hey guys, i follow you up to the point of intergrating the final line. How would I intergrate [x^-2.e^-x] dx thx

49,088 questions, page 188
1. math

Find the length of the line segment joining the points whose coordinates are (-3,1) and (5,-5)

asked by Anonymous on August 17, 2015
2. calculus

Plot the points and determine the slope of the line containing them (-7,-4);(8,-4) please show work

asked by Holly on December 7, 2012
3. GEOMETRY ONE QUESTION!? THANK YOU!

In triangle ABC, centroid D is on the median line segment AM. AD=x+5 and DM=2x-1. Find AM. Thank You ^_^!!!!!

asked by Lily on December 29, 2011
4. AP Calc. AB

let f be the function given by f(x)=-2e^x^3. F0r what value of x is the slope of the line tangent to the graph of f at (x,f(x)) equal to -6

asked by Rachel on January 7, 2015
5. English

Hamlet Whats this line mean? Nay, answer me: stand, and unfold yourself.

asked by Courtney on May 11, 2010
6. MATH HELP

Write the equation of the line that passes through the points (3, 6) and (4, 10) using function notation. f(x) = 4x − 6 f(x) = x + 4 y = x + 4 y = 4x − 6

asked by Oscar on October 28, 2015
7. science

For ........... the graph of current and voltage is not a straight line and value of resistance is not constant.

asked by shankar on April 24, 2012
8. math

find the equation of the circle having center (3,4) & touches the line 5x+12y+11=0

asked by himanshu on October 25, 2015
9. calculas

Question # 01 Solve the inequality and sketch the solution on a coordinate line.

asked by khan on March 20, 2007
10. math

Explain how you can be sure that all rates you have written on a double number line are correct.

asked by anonymus on November 4, 2014

Find the missing coeffectient in the equation of the line. -4x+by=10 that passes through (2,3) Could someone explain please.. Thanks.

asked by Allyson on December 9, 2010
12. geometry

If two line are parallel and the slope of one of the lines is m, what is the product of thir slopes?

asked by Anonymous on November 11, 2009
13. Math

Write an equation of the line satisfying the given conditions in stand form. Ax+By=C How would you do this? m=2 and contains (-3,1)

asked by Ryan on September 24, 2010
14. mathematics

Write the equation of the line satisfying the given conditions. Passing through ( 9, 7 ) with slope - 3

asked by Anonymous on May 7, 2013
15. Language

Write each group of sentences as one sentence. Use (and) or (or) to join the predicates in each compound predicate. Add commas where needed. 1/ Architects discuss ideas. Architects draw plans. They work with owners. Answer: Architects discuss ideas,draw

asked by Nnh on October 26, 2014
16. CHECK MY ANSWERS American Government

my answers have * next to them 1. A political system that separates the law-making and law-enforcing branches is called what? (1 point) a federal system a parliamentary system a presidential system*** a unitary system 2. Which of the following statements

asked by Anonymous on September 12, 2016

The chart below describes the how the governments of two countries share power: Country A: •local and state government share power with the central government •the central government has final authority Country B •local and state governments share

asked by Nikol on June 3, 2015
18. physics

A 10,000N car is on a roller coaster. at the top of the tallest hill (position 1) the reaches a hieght 36m above the lowest point on the roller coaster (position 2). after accelerating down the hill the roller coaster makes another (position 3) climb that

asked by shkell on April 23, 2013
19. Language Arts

Please check my answers to these questions: Which of the following is best defined for drama? story with props, story written be performed by actors, and story with a happy ending. My answer is A. Second question What term describes construction onstage

asked by caleb on March 10, 2015
20. Statistics

A true-false test consists of 20 questions, each of which has one correct answer: true, or false. One point is awarded for every correct answer, but one point is taken off for each wrong answer. Suppose a student answers every question by guessing at

asked by AmmanJordan on May 6, 2013
21. math

Michael and mateo begin running around a circular track from the starting point at the same time. it takes Michael 48 seconds one lap around the track. it takes mateo 60 seconds to complete one lap around the track how many minutes does it take before the

asked by Anonymous on November 13, 2018
22. math

Michael and mateo begin running around a circular track from the starting point at the same time. it takes Michael 48 seconds one lap around the track. it takes mateo 60 seconds to complete one lap around the track how many minutes does it take before the

asked by jeffrey on December 15, 2013

Truthfully, the only difference between you and garage floor coatings experts is time. If you'll invest a little more time in reading, you'll be that much nearer to expert status when it comes to garage floor coatings. The coating process is specifically

asked by How to increase the life of Floor on December 10, 2011
24. Statistics

An instructor for a college biology lab has each of her 12 students (you are one of those 12 students) take their own SRS of 25 plants from an experimental field. She lets you know that the heights (measured in cm) of the plants in the field follow a

25. physics(URGENT)

An airliner makes an emergency landing with its nose wheel locked in a position perpendicular to its normal rolling position. The forces acting to stop the airliner arise from friction due to the wheels and from the breaking effort of the engines in

asked by anonymous on November 2, 2013
26. formal writing

Academic papers NEED to be formal so that your professors will take your ideas seriously. You need to be very organized and deliberate in presenting your ideas, and you need to follow all the "rules" of standard English grammar and usage. Here are two

asked by Writeacher on June 14, 2005
27. Psychology

1. The subject of Stanley Milgram's controversial study was ______. groupthink group polarization conformity obedience 2. Based on Milgram's obedience study, it would be expected that a military soldier would be most likely to follow orders to shoot an

asked by Nhi on June 11, 2016
28. science help!!!

1. Seahorses change color and swim together in predetermined ways before mating. These behaviors are called (1 point) asexual reproduction. sexual reproduction. courtship rituals. budding. 2. A male peacock displays his colorful tail feathers in order to

asked by josh on October 18, 2013
29. Can someone check these answers for me?

1. Seahorses change color and swim together in predetermined ways before mating. These behaviors are called (1 point) asexual reproduction.** sexual reproduction. courtship rituals. budding. 2. A male peacock displays his colorful tail feathers in order to

asked by josh on October 18, 2013
30. Kinematics algebra question - Physics 11

I don't know how to even approach this... It's suppose to be on my physics test. A huntsman fires a gun pointing at a monkey hanging on the branch of a tree. The huntsman and the base of the tree are on a flat horizontal. At the moment the huntsman fires

asked by Raylene on November 8, 2013
31. History

Which most accurately describes the involvement of the Catholic Church in the Crusades? (Select all that apply.) the crusade was a term used by the eastern orthodox church to describe its schism from the roman catholic church the knight templar was an

asked by malia on October 9, 2017
32. Physics

A uniform plank of length 5.5 m and weight 219 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the drawing). To what distance x can a person who weighs 447 N walk on the overhanging part of the plank before

asked by Mary on March 21, 2007
33. mayh

A ship travels at a constant speed of 25 kilometres per hour (Kph) in a straight line from port A located at position (x_A, y_A) =(-100, -100) to port B at (x_B ,y_B )=(300 ,100). A) Find parametric equation for the line of travel of the ship .your

asked by emy on February 16, 2011
34. Physics

An 893 kg car passes over a bump in a road that follows the arc of a circle of radius 14.3 meters. A) What force does the road exert on the car as the car passes the highest point of the bump if the car travels 7.53 m/s. B) What is the max speed the car

asked by Ryan on December 4, 2011

Ornithologists have determined that some species of birds tend to avoid flights over large bodies of water during daylight hours. It is believed that more energy is required to fly over water than land because air generally rises over land and falls over

asked by Layla on April 16, 2014
36. physics

I'm making a graph of force vs stretch for springs. I have 7 data trials with the k (F = kx) ranging from 28 to 31, average is 29.6. Now I need to find the slope and write an equation for the graph. If I use the first two points to get the slope, I get a

asked by Kriti on March 17, 2011
37. Chemistry

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

asked by Temmick on November 10, 2013
38. chemistry

25.6mL of ethanol (density =0.789 g/mL) initially at 5.4∘C is mixed with 30.4mL of water (density = 1.0 g/mL) initially at 20.4∘C in an insulated beaker.Assuming that no heat is lost, what is the final temperature of the mixture?

asked by Lisa on September 12, 2014
39. math

Suppose that you are taking a course that has three exams which count for three-fifths of your grade and a final which counts for two-fifths of your grade. On your first three tests your scores on were 84, 72, and 96. To get an B in the course, you must

asked by anonymous on May 9, 2014
40. math

The final math grades for all 6th graders were A: 125, B: 200, C: 350, D: 95, and F: 25. Make a bar graph to display this data. In the box below, write a description of your bar graph.

asked by christina on February 2, 2012

As a computer programmer, you have to define the movements of a battleship across a virtual grid. Will you program the transformation from the original position (Figure I) to the final position (Figure II) as a translation, reflection, or rotation?

asked by jassie on March 31, 2017
42. Physics

PLEASE ANSWER ASAP!!!!!!!!!!!!!!!!!!!!!!! a cross country runner runs 3km due east, 5km due south and 8km south west. what is the runners final displacement?

asked by Tap on July 3, 2012
43. physics

You drop 454 g of solid ice at −35°C into a bucket of water (1,200 g) at 45°C. Eventually, the ice all melts, and the entire system comes into thermal equilibrium. Find the final temperature of the system.

asked by chase on January 25, 2016
44. Calculus

if a penny is dropped from the top of a 320 ft. building, how fast will it be moving when it hits the ground? v2 = u2 + 2gH, Here, u = initial velocity = 0 v = final velocity g = 32ft/s2 H= 320ft So, v2= 0 + 2 × 32 × 320 or,. v = ✓(2×32×32×2×5) or,

asked by kate on June 7, 2017
45. mathematics

just wanted to make sure this answer is correct. I am looking for the decimal place of the number 4 in this number 2.84905 Isn't the 4 in the thousanths place? My brain is fried from this math final. Thanks for your help, it is greatly appreciated.

asked by cindy on August 29, 2010
46. Computer

Need help with small visualization work. Only contact if you know how to use google visualization tools. Please do not spam if you don't know how to do it. Final budget is 15 USD and will be paid after satisfactory verification of work. kgill1945 @ gm dot

asked by kgill on February 11, 2016
47. Chemistry

A buret (initial and final buret reading were 2.20 mL and 11.86 mL) was used to deliver a sample of 2.1E-5 M stock dye into a 25.0 mL volumetric flask. The dye was then diluted with water to exactly 25.0 mL. Calculate the molarity of the resulting

asked by Mallory on October 26, 2010
48. Math

The final math grades for all 6th graders were A: 125, B: 200, C: 350, D: 95, and F: 25. Make a bar graph to display this data. In the box below, write a description of your bar graph.

asked by april on January 25, 2012
49. TRIGONOMETRY

Can someone please show me step by step how to calculate the modulus and the argument for these complex numbers? I have a trig final next week and I am trying to finish this study guide so I am prepared. Thank you so much! If you can, please show my how

asked by Kate on May 17, 2013
50. Thermochemistry

If a chalice made of pure gold weighing 1.24 kg and initially at 15 C is filled with 100.0 mL of water at 89 C, what is the final equilibrium temperature of the system? The heat capacities of water and gold are 75.29 and 25.42 J/mol/K, respectively.

asked by LaurenB on December 2, 2011
51. chemistry

A diesel engine's piston compresses 16 cm3 of fuel-air mixture into 1 cm3. The pressure changes from 1 atmosphere to 48 atmospheres. If the initial temperature of the gas was 305 K, what was the final temperature?

asked by Nikoli on November 2, 2011
52. MATHEMATICS

3 friend's A,B,C went for weekend party to mc Donalad's restruant and there they measure their weights in some oder in 7 rounds. A,B,C,AB,BC,AC,ABC. Final round measure is 155 kg then find the average weight of all the 7 rounds.

asked by SUBRAT KUMAR SAMAL on September 6, 2014
53. english l

which of the following is an example of foreshadowing in "The monkey's paw"? a) herbert says he doesn't see the wished-for money and never will. b)herbert is killed in an accident. c)herbert returns from the dead. d)herbert vanishes when mr.white makes the

asked by cheddie on January 19, 2012
54. Chemistry

What is the molarity of a solution containing 1.23g of LiOH in enough water to give a final volume of 380ml? I know the MW of Li is 6.941, O is 15.9594 and H is 1.00794. Using this info the number of mols in 1.23g of LiOH is 0.05144

asked by Raelene on April 29, 2017
55. math

A diesel engine's piston compresses 16 cm3 of fuel-air mixture into 1 cm3. The pressure changes from 1 atmosphere to 48 atmospheres. If the initial temperature of the gas was 305 K, what was the final temperature?

asked by okay on January 5, 2017
56. physic

A car starts from the origin and is driven 1.3 km south and then 3.5 km in a direction 53° north of east. Relative to the origin, what is the car's final location? Express your answer in terms of a distance and an angle.

asked by Pallavi on February 1, 2016
57. Chemistry

8.1g of XSO4.7H2O crystal when heated at 90degree for 15 minutes gave 6.9g of the salt,which gave 4.9g when heated further at 120degree. If X is 72. Calculate the amount of water of crystallization in the intermediate and final salts. [X=72,S=32,O=16,H=1]

asked by Banko on December 1, 2016
58. physics

Tom exerts a force of 75N horizontally to a skateboarder, Steven's mass is 65kg, for a distance of 2.0m on a frictionless floor. A)How much work did Tom do on Steve? B) What was Steven's final speed?

asked by Rosi3 on May 4, 2016
59. chemistry

Assuming reaction goes to completion, determine the final concentration of NH4Cl in the calorimeter. heat capacity =3.03J/g.c density =1.012 5g of NH4Cl used 100 mL of water used NH4Cl(s) + H2O(l) --> NH4Cl(aq)

asked by john on November 6, 2013
60. physics

The two blocks of masses M and 2M shown above initially travel at the same speed v but in opposite directions. They collide and stick together. What is the final velocity of the mass M after the collision? negative one sixth v. negative one third v. Zero

asked by ashley on February 4, 2014
61. physics

An ideal gas has the following initial conditions: Vi = 490 cm3, Pi = 5 atm, and Ti = 100°C. What is its final temperature if the pressure is reduced to 1 atm and the volume expands to 1000 cm3? ______ °C

asked by Katelyn on November 6, 2016
62. physics

Lora (of mass 42.8 kg) is an expert skier. She starts at 2.3 m/s at the top of the lynx run, which is 114 m above the bottom. What is her ﬁnal kinetic energy at the bottom of the ski run? Answer in units of J

asked by Anonymous on March 22, 2013
63. chemistry

what is the initial temperature (in degrees C) of a system that has the pressure decreased by 10 times while the volume increased by 5 times with a final temperature of 150 K? a)27 b)75 c)300 d)-198 e) none of the above Please explain--I need to know how

asked by Coug on January 3, 2010
64. physics

what impulse occurs when an average force of 10n is exerted on a cart of 2.5 s? What change in momentumdoes the cart undergo/ If the mass of the cart is 2K and the cart is initally at rest, calculate it's final speed.

asked by stan on March 6, 2011
65. Physics

A 1.05 liter flask contains a certain quantity of ideal gas at 305 K. Then an equal number of molecules of the same gas is added to the flask, after which the absolute pressure is 1.55 times its original value. What is the final temperature?

asked by Dave on December 8, 2015
66. thermo

equal masses of ice at 0 oC, water aat 50 oC and steam at 100 oC are mixed and allowed to reach equilibrium. what will be the final temp of the mixture? and what percentage is the water and what percent will be steam??

asked by holly on November 5, 2010
67. thermo

equal masses of ice at 0 oC, water aat 50 oC and steam at 100 oC are mixed and allowed to reach equilibrium. what will be the final temp of the mixture? and what percentage is the water and what percent will be steam??

asked by holly on November 5, 2010
68. physics

52.(52G) A 110-kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 350 N. For the first 15 m the floor is frictionless, and for the next 15 m the coefficient of friction is 0.30. What is the final speed of the crate?

asked by Martha on March 23, 2014
69. physics

An ideal gas has the following initial conditions: Vi = 490 cm3, Pi = 5 atm, and Ti = 100°C. What is its final temperature if the pressure is reduced to 1 atm and the volume expands to 1000 cm3? _____°C

asked by Katelyn on November 2, 2016
70. Math Check

Hi! I posted this question yesterday and it was answered but I forgot to add something else to the directions. Directions: Write the system of equations sequentially so that it will correspond to the final matrix. Matrix: [-10 2 | 48] [-5 -6/4 |-9] My

asked by Yuri on March 25, 2015
71. Physics

On a frictionless table, a 3kg block moving 4m/s to the right collides with an 8kg block moving 1.5m/s to the left. If the blocks stick together, what is the final velocity? How much mechanical energy is dissipate in the collision?

asked by ABC on January 1, 2013
72. Chemistry

For the reaction NaOH + HCl---> H20 + NaCl where the mass of NaOH is 2g and the Volume of Hcl is 100ml with a 0.5 concentration. The initial temp is 25 and the final is 35, what is the amount of energy absorbed by the solution?

asked by Hyde on May 4, 2010
73. Maths ..Equations

Hi I have to rearrnge the following to make y the subject.. x = 3 - 2y / 6 I get the first part do x 3, - 2, and / 6. Undo x 6, + 2, and / 3 then multiply by 6 so, 6x = 3 - 2y add 2 to both sides, 6x + 2 = 3 the divide both sides by 3 6x + 2 = y ------- 3

asked by Leo on December 10, 2007
74. Chemistry

At equilibrium, the concentrations in this system were found to be [N2]=[O2]=0.100 M and [NO]=0.500 M. The balanced chemical equation is N2+O22NO. If more NO is added, bringing its concentration to 0.800 M, what will the final concentration of NO be after

asked by Dee on April 2, 2013
75. Chemistry

A person wanted to purchase products at a store (\$43.99) and wanted to use a coupon for 20% off. What would be the final total when the coupon is used on the item and the sales tax (11%) is added? Remember significant figures in your calculations.

asked by Emily on September 24, 2018
76. Mathematics

Mr.Zia borrows rs .25,000today with interest at 12%compounded annually .he agrees to pay rs.20,000 two years from today and the balance three years from today.find the amount of the final payment?

asked by Ahana malik on January 23, 2017
77. Chem

A student mixed 6 g of ice at -3.4 degrees celsius with 1 g of steam at 103 degrees celsius. What was the final temperature of this mixture.i tried equalling mcdelta T. Please help asap. I would be eternally grateful. Please answer in kj or J only

asked by Martin on October 19, 2016
78. Physics

You drop 378 g of solid ice at −35°C into a bucket of water (1,200 g) at 45°C. Eventually, the ice all melts, and the entire system comes into thermal equilibrium. Find the final temperature of the system.

asked by Sierra on July 31, 2012
79. Chemistry

A metal, M, of atomic weight 96 u reacts with fluorine to form a salt that can be represented as MFx. In order to determine x and therefore the formula of the salt, a boiling point elevation experiment is performed. A 10.9 g sample of the salt is dissolved

asked by someone on March 4, 2017

1. Which of the following describes the behavior of f(x)=x^3-x A. Relative maximum: x=0 B. Relative maximum: x=(1/sqrt(3)); Relative minimum: x=(-1/sqrt(3)) C. Relative maximum: x=(-1/sqrt(3)); Relative minimum: x=(1/sqrt(3)) D. Relative minimum: x=0 E.

asked by Anonymous on January 12, 2015
81. Managerial Economics

Consider the Linear demand function Q = 20 - 0.5P c- Using calculus, find the level of output, Qrmax, where total revenue reaches its maximum value. What price Prmx maximizes total revenue? What is the value of TR at this maximum point. d- Write the

asked by alejandro guzman on March 12, 2013
82. Physics

The maximum depth of Lake Baikal, in Russia, is 1637 m, making it the world's deepest freshwater lake. If a beam of light with an angle of incidence of 60.0 degrees enters the water from the air, what is the horizontal distance between the point where the

asked by Ashley on February 19, 2011
83. Physics

A block slides down an incline. As it moves from point A to point B, which are 5.0 m apart, a force F acts on the block, with magnitude 2.1 N and directed down the incline. The magnitude of the frictional force acting on the block is 10 N. If the kinetic

asked by John on March 13, 2011
84. Trig

A weight is oscillating on the end of a spring. The position of the weight relative to the point of equilibrium is given by y=1/12(cos8t-3sin8t), where y is the displacement (in meters) and t is the time (in seconds). Find the times when the weight is at

asked by Nicole on October 27, 2014
85. Neuroscience

You continue to record the spikes of a ganglion cell. Even in total darkness, there is some nonzero rate of spiking (sometimes called “spontaneous” spiking). When you shine light at a particular point (let’s call it Q) in the retina, the rate of

asked by qwerty on November 26, 2014
86. Art

Could you please help me find examples of phrasal verbs used in phone calls? Thank you, Writeacher. 1) You can call me up whenever you want to. Shall I ask him to call you back? 2) The line is engaged. Would you like to hang on/hold on? Hang on, I'll put

asked by Frank on May 4, 2012
87. Math

Assuming that a typical popular music CD comprises 12 songs each of 8500 KB, what would the effective transmission speed need to be capped at in order to extend the download time to 2 hours? Express your final answer in bits per second, using scientific

asked by DezQ on May 27, 2010
88. computer science

Assuming that a typical popular music CD comprises 12 songs each of 8500 KB, what would the effective transmission speed need to be capped at in order to extend the download time to 2 hours? Express your final answer in bits per second, using scientific

asked by SRay on May 23, 2010
89. chemistry

C3H8 (g) + 5O2 (g) 3CO2 + 4HOH If such an oxidation is carried out on a gaseous mixture prepared by mixing 6.1 grams of propane and 11.0 L of oxygen measured at 1.0atm and 150 degrees celcius, what will be the total final volume under the same conditions

asked by mackenzie on January 2, 2012
90. computer science

Assuming that a typical popular music CD comprises 12 songs each of 8500 KB, what would the effective transmission speed need to be capped at in order to extend the download time to 2 hours? Express your final answer in bits per second, using scientific

91. math

Assuming that a typical popular music CD comprises 12 songs each of 8500 KB, what would the effective transmission speed need to be capped at in order to extend the download time to 2 hours? Express your final answer in bits per second, using scientific

92. physics

A patient is going to be prescribed bifocals which will be 2.50 cm from the eye. The prescribed powers (in diopters) for the bifocals are +1.60 and -0.40, and these bifocals give the patient normal vision. (a) Without the bifocals, what is the patient's

asked by m on February 7, 2013
93. Physics

Robert constructs the apparatus shown and slides a block down a slope that is without friction until the block reaches the section, L, of length 1.85 m, which begins at height h2 = 2.0 m on a ramp of angle 30.0°. In that section, the coefficient of

asked by Alexis on November 15, 2016
94. Chemistry

A student mixes 5.0 mL of 0.00200 M Fe(NO3)3 with 5.0 mL 0.00200 KSCN. She finds that the concentration of FeSCN2+ in the equilibrium mixture is 0.000125 M. Follow these steps to determine the corresponding experimental value of Kc for the reaction of Fe3+

asked by anon on March 10, 2015
95. Algebra

PLease help I am struggeling You roll a number cube numbered one to six 12 times. P(5) = two over three. What type of probability is illustrated and why? (1 point) Unselected answer (0 pts) experimental; the result is based on the number of possible

96. Calc

1. Find values of a,b,c, and d such that g(x) = a(x^3)+b(x^2)+cx+d has a local maximum at (2,4) and a local minimum at (0,0) 2. Need someone to explain this. Graph a function f(x) for which: f(3)=f(5)=0 f'(x)4 f"(x)>0 for all x I know there is concave

asked by Aurora on June 20, 2007
97. Calculus 3

1. An object moves along a straight track from the point (1,−2,1) to the point (0,−7,5). The only force acting on it is a constant F=2i−3j−5k newtons. Find the work done if the distance is measured in meters. 2. A wrench 0.5 meters long lies along

asked by jagga on September 22, 2015
98. chemistry

I would love some input on a few problems, listed below. My answers follow the questions 1. Would it be feasable to store a solution of lead nitrate in a container of metallic zinc? Why or why not? No, it would not. A chemical reaction takes place, as the

asked by delany on July 3, 2008
99. chemistry

I would love some input on a few problems, listed below. My answers follow the questions 1. Would it be feasable to store a solution of lead nitrate in a container of metallic zinc? Why or why not? No, it would not. A chemical reaction takes place, as the

asked by delany on July 2, 2008
100. Math

The path of a satellite orbiting the earth causes it to pass directly over two tracking stations A and B, which are 35 mi apart. When the satellite is on one side of the two stations, the angles of elevation at A and B are measured to be 87.0° and 84.2°,

asked by Jennifer on June 22, 2016