# Questions Asked onMarch 24, 2011

1. ## Trigonometry

Having trouble with true/false questions in Trigonometry. They read as follows - True or False: For a trigonometric function, y=f(x), then x=F^-1(y). Explain your answer. True or False: For a one to one function, y=f(x), then x=f^-1(y). Explain your

2. ## physics

The engine weighs 4500 newtons and it is lifted 1.5 meters up by the block and tackle system. To accomplish this, the mechanic must apply a force of 225 newtons while pulling a total of 37.5 meters of chain through the block and tackle pulley system. What

3. ## physics

Find the approximate gravitational red shift in 500 nm light emitted by a compact star whose mass is that of sun but whose radius is 10 km.

4. ## Physics

a 2 kg block slides down a frictionless incline from point A to point B. A force(magnitude P=3N) acts on the block between A and B, as shown. Points A and B are 2 m apart. If the kinetic energy of the block at A is 10 J, and the work done by gravity is

5. ## Math

Jill's front door is 42" wide and 84" tall. She purchased a circular table that is 96 inches in diameter. Will the table fit through the front door? I know the answer is yes but how I don't understand the math???

6. ## science

Calculate the molarity of each solution. a) 1.0 mol KCl in 750 mL of solution b) 0.50 mol MgCl2 in 1.5 L of solution

7. ## Math

A science museum requires 3 adult chaperones for every 15 students on a field trip. How many chaperones would be needed for a group of 125 students?

8. ## Physics

The human ear canal is approximately 2.3 cm long. It is open to the outside and is closed at the other end by the eardrum. Estimate the frequencies (in the audible range) of the standing waves in the ear canal. Express your answers using two significant

9. ## statistics

investigators at an agricultural research facility randomly assigned equal numbers of chicken to be housed in two rooms. In room #1, chickens experienced normal day/night cycles. In the other room, lights were left on 24 hours a day. The objective was to

10. ## Physics

A skier (m=61.0 kg) starts sliding down from the top of a ski jump with negligible friction and takes off horizontally. If h = 7.70 m and D = 11.4 m, find H. Find her total kinetic energy as she reaches the ground.

11. ## statistics

5. Congressional Committee Memberships The composition of the 108th Congress is 51 Republicans, 48 Democrats, and 1 Independent. A committee on aid to higher education is to be formed with 3 Senators to be chosen at random to head the committee. Find the

12. ## Math

A geologist at point A measures the distance and angle of elevation to two columns of the Glen Rose formation in Texas. If the distance AS=796 ft and the distance AN=850 ft, compute the difference in the heights of the two columns to the nearest foot. What

13. ## Chemistry

calculate the freezing and boiling points of each of the following solutions. (a) 0.37 m glucose in ethanol freezing point ______I got -1.2e2 but its wrong_______°C boiling point _________I got 1.1e2 but its wrong:(____°C (b) 15.0 g of decane, C10H22, in

14. ## Physics

An 80kg construction worker sits down 2.0 meters from the end of a 1450kg steel beam to eat his lunch. The beam is 6.0 m length total. A cable is supporting the beam and is rated at 15,000 N and is at a 30 degree angle to the beam. Should the worker be

15. ## English

I am the WORST writer. English is my weakness. I just wrote this literary analysis. I would go to the writing center at my school, but the paper is due tomorrow and it doesn't open until after my class. I would appreciate it SO much is someone could just

16. ## Spanish

Una noche, cuando yo era chica, miré por la cerradura de una puerta y esto es lo que ví: ví una mesa, ví una silla, ví un cojín, y ví una vela. La mesa estaba sobre el piso, la silla estaba sobre la mesa, el cojín estaba sobre la silla, y la vela

6x=48 x=

18. ## MATH

FIND THE MEDIAN OF THE FOLLOWING PROBLEM. ROUND TO THE NEAREST HUNDREADTH. 8,9,10,12,14,23,23,29,34,37

19. ## chemistry

write an equilibrium constant expression for the reaction of acetylene gas with hydrogen gas to produce methane gas.

20. ## math

Two cards are chosen from a standard deck of 52 playing cards without replacement. What is the probability both cards will be an Ace

21. ## AP PHYSICS MECH.

Need help urgent!!! A system consist of a ball of M2 and a uniform rod of M1 and length d. The rod is attached to a horizontal frictionless rotates at an angular speed w, as shown in the figure. The rotational inertia of the rod about point P is ? M1 d^2.

22. ## CHEMISTRY

The equilibrium constant for the reaction, SO2(g)+ NO2(g) NO(g)+ SO3(g) has been experimentally determined as a function of temperature. The results are presented in the table below. T (°F) KC 285 662 752 156 842 93.4 932 59.6 1022 40.2 If 0.0791 ft3 SO2,

23. ## calculus

At noon, ship A starts sailing due east at the rate of 20km/hr. Ath the time, ship B, which is located 100km east of ship A initially, starts sailing on a course 60 degrees north of west at the rate of 10km/hr. How fast is the distance between the two

24. ## Dynamics

During a high-speed chase, a 2400-lb sports car traveling at a speed of 100 mi/h just loses contact with the road as it reaches the crest A of a hill. a) Determine the radius of curvature r of the vertical profile of the road at A. b) Using the value of r

25. ## math

Determine the sum of the following angles: 13° 31' 27" , 64° 12' 48"

26. ## math

from 4 feet above a swimming pool, susan throws a ball upward witha velocity of 32 feet per second. how long does it take the ball to reach the water?

27. ## Math

A man flies a kite with a 100 foot string. the angle of a string is 52 degrees. how length off the ground is the kite?

28. ## Calculus

I need help with this question... Find the values for a, b, and c such that the graph of y= ax^2 + bx + c has a relative maximum at (3,12) and crosses the y-axis at (0,1). If someone could help me out, that would be awesome :)

29. ## Physics

A boy in a car moving at 10 km/h [N] wants to throw a ball to a girl standing on the right-hand side of the road. He is able to throw the ball at 20 km/h. He wants the ball to go straight east, directly to her. a) Relative to the car which way should he

30. ## geometry

A bicycle tire has a diameter of 24 inches. How many miles will the bicycle travel when the tires make 16,000 revolutions?

31. ## chem101

Hydrogen gas can be produced in the lab by the reaction of magnesium metal and hydrochloric acid. Mg + 2 HC -> MgCl2 + H2 How many grams of hydrogen gas will be produce if 5.00 g of magnesium metal is dissolved in excess acid.

32. ## physics

A block of mass m = 2.00 kg slides down a 30.0° incline which is 3.60 m high. At the bottom, it strikes a block of mass M = 7.20 kg which is at rest on a horizontal surface Determine the speeds of the two blocks after the collision. lighter block =

I have assignment i need help in Agency and partnership, cases how can i send it to you

34. ## algebra 1-B

solve (sqrt14-x)+8=(sqrt3-x)=11

35. ## health

choose a tv show that you enjoy and use the chart to emanine how the characters show empathy toward one another.which actions show compassion?which one don't?once you've completed the chart,pick one sence from the episode and determine how the characters

36. ## Air conditioning

The partial pressure of water vapor in an atmosphere at 35oC and 740 mm Hg pressure is 37 mm Hg. What is the relative humidity? What is the actual concentration of water vapor, expressed in ppm? The vapor pressure of water at 35oC is 42 mm Hg.

37. ## social studies

americans pay many different types of taxes to federal, state, and local governments. Choose the best example of a tax that we do NOT pay in the U.S.? A.payroll taxes B.value-added taxes C.sales taxes D.income taxes

38. ## finding perimeters

tell the dimensions and perimeters : 9 square inches

39. ## Science

The water molecules now in your body were once part of a molecular cloud. Only about onemillionth of the mass of a molecular cloud is in the form of water molecules, and the mass density of such a cloud is roughly 4.0×10−21 {\rm g}/{\rm cm}^{3} Estimate

Hypoventilation VS Bradyapnea What's the difference b/t the two? Aren't they both decreased breathing rate?

41. ## Physics

Which object exerts more gravitational force, object A with a mass of 25 grams and a density of 2 g/cm3 or object B with a mass of 55 grams and a density of 0.5 g/cm3?

42. ## Biology

Will iodine react with sucrose or glucose? I would say no, because it reacts with starch, a polysaccharide, and glucose is a monosaccaride and sucrose is a combination of fructose and glucose, two monosaccharides. Am I right? Why or why not? How does

43. ## Roper

You've made the finals of the Science Olympics! As one of your tasks, you're given 1.1 g of copper and asked to make a wire, using all the metal, with a resistance of 2.0 (ohms). Copper has a density of 8900 kg/m^3. What length will you choose for your

44. ## Algebra

Ameter stick casts a shadow 1.4 m long at the same time a flagpole casts a shadow 7.7 m long. The triangle formed by the meterstick and its shadow is similar to the triangle formed by the flagpole and its shadow. How tall is the flagpole?

45. ## Physics

how does the MA and the IMA of the inclined plane vary with the inclination angle?

46. ## Chemistry

Assume you are performing the calibration step of Experiment 8 and you begin with 40 g of water at 20 oC and 40 g of water at 80 oC. After adding the two portions of water into your calorimeter setup and following the procedure outlined in the experiment,

47. ## Math

Jill's front door is 42" wide and 84" tall. She purchased a circular table that is 96 inches in diameter. Will the table fit through the front door?

3bx+13x=9

49. ## Aztec

When Montezuma sent emmisaries with gifts to Cortes, how did they converse? they did not have Dona MArina (now known as La Malinche), and none of the Spanish conquistadors spoke Nahuatl.

50. ## Physics

how does the MA and the IMA of the inclined plane vary with the inclination angle?

51. ## Science

Hi - I need help with the following questions: Julie dissolved 20 g of sugar in a cup of water. The mass of the solution was 500 g. What volume (mL) of water did Julie start with? How did you determine the starting volume of water?

52. ## Aztec Gods

what was the clothing of the Aztec god, Quetzacoatl?

53. ## Physic

how does the M.A and the I.M.A of the inclined plane vary with the inclination angle?

54. ## geomtry

A tree casts a 25 foot shadow. At the same time of day, a 6 foot man standing near the tree casts a 9 foot shadow. What is the approximate height of the tree to the nearest foot?

55. ## math

an executive committee of three is selected from a group of ten which expression best describes the number of combinations.

56. ## Writing

Can you fix my writing? My topic is technology hurting kids. Support the side with details. The World of Technology Technology, Technology, that’s all we use today. There’s Facebook, Twitter, Myspace, and so many more. My opinion on technology is that

57. ## aztecs

what was the clothing of the Aztec god, Quetzacoatl? like you know when every year or so the aztec would choose 1 person to represent a god and they would wear the special clothing the aztecs made for that god

58. ## health insurance

RBRVS contain relative value components consist of

59. ## algebra

what are two factors of 240 that subtract or add to 14.

60. ## Math

On a multiple-choice test you randomly guess the answers to two questions. Each question has five choices. What is the probability that you get both answers correct?

61. ## Chemistry (pleas help!)

a stressed chemistry student is hyperventilating into a paper bag. The student stops to wip his brow after a few breaths, and the bag is at 5.7 KPa and the temperature in the lecture hall is 24 degrees C. The bag is 0.75 L full. The student then goes at it

62. ## chemistry

Enolase catalyzes the conversion of 2-phosphoglycerate (2-PG) to phosphoenolpyruvate (PEP). The deltaG’o for this reaction is +1.8 kJ/mol. If [2-PG] = 0.045 mM and [PEP] = 0.034 mM, what is the actual free energy, deltaG?

63. ## math

what are lines that cross eachother at exactly 1 point?

64. ## geomtry

A tree casts a 25 foot shadow. At the same time of day, a 6 foot man standing near the tree casts a 9 foot shadow. What is the approximate height of the tree to the nearest foot?

65. ## algebra

Evaluate each of the functions below at x = 1, 2, 4, 8, and 16. Plot the graph of each function. Classify each as linear, quadratic, polynomial, exponential, or logarithmic, and explain the reasons for your classifications. Compare how quickly each

66. ## transitional math

Im stuck on questions can anyone help me ? A)Which situation can be modeled by tossing a coin 3 times choosing which one of sixteen teams will win a tournament? B)picking one of six math teacher, C)decide which English teacher of eight will win a trip to

67. ## Chemistry

how do you compensate for coefficents while using a BCA chart? I know that you have to while using an ICE chart by multiplying by 2 when the coefficient is 2 etc, so that's why I was wondering...

68. ## Math

rationalize the denominator. Simplify. write final answers is standard form (a+bi). (4-5i)/(2-7i)

70. ## math

A group of 50,000 randomly selected adults were survey about whether they drink at least 6 8-oz glasses of water each day. Only 35% said yes to the question.

trains begin to stop at terminal b every morning at 5 a.m. and then come every 20 minutes for the next 3 hours. mr success needs 15 minutes to get to terminal b from his house. .if mr. success leaves his house at 7:08 a.m., what is the earliest time he can

72. ## english

why is measure of skill competence important?

73. ## finite math

a box contains 40 computer disks, 5 are defective. Three disks are selected from the box without replacement and regard to order. what is the probability that a. all three of the disks are defective b. none of the three disks are defective c. exactly one

74. ## Chemistry

Hello, i seem to be stuck on a problem and do'nt know why im not gettin the right answer.I have the he Ka and Kb values for each of the weak acids and bases from the chart and I keep getting zero and the second one 2.27*10^-24 is this correct?? Thank uu

112. ## math

Frank pays his employees weekly. He would like to start paying them four times the weekly amount on a monthly basis. Is a month equivalent to four weeks?

114. ## Chemistry

A solution consisting of 25.00 g Nh4Cl in 178 ml of water is titrated with 0.114M KOH. How many mL of KOH are required to reach the equivalence pt?

115. ## Math Definicions

What does symmets mean?

116. ## Trigonometry

Having trouble with true/false questions in Trigonometry. They read as follows - True or False: For a trigonometric function, y=f(x), then x=F^-1(y). Explain your answer. True or False: For a one to one function, y=f(x), then x=f^-1(y). Explain your

A skydiver is subject to two forces: gravity and air resistance. Falling vertically, she reaches a constant terminal speed at some time after jumping from the plane. Since she is moving at a constant velocity from that time until her chute opens, we

118. ## Algebra 2

trying to learn how to facor. x^2 - 6

119. ## Math

Find the area of a square picture who's length is 4 inches

120. ## social studies

culture is passed from generate to generation by?

121. ## 3rd Grade Math Decimals

forty-hundreths four-tenths six-tenths sixteen-hundreths

122. ## chem

calculate the freezing and boiling points of each of the following solutions. (a) 0.50 m glucose in ethanol for the freezing point i got 58 but it said i have the wrong sign...?

123. ## grammar

The coordinating conjunctions that can be used to combine two complete sentences with a comma are “for, and, nor, because, yet, so.

124. ## How many sig figs?

For this question: what is the boiling point of 0.39 mol ethylene glycol and 0.13 mol KBr in 155 g H2O? I got 102.1470968 and I tried it with 2 and with 3 sig figs but it's both wrong. I know that's the correct answer but I don't know how many sig figs I'm

125. ## math

what is 5 3/4 divided by 1/3? please show work.

126. ## Grade 12 Data Management math

I'm doing math through correspondence so material is not explained very well. I would appreciate if someone could explain this to me. This lesson is review of set theory and first degree equations. Indicate whether each of the following statements is true

127. ## pre calc

lnX + ln2 = 3

128. ## Calculus

I need help with this question still!!! Find the values for a, b, and c such that the graph of y= ax^2 + bx + c has a relative maximum at (3,12) and crosses the y-axis at (0,1). Please Help!!!

129. ## generate formulas

A box has a base with an area of 53 cm2 and a height of h. Which equation can be used to find V, the volume of the box?

130. ## Calculus

What is the limit as t approaches 0 for (sint)/(1+cost)?

131. ## Math

Twenty cookies need 1/4 cups of sugar. How much sugar is needed for 3 dozen?

132. ## Physics

A mass M of 5.80E-1 kg slides inside a hoop of radius R=1.50 m with negligible friction. When M is at the top, it has a speed of 5.15 m/s. Calculate the size of the force with which the M pushes on the hoop when M is at an angle of 41.0°.

133. ## Physics

When mass M is at the position shown, it is sliding down the inclined part of a slide at a speed of 1.89 m/s. The mass stops a distance S2 = 2.1 m along the level part of the slide. The distance S1 = 1.18 m and the angle θ = 35.10°. Calculate the

134. ## algebra

Factor the polynomial below. x2 - 10x + 9

135. ## math

ted put several different integers in order from least to greatest . he then put the same integers in order from greatest to least . both times the same number was third in order . explain how this is possible

136. ## Physics

The radius of the earth is 6.4 * 10^6 m. What is the acceleration of a meteor when it is 8.4*10^6M FROM THE CENTER OF THE EARTH?

137. ## statistics

A business uses a 7-point scale about satisfaction with the services it provides to clients. The ratings are normally distributed with a mean of 4.8 and a standard deviation of .5. What percentage of clients rate their satisfaction 1) Above 5? 2) Above 6?

138. ## math

write another name for the fraction 9/5ths

139. ## algerba

rewrite division as mulitplication -37-(78)

140. ## Math

Patty Kim earns $20,000 per year. She is paid 26 times per year and claims 1 exemption. If$17.31 is withheld from each paycheck, at what rate is she taxed?

141. ## cross word puzzle

This is for tomorrow and i'm in trouble with this puzzle, please help:ACROSS 9 letters and start with (au)the hint is groups of people who watch or listen to a show, speech, or other performance. Down:It starts off with (aw) and the hint is: a synonym for

142. ## grammar

Can you help me with my classifying sentences homework?

143. ## Physics

I launch a ball vertically precisely 8' in the air. Then I launch a ball vertically 10' in the air. How much longer will it take the ball to travel 10' versus 8'? Put differently, how much more time does it take the ball to go the 2' further (travelling up

Could you check my answers? five-tenths 0.5 five-hundreths 0.05 three-tenths 0.3 three-hundreths 0.03

145. ## Nutrition (Blood Tests)

If there was an eight year old boy who wasn't get enough to eat and was not eating nutritious foods, what kinds of things would be wrong with him? What things would be wrong in his blood tests? This is what I'm thinking: - prolonged hunger - depression:

146. ## Math

How many lines of symmetry are in a pentagon?

147. ## Spanish (please correct me if I'm still wrong)

Give the correct form of the appropriate verb, saber or conocer, which would be used in writing the following sentences in Spanish. 12. Maria knew everyone. 13. Because he had already seen the movie, he knew what happened? 14. The student knows the answer.

157. ## calculus

Given the differential equations: (sin x)y′′+ xy′+(x − 1/9) y = 0: • Determine all the regular singular points for the Eq.; • Derive the indicial equation corresponding to each regular point; • Determine the form of two linearly independent

158. ## math

can you divide -35by 5

159. ## math

what is the value of the 8 in 1,864,973?

160. ## math

if loar's mom gave her 3/4 of a dollar.joe's mom gave him 4/5 of a dollar. Who got more

161. ## math

what is the next number below 5,13,29,61,125,_?

162. ## science

help with thesis statement of moons gravity and relation to earthquakes

163. ## chemistry

What is the chemistry behind the “Breathalyzer” test. I'm supposed to explain the chemicals and structures involved with the reactions which produce the positive and negative results

164. ## English

In the novel Push by Sapphire, how does the narration change as the novel progresses?

165. ## algebra

1) What is 20% of 30? 2) What is 30% of 20? 3) If m and n are any whole number, is m% of n always equal to n% of m? Explain your answer and support it with 2 examples.

166. ## math

i want to find the capacity of a tank in litres which has height 30cm, base 16cm, lenght 17cm and has a thickness of 0.5cm

167. ## science

Calculate the energy required to raise the temperature of 150.0 g Ag from 273 K to 291 K.

168. ## Geometry

What is the area of a regular hexagon with a side length of 14ft?

169. ## physics

a very thin piece of copper wire has an electrical resistance of 20,000 Ohms. You connect its ends to a regular 2.0 Volt battery. How much power does it draw? Let's assume that this little piece of wire initially contained one trillion (that's a one with

170. ## math

how do you write 24th march 2011 in 5 letters withiut using numbers

171. ## social studies

"WITHOUT OUR TWO GREAT POLITICAL PARTIES CUTTING ACROSS ECONOMIC AND GEOGRAPHIC INTEREST, DEMOCRACY AS WE KNOW IT COULD NEVER HAVE BEEN MADE TO FUNCTION" THE AUTHOR OF THIS STATEMENT PROBABLY MEANT TO SUGGEST THAT? A.AN IMPORTANT FEATURE OF THE U.S.

172. ## physics

A certain roller coaster has a circular, vertical loop of radius 10 meters, such that at its top the riders are upside down. How fast does the roller coaster move at this point if the riders feel perfectly weightless when passing the top of the loop?

173. ## CHEMISTRY

An equilibrium mixture contains 2.0cm 3 of 1.00mol dm-3 of h2so4. Calculate the number of moles of H+ in this acid??? ???

174. ## CHEMISTRY

An equilibrium mixture contains 2.0cm 3 of 1.00mol dm-3 of h2so4. Calculate the number of moles of H+ in this acid??? ???

175. ## Math

Find the radius of the given circumference C= 3.14, r=?

a skydiver is subject to two forces: gravity and air resistance. Falling vertically, she reaches a constant terminal speed at some time after jumping from the plane. Since she is moving at a constant velocity from that time until her chute opens, we

177. ## math

subtract -5-12

178. ## history

what was the date that the Spanish conquered the aztecs???

179. ## algebra

6x+7 _____ = X. 5 Find x. Forgot what i'm supposed to do. Could someone explain?

180. ## CHEM

0.16 M HC2H3O2 and 0.31 M of NAC2H3O2 titrated with what ml of 0.25 M HCL

181. ## algebra

a survey of 2000 people was giuven their mode of transportation to work each day, the pie chart below gives the results of people surveyed, how many traveled by bike to work?

182. ## trigonometry

+cos 255+sin 165=

183. ## Pre-Calculus

Can someone please help me with the following question. 1) The weight of an object above Earth can be modeled by a function of the form w(h)=(r/r+h)^2*"w , where r is the radius of Earth 0" (approximately 3950 miles)," h" is the distance above Earth's

184. ## Pre Calculus

sec x = -2 , π ≤ x ≤ 3π Use a calculator to solve for x in the given interval 9)sinθ=0.1473, 0°≤θ≤90° A) -8.47° B) 8.38° C) 98.47° D) 8.47° 10) cosθ=0.7563,0°≤θ≤90° A) 37.10° B) 49.14° C) -49.14° D) 40.86°

185. ## English - Fools Crow

Hello! Can someone explain to me the following sentence: We're in Class 2. Why do we write C with a capital letter? It is not classroom what is it then?

186. ## science

what would happen to day and night if the Earth rotated faster?

187. ## chemistry

A sample of Nitrogen(N2)& Helium has a volume of 250mL @ 30degrees celsius & a total pressure of 745 mmHg a)If the pressure is 32mmHg what is the partial pressure of the Nitrogen? b) What is the volume of the Nitrogen at STP?

188. ## Physics -- Help!!

If you launch a ball precisely 8' vertically how long does it take to go from the ground to 8' and back to the ground? If you then launch the same ball precisely 10' vertically, how much longer will it take to return to the ground?

189. ## math

i want to use 30 centimeters of wood to frame a rectangular photo what is the greatest area for the photo could have

190. ## algebra

if the discriminant of (5u^2)+bu+2=0 is 41, what are all the values of b

191. ## maths

determine if ( 5/6,-2) is a solution to -6x -7y - 9

192. ## chemistry

Would a solution that contains a mixture of NCl and HCl be an effective buffer? Explain

193. ## calculus

calculate the calues of a,b,c if the point p(1,2) is on the curve y=ax^2+bx+c and the tangent line if y=x at the point Q(0,0)

194. ## math

what is the probability of 6,94,85,38,16,42,90,7,44

195. ## math

A certain strain of virus grows in numbers at the rate of 50% per hour. If its present population is 49,000 what will be its population count in 4 hours?

196. ## math

there are 20pages in jamal book he reads 1/5 of the book how many pages did he read?

197. ## algebra

a sphere has a diameter of 6x cen write an expression to represent the volume of the sphere in terms of pie

198. ## Physics

Find the net force of gravity on the moon (Mm = 7.35 x 10^22 kg) from the earth and the sun (Ms = 1.99 x 10^30). Assume that the two forces are perpendicular to each other. Give the angle in relationship to the sun.

199. ## math

simplify 5/8 over 5

200. ## pre calc

lnX + ln2 = 3

201. ## math

Write two other ratios equal to 9/12?

202. ## math

What are 10 numbers that have a median of 21, a range of 20, and a mode of 10?

203. ## Spanish

Give the correct form of the appropriate verb, saber or conocer, which would be used in writing the following sentence in Spanish. 2. Because he had already seen the movie, he knew what happened? El ya sabía lo que pasaba porque ya vio la película. would

204. ## history

what date did the spanish escape from tenochtitlan and then were defeated?

205. ## math

If an object is reflected twice over parallel lines, and corresponding points of the original and final translation image are 30 centimeters apart, how far apart are the parallel lines?

206. ## Chemistry

During a strenous workout, an athlete generates 1890.0 kj of heat energy. What mass of water would have to evaporate from the athlete's skin to dissipate this much heat?

207. ## Math

Solve -7ã(a+b)

208. ## Trigonometric Identities

Which of the following are trigonometric identities, I have narrowed it down to two - (cscx + cotx)^2 = 1 OR sin^2(x)sec^2(x) + 1 = cot^2(x)csc^2(x)

209. ## Math

I'm doing math through correspondence so material is not explained very well. I would appreciate if someone could explain this to me. This lesson is review of set theory and first degree equations. Indicate whether each of the following statements is true

210. ## Physics

A 3.9 g bullet leaves the muzzle of a rifle with a speed of 311 m/s. What total constant force is exerted on the bullet while it is traveling down the 0.82 m long barrel of the rifle? I converted 3.9 g to .0039 kg Used the equation t=d/r

211. ## math

if a triangle with square attached have areas of 6 square units for the smallest square and 10 square units for the largest square, what is the missing area? what are the side lengths for the triangle?

212. ## Pre-Calc H.W. Help :)

Can someone please help me with the following question. 1) The weight of an object above Earth can be modeled by a function of the form w(h)=(r/r+h)^2*"w , where r is the radius of Earth 0" (approximately 3950 miles)," h" is the distance above Earth's

236. ## Physics

About how much pressure do the feet of a 6000-kg elephant exert on the ground? Assume each foot has an area of 0.10 square meters.

237. ## math

How can you compare 2 fractions by using a number line?

238. ## Managerial Economics

Are organizations more risk adverse or individuals more risk adverse? Is one more risk tolerant? Use economic theory to explain your position.

239. ## math

you are playing a card game with a full deck of 52 cards. you win if you draw a red card that is a multiple of 5. what are your chances of winning on your first draw?

240. ## Litracy

HELP!!! I don't remember how to make a dam sonnet with 10 syllables?

241. ## Science

Inclination angle of 38.0 degrees with respect to the horizontal. Suppose a truck on a street, for the truck to remain at rest, a static friction must exist. If an additional force with a magnitude equal to one-fourth the weight of the truck is applied

242. ## English

Why did King want a integrated community instead of blacks forming a separate nation?

which of the following is NOT one of the three steps to take when audience benefits are hard to identify or develop

244. ## math

how do you fill in the table for y=1/2 (x-8)

If an audience is opposed to what you have to say or resistant to a change you are suggesting, a good approach is to

246. ## english

Is the word Redskins a compound word?

247. ## Geography

What caused the fall of the Roman Empire? a. defeat by Greece in the Pyrrhic War b. lack of cultural cohesion c. land region was too large to defend d. peasant rebellion

248. ## World geography

This period was a time of great political unrest, which divided Europe into eastern and western sections. a. Cold War b. Imperialist c. Middle Ages d. Yalta Conference

249. ## math

What are some strategies a student might use for finding the sum of 7 + 9 if they did not know the answer?

250. ## Physics

Two blocks, each of mass,m, are attached to the ends of a massless rod which pivots as shown in Fig. 8-40. Initially the rod is held in the horizontal position and then released. Calculate the magnitude and direction of the net torque on this system. This

251. ## algebra

multiply and simplify by factoring sqrt20a^11b*sqrt8a^12b^11

252. ## Geometry

Find the area of the isosceles trapezoid with lower base 18cm, legs 6cm and base angles 30 degrees

253. ## maths

find in implicit form, the general solution of the differential equation dy/dx = 2(e^x-e^-x)/y^2(e^x+e^-x)^4

254. ## algebra

If the cost of a cell phone has decreased 400% during the past 10 years, does that correspond to a cost decrease of four times?

255. ## Physics

A 7.80-g bullet moving at 590 m/s penetrates a tree trunk to a depth of 4.8 cm. Assuming the friction force is constant, determine how much time elapses between the moment the bullet enters the tree and the moment it stops moving.

256. ## literary

how do you write a genre in a book report

257. ## geometry, math

give the dimension of a rectangular prism with a capacity of 48 cubic feet

258. ## algebra

solve 3(x-2)+4x=-27

259. ## Physics

a skydiver is subject to two forces: gravity and air resistance. Falling vertically, she reaches a constant terminal speed at some time after jumping from the plane. Since she is moving at a constant velocity from that time until her chute opens, we

260. ## math/geometry

Two boxes must be wrapped. Both boxes are right rectangular prisms. The smaller box has a length of 12 inches. The larger box is similar to the first and has a length of 48 inches. Find the ratio of the amount of paper needed to wrap the large box to the

261. ## Finance

What is a significant disadvantage of the payback period? a. does not properly consider the time value of money, b. Is complicated to explain, c. Increase firm risk, or d.Provides a measure if liquidity.

262. ## Chemistry

How much sulfuric acid is neede to dissole 200 pounds of nickel powder

263. ## Writing

I need help on fixing my paper. Could you grade me on a scale of 1 to 12. The World of Technology Technology, Technology, that’s all we use today. There’s Facebook, Twitter, Myspace, and so many more. My opinion on technology is that I agree because

264. ## chemistry

Why are both hexokinase and phosphofructokinase-1 strongly inhibited by an ATP analog in which the oxygen atom joining the beta- and y-phosphorus atoms is replaced with a methylene group?

265. ## Chem

Initially, you have 1.00g of BaCl2 (MM=208.23) and 1.00g of AgNo3 (MM=169.88). How many moles of BaCl2 do you have initially in the mixture?

266. ## math

In a circle whose radius is 6, find the area of a sector, in terms of pi, whose center angle contains 30 degrees

267. ## math

how do u find the diameter when they only give u the circumference?

268. ## Math

I have a few basic physics problems. How do you calculate how long it will take for an object to hit the ground when it is dropped from a certain height? Specifically from 128 ft. Additionally how would you calculate how much velocity is needed to launch

269. ## math

In a circle whose radius is 6, find the area of a sector, in terms of pi, whose center angle contains 30 degrees

270. ## chem

Initially, you have 1.00g of BaCl2 (mm= 208.23) and 1.00g of AgNo3 (MM=169.88). How many moles of AgNO3 do you have initially in the mixture?

271. ## chemistry

would you expect lead chloride to dissolve in dilute HNO3? Explain

272. ## chem

Convert (1) from moles of BaCl2 to moles of AgNo3

273. ## critical cognition

Can someone help me evaluate this hypotheses? Evaluate the following hypothese using the five criteria ( The Scientific Method ) for a good scientific explanation. If the hypothesis is inadequate, formulate a new hypotheses and discuss why it is better. A.

274. ## Math

solve the quadratic equation using the square root property. (2x+5)^2=12

275. ## Math Help

Mobile ad spending. The amount spent worldwide in advertising on mobile devices can be estimated by f(x) =0.4x^2+0.01x+0.9. Where x is the number of years after 2005 and f(x) is in billions of dollars. When will worldwide mobile ad spending reaches \$41

276. ## math

A baseball diamond has 90 ft between each base A sofball diamond has 60 ft between each base How many yards longer is the space between bases an a baseball diamond than a softball diamond?

277. ## Matha

There are 6 girls and 5 boys. The teachet chooses 2 students random. What is thw probability of selecting a girl then a boy?

278. ## Statistics

The question is: In a study of 420,000 cell phone users in Denmark. It found that 135 developed cancer of the brain or nervous system. If we assume that such a cancer is not affected by cell phone, the probability of a person having such a cancer is

279. ## MATH

Can someone please help me with the following question. 1) The weight of an object above Earth can be modeled by a function of the form w(h)=(r/r+h)^2*"w , where r is the radius of Earth 0" (approximately 3950 miles)," h" is the distance above Earth's

280. ## math

a piece of ribbon is 4 1/2 feet long. a piece of blue ribbon is 1 yd long. How many feet longer is the piece of red ribbon than the piece of blue ribbon?

281. ## anatomy and physiology

a 73 year old woman suffers a severe cerebral hemorrhage after minor trauma. Blood work reveals that her blood clotting ability is impaired. Disease of which abdominal organ may contribute to this? Why?

282. ## Chemistry HELP!!

During a strenous workout, an athlete generates 1890.0 kj of heat energy. What mass of water would have to evaporate from the athlete's skin to dissipate this much heat?

283. ## algebra

multiply and simplify by factoring sqrt20a^11b*sqrt8a^12b^11

284. ## Algebra help

Match the equation 4x^6-2x^3+1=0. With a substitution from the column that could be used to reduced the equation to quadratic form: a) u=x^-1/3 b) u=x^1/3 c) u=x^-2 d) u=x^2 e) u=x^-2/3 f) u=x^3 g) u=x^2/3 h) u= x^4

285. ## Algebra help

Match the equation 4x^6-2x^3+1=0. With a substitution from the column that could be used to reduced the equation to quadratic form: a) u=x^-1/3 b) u=x^1/3 c) u=x^-2 d) u=x^2 e) u=x^-2/3 f) u=x^3 g) u=x^2/3 h) u= x^4

286. ## physics

how does the M.A. and the I.M.A. of the inclined plane vary with the inclination angle?

287. ## Physics

how does the M.A. and the I.M.A of the inclined plane vary with the inclination angle?

288. ## Math

On a multiple choice test you guess he answers to two questions. Each question has five choices. What is the probability that you both answers correct?

289. ## science

mathematical relationship between period and frequency