1)Find the sixth term of the geometric sequence for which a1=5 and r=3 A)1215 B)3645 C)9375 D)23 I chose A 2)Write an equation for the nth term of the geometric sequence -12,4,-4/3... A)aN=-12(1/3)n-1 B)aN=12(-1/3)n-1 C)aN=-12(-1/3)-n+1 D)aN=-12(-1/3)n-1 I chose C 3)Find

93,362 questions, page 679
1. Algebra I

Find the slope of any line parallel to the line through points (19,1) and (10,2). I have come up with the slope of that line which should be 1/-9, but beyond that I'm lost.

asked by Katie on August 23, 2007
2. Math

A number divided by 14 is 6. Find the number. Use a let statement. Write the equation. Let x = number divided so X= 14/6 X= 2.33

asked by Meagieting on October 9, 2012
3. Math HELP!

The length of the hypotenuse of a right triangle is 15 ft. The length of one leg is 9 ft. Find the length of the other leg. A. 6 ft. B. 21 ft. C. 12 ft. D. 18 ft. Is the answer C? Thank you

asked by Callie on November 5, 2014
4. math

The length of the hypotenuse of a right triangle is 26 cm the length of one leg is 24 cm. find the length of the other leg? is the answer 10?

asked by Mel❤nie on December 19, 2018
5. Math

If 19 be added to fourt times a certain number the result is 4 less than three times of the number find the number

asked by Shadab on January 18, 2017
6. Math

use the table below to answer the question that follows. n 2 4 6

asked by The Weekend on May 16, 2017
7. geometry

An angles measure is 3 times of its complement. find the measure of the angle and the measure of its complement.

asked by niki on August 30, 2011
8. math

you have 2 positive numbers. One number is one-fifth of the other number.The difference between the two numbers is 152, find the numbers.

asked by paul on September 2, 2015
9. math

6. The length of the hypotenuse of a right triangle is 15 cm. The length of one leg is 9 cm. Find the length of the other leg. 6 cm 12 cm 17 cm 144 cm

asked by hard questions PLZZ answer! on November 29, 2012
10. math

the difference between the sum of the two numbers and the difference of the two numbers is 6.Find the larger of the two numbers if their product is 15

asked by Sifat on May 28, 2016
11. math

Given that triangle ABC is congruent to triangle RST, AB=x, BC=x+2, AC=x+4 and RS=2x-7, find the perimeter for triangle ABC.

asked by kenzi on May 29, 2016
12. Algebra 1

The sum of the two digit number is 7. The ten digit is one less than 3 times the one digit. Find the number.

asked by Bella on June 28, 2011
13. Trigonometry

find the angle theta between two vectors v=-sq. root of 3/2 i+-square root of 3 / 2 j and w=4 square root of 3 i +4j

asked by steve on December 7, 2013
14. algebra

The perimeter of a triangle is 47 miles. The first side is 5 miles less than twice the second and the third is 2 miles more than the first. Find the lengths of each side.

asked by Chris on March 28, 2013
15. Calculus

Find dy/dx for y=sin(x+y) A. 0 B. (cos(x+y))/(1-cos(x+y) C. cos(x+y) D. 1 E. None of these I know I'm supposed to use implicit differentiation but I'm not sure how to go about it with sin

asked by Anonymous on November 30, 2014
16. Math11U

A Pythagorean Triple is a set of integers that satisfy the Pythagorean Theorem, c squared= a squared + b squared. 3,4,5 and 5,12,13 are just two of many examples. Find another, that is not a multiple of the one of the two given, using the following

asked by Kitkat on July 25, 2010
17. Physics

A projectile is launched from ground level to the top of a cliff which is 195m away and 135m high (as shown in the figure ).If the projectile lands on top of the cliff 6.9s after it is fired, find the initial velocity of the projectile a)magnitude

asked by Jannie on September 12, 2009
18. Student teacher needs your help

Hello, I am planning to teach my 5th grade class how to write a persuasive letter to the President of the United States. However, I need to show them a few examples of how other students wrote their persuasive letters about particular issues. Where online

asked by Thea on November 27, 2008
19. Geometry

Crazy hard question I don't get: "A sphere with radius 3 is inscribed in a conical frustum of slant height 10. (The sphere is tangent to both bases and the side of the frustum.) Find the volume of the frustum." I need a proof for this, and I don't know

asked by Sheenybeany on July 29, 2014
20. Math

The Rosana family decided to put in a patio and a garden in their backyard. The next part shows a rectangle with a base of 8 and height of 4. It also has about 1/3 of the rectangle shaded and is labeled "Garden" I tried multiplying 4 x 8, then dividing by

asked by May on November 16, 2016
21. science

A steel strip, clamped at one end, vibrates with a frequency of 20 Hz and a amplitude of 5 mm at the free end, where a small mass of 2 g is positioned. Find (i) the velocity of the end when passing through the zero position, (ii) the acceleration at

asked by Ali on March 30, 2019
22. Chemistry

What is the pH of a buffer solution that is made by adding 21.0 grams of sodium fluoride to 1.00 Liter of 0.15M hydrofluoric acid? (see the Table above for the Ka of hydrofluoric acid; calculate the pH to 2 decimal places) hint: you will have to find the

asked by D.J. on June 17, 2013
23. Physics

The ends of a light string are tied to two hooks A and B in a ceiling which are 100 cm apart horizontally so that the length between hooks is 140 cm. A 650g mass is then attached by a second length of string to a point C on the first, 80 cm from A, and

asked by Tiffany on November 8, 2012
24. Algebra

Rod is a pilot for Crossland Airways. He computes his flight time against a headwind for a trip of 2900 miles at 5 hr. The flight would take 4 hr and 50 min if the headwind were half as great. Find the headwind and the plane’s air speed. Please help me

asked by Julissa on November 22, 2008
25. free-body diagram help

A 20.0 kg block is being pushed forward on a flat surface with a force of magnitude 45.0 N against a frictional force of 13.0 N To draw this free-body diagram, would I only have the forces mentioned in the question? or would i include the -9.8m/s^2 force

asked by Liz on April 13, 2014
26. physics

A criminal is escaping across a rooftop and runs off the roof horizontally at a speed of 5.0 m/s, hoping to land on the roof of an adjacent building. Air resistance is negligible. The horizontal distance between the two buildings is D, and the roof of the

asked by anonymous on February 3, 2014
27. physics

In an arcade game a 0.142 kg disk is shot across a frictionless horizontal surface by compressing it against a spring and releasing it. If the spring has a spring constant of 174 N/m and is compressed from its equilibrium position by 8 cm, find the speed

asked by rm on December 25, 2011
28. physics

A 14.0-m uniform ladder weighing 510 N rests against a frictionless wall. The ladder makes a 59.0Â° angle with the horizontal. (a) Find the horizontal and vertical forces the ground exerts on the base of the ladder when an 830-N firefighter has climbed

asked by Anonymous on April 26, 2017
29. physics

Kevin has a mass of 77.5 kg and is skating with in-line skates. He sees his 21.00 kg younger brother up ahead standing on the sidewalk, with his back turned. Coming up from behind, he grabs his brother and rolls off at a speed of 2.18 m/s. Ignoring

asked by Anonymous on January 12, 2015
30. Physics

A soccer play kicks the ball toward a goal that is 29m in front of him. The ball leaves his foot at a speed of 19m/s and at an angle of 32degrees above the ground. Find the speed of the ball when the goalie catches it in front of the net. my work: vxi=16.1

asked by Morgan on October 30, 2016
31. Analytical Chemistry

How do I find the mass of KHP? 0.5050 grams of KHP was used and placed into a 250mL volumetric flask and diluted to the mark with distilled water. 50.00mL of this KHP solution was placed in a 250mL beaker. It took 14.75mL of 0.0067M of NaOH to reach the

asked by Linda on July 20, 2011
32. English/Poerty

Is this poem good? How can I make it better? As I read the stories I find out about her dark past Some are hard to believe Now I see her in a different way A way I’ve never looked at her before I don’t know what to say to her Now that I know what I

asked by Abril on January 4, 2008
33. physics

A criminal is escaping across a rooftop and runs off the roof horizontally at a speed of 5.1 m/s, hoping to land on the roof of an adjacent building. Air resistance is negligible. The horizontal distance between the two buildings is D, and the roof of the

asked by chelsea on January 31, 2012
34. math

Consider the experiment of drawing two cards from a deck in which all pictures cards have been removed and adding their values (with ace =1). A. Describe the outcomes of this experiment. List the elements of the sample space. B. What is the probability of

asked by Rachael on August 18, 2013
35. Physics

How do I find out how much heat it takes to raise the temperature of 100 grams of aluminum from 50 degrees celcius to 80 degrees celsius. The specific heat is 900j/kg First I did 100*30*900 and it equalled 2,700,000. that seems to high, is it? I then

asked by Carissa on June 27, 2010
36. math

an airline company offers a round-trip group flight from New York to London. If x people sign up for the flight, the cost of each ticket is to be 1000-2x dollars. Find the maximum revenue the airline company can receive from the sale of tickets from the

asked by Emily on January 8, 2017
37. physics

Starting from a trail 1.0m above the water level, you climb straight up a cliff to a point 15m above the water. You then shallow dive into the water and climb back to the trail. Find your displacement (Δx) as well as the distance (d) you covered (not

asked by dan on September 23, 2018
38. statistics

A purchasing agent wants to estimate the mean daily usage of rye flour. She takes a sample for 50 straight days and find that the sample mean is 180 lbs with a sample standard deviation of 38.5 lbs. a)State the 90% confidence interval for the mean.b) State

asked by Lynn on June 13, 2012
39. physics

A criminal is escaping across a rooftop and runs off the roof horizontally at a speed of 4.6 m/s, hoping to land on the roof of an adjacent building. Air resistance is negligible. The horizontal distance between the two buildings is D, and the roof of the

asked by Kristyn on March 28, 2015
40. Physics (Checking answe)

Sorry for re-posting but I need to know if I did it right, please help, I worked out the problem I just want to know if I did it right. A shopper in a supermarket pushes a cart with a force of 35 N directed at an angle of 52(angle sign here) downward from

asked by Edwin on October 24, 2010
41. Statistics

A researcher claims that at least 10% of all football helmets have manufacturing flaws that could potentially cause injury to the wearer. A sample of 200 helmets revealed that 24 helmets contained such defects. a. Does this finding support the

asked by Josh on July 19, 2012
42. Chemistry

What if when I find my product, I get the same compound as I did in my reactant? For example, FeCl3 + HCl ->FeCl3 + HCl. Then something is wrong. In this case, FeCl3 and HCl usually don't react. In very concentrated solutions of HCl, the FeCl4^- or

asked by Sally on October 21, 2006
43. Physics

When a butterfly lands 12 cm from a concave mirror, it's image is 18 cm behind the mirror. Find the focal length 1/f=(1/do)-(1/di) 1/f=(1/12)-(1/18) 1/f=0.0833-0.0555 1/f=0.0277 f=36 I'm pretty confident w/ my math but as I understood, it's do-di if it's

asked by Kayla on June 17, 2017
44. physics

A criminal is escaping across a rooftop and runs off the roof horizontally at a speed of 5.6 m/s, hoping to land on the roof of an adjacent building. Air resistance is negligible. The horizontal distance between the two buildings is D, and the roof of the

asked by Anonymous on February 5, 2011
45. statistics

A card is to be chosen at random from a shuffled deck. Find the probability that the card drawn is a)the queen of clubs, given that it is an honor card. (I think it is a typo) b) a red four, given that the face number is even. c) a seven, given that the

asked by Anonymous on November 6, 2007
46. Physics

A closed box is filled with dry ice at a temperature of -81.5 C, while the outside temperature is 27.4 C. The box is cubical, measuring 0.307 m on a side, and the thickness of the walls is 4.47 × 10-2 m. In one day, 3.37 × 106 J of heat is conducted

asked by <3 on April 21, 2013
47. Chemistry

1) find the hydronium ion concentration, the hydroxide ion concentration and the pH of a 0.000001 M solution of NaOH. 2) which of salts hydrolyze in aqueous solution : (NH4)2S, Na2So3,(CH3COO)2Ca? Write the ionic equationss for the hydrolysis reacrions.

asked by Alper on April 16, 2018
48. science

The mean weight of 500 male students at a certain college is 151 pounds (lb), and the standard deviation is 15 lb. Assuming that the weights are normally distributed, find the probability of students weight (a) between 121 and 155 lb (b) more than 185 lb.

asked by suhad on February 22, 2013
49. math corrections

9. A rectangular field 50 meters in width and 120 meters in length is divided into two fields by a diagonal line. Find the length of fence in meters required to enclose one of these fields? A.130 B.170 C.180 D.200 E.300 Choice A is wrong.

asked by vincent on August 14, 2014
50. Math

Consider the experiment of drawing two cards from a deck in which all picture cards have been removed and adding their values (with ace = 1). A. Describe the outcomes of this experiment. List the elements of the sample space. B. What is the probabilit of

asked by Rachael on August 17, 2013
51. Calc

Set up an exponential function to model each real world situation then use it to find the requested values. The half-life of Carbon 14 is about 5700 years. You begin with 800 grams of this isotope. 1) Function: 2) How much Carbon 14 is there after: a)

asked by Issac on November 19, 2015
52. physics

In an arcade game a 0.099 kg disk is shot across a frictionless horizontal surface by compressing it against a spring and releasing it.If the spring has a spring constant of 244 N/m and is compressed from its equilibrium position by 4 cm, find the speed

asked by Anonymous on March 18, 2013
53. math

Consider the experiment of drawing two cards from a deck in which all pictures cards have been removed and adding their values (with ace = 1). A. Describe the outcomes of this experiment. List the elements of the sample space. B. What is the probability of

asked by Rachael on August 17, 2013
54. Math

A plane leaves an airport A (38.5N, 37.05W) and flies dues North to a point B on latitude 52N (a) Find the distance covered by the plane (b) The plane then flies due east to a point C, 2400km from B. Determine the position of C Take the value âˆ of as

asked by Kid on April 15, 2018
55. Calculus

Find the volume of the solid obtained by revolving the region x=(y-2)^2, the x-axis, the y-axis, about the x-axis. So I understand that you're supposed to use disc method; however, idk where I evaluated wrong. My final answer is 136π/3, but according to

asked by Mike on December 17, 2018
56. physics

A projectile is launched from ground level to the top of a cliff which is 195 m away and 155 m high. If the projectile lands on top of the cliff 9.2 s after it is fired, find the initial velocity of the projectile (magnitude and direction). Neglect air

asked by Sam on September 22, 2010
57. biology

A toxin from a poisonous mushroom has been identified as a hydrophobic weak acid. It somehow can find its way to the inner membrane of mitochondria where it gets protonated on the outer surface of the membrane but deprotonated on the inner surface of the

asked by pete on April 29, 2015
58. math

Assume the average height and weight of a female in your math class is 5'5" and 140 pounds. Use this information to write a variation equation then use it to find the weight of the female below if they had the same body type as the average female. Round

asked by andrea on August 19, 2013
59. Algebra 2 honors

Yuki wants to make a reduced-size copy of a drawing. The original drawing is 14inches long. Yuki's copier can only reduce by 75%. Find the length of a copy after Yuki reduces it 4 times at 75% each time. Round your answer to the nearest hundredth of an

asked by David Jamil on March 10, 2016
60. Physics

A projectile is launched from ground level to the top of a cliff which is 195 m away and 155 m high. If the projectile lands on top of the cliff 9.2 s after it is fired, find the initial velocity of the projectile (magnitude and direction). Neglect air

asked by Sam on September 23, 2010
61. accounting

Visit any commercial bank in your city.Meet the staff and find out yhe procedure for opening a savings bank account.What facilities are available under an account?How frequently can money be deposited and withdrawn from a savings account?What are the

asked by Akshay on July 12, 2009
62. physics

A soccer player kicks the ball toward a goal that is 27.8 m in front of him. The ball leaves his foot at a speed of 18.5 m/s and an angle of 30.4° above the ground. Find the speed of the ball when the goalie catches it in front of the net. (Note: The

asked by Kelly on January 26, 2012
63. math

A steel strip, clamped at one end, vibrates with a frequency of 20 Hz and a amplitude of 5 mm at the free end, where a small mass of 2 g is positioned. Find (i) the velocity of the end when passing through the zero position, (ii) the acceleration at

asked by Anonymous on May 18, 2013
64. Chemistry (Check)

Completion 1) 2)6.02 X 1023 Chemists relate units of counting, of mass, and of volume to a single quanity called the _______. The number of representative particles in a mole of a substance is _______. mole. 6.02*10^23 to find the mass of a mole of a

asked by Bryan on February 4, 2007
65. Calculus

A Norman window has the shape of a rectangle surmounted by a semicircle. (Thus, the diameter of the semicircle is equal to the width of the rectangle.) If the perimeter of the window is 20 ft, find the dimensions of the window so that the greatest possible

asked by Anonymous on November 26, 2017
66. physics

⦁ A criminal is trying to escape across a rooftop and runs off the roof horizontally at a speed of 4.9 m/s, hoping to land on the roof of an adjacent building. Air resistance is negligible. The horizontal distance between the two buildings is D, and the

asked by chidera on September 15, 2014
67. Calculus

A Norman window has the shape of a rectangle surmounted by a semicircle. (Thus, the diameter of the semicircle is equal to the width of the rectangle.) If the perimeter of the window is 20 ft, find the dimensions of the window so that the greatest possible

asked by Emily on November 26, 2017
68. Physics

An ice sled powered by a rocket engine starts from rest on a large frozen lake and accelerates at +13.0 m/s^2. At t1 the rocket shut down and the sled moves with constant velocity v until t2. The total distance traveled by the sled is 5.30 x 10^3m and the

asked by Kahlei on August 31, 2010
69. calculus A

A particle moves according to a law of motion s = f(t) = t3 - 12t2 + 21t, t 0, where t is measured in seconds and s in feet. v(t) = 3t^2 - 24t 21 a(t) = 6t - 24 e) Find the total distance traveled during the first 8 s. i) When is the particle speeding up?

asked by sohee on February 17, 2015
70. pre-calc

A ship travels 200km west from port and then 240km due south before it is disabled. Illustrate this in a vector diagram. Usa trigonometry to find the course that a rescue ship must take from port in order to reach the disabled ship. i don't know where to

asked by Devon on March 30, 2008
71. Algebra 2

Can someone please check my answers? Find the probability of drawing the given cards from a standard dick of 52 cards (a) with replacement and (b) without replacement. 1.A red card, then a black card a. 1/4 b. 13/51 2.A ten, then the ace of hearts a. 1/676

asked by Jane on February 9, 2014
72. Physics - Mechanics and Ocsillatory Motion

An 8.70 kg block slides with an initial speed of 1.56 m/s up a ramp inclined at an angle of 28.4 with the horizontal. The coefficient of kinetic friction between the block and the ramp is 0.62. Use energy conservation to find the distance the block slides

asked by Sara on November 10, 2010
73. Trig

Charo is 50 feet from the tallest totem pole, located in Alberta Bay, Canada, which has a height of 173 feet. If Charo’s eyes are 5 feet from the ground, find the angle to the nearest degree of elevation for her line of sight to the top of the totem.

asked by Anonymous on May 29, 2014
74. chemistry

What is the concentration of the Mg2 ion in solution when [CO3-2] = 0.25M given that the Ksp= 6.82 x 10-6 for the following reaction MgCO3-------->Mg +. CO32- Chemistry - DrBob222, Friday, November 11, 2011 at 5:34pm Ksp = (Mg^2+)(CO3^2-) Substitute 0.25M

asked by Monique on November 12, 2011
75. physics 221

Question Part Points Submissions Used An 8.61-kg block slides with an initial speed of 1.72 m/s down a ramp inclined at an angle of 27.4° with the horizontal. The coefficient of kinetic friction between the block and the ramp is 0.73. Use energy

asked by Anonymous on October 12, 2012
76. english

I need to know how to find the plot in a poem. The poem is "The Passionate Shepherd to His Love" by Christopher Marlowe http://en.wikipedia.org/wiki/Plot_%28narrative%29 Scroll down to the list in Typical plot structure and see how the events in this poem

asked by april on April 13, 2007
77. Math

An open-topped box is constructed from a piece of cardboard with a length 2 cm longer than its width. A 6 cm square is cut from each corner and the flaps turned up from the sides of the box. If the volume of the box is 4050 cm3 , find the dimensions of the

asked by Aria on March 24, 2015
78. Physics 1

A criminal is escaping across a rooftop and runs off the roof horizontally at a speed of 5.0 m/s, hoping to land on the roof of an adjacent building. Air resistance is negligible. The horizontal distance between the two buildings is D, and the roof of the

asked by anonymous on February 3, 2014
79. Followup-Calculus-Extrema

Find and classify the relative maxima and minima of f(x) if f(x)= defint a=0 b=x function= t^2-4/(1+cos(t)^2) dt x^2-4/(1+cos(x)^2)= 0 x^2-4=0 x^2=4 x= +/- 2 So I got relative maximum as -2 and 2. And relative minimum as zero. However, when I graph it on

asked by Eric on May 17, 2013
80. math

Consider the experiment of drawing two cards from a deck in which all picture cards have been removed and adding their values (with ace = 1). a. Describe the outcomes of this experiment. List the elements of the sample space. b. What is the probability of

asked by jonsson on January 15, 2013
81. physics

In an arcade game a 0.135 kg disk is shot across a frictionless horizontal surface by compressing it against a spring and releasing it. If the spring has a spring constant of 155 N/m and is compressed from its equilibrium position by 7 cm, ﬁnd the speed

asked by physics on November 28, 2012
82. math , probability

Jack has a collection of 10 pairs of gloves in his wardrobe. Before a business trip, he has to pack his luggage, and he selects 8 gloves, without looking at them. We assume that any set of 8 gloves is equally likely to be chosen. Find the probability that

asked by anon on August 29, 2019
83. Physics

A knight sits on a castle wall during a siege.To while away the time, he notes that boulders catapulted from below land on the top of his wall with a vertical velocity of 5.7 m/s. If he is 45 m above the catapult, what is the initial velocity of the

asked by Jacob on November 4, 2015
84. Physics

This is a vector problem. A man starts at home and runs 5 miles north and then 5 miles in a direction 23 degrees south of west. Now he wants to go back home in a straight line. How far does he need to go and in what direction? so i found that the

asked by Sandy on September 23, 2014
85. Cryptography

I have to find the deciphering multiplier for a multiplication cipher given, Cq=Pi so q goes to i / 17 goes to 9 I plugged it into the equation 17a = 9(mod 26) then solved using the inverse of 17 to reduce so 23 (17)a = 23 (9)(mod 26) this left me with

asked by Victoria on September 27, 2015
86. chemistry

What is the pH of a buffer solution that is made by adding 21.0 grams of sodium fluoride to 1.00 Liter of 0.15M hydrofluoric acid? (see the Table above for the Ka of hydrofluoric acid; calculate the pH to 2 decimal places) hint: you will have to find the

asked by dennis on June 16, 2013
87. chemistry

What is the pH of a buffer solution that is made by adding 21.0 grams of sodium fluoride to 1.00 Liter of 0.15M hydrofluoric acid? (see the Table above for the Ka of hydrofluoric acid; calculate the pH to 2 decimal places) hint: you will have to find the

asked by Dennis on June 16, 2013
88. physics

A 6000kg truck travelling north at 5m/s collides with a 4000kg truck moving west at 15m/s,if the two trucks remain locked together after collision,find (a)with what speed and in what direction do they move immediately after collision?(b)what is the lost of

asked by Anonymous on April 1, 2017
89. stat

A company installs 5000 light bulbs, each with an average life of 500 hours, standard deviation of 100 hours, and distribution approximated by a normal curve. Find the percentage of bulbs that can be expected to last the period of time. 77) At least 500

asked by Anonymous on November 25, 2010
90. Math

Find X 27^4x-2=243^3x=6 Please Explain Thanks Is this a repeat of the problem you posted earlier? If so, it should be 274x-2 = 2433x+6 You might try it the hard way. (4x-2)*log 27 = (3x+6)*log (243) Solve for x. I get -12. Post your work if you get stuck.

asked by K on November 28, 2006
91. statistics

Can someone please tell me how I miss this, I added them up 29 and divided by 8 and came up with 3.625. Below is the question. Please don't send me to other sites and just explain why it is wrong. The number of children, x, belonging to each of eight

asked by Sue on May 24, 2013
92. Theory of machine

A punching machine carries out 5 holes per minute. Each hole of 30 mm dia in 40 mm thick plate requires 10 NM of energy per mm^2 of the sheared area. The punch has a stroke of 90 mm. find the power of the motor required if the mean speed of the flywheel if

asked by Dhilsath on August 1, 2012
93. stats

This past summer the LifeSaving Society did a survey about who was at risk in the water, with the goal of reducing swimming accidents. (Globe and Mail July 15 2010) Consider a similar study done that shows that 96 % of those born in Canada can swim but

asked by az on October 2, 2010
94. Chemistry

What is the molality of each of the following solutions? 1)Dissolve 0.610 mol of citric acid, C6H8O7, in 1.35 kg of water. 2) Dissolve 0.200 mg of KBr in 5.50 mL of water. 3) Dissolve 4.05 g of aspirin, C9H8O4, in 145 g of dichloromethane, CH2Cl2. For some

asked by Rach on November 19, 2015
95. Russian History

This is the forth day of doing my unit test(Social Studies 7 B~Northern Eurasia Unit Test~Unit 3~Reach Cyber) with constant studying and reaserch but this is the last question I need answered "Describe some effects of the rise of communism in the Soviet

asked by Conections academy kid on February 28, 2019
96. trigonometry (MathMate)

MathMate i would really appreciate if you can show me where the logarithms can be used.I know they are unnecessary and I already found the answer without them but i still have to show my work using logarithms and they just confuse me. I also have most

asked by anon on February 21, 2011
97. math

For 4.95 seconds , a particle moves in a straight line according to the position function: s(t) = e^t(5-t)-5 . a. when id the particle at rest ? when is particle moving forward ? b. Find the total distance traveled by the particle in intervals [0,1]

asked by Anonymous on November 7, 2013
98. math

If a ball is thrown into the air with a velocity of 48 ft/s, its height in feet t seconds later is given by y = 48t − 16t2. (a) Find the average velocity for the time period beginning when t = 2 and lasting for each of the following. (i) 0.5 seconds ft/s

asked by Dann on January 31, 2018
99. calculus

If a ball is thrown into the air with a velocity of 48 ft/s, its height in feet t seconds later is given by y = 48t − 16t2. (a) Find the average velocity for the time period beginning when t = 2 and lasting for each of the following. (i) 0.5 seconds ft/s

asked by Dann on January 31, 2018
100. Physics

A mass and spring are arranged on a horizontal, frictionless table as shown in the figure below. The spring constant is k = 480 N/m, and the mass is 4.8 kg. The block is pushed against the spring so that the spring is compressed an amount 0.31 m, and then

asked by Tarra on February 23, 2012