# 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 138
1. ## maths

the heights of female students at a particular college are normally distributed with the mean 169 cm and standard deviation 9 cm. 1) Given that 80% of these female students have a height less than h cm ,find the value of h. 2) Given that 60% of these

asked by harish on February 13, 2013
2. ## Travel and tourism/geography

I need to write a report on the garden route, in South Africa but I can't find the information I need. What is the garden route? Which towns form part of the garden route? Where can I find all the information I need?

asked by Zara on August 1, 2009
3. ## math

Let the total cost function C(x) be defined as follows. C(x) = 0.0008x3 - 0.04x2 + 99x + 4400 Find the average cost function C. C(x) = ?? Find the marginal average cost function C '. C '(x) = ??

asked by Kaleia on March 22, 2013
4. ## chemistry

i am trying to find the average rate of h2? from mastering chemistry home work. part a answer was 0.027m/s and part b answer was 0.054m/s. i cant find part c home answer

asked by Tasha on April 19, 2011
5. ## algebra

Town has popultion of 5,000.Number of people infected after t days with a disease is N(t) = 5000/1 + 21.7e^-0.4t Find number initially infected find number infected after 12 days

asked by Anil on November 6, 2011
6. ## Math

Shelly wants to plant 6 rows of flowers with 7 flowers in each row. What addition equation and what multiplication equation can she write to find how many flowers she needs to plant? Which equation do your find easier to use ? Why ?

asked by Hamsa on December 7, 2016
7. ## Physics

Consider the rods plus disc system shown in the Figure. The rod has a length L =0.50 m, and mass M = 0.270kg. The large disc has a radius of R = 0.130m and mass m=0.810kg. The second disk should be treated as a point mass of 0.405kg. It is glued to the rod

asked by Serena on November 3, 2014
8. ## math(mechanics 1)

a car traveling on a straight road accelerates uniformly at a meter per second square from its initial speed of 20 meter per second until it reaches a speed of 30 meter per second. the car travels at this speed for 600 meter and then decelerates uniformly

asked by maha on March 4, 2012
9. ## math

weloo Consider the two parabolas :y1=2x^2-3x-1 and y2=x^2+7x+20. (a) Find the points of intersection of the parabolas and decide which one is greater than the other between the intersection points. (b) Compute the area enclosed by the two parabolas. (c)

asked by weloo_volley on May 8, 2012
10. ## English

an adverb may also appear directly in front of the verb or at the very beginning of a sentence: I occasionally dance. Occasionally I dance. But not all adverbs are this flexible in all sentences, you should try them out in different positions until you

asked by Bayarbold on June 24, 2011
11. ## Math

The equation P=240I-8I^2 represents the power, P, (in watts) of a 240 volt circuit with a resistance of 8 ohms when a current of I amperes is passing through the circuit. Find the maximum power (in watts)that can be delivered in this circuit. I have

asked by Shirley on February 23, 2008
12. ## chemistry

Use the appropriate values of Ksp and Kf to find the equilibrium constant for the following reaction: PbCl2(s)+ 3OH(aq) >> Pb(OH)3 (aq) + 2Cl(aq). ksp for PbCl2 is 1.17*10^-5 kf for complex ion is 8*10^13. anyways...I know that the dissociation of the

asked by anonymous on April 24, 2010
13. ## physics

A flight attendant pulls her 70 N flight bag a distance of 253 m along a level airport floor at a constant speed. The force she exerts is 40 N at an angle of 53° above the horizontal A) Find the work that she does on the flight bag B) Find the work done

asked by zheane on March 7, 2013
14. ## Math

How to setup this equation? Find the ratio of the surface area of a cylinder to the volume of the cylinder if the height remains at 10 cm. Simplify this ratio and let f(x) = the simplified ratio. Let r be the radius of the cylinder. a) Find the average

asked by melinda on January 15, 2012
15. ## Physics

In class, we completed a lab dealing with the range of a projectile. First, we dropped a metal ball down an inclined channel followed by a horizontal channel. We timed the ball on the horizontal channel and used this time and the channel length to find

asked by Jim on March 9, 2008
16. ## math

In any triangle the sum of the measures of the angles is 180. In triangle ABC, A is three times as large as B and also 16 larger than C. Find the measures of each angle. I also would like to know how to solve these problems: In isosceles trapezoid ABCD,

asked by Faye on October 4, 2008
17. ## physics

An object with a charge of -4.5 micro C and a mass of 1.1×10−2 kg experiences an upward electric force, due to a uniform electric field, equal in magnitude to its weight. A) Find the magnitude of the electric field. B)Find the direction of the electric

asked by jazz on January 27, 2012
18. ## Math

Find B when A = 76 degs, a = 34, and b = 21. My ans: 0.5993 degs Determine the area of the triangle in which A = 126 degs, b = 9, and c = 10. My ans: 36.41^2 units? Find a when C = 130 degs, B = 29 degs, and c = 15. My ans: 7.02

asked by Anonymous on November 1, 2015
19. ## MATH HELP

The amount of fill (weight of contents) put into a glass jar of spaghetti sauce is normally distributed with mean ì = 843 grams and standard deviation of ó = 9 grams (d) Find the mean of the x distribution. (Give your answer correct to the nearest whole

asked by TOM7 on June 19, 2013
20. ## College Physics

A batted baseball is hit with a velocity of 47.3 m/s, starting from an initial height of 8 m. Find how high the ball travels in two cases: (a) a ball hit directly upward and (b) a ball hit at an angle of 70° with respect to the horizontal. Also find how

asked by HELP on September 12, 2011
21. ## chemistry

The question asks, "Butanoic acid has a partition coeff of 3.0 when distributed b/t water and benzene. Find the formal concentration of butanoic acid in each phase when 100 mL of 0.10 M aqueous butanoic acid is extracted with 25 mL of benzene at pH 10.00."

asked by Anonymous on November 15, 2009
22. ## Precalculus

I am trying to submit this homework in but i guess i'm not doing it in exact values because it is not accepting it. I know i'm supposed to be using half angle formulas but maybe the quadrants are messing me up. Please help! Find sin x/2 , cos x/2 , and tan

asked by J.P. on November 9, 2015
23. ## Humanities

i have to find the number of hajj pilgrims from a country (besides america)annually. right now, im finding the number of hajj pilgrims from Indonesia in the year 1999-2004 and i cant find any good websites on it....any info or links that is related to the

asked by James on February 18, 2009
24. ## Math: Statistics Least squares line

Find an equation of the least squares line, then use it to complete the table. X- 111 169 230 287 335 ? Y- 2 3 4 5 6 7 Extrapolation I missed the lesson on this and as far as I can tell I think the least squares line is y= .01764x+ .oo693 If anyone could

asked by Lola on March 19, 2014
25. ## Physics HELP!

A mountaineer estimates the depth of a crevasse by dropping a stone and listening for sound when the stone hits the bottom. The speed of sound in air is 340m/s. If the sound is heard 10s after the stone is dropped, what is the depth of the crevasse? Do you

asked by Ella on October 2, 2008
26. ## College Physics

A batted baseball is hit with a velocity of 47.3 m/s, starting from an initial height of 8 m. Find how high the ball travels in two cases: (a) a ball hit directly upward and (b) a ball hit at an angle of 70° with respect to the horizontal Also find how

asked by HELP on September 12, 2011
27. ## Physics

A soccer ball is kicked with a velocity of 12m/s, HORIZONTALLY off a building which is 8.5m high. What is the velocity of the ball after 1.25s? This is what I found so far: Vi = 12m/s Dx = 15.8049336m Dy = 8.5m Time it took for ball to hit floor

asked by Pablo on January 27, 2015
28. ## probability

A coin is biased such that a head is thrice as likely to occur as a tail. Find the probability distribution of heads and also find the mean and variance of the distribution when it is tossed 4 times. See

asked by mohsin on January 21, 2007
29. ## Art

Which of the following best describes artists’ inspiration? Generally, artists only gain inspiration from their personal experiences. Artists most often find inspiration from nature. Artists find inspiration from many aspects of their lives. Artists tend

asked by MsHemmoPenguin on January 21, 2016
30. ## probability

Let X and Y be independent continuous random variables that are uniformly distributed on (0,1). Let H=(X+2)Y. Find the probability P(lnH≥z) where z is a given number that satisfies ez

asked by Diane Lin on August 5, 2019
31. ## statistics

Question Details The following data was collected to determine whether or not Monroe County College students work 18 hours per week: 20,22,25,12,30,49,10,30,17,15,0,24,20,22,23,20,25,24,30,12,15,29,0,25,2,40,30,0,33,0,45,30,38,48,0,40,20,0,0,24. a)

asked by Lajuanda on March 8, 2012
32. ## Physics Classical Mechanics

A metal meter stick made of steel rotates about its midpoint. The angular speed is slowly increased. At what value of the angular speed will the stick break apart at the center? Give your answer in rad/s. Hint: find a relationshop between the maximum

asked by Anonymous on November 27, 2013
33. ## English

Would this be a good start to a short story? And what do you think i should say next?? This is for two things, my English class, and my blog. Annabelle is a bright, smart and outgoing young twelve year old. Clifford is a easy going, adventurous eight year

asked by Paisley Jane on April 11, 2012
34. ## English

1. Which of the following is not a type of sentence? A. Simple B. Compound-Complex C. Complex D. Simple-Compound *****MY ANSWER D 2. Which sentence should be edited to eliminate its cliché? A. Conrad trembled with anxiety and anticipation as he pressed

asked by Basti on November 24, 2015
35. ## Chemistry

Methyl alcohol can be prepared commercially by the reaction of hydrogen with carbon monoxide. Under equilibrium conditions at 7.00 × 102 K, [H2] = 0.0720 M, [CO] = 0.200 M, and [methanol] = 0.0300 M. Find the value of Kc, and then find the value of Kp.

asked by Anonymous on November 21, 2015
36. ## physics

The electric field at the point x = 5.00cm and y = 0 points in the positive x direction with a magnitude of 10.0 N/C. At the point x = 10.0cm and y = 0 the electric field points in the positive x direction with a magnitude of 16.0 N/C. Assume this electric

asked by jazz on January 27, 2012
37. ## LiViNgEnViRoNmEnT

A while back, I posted a question about mitosis and meiosis, but I didn't bookmark it and now I can't find it. That's why I'm asking again: How many chromosomes do you start out with and end with in meiosis? In mitosis, you start with one parent with 4

asked by brie on May 30, 2007
38. ## Physics

"A workman sitting on top of a roof of a house drops his hammer. The roof is smooth and slopes at an angle of 30.0 degrees to the horizon. It is 32m long and its lowest point is 32m from the ground. How far from the house's wall is the hammer when it hits

asked by Stuck on July 29, 2010
39. ## Chicago Manual (CM) and Council of Science Editors

Question 1 5 points Save Which of the following fields uses Chicago Manual of Style (CM) documentation? psychology history education biology Question 2 What information goes in the parentheses when using CM style numbered notes? the publishing information

asked by christopher on May 2, 2010
40. ## TRIG

please help two questions h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 5 2 9 6 7 1 5 7 also A surveillance satellite circles Earht at a height of h miles above the surface. Suppose that d is the distance, in miles, on the

asked by TRIG on September 14, 2009
41. ## Physics

A rifle with a weight of 20N fores a 5.0g bullet with a speed of 300m/s. (a) Find the recoil speed of the riffle (b) If a 700-N man holds the rifle firmly against his shoulder, find the recoil speed of the man and the rifle. Please show work. Thank you!

asked by Xian on July 14, 2013
42. ## PHYSICS need help now!!!

A 66kg skater, at rest on frictionless ice, tosses a 6.0kg snowball with velocity by v=53.0i+14.0j m/s, where the x- and y- axes are in the horizontal plane.Find x-component (v_x) of the subsequent velocity of the skater.Find y-component (v_y) of the

asked by Jcota2 on October 26, 2012

A square is constructed using the hypotenuse line AC of right triangle ABC as a side, as shown below. Find the area of the square if AB = 5 and BC = 9. I tried to approach this by finding the hypotenuse, which i found was 10, then i used that to find the

asked by Gem on April 1, 2015
44. ## Calculus

A ball is thrown up on the surface of a moon. Its height above the lunar surface (in feet) after t seconds is given by the formula h=308t−(14/6t^2) Find the time that the ball reaches its maximum height. Answer = Find the maximal height attained by the

asked by Hailey on October 28, 2014
45. ## math

Find the mean, median, and modes of the data. Which average best represents the ages of students in the comic book club. 10 11 12 13 14 15 the median is 12.5 you add the two middle numbers and divide by 2. there is no mode. the mean is 12.5. to find it add

asked by Anna on August 17, 2006
46. ## Physics

A 700-kg car stopped at an intersection is rear-ended by a 1710-kg truck moving with a speed of 16.0m/s . 1) If the car was in neutral and its brakes were off, so that the collision is approximately elastic, find the final speed of the truck. 2)Find the

asked by Lhaedy on October 25, 2013

1(a)Let Y have a binomial distribution with parameters n and p. We reject Ho: p=1/2 and accept H1: p>1/2 if Y>=c. Find n and c such that the probability of a Type I error is .10, and P(reject Ho/p=2/3)=.95. (b)What is the probability of a Type II error?

asked by John on May 10, 2010
48. ## Plese Help

IM sorry what i meant was their compounds hydrogen peroxide or carbon dioxide or fool's gold. 2HCL 2H2O 3NiBr2 2AlBr3 3Ni 3O2 2Al2O3 CaCl2 CaF2 AgNO3 KCl AgCl KNO3 2NH3 2H2O2 (NH4)2SO4 Ba(NO3)2 BaSO4 2NH4NO3 MgI2 Br2 MgBr SO3 H2SO4 6KCl Zn3(PO4)2 3ZnCl2

asked by Alejandro on October 9, 2008
49. ## Statistics

A group of 30 people consists of 15 children, 10 men, and 5 women. Tom and Jerry are two of the men in the group. Five people are picked at random without replacement. 2A - Find the chance the first person picked is a man, given that the fourth and fifth

asked by Din123 on May 18, 2013
50. ## Calculus

For the parametric curve defined x=2t^3-12t^2-30t+9 and y=t^2-4t+6 ..find dy/dx and then where is the tangent to the curve vertical (give the cartesian coordiantes of the points. and find the tang. to the curve horizontal dx/dt= 6t^2-24t-30 dy/dt= 2t-4

asked by Sammy on April 14, 2007
51. ## Astronomy

1. What color are stars that are very hot and very bright? A. Red B. Blue C. White D. Yellow 2. During the contraction of a protostar, density increases and ______ rises. A. Nuclear energy B. Dust C. Temperature D. Outflow 3. What is the apparent

asked by M on April 22, 2017
52. ## physics

A pair of parallel plates are charged with uniform charge densities of –32pC/m2 and +32pC/m2 . The distance between the plates is 2.5mm . If a free electron is released at rest from the negative plate, find its speed when it reaches the positive plate.

asked by jrfannin on February 10, 2014
53. ## Math

I am in Calculus and am currently learning how to find the Area of a Surface of Revolution. I cannot understand what the surface of revolution (whether it's the x-axis, y-axis, or y=6) is. For example, I had a problem saying to use the washer method to

asked by Suzie on December 13, 2007
54. ## physics

I need to find the centripetal acceleration of my clothes dryer. How would I go about doing it... Would the tangential speed just be 2pi*R*number of rotations/time, or how would I find that? Put a shoe in the dryer. Count the number of times the shoe

asked by Mischa on May 1, 2007
55. ## Algebra II

1. Find the value of 5 + 8 x 2 divided by 4 - 11 2. Evaluate (a-y)^2 + 2y^3, if a =2 and y= -3 3. Evaluate -|a-3b|, if a=-2 and b = 6 4. The formula A= 180 (n-20 OVER N relates the measure A of an interior angle of a regular polygon to the number of sides.

asked by PJ. on May 4, 2008

A) If x^2+y^3−xy^2=5, find dy/dx in terms of x and y. dy/dx=________ B) Using your answer for dy/dx, fill in the following table of approximate y-values of points on the curve near x=1 y=2. 0.96 ______ 0.98 ______ 1.02 ______ 1.04 ______ C) Finally, find

asked by Catherine on March 15, 2011
57. ## math

A) If x^2+y^3−xy^2=19, find dy/dx in terms of x and y. dy/dx=________ B) Using your answer for dy/dx, fill in the following table of approximate y-values of points on the curve near x=1 y=3. 0.96 ______ 0.98 ______ 1.02 ______ 1.04 ______ C) Finally,

asked by lauren on October 23, 2014
58. ## Calculus (pleas help!!!)

Please answer the following questions about the function f(x)=e^(-0.5x^2) Instructions: If you are asked to find x- or y-values, enter either a number, a list of numbers separated by commas, or None if there aren't any solutions. Use interval notation if

asked by Catherine on April 5, 2011
59. ## Calculus (urgent!!)

Please answer the following questions about the function f(x)=e^(-0.5x^2) Instructions: If you are asked to find x- or y-values, enter either a number, a list of numbers separated by commas, or None if there aren't any solutions. Use interval notation if

asked by Catherine on April 6, 2011
60. ## Calculus (pleas help!!!)

Please answer the following questions about the function f(x)=e^(-0.5x^2) Instructions: If you are asked to find x- or y-values, enter either a number, a list of numbers separated by commas, or None if there aren't any solutions. Use interval notation if

asked by Catherine on April 5, 2011
61. ## Calculus

Find the critical numbers of the function g(t)=|5t-7| If you find g'(t) you just get 5 so would there be no critical numbers? Or am I missing something?

asked by Calculus on October 7, 2010
62. ## Consider the functions

Consider the functions f(x)= 5x+4/x+3(This is a fraction) and g(x)= 3x-4/5-x(This is a fraction) a)Find f(g(x)) b)Find g(f(x)) c)Determine whether the functions f and g are inverses of each other.

asked by Kayleigh on April 10, 2013
63. ## History

I'm trying to find the consequences of the second great awakening and all I can find is the great awakening. How else can I look other than google? Thanks

asked by Michael on April 29, 2011
64. ## Pre-Cal

how do you find the vertex using two points, when no equation is given and neither points are the vertex? what formula can i use to find it?

asked by Steph on October 5, 2011
65. ## math

A. Find the mode of the following set of numbers. b. Find the range of the following set of numbers. 11, 13, 13, 12, 11, 12, 13, 10, 14

asked by born slow on April 26, 2011
66. ## Math

explain three ways to find the area of the rectangle at the right. Use the ways to find the area using 7,3,2,5

asked by Bryce on October 6, 2014
67. ## algebra

Find the x-intercepts and y-intercepts for f(x) f(x)=x^2-4x + 1 I have been trying to figure this one out for hours and I find no solution but there has to be a way to figure this out and I can't. Please help!! Thank you

asked by slomomo on February 4, 2015
68. ## Math

How do you find the missing number when you have four numbers but missing the fifth. Find the average of 12.3 with the numbers of 12.8,12.6,11.8,9.7

asked by May Flower on August 9, 2016
69. ## Calc

How do you find the points of the derivative of a function just from the graph of the function? It wants me to find f'(0), f'(1), etc just from the graph-thanks

asked by Michael on September 22, 2008
70. ## algebra

Find 1. the binomial expansion of (3+2x)^5 simplifying terms. Hence find the binomial expansion of (3+2x)^5 +(3-2x)^5.

asked by lindsay on July 22, 2014
71. ## math

how would i find the derivative of this problem: t-.3t^2+cos 4t? I don't know how to find the derivative of cos 4t

asked by jessica on October 7, 2007
72. ## math

Data were recorded for the demand and revenue of a given product. Find the linear regression line which represents the revenue function. Find the quadratic regression curve which represents the revenue function. Data Demand x Revenue y 1 0 100 2 4 139.2 3

asked by Jake on October 15, 2014
73. ## calculus

A cable runs along the wall from C to P at a cost of \$3 per meter, and straight from P to M at a cost of \$5 per meter. If M is 16 meters from the nearest point A on the wall where P lies, and A is 50 mters from C, find the distance from C to P such that

asked by RAJ on October 18, 2014
74. ## Maths Probability

Consider a Markov chain X0,X1,X2,É described by the transition probability graph shown below. The chain starts at state 1; that is, X0=1. 1recurs p=.75 1to 2 p= .25 2to 1 p = .375 2 recurs p=.25 2 to 3 p = .375 3 to 2 p = .25 3 recurs p = .75 Find the

asked by xyz on May 20, 2014
75. ## physics

The drawing shows a copper wire (negligible resistance) bentinto a circular shape with a radius of 0.48 m. The radial sectionBC is fixed in place, while the copper bar ACsweeps around at an angular speed of 16 rad/s. The bar makeselectrical contact with

asked by Daniel on March 12, 2012
76. ## physics

A man pushing a crate of mass m = 92.0 kg at a speed of v = 0.845 m/s encounters a rough horizontal surface of length scripted l = 0.65 m as in the figure below. If the coefficient of kinetic friction between the crate and rough surface is 0.357 and he

asked by Melissa on June 3, 2013
77. ## maths-complex numbers

by using the substitution w = z^3, find all the solutions to z^6 - 8z^3 +25 = 0 in complex numbers, and describe them in polar form, using @(theta) to denote the angle satisfying tan@ = 3/4 ( note simply leave @ as it is, don't calculate it). i got up to

asked by Anonymous on March 12, 2007
78. ## Alg II

I'm working with finding roots of polynomial equations with degrees of 3 or higher. I have the equation r(x)=x^4-6x^3+12x^2=6x-13 I used a graphing calculator to find the real roots of 1,-1 Then I did synthetic using -1, and I ended up with the equation

asked by Josh on January 20, 2010
79. ## Math

_The_Natural_Base_e_ An accident in 1986 at the Chernobyl nuculear plant in the Ukraine released a large amount of plutonium (Pu-239)into the atmosphere. The half-life of Pu-239 is about 24,110 years. Find the decay constant. Use the function N (t) = N 0 e

asked by Student09 on December 3, 2012
80. ## chemitstry

I would like if you guys could answer me this question or give me a website where I cold find the answer. Lead, mercury and plutonium are very harmful elements, but when you cobined them with what do they become harmless? The element with which they must

asked by claudia on September 24, 2007
81. ## Alg II

I'm working with finding roots of polynomial equations with degrees of 3 or higher. I have the equation r(x)=x^4-6x^3+12x^2=6x-13 I used a graphing calculator to find the real roots of 1,-1 Then I did synthetic using -1, and I ended up with the equation

asked by Josh on January 20, 2010
82. ## Statistic

For 3 and 4 find the range, variance, and standard deviation. Round to the nearest tenth. 3. Twelve students were given an arithmetic test and the times (in minutes) to complete it were 10, 9, 12, 11, 8, 15, 9, 7, 8, 6, 12, 10 4. The normal daily

asked by Artmisha on May 30, 2014
83. ## AP Physics

A flagpole is to be installed on the front of an office building as shown below. The pole itself weighs 150 N and is 2 meters long. The support wire is attached at a 60º angle at a point 0.5 meters from the building. A. Find the value of the tension in

84. ## precalculus

one section of a suspension bridge has its weight uniformly distributed between twin towers that are 400 feet apart and rise 90 feet above the horizontal roadway. a cable strung between the tops of the towers has the shape of a parabola, and its center

asked by tim on October 25, 2014
85. ## life science

Hi I am doing a report on manas natianal park. and how it got on the world heritage site. but i cant find anything on iti have to answer these question Describe the diversity of life forms found in the area. Describe the biological interrelationships among

asked by amy on October 8, 2008
86. ## Algebra

I really need help on some sample work. Just need to check my answers: 1. Describe how the graph of y=-x^2+1 differs from y=x^2. Then find the axis of symmetry and the vertex 2. Graph the quadratic equation y=x^2+x-2. Identify the axis of symmetry and the

asked by Connor Steelwood on March 21, 2019
87. ## Algebra

I really need help on some sample work. Just need to check my answers: 1. Describe how the graph of y=-x^2+1 differs from y=x^2. Then find the axis of symmetry and the vertex 2. Graph the quadratic equation y=x^2+x-2. Identify the axis of symmetry and the

asked by Connor Steelwood on March 22, 2019
88. ## College Physics

A charged particle travels undeflected through perpendicular electric and magnetic fields whose magnitudes are 4000 N/C and 20 mT,respectively. Find the speed of the particle if it is a proton. v= m/s Find the speed of the particle if it is an alpha

asked by Lanise on February 19, 2010
89. ## physics

Rocket-powered sleds are been used to test the responses of humans to acceleration. Starting from rest, one sled can reach a speed of 495 m/s in 1.78 s and can be brought to a stop again in 2.16 s. Find the acceleration of the sled while ac- celerating.

asked by kailee on August 27, 2016
90. ## Chemistry

"Hi there! So I have a chemistry project due in a few hours. I need to find the molar mass of a specific antacid tablet, but all I know is that the tablet is made up of 550mg CaCO3 and 110mg Mg(OH)2 I also know that the tablet has a mass 1.35g. How do I

asked by Kate on June 19, 2017
91. ## math

List the ages of two people in your life, one older than you and one younger than you. It would be best if the younger person was 15 years of age or younger. Find the prime factorizations of your age and the other two persons’ ages. Show your work listed

asked by Anonymous on June 27, 2011
92. ## math

Mike makees the following table of the distances he travels during the first day of the trip. A suppose Mike continues riding at this rate. Write an equation for the distance mike travles after t hours. B sketch a graph of the equation. How did you choose

asked by david on August 29, 2011
93. ## Physics

A man stands on the roof of a 15m tall building and throws a rock with a velocity of magnitude 30m/s at an angle of 33deg above the horizontal. Ignore air resistance. Calculate: a) the maximum heigh above the roof reached by the rock b) the magnitude of

asked by Kyle on September 26, 2011
94. ## English

1. I have helped an old man to cross the street on a crosswalk. 2. I have helped a foreigner to find a post office. 3. I have helped a missing child to go back to his home. 4. I have helped an old lady to carry things. 5. I have helped a man to take a

asked by rfvv on September 15, 2012
95. ## Math

Consider the approximately normal population of heights of male college students with mean ì = 69 inches and standard deviation of ó = 4.6 inches. A random sample of 25 heights is obtained. (b) Find the proportion of male college students whose height is

asked by Sue7 on June 21, 2013
96. ## Algebra (worksheet due tomorrow)

I cannot figure out what the answer to this problem is. Can somebody help plz? any help is greatly appreciated! Tony swims 100 m downstream in 175 seconds. It takes him 400 seconds to swim back upstream. 5. Find Tony's rate with the current. I got r+c=175,

asked by Emily on March 29, 2007
97. ## ph+chem#2

Hey, can you help me on this last question. I don't understand how I can figure it ouyt without any indicators or solutions. Please help! 13. Three solutions labelled A, B, and C are known to have pH values of 4.0, 6.5, and 8.0. Write an experimental

asked by Bobby on August 4, 2006
98. ## Economics - stock purchase

Can someone please help me? I am so confused! My homework is called stock purchase and I need to find some information abut three stocks. I'm starting with microsoft. The first three questions are the stock name, symbol, and address of the headquarters.

asked by Samantha on April 15, 2010
99. ## Pre-Calculus

When buying gasoline, you notice that 14 gallons of gasoline is approximately the same as 53 liters. Use this information to find a linear model that relates gallons to liters. Then use the model to find the number of liters in 25 gallons. Round your

asked by Mariam on October 3, 2017
100. ## statistics

A basketball player makes 60% of the free throws that he attempts, except that if he has just tried and missed a free throw then his chances of making a second one go down to only 30%. Suppose he has just been awarded two free throws. Find the probability

asked by john on July 16, 2016