# 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

92,916 questions, page 702
1. ## Math

Lareina understands factors, but sometimes she has trouble finding all the factors of a number. What advice would you give to help her find all the factors of a number? Demonstrate by finding all the factors of 110.

asked by Skylar on September 21, 2015
2. ## stat

the time between unplanned shutdowns of a power plant has an exponential distribution with a mean of 20 days. Find the probability that the time between two unplanned shutdow is a) less than 14 days B) more than 21 days c) less than 7 days

asked by charles on January 11, 2011
3. ## Math

a boat starts at point A, moves 3km due north, then 2 km due east, then 1 km due south, and then 4 km due east to point b. Find the distance AB

asked by Anonymous on December 11, 2010
4. ## Algebra - check to see if correct

Telephoto lens. Use the formula from Exercise 67 to find the image distance i for an object that is 2,000,000 mm from a 250-mm telephoto lens. (Section 6.7 (1/f = 1/0 +1/i) 1/i = 1/250 - 1/ (2*10^9) i=25.

asked by help please on March 2, 2009
5. ## Pre-Calculus

A town has a population which is growing linearly. In 1970 its population was 36,000 while in 1985 its population was 63,000. Find a formula for its population P(t), where t=0 corresponds to the year 1970.

asked by L.Bianchessi on March 11, 2012
6. ## calculus

Find the coordinates of points where the graph of f(x) has horizontal tangents. As a check, graph f(x) and see whether the points you found look as though they have horizontal tangents. f(x) = −x3 + 6x2 − 9x + 13 (x, y) = ( ? ) (smaller x-value) (x, y)

asked by Adam Janky on March 10, 2011
7. ## Geometry

Jenny is 5ft 2in tall to find the height of The light pole she measured her shadow And the poles shadow what is The height of the light pole

asked by Anonymous on February 4, 2014
8. ## Math

Suppose you have 36 yards of fencing to build a fence around a rectangular backyard garden. The width is 18 yards less than twice the length. Find the length and width of this garden.

asked by Scarlett on April 23, 2013
9. ## statistics

According to an Internet posting, 80% of adults enjoy drinking beer. If a group of 3 adults is selected at random, find the probability that all of them enjoy drinking beer is:

asked by Bertha on April 17, 2014
10. ## Math

The sum of the lengths of the sides of triangle ABC is 38in. The length of sides AB and BC are 14 inches and 11 inches. Find the length of side AC and classify the triangle.

asked by Elaina on March 5, 2012
11. ## calculus

A box with a square base and an open top is to have a volume of 68in^3 . Neglect the thickness of the material used to make the box, and find the dimensions of the box that would minimize the amount of material used. The width and length of the box are

asked by Haley on March 30, 2010
12. ## Math

A fish bowl is constructed out of a spherical bowl with diameter 20cm. The bowl was initially empty and water flows into the bowl at a rate of 10cm^3/s. Let V and h be the volume and depth of water in the bowl at time t seconds respectively. Find dh/dt

asked by Isabel on November 30, 2016
13. ## Calculus

If a ball is thrown straight up into the air with an initial velocity of 95 ft/s, its height in feet after t seconds is given by f(t)=95t−16t^2 Find the average velocity for the time period beginning when t=1 and lasting (i) 0.5 seconds (ii) 0.1 seconds

asked by Robin on May 31, 2013
14. ## Precalculus

Find the roots of the following quadratic equations by factoring. y=x^2+9x-36 I got (x+12)(x-3) but on the answer key it says that the answer is this, however it renames the x values with opposite values. For example, the answer on the review for it has my

asked by Zane on September 29, 2014
15. ## Calculus-Math

Delta Cephei is one of the most visible stars in the night sky. Its brightness has periods of 5.4 days, the average brightness is 4.0 and its brightness varies by plus-or-minus 0.35. Find a formula that models the brightness, b, of Delta Cephei as a

asked by E on September 22, 2017
16. ## Physics

A platform of mass 0.83 kg is supported on four springs (only two springs are shown in the picture, but there are four altogether). A chunk of modeling clay of mass 0.65 kg is held above the table and dropped so that it hits the table with a speed of v =

asked by Susan on December 3, 2010
17. ## Chemistry

A 300 g glass thermometer initially at 32 ◦C is put into 165 cm3 of hot water at 88 ◦C. Find the final temperature of the ther- mometer, assuming no heat flows to the surroundings. The specific heat of glass is 0.2 cal/g ·◦ C and of water 1 cal/g

asked by Eliza on August 25, 2017

A quasi-scientific study was done to find some link to autism. In the study, it was found that children who had an autistic tendency were delivered after an average of about 30 hour labor. They all weighed an average of 10 pounds. The study was done in a

asked by Steve on May 7, 2013
19. ## Physics

A lead ball, with an initial temperature of 25.0oC, is released from a height of 119.0 m. It does not bounce when it hits a hard surface. Assume all the energy of the fall goes into heating the lead. Find the temperature (in degrees C) of the ball after it

asked by Olivia on December 15, 2011
20. ## Maths

A ship leaves Team harbor at 10:00am one morning. The captain steers a course bearing 136 degrees at a speed of 20km/h through the water. There is a current of 5km/h in a direction of 046 degrees. Find 1. The direction in which the boat travels. 2. The

asked by Derek ofori on June 23, 2017
21. ## math

Suppose the total cost function for manufacturing a certain product C(x) is given by the function below, where C (x) is measured in dollars and x represents the number of units produced. Find the level of production that will minimize the average cost.

asked by Renee on November 5, 2012
22. ## statistics

Do you think there is a correlation between CEO salaries and the degree of success of a company? If you were to take a sample of companies with comparable size, market capitalization, and product category, and plot CEO salaries against the net profit of

asked by Mark on December 17, 2011
23. ## physics

describe the force board experiment to show how to obtain the resultant of two non-parallel coplanar force acting at a point.four forces of magnitude 10N, 5N, 4N, AND 6N acts on an oblect in the direction north. West, east and south respectively.find the

asked by jude on July 27, 2011
24. ## physics

A force is given by Fx=Ax^-3, where A=8.0 N*m^3.(a) For positive values of x,does the potential energy associated with this force increase or decrease with increasing x?(You can determine the answer to this question by imagining what happens to a particle

asked by Randy on October 28, 2009
25. ## Physics

A plane is headed due west with an air speed of 221 m/s. The wind blows south at 37.5 m/s. Find the velocity of the plane relative to the earth. The question asks for the magnitude which I found is 224 m/s. The question also asks for the

asked by Lindsey on February 2, 2011
26. ## math

A quasi-scientific study was done to find some link to autism. In the study, it was found that children who had an autistic tendency were delivered after an average of about 30 hour labor. They all weighed an average of 10 pounds. The study was done in a

asked by Michael on April 30, 2013
27. ## Physics

A lead ball, with an initial temperature of 25.0oC, is released from a height of 119.0 m. It does not bounce when it hits a hard surface. Assume all the energy of the fall goes into heating the lead. Find the temperature (in degrees C) of the ball after it

asked by Olivia on December 15, 2011
28. ## math

Suppose the total cost function for manufacturing a certain product C(x) is given by the function below, where C (x) is measured in dollars and x represents the number of units produced. Find the level of production that will minimize the average cost.

asked by Britney on November 14, 2012
29. ## Physics 12

Help will be appreciated. In a large department store, a shopper is standing on the "up" escalator, which is travelling at an angle of 40 degree above the horizontal and at a speed of 0.75 m/s. He passes his daughter, who is standing on the identical,

asked by G on March 29, 2013
30. ## physics 111

A bicycle travels 3.2 km due east in 0.10 h, then 5.6 km at 15.0° east of north in 0.11 h, and finally another 3.2 km due east in 0.10 h to reach its destination. The time lost in turning is negligible. What is the average velocity for the entire trip? i

asked by bob on September 14, 2007
31. ## Science

I have to do a project with a science related career (that doesn't necessarily mean a scientist, but someone who uses science frequently). What do you call a scientist who studies the science of music? I've google this but I couldn't find any results, but

asked by Jeff on April 24, 2009
32. ## chemistry

Standard Addition Question: Serum containing Na+ gave a signal of 4.27 mV in an atomic emission analysis. Then 5.00 mL of 2.08 M NaCl were added to 95.0 mL of serum. This spiked serum gave a signal of 7.98 mV. Find the original concentration of Na+ in the

asked by Phil on August 9, 2015
33. ## PHYSICS

In the Bohr theory of the hydrogen atom, an electron moves in a circular orbit about a proton, where the radius of the orbit is approximately 0.542 multiplied by 10-10 m. (The actual value is 0.529 multiplied by 10-10 m.) (a) Find the electric force

asked by suhani on September 22, 2013
34. ## Math-- Ms. Sue??

You are designing a rectangular playground. ON YOUR SCALE DRAWING, THE VERTICES OF THE RECTANGLE ARE (6,3), (6,5), AND (8,3). wHAT ARE THE COORDINATES OF THE FOURTH VERTEX? 1: (4,5) 2: (8,5) 3: (8,1) 4: (5,8)

asked by yolo on May 15, 2014
35. ## Math

1. Jill has a bond with a face value of \$1,000. The bond has a coupon rate of 6%. Find her current yield if the market price of the bond is \$1,027. 2. Calculate the annual interest you receive on a \$1000 Treasury bond with a current yield of 1.5% that is

asked by Kim on November 18, 2013
36. ## Calculus

Suppose x; y, and z are positive numbers that sum to 10. What is the largest possible value of xy + xz + yz? (a) First, suppose that z is a fixed parameter. Then we have to find nonnegative numbers x and y (depending on the fixed value z such that x+y =

asked by Sarah on March 25, 2016
37. ## Physics

Starting from rest at 10m to the left of the origin (the starting line of a race), a go-kart undergoes constant acceleration of 2.46 m/s2. Make a table calculating the karts position and velocity at 10 second intervals from t=0 to 60 seconds. I have

asked by Jorge on September 18, 2016
38. ## Trigonometry

a rope dancer was walking on a loose roop tied to the top of two equal post of height 9m. when he was 3m above the ground, it was found that stretched pieces of roop made angle of 30 degree and 60 degree with the horizontal line parallel to the ground.

asked by Akash on January 23, 2018
39. ## statistics/probability

An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 130 lb and 181 lb. The new population of pilots has normally distributed weights with a mean of 135 and a standard deviation of 25.1 lb. If

asked by slomomo on March 12, 2015
40. ## Pre-Calc

An open gift box is to be made from a square piece of material by cutting four-centimeter squares from each corner and turning up the sides (see figure). The volume of the finished gift box is to be 324 cubic centimeters. Find the size of the original

asked by Katie on February 11, 2016
41. ## Math

An open gift box is to be made from a square piece of material by cutting four-centimeter squares from each corner and turning up the sides (see figure). The volume of the finished gift box is to be 324 cubic centimeters. Find the size of the original

asked by Katie on February 11, 2016
42. ## statistics

Downs and Abwender (2002) found neurological deficits in soccer players who are routinely hit on the head with soccer balls compared to swimmers, who are also athletes but who are not regularly hit in the head. Is this an example of an experimental or a

asked by Liz on June 22, 2011
43. ## Trig

Given y=2-4cos(3x-pi/4), find each of the following, giving the general representation of the location of all minimums. Also provide the graph of two full cycles, labeling everything. Domain = Range = Amplitude = Period = Ph. Shft. = Interval for one

asked by Joe on July 9, 2012
44. ## science

Hi .. Please school is coming and I need help im ny research What are the patterns of the Reactivity in the Periodic table and the Atomic Structure I have been in lots of websites and I can't find it Please help tahnx Metals in the lower left corner are

asked by ِِamy on December 28, 2006
45. ## Pre-Algebra

Find each product or quotient. express using exponents 4. Neutral water has a pH of 7. Each one-unit decrease i the pH means that the solution is 10 times more acidic. How much more acidic vinegar is than baking soda if vinegar has a ph of 3 and baking

asked by TiffanyJ on January 18, 2011
46. ## physics

(1) A uniform meter rod 4ON has a piece of weight of 2ON attached to one of its end. What is the center of gravity of the system from the weight end? (2) two bodies X and Y start from rest and move with uniform acceleration of a and 4a respectively. If the

asked by Lorenz on October 31, 2016
47. ## COLLEGE PHYSICS

A 1100kg car starts from rest, accelerates for 5 seconds. The magnitude of acceleration is (a)= 4.6m/s2. find the average power generated by the net force that accelerates the vehicle? what do i do here i know that F=ma= 1100x4.6=5060=F and Wnet =

asked by natali on October 18, 2007
48. ## Pre-Calc

A company that produces portable cassette players estimates that the profit P (in dollars) for selling a particular model is P=-76x^3+4830x^2-320000, 0 is less than or equal to x is less than or equal to 50, where x is the ad expense (in tens of thousands

asked by Andy G on January 22, 2014
49. ## Chemistry

You discover a new cell type that contains measurable amounts of silver ions (Ag+) in it. You find that the concentration of Ag+ inside the cell is still 10 times lower than the concentration outside. Calculate the amount of membrane potential that results

asked by Tenshi on July 27, 2016
50. ## Math(differential equations)

An 8 lb weight stretches a spring 8 feet. The weight is moving through a surrounding medium that has a damping effect equal to the instantaneous velocity of the weight. Initially the weight is displaced 4 feet below the equilibrium position with a downward

asked by Meredith on May 3, 2012
51. ## Sociology/Social Responsibility

I have to write two paragraphs on Gays in the Military. The Don't Ask Don't Tell" campaign. What mediums, messages and techniques did this campaign use to make it so effective. i CAN FIND A LOT OF INFO ON THE GAYS IN THE MILITARY, BUT NOTHING THAT HELPS

asked by Cathy on November 10, 2014
52. ## nsc

A survey has found that 3/4 of the people in a city own pets. Of those who own pets, 2/3 have cats. What fraction of thsoe surveyed own cats? You need to find 2/3 of 3/4. Since of means multiply, you need to multiply 2/3 times 3/4. What answer do you get?

asked by jeanie on June 29, 2007
53. ## Preclc

To measure the height of the cloud cover at an airport, a worker shines a spotlight upward at an angle 75° from the horizontal. An observer D = 600 m away measures the angle of elevation to the spot of light to be 45°. Find the height h of the cloud

asked by meridath on March 27, 2017
54. ## physics

A solid uniform marble and a block of ice, each with the same mass, start from rest at the same height above the bottom of a hill and move down it. The marble rolls without slipping, but the ice slides without friction. Find the speed of each of these

asked by Erin on April 6, 2008
55. ## Math

Not Urgent But Please Check My Answer: A pencil at a stationery store costs \$1, and a pen costs \$1.50. Stella spent \$21 at the store. She bought a total of 18 items. Which system of equations can be used to find the number of pencils (x) and pens (y) she

asked by Nina on September 30, 2015
56. ## Physics

A uniform rod 8m long weighing 5kg is supported horizontally by two vertical parallel strings at P and Q,and at distances of 2m,and 6m from one end. Weights of 1kg,1.5kg and 2kg are attached at distances of 1m, 5m and 7m respectively from the same end.

asked by Sidik on November 9, 2017
57. ## physics

A car travels due east with a speed of 35.0 km/h. Raindrops are falling at a constant speed vertically with respect to the Earth. The traces of the rain on the side windows of the car make an angle of 70.0° with the vertical. Find the velocity of the rain

asked by kia on February 17, 2011
58. ## Math trigonometry

a rope dancer was walking on a loose roop tied to the top of two equal post of height 9m. when he was 3m above the ground, it was found that stretched pieces of roop made angle of 30 degree and 60 degree with the horizontal line parallel to the ground.

asked by Akaash on January 23, 2018
59. ## Physics

Three blocks are located on a horizontal frictionless table. They are connected by a massless cord, as shown in the figure, and pulled to the right. The masses of the three blocks are m1 = 38 kg, m2 = 37 kg, and m3 = 17 kg. a.) The pulling force is equal

asked by Carly on October 8, 2015
60. ## Math

A car is stopped at a red light, and starts moving at time t = 0 when the light turns green, with an acceleration given by a(t) = √t, with t given in seconds, and distances given in metres. a) Find a formula for the velocity v(t), via integration. b) How

asked by Mr Homie on June 6, 2016
61. ## Chemistry

A solution was made by dissolving 62.07 grams of a compound in 500g of water. The compound was not ionic. The freezing point of the solution was measured and found to be -1.86 degrees celsius. Using the Kf value in your textbook, the molar mass of this

asked by Hannah on February 12, 2012
62. ## Physics

Margaret walks to the store using the following path: 0.435 miles west, 0.280 miles north, 0.300 miles east. What is her total displacement? That is, what is the length and direction of the vector that points from her house directly to the store? Find

asked by Anonymous on January 26, 2012
63. ## physics

please show me a simple formula to solve this find the final equilibirum temperature when 10.0 g of milk at 10.0degC is added to 1.60 * 10^2 g of coffee with a temperature of 90.0degC. assume the specific heats of coffee and milk are the same as for water

asked by Bella on February 22, 2009
64. ## Algebra

A group of retailers will buy 96 televisions from a wholesaler if the price is \$500 and 136 if the price is \$450. The wholesaler is willing to supply 84 if the price is \$420 and 164 if the price is \$510. Assuming the resulting supply and demand functions

asked by Jamie on September 23, 2015
65. ## Ethics 2

Post a summary of a current issue between Native Americans and the federal government. Identify the legislation that you think is linked to the issue and explain why you think there is a connection.

asked by Kelli Evans on May 26, 2007
66. ## Socials

I am having to do an essay on the River Nile. I am having a hard time finding the answers to some of the questions. I need to include in my essay these facts... 1)Where does the River Nile originate from? 2)Why doees the Nile overflow it's banks. 3)When

asked by Dakota on November 9, 2009
67. ## ENGLISH

What does the qoute mean. Can a counter example or counter claim be made? "To enjoy good wealth , to bring true happiness to ones family, to bring peace to all, one must first discipline and control ones own mind. If a person can control his mind he can

asked by Aimee on December 15, 2013
68. ## physics

A car travels due east with a speed of 35.0 km/h. Raindrops are falling at a constant speed vertically with respect to the Earth. The traces of the rain on the side windows of the car make an angle of 70.0° with the vertical. Find the velocity of the rain

asked by Anonymous on February 18, 2011
69. ## Help- Precalc

Suppose that α is an angle such that tan α=(5/7) and sinα0. Find the exact value of sine(α−β) -Direction (Simplify your​ answer, including any radicals. Use integers or fractions for any numbers in the​ expression.) Please show work + answer,

asked by chizoba on August 13, 2016
70. ## AP Calculus

An Initial amount of 100 grams of Thorium-234 decays according to the model: dP/dt=-0.02828P (where t is measured in years). a) Find the equation for the amount of Thorium left after t years. b) Determine the half-life of this radioactive isotope c) How

asked by RC on October 12, 2009

A 5.7 cm thick layer of oil (n=1.46) is sandwiched between a 1.1cm-thick sheet of glass and a 2.5cm -thick sheet of polystyrene plastic (n=1.59). How long (in nm) does it take light incident perpendicular to the glass to pass through this 9.3cm -thick

asked by Michael on February 6, 2013
72. ## calculus

I've tried this problem about 20 times and a bunch of different ways and I can't seem to get it right. The problem is: Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis. Where y=1/(x^3), y=0,

asked by bre on October 20, 2009
73. ## Maths

A)Sam jogs 6 laps around a circular running track which has a radius of 30 meters. How far does she jog in total? B)Tom and Jerry decide to find the perimeter of their garden. Tom measures the length as 5.2meters while Jerry measures the width as 37cm.

asked by Anonymous on February 24, 2011
74. ## Math

Suppose that people's heights (in centimeters) are normally distributed, with a mean of 170 and a standard deviation of 5. We find the heights of 60 people. (You may need to use the standard normal distribution table. Round your answers to the nearest

asked by Melissa on December 1, 2015
75. ## Math

A new law requires that 12% of an individual's income be invested in the stock market. Your accounts show that you need to put \$420 in the stock market this year. How much did you earn this year. My Guess is 3,500% But Its a guess i would like to know how

asked by Bria on March 4, 2019
76. ## math

The depth of water(d metres) in a harbour is given by the formula d = a+bsin(ct) where a, b and c are constants, and t is the time in hours after midnight. It is known that both b and c are non-zero and 20

asked by Jessica on November 20, 2014
77. ## Physisc(help)

At low speeds (especially in liquids rather than gases), the drag force is proportional to the speed rather than it's square, i.e., F⃗ = −C1rv⃗ , where C1 is a constant. At time t = 0, a small ball of mass m is projected into a liquid so that it

asked by Anonymous on October 14, 2013
78. ## physics

At low speeds (especially in liquids rather than gases), the drag force is proportional to the speed rather than it's square, i.e., F⃗ = −C1rv⃗ , where C1 is a constant. At time t = 0, a small ball of mass m is projected into a liquid so that it

asked by Anonymous on October 14, 2013
79. ## university of phoenix

The weight of a small Starbucks coffee is a random variable with a mean of 360 g and a standard deviation of 9 g. Use Excel to find the weight corresponding to each percentile of weight. a. 10th percentile b. 32nd percentile c. 75th percentile d. 90th

asked by michelle on January 4, 2012
80. ## statistics

The weight of a small Starbucks coffee is a random variable with a mean of 360 g and a standard deviation of 9 g. Use Excel to find the weight corresponding to each percentile of weight. a. 10th percentile b. 32nd percentile c. 75th percentile d. 90th

asked by maribel on May 7, 2011
81. ## Physics

A sled weighing 60 N is pulled horizontally across snow so that the coefficient of kinetic friction between the sled and the snow is 0.100. A penguin weighing 70 N rides on the sled. If the coefficient of static friction between the penguin and the sled is

asked by Armando on December 6, 2006
82. ## math (5)

Country Workshop manufactures both finished and unfinished furniture for the home. The estimated quantities demanded each week of its rolltop desks in the finished and unfinished versions are x and y units when the corresponding unit prices, in dollars,

asked by Mia on April 28, 2014
83. ## geometry

PLEASE HELP ME! i have this homework due tomorrow and i only have 1 question left and am sooo desperate for an answer: The diameter of the Dome of the Rock in Jerusalem is 20m. If it is plated with gold that is 5cm thick, find the cost of plating the dome

asked by CJ on January 27, 2011
84. ## Algebra

Week 3 Word Problem You live 15 blocks (3/4 of a mile) from RACC. Your car is in for service so you decide to walk to class. Walking at a speed of 4 miles per hour, what is the latest time you can leave your home to be on time for your 10:00 am class in

asked by Lisa Lisa on February 10, 2013
85. ## Math Check 2 ?s quick

The angle of elevation to the top of a 20-story skyscraper is measured to be 10 from a point on the ground 1,500 feet from the building. Find the height of the skyscraper in feet, correct to three decimal places. (Points : 5) 260.47 73.86 972.54 264.49

asked by Jake on January 14, 2014
86. ## physics

a circular hoop of mass and radius spins like a wheel rotating about its centre with moment of inertia. its period it T (1) find the kinetic energy in terms of the given parameters 2. if such a hoop rolls with its centre moving at velocity v show that it

asked by SING on July 6, 2013
87. ## Physics

Two wheels have the same mass and radius of 4.0 kg and 0.35 m, respectively. One has (a) the shape of a hoop and the other (b) the shape of a solid disk. The wheels start from rest and have a constant angular acceleration with respect to a rotational axis

asked by Jasmin on November 4, 2011
88. ## Physics

a circular hoop of mass and radius spins like a wheel rotating about its centre with moment of inertia. its period it T (1) find the kinetic energy in terms of the given parameters 2. if such a hoop rolls with its centre moving at velocity v show that it

asked by SING on July 6, 2013
89. ## math

As of July 2004, the population of the United States was 293,027,571. If more than half of these people live within 80 kilometers of an ocean, about how many people live within distance? I guess I have to look to find the conversion of kilometers to

asked by Nehemiah on December 17, 2008
90. ## Business Math

Last week, Laurie Golson packaged 289 boxes Holiday Cheese Assortment. Find her gross weekly earnings if she is paid at the following differential piece rate. Boxes packaged Pay per package per week 1-100 \$1.88 101-300 \$2.08 301 and over \$2.18 I don't know

asked by tmouery on February 11, 2013
91. ## Calculus

This is my first calculus class and I am lost on how to answer these. The book isn't giving me a clear explanation for help. Any help someone could provide would be great! 1. Use a reference triangle to find the given angle. cos -1 (1/2) give an exact

asked by Jarred on January 16, 2010
92. ## Chemistry-Repost for DrBob222

The reaction OH- + NH4+ = H20 + NH3 is kinetically first order in both reactants' concentrations. The rate constant is 2e10 1/M s. If 50 ml of .01 M NaOH is mixed with 50 ml of .01 M NH4CL, find the time required for the OH- concentration to reach 1e-4 M.

asked by Anonymous on March 21, 2014
93. ## Alg II

So in our Alg II class we're studing variables and functions, and from the situation given we are to figure out the equation. "In a lighting storm, the time interval betwee the flash ad the bang (f) is directly proportional to the distance between you and

asked by Rylie on September 24, 2009
94. ## physics

a circular hoop of mass and radius spins like a wheel rotating about its centre with moment of inertia. its period it T (1) find the kinetic energy in terms of the given parameters 2. if such a hoop rolls with its centre moving at velocity v show that it

asked by SING on July 6, 2013
95. ## statistics

The participants in a weight-loss class lost the following weights (in pounds) after three weeks of dieting:3,6,0,3,0,0 Assuming that these weights constitute an entire population, find the standard deviation of the population. Round your answer to at

asked by roy on March 28, 2011
96. ## Math

1. Use formulas to find the lateral area and surface area of the given prism. Round your nearest answer to the nearest whole number. use the large 19x6 m rectangles on the top and bottom as the bases. Left corner is 2m, bottom length is 19m, and right face

asked by Tim on May 16, 2016
97. ## Another binomial distribution question

hi, i'd also really like some help for another binomial distribution question, i have no idea where to start... the question is: A manufacturer makes 10,000 ball point pens per day and estimates that 400 will be defective. She decides that if a random

asked by elle on August 25, 2007
98. ## physics

a 1500kg car travelling east with a speed of 20m/s collides at an intesection with a 2500kg van travelling south at a speed of 15m/s.The vehicle undergoes a perfectly inelastic collision, and the wreckage slides 6m before coming to rest.Find the magnitude

asked by takunda on November 2, 2014
99. ## math

find the compound ammount \$1000 at 6% compounded annually for 8 years Use A=P*(1+i)^n where P=1000, i=.06 and n=8 P is the Principal, i is the annual interest rate expressed as a decimal,and n in the number of periods in the compounding period. BTW, are

asked by john on September 19, 2006
100. ## math

Problem: Lexington, and Elizabethtown, Kentucky are 79 miles apart. If the distance on the map is 2 1/2 inches, find the scale of the map. do i make a ratio for inches to miles? is it 2.5x inches = 79 miles?

asked by Kevin on February 9, 2016