ml. Calculate the molarity of the solution

92. ## physics

a student does 314 J of work in moving a desk 2.1 m. What was the magnitude of the applied horizontal force?

93. ## Math

A refrigerated truck leaves a rest stop traveling at a steady rate of 56 mi/h. A car leaves the same rest stop 1/4 h later followinf rhe truck at a steady rate of 64 mi/h. How long after the truck leaves the rest stop wil the car overtake the truck. In

94. ## geometry

How do you solve r(raised to the third power)=288?

95. ## U.S history

Describe America’s economic and military role in WW1

96. ## Spanish

1. Me gusta hablar por teléfono. _______ a. Soy trabajador b. Soy callado c. Soy sociable d. Soy antipático C? 2. Jaun no es serio. Es ______. a. paciente b. atrevido c. gracioso d. prudente C? 3. Rosa es atrevida, no es ____. a. prudente b. callado c.

97. ## Statistics

Given a mean of 60 and a standard divation of 7, what proportion of scores is between 45 and 78? What is the formula for determining this proportion?

98. ## Chemistry

I'm sorry I'm just really confused by ionization energies and the heat of formation. Could you explain how to set up this problem? Use the data (kJ) for ionization energies, electron affinities and heats of formation to find the lattice energy of Fe3O2(s)

99. ## geometry

francisco designed a triangular garden surrounded by three square gardens. the area of garden c (the largest garden) is 400 sq. ft. and the length of a side of garden b is 12 ft. find the lengths of all sides of the triangular gardens and find the areas of

100. ## Physical science

A ball thrown upward reaches a height of 13m. How much time did it take to get to this height? How much time will take to fall to the ground?

101. ## algebra

polynominal An appliance company sells x machines total revenue R in dollars, given by polynominal R=221.19x-0.2x^2. What is revenue from sale of 273 machines. I do not know what I am suppose to multiply first. Please help.

130. ## Biology

What is the relationship between an increase in light intensity and photosynthetic rate in leaves from a corn plant? How does this relationship compare with the tomato plants?

131. ## Chemistry

If the mass of isolated Fe2O3 were .300 g, what is the average mass of iron per tablet?

132. ## Precalc

How to solve for x: 2^(2x) + 2^(x) -12 = 0 Steps too I tried solving this but I ended with ln(12) / 2ln(2) + ln(2) but the real answer is supposed to be ln(3) / ln(2) or 1.585

133. ## chem

a solution of A (molar mass 100g/mol) and B (molar mass 1.10 x 10^2 g/mol) is prepared by mixing equal masses of the two. Find the mole fractions of each component in solution

134. ## Organic Chem

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

135. ## English

Can you please check if everything is correct? Thank you very much. 1) Hamlet wonders whether he should make a stand against his sea of troubles or leave things as they are. 2) He believes that both active and passive resistance is bound to meet failure.

136. ## Math

2/3q + 5 = 3/4

137. ## physics

A 49-kg bungee jumper has fallen far enough that her bungee cord is beginning to stretch and resist her downward motion. Find the force (magnitude and direction) exerted on her by the bungee cord at an instant when her downward acceleration has a magnitude

138. ## physics

A motorcycle, initially traveling at a speed of 14 m/s, slows down (decelerates) at a rate of -3.5 m/s2 for 2 s. How far does it travel during that time?

139. ## physics

A 5kg bullet fired from a gun at 725m/s becomes embedded in a .50kg block of wood that is free to move along a surface and the coefficient of friction .355 between the surface and block of wood. find the distance it slides acroos the table.

140. ## Chemistry

The order is given for an injection of 120mg of x and 10mg of y. On the shelf you have 50mg/mL of x and 75mg/mL of y. what will be the total volume in your syringe?

141. ## Help

Is there a website that will help me solve this? I can't find anything. I'm coming up with x=1/3 but I feel I'm doing it wrong. Find all real number solutions to (cubed root 3x-8)-1=0 If there is more than one solution, separate them with commas. If there

142. ## math

Mr. Miller teaches a class with 15 boys and 5 girls. If he randomly chooses a student from the class, what is the probability that the student chosen is NOT a boy? A) .25 B) .33 C) .50 D) .75

143. ## PHYSICS NEED HELP FAST

A 5kg bullet fired from a gun at 725m/s becomes embedded in a .50kg block of wood that is free to move along a surface and the coefficient of friction .355 between the surface and block of wood. find the distance it slides acroos the table.

144. ## Math

Rupert flew 3/16 of the way around the world but George flew 4/9 as far as Rupert. How far around the world did George Fly?

145. ## Algebra 1

I'm graphing linear inequalities...it says I need to do: y5 How do I do this?

146. ## 7th grade math: Pythagorean Thereom

If the sum of the sides of a right triangle is 49 inches and the hypotenus is 41 inches, then what would be the other two sides?

147. ## Education Psychology

Steve ponders a math problem that asks for the number of handshakes if six people at a meeting shake hands just once with each other. The problem then asks for the number of handshakes if there are n people. Steve arrives at the correct answers after a

148. ## Career Plans

What are some career plans to do with science? I really enjoy chemistry and geology. What are some career plans to do with English? Socials? I like math, but I don't like pre-calculus, I can do some bits of algebra, what does a civil engineer need?

149. ## chemistry

A student graphs the data from the experiment to determine how pH affects reaction rate and finds that the slope of a line through the data for pH = 7 is 5 seconds per absorbance unit. What has he/she done wrong?

150. ## Geometry

The area of a circle is 72pi. What is the circumference?

151. ## Math

Find all real number solutions to (cubed root 3x-8)-1=0 If there is more than one solution, separate them with commas. If there is no solution, answer as "No solution."

152. ## Chemistry

Ok this is my last hope, I totally don't get this question. Suppose you have one beaker of H2O at a certain mass and temperature and another beaker of H2O at a different mass and temperature. You then pour these two beakers into one separate beaker. How do

153. ## gr.10 History

What were Robert Laird Borden's successes, failures and overall view of Canada? I know that he was the most successful Prime Minister,and I also know that he adopted conscription, and he was indispensable to the war effort. I don't know what his failures

154. ## English

I forgot to include the following sentences. Can you check them please? Thank you 1) The medieval perspective of death, which saw death as a liberation from the prison of the body is countered by the Renaissance one, which was doubtful about (?) the

155. ## Bobpursely

Bobpursely would you mind looking at my physics post. Just provide me with the formulas.

156. ## Calc.

Evaluate the definite integral. S b= sqrt(Pi) a= 0 xcos(x^2)dx I'm not sure if this is right? u= x^2 du= 2xdx du/2= xdx S (1/2)cos(u) S (1/2)*sin(x^2) [0.5 * sin(sqrt(Pi))^2] - [0.5 * sin(0)^2] 0 - 0 = 0, so zero is the answer?

157. ## Pyschology

Provide an example of how one domain of development affect or impact the other two domains

161. ## physics

A Corvette, initially traveling at a speed of 6 m/s, speeds up (accelerates) at a rate of 0.2 m/s2 for 3 s. How far does it travel during that time? I tried d=vi*t-.2*t^2 but I did not get the correct answer

162. ## Math

Use factorization to simplify the given expression in part (a). Then find the indicated limit in part (b). (a) 3x3 + 9x2 + 9x + 3 x4 + x3 + x + 1 (b) lim x → −1 3x3 + 9x2 + 9x + 1 x4 + x3 + x + 1

163. ## PHYSICS NEED HELP FAST

A 5kg bullet fired from a gun at 725m/s becomes embedded in a .50kg block of wood that is free to move along a surface and the coefficient of friction .355 between the surface and block of wood. find the distance it slides acroos the table

164. ## Algebra

Is there anybody out there that can give me the answer to this problem I have tried but I can't get it. I really need to turn in my work. Thank you (4,-8); 2x+5y=4

165. ## algebra 2

2X^4-9X^3+3X^2-X-5=0 Given that one root is 2+i, solve the equation. So far I have it set up like this: 2X^4-9X^3+3X^2-X-5/X^2-4X+5 I don't know how to get the answer, I know that I have to use long division but when I started to try it I kept getting

166. ## Spanish (URGENT)

Habia una vez hay un conejo pequeno. El no estaba contento. Queria mirar como les otros animales. Cuando él vio Mr. Bushy Tail, la ardilla, él quise una cola que se parecio las ardillas. Entonces, él vio Mr. Porcupine y el quise (quills). Entonces él

167. ## algebra 2

2X^4-9X^3+13X^2-X-5=0 Given that one root is 2+i, solve the equation. So far I have it set up like this: 2X^4-9X^3+13X^2-X-5/X^2-4X+5 I don't know how to get the answer, I know that I have to use long division but when I started to try it I kept getting

168. ## Reference Letter

Hey Im trying to write a Reference letter, and Im kind of having trouble starting off. I have to imagine myself as an adult who knows me as a student.Then I have to create a made up letter of reference for myself based on what I hope someone would honestly

169. ## Math

what is the GCF and the LCM fo 10-75-55 could you please explain to me how to do this. Thank you

170. ## Algebra

Solve the system: 3x-y+z=3 -x+y+2z=0 -5x+3y+2z=-2 x= y= z=

171. ## Science

Calculate the change in temperature with respect to height for the following, Height (KM) Mid-Lattitude Temp (C) 0 15 11 -56 16 -56

172. ## Career Plans

Would doctor be a career? Like what does it mean specifically by careers? Does it mean jobs?

173. ## algebra

I need help solving and graphing the equation. y= -7+3

174. ## Spanish

What is the answer to the question in Spanish Para ti tiene que cocinar la langosta con mucha mantequilla?

175. ## English

Can you please check these sentences about Hamlet? Thank you. 1) Hamlet wonders whether he should make a stand against his sea of troubles or leave things as they are. 2) He believes that both active and passive resistance is bound to meet failure. 3)

182. ## MATH

HOW MANY 1FT TILES ARE NEEDED TO COVER A 15FT BY 25 FT PATIO

183. ## trig

convert to degrees, minutes and seconds 3pi/2 radians can u plz help

184. ## Calculus

Under what conditions for f'(x) and f''(x) can a graph be "straight" without being horizontal? (I'm learning critical points and points of inflection...) Thank You.

185. ## math

given AB and AD are tangents of C, and the m

186. ## Chemistry 2

An aqueous solution has a vapor pressure of 81.1 at 50 . The vapor pressure of pure water at this temperature is 92.6. What is the concentration of in mass percent?

187. ## physics

A 1790-kg car is traveling with a speed of 15.6 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 78.4 m?

Why does the chosen developmental theorist appeal to you? Relate the chosen theory to a recent or upcoming developmental stage or phase in your own life.

PLEASE HELP! I have the steps down and an answer..just need the correct one. 6/8 = 8/y - 1/2 The LCM here is 8y, so I multiply on both sides by 8y. 8y times 6/8 = 8y times 8/y - 8y times 1/2. After canceling out, I have 6y = 64 - 4y. Combine like terms. 2y

190. ## science

A baseball player throws a ball vertical upwards describe this motion of ball in words

191. ## computers

When you press the power button on your computer, it doesn’t turn on. There is nothing…silence…absolute zero. There are no beeps, no whistles, nothing. The monitor is getting power and the power strip is turned on. 1.Draw a diagram of the wiring

192. ## chemistry

how many grams of ethenol do i need to burn in excess oxygen in order to recover 5.0 g of h2o in a 75% yield

193. ## U.S history

Describe America’s economic and military role in the war

194. ## Precalc

Solve for x log[1/3](x^(2) + x) - log[1/3] (x^(2) - x) = -1 Steps too please. so far I tried this and I got 3 = (x+1) / (x-1) I asked this question before, but what would x= ?

195. ## algebra

write each square as a trinomial: (-11t^2 - 2)^2 (22t^4 + 44 + 4)

196. ## algebra

what is the inverse ƒ(x) = x2 - 9

197. ## English

In what way does Roger Ebert do his criteria in Harry Potter and the Sorcerer’s Stone? I know that an effective evaluation is that the writer explains the criteria on which he or she bases the evaluation. In what ways does ROGER EBERT do this?

198. ## French

Hi, all! I'm trying to right a small and simple paragraph in french. This is what I'm trying to say: Yesterday, I read an article "Skills and Accuracy in Criminal Profiling" by Richard N. Kocsis in English. I liked it a lot because law is my favourite

199. ## Photography

Suppose you have three negatives: an over-exposed one, an under exposed one, and a correctly exposed one. Which would require the longest exposure during contact printing?

200. ## 5th math

how do you divide 302 by 33,593? how do you divide 67 by 48,384? show me step by step pleae! if you can?

I have an input output table, but I can't figure out the rule. Input: 1, 2, 5, 7, 10 Output:5, 15,?, ?, ?

202. ## Algebra 1

a train leaves a city heading west and travels at 50 miles per hour. three hours later, a second train laeves from the same place and travels in the same directionat 65 per hour. how long will it take for the second train to overtake first train?

203. ## physics

Explain why the occupants in a running car observe objects on the roadside as though they are running backwards.

204. ## English

I need a sentence with the word tree

274. ## enginireiring

How fast can a Farrari FXX go?

275. ## engineering

How fast can a Farrari FXX go?

276. ## Math help once again

y = log x If y = 10, then what is x? How do I figure this one out? Miley is confused.

277. ## arithmetic

can you show me how to do 5/6 x 4