1. Calculus

    Your Porsche's gas mileage (in miles per gallon) is given as a function M(x) of speed x in miles per hour. It is found that M'(x) = 3,600x−2 − 1/ (3,600x−1 + x)2. Estimate M'(10), M'(60), and M'(90). (Round your answers to seven decimal places.)

    asked by Justin on September 18, 2013
  2. math

    y = log x If y = 10, then what is x? is this the answer y = log x 10 = log x 10 = 10^x x = 1 your second last line should say 10^10 = x so x= 10000000000 (assuming your base of the log x was 10) Hot stuff: Your IP address has been recorded. You have been

    asked by bobpursley on April 20, 2007
  3. Chemistry

    Given the following functions, answer the questions: Temperature (°C) Kw 0 1.1410−15 25 1.0010−14 35 2.0910−14 40. 2.9210−14 50. 5.4710−14 Is the autoionization of water exothermic or endothermic? (b) What is the pH of pure water at 35°C? (c)

    asked by Margaret on February 20, 2013
  4. reading

    Read the following passage from “The Medicine Bag.” But after they left, Mom said, “No more visitors for a while, Martin. Grandpa won’t admit it, but his strength hasn’t returned. He likes having company, but it tires him” That evening, Grandpa

    asked by lysii on January 2, 2013
  5. math

    A 16-ft ladder is sliding down a wall as shown in the figures below. The variable h is the height of the ladder's top at time t, and x is the distance from the wall to the ladder's bottom. Suppose that the top is sliding down the wall at a rate 5 ft/s.

    asked by Jacob on June 29, 2010
  6. programming

    if n is the number of seconds between lightning and thunder,the storm is n/ Miles away. write a program that reads the number of seconds between lightning and thunder and report the distance of the storm rounded to two decimal places

    asked by Given on March 4, 2016
  7. statistics

    The response to a question has three alternatives: A, B, and C. A sample of 120 responses provides 52 A, 29 B, and 39 C responses. Show the frequency and relative frequency distributions (use nearest whole number for the frequency column and 2 decimal for

    asked by Anonymous on February 10, 2015
  8. pre-calculus

    solve the exponential equation. express the solution in terms of natural logarithims. Then, use a calculator to obtain a decimal point approximation for the solution. e^x=12.3 What is the solution in terms of natural logarithims? The solution set is ?

    asked by ladybug on October 6, 2012
  9. Algebra

    It takes 15 men working steadily 4 days to dig the foundation for a new apartment. How many days would it have taken 25 men working at the same rate to dig the foundation? Express your answer as a decimal to the nearest tenth.

    asked by Seth on December 31, 2014
  10. Chemistry

    Determine the pH (to two decimal places) of a solution prepared by adding 15.9 mL of 0.0551 M sodium hydrogen oxalate (NaHOOCCOO) to 0.488 g of sodium oxalate (Na2OOCCOO). Hydrogen Oxalate pKb of 12.77 Oxalate pKb of 9.81

    asked by Reven on December 6, 2011
  11. statistics

    you have a box of 12 widgets whose average weight for each individual widget is 2.6 pounds with a standard deviation of 3.3 pounds. Based on this information, what is the mean, taken to 1 decimal place, for the sample average of the weight of the widgets

    asked by chandler on July 10, 2014
  12. math

    Find the length of the arc on a circle of radius r intercepted by a central angle θ. (Round your answer to two decimal places.) Radius r: 20 feet Central Angle θ: π/4 Arc Length s: radians

    asked by Danny P. on June 4, 2018
  13. Calculus - Newton's Method

    Use the Newton's Method to approximate the real root of the equation: f(x)=x-2+cosx=0 a) What is the iterative equation of Newton's method of the given equation? b) Iterate the equation with starting point x1=5 until you get a repetition of the four digits

    asked by Jaime on March 23, 2017
  14. PLZ HELP MT MIND WILL EXPLODE I DONT UNDERSTAND!!!

    1. The table shows the results of spinning a four-colored spinner 50 times. Find the experimental probability and express it as a decimal. P(not red) = ? (1 point) a 0.6 b 0.4 c 0.2 d 0.3 3. The table below shows the results of flipping two coins. How does

    asked by Alexia Marsel on May 20, 2016
  15. Stats/ Probability

    Repeated die toss experiment. A fair die is tossed repeatedly, and the sequence of numbers that turn up is recorded, until a 1 is obtained. When a 1 is obtained, the experiment is over, but the 1 is included in the sequence. Thus every outcome is a

    asked by denim on September 30, 2013
  16. Art

    I left out the following sentences.Thank you very much. 1) As a matter of fact, they don’t just sell products, they sell lifestyles. They show the lives of famous people without even showing the brand they are trying to sell. 2) When the first ads came

    asked by Franz on May 24, 2012
  17. trig

    A guy wire runs from the ground to a cell tower. The wire is attached to the cell tower 150 feet above the ground. The angle formed between the wire and the ground is 40° (see figure). (Round your answers to one decimal place.)

    asked by ariel on June 20, 2012
  18. math

    the total capacity of 1 carton is the same as the total capacity of 2 identical cups. If 1.8 liters of water are needed to fill up 3 identical cups and 2 identical cartons, what is the capacity of a cup? express your answer correct to 2 decimal places

    asked by heather on October 17, 2013
  19. maths

    Calculate the total present value today (to 2 decimal places) of the following cash flows: $300 due in 2 years from today $1,000 due in 5 years from today $200 due in 15 years from today Use an interest rate of 12% per annum.

    asked by riya on July 4, 2017
  20. English

    Can you please check these sentences about Hamlet? Thank you. 1) Hamlet wonders whether he should make a stand against his sea of troubles or leave things as they are. 2) He believes that both active and passive resistance is bound to meet failure. 3)

    asked by Franco on January 27, 2011
  21. Finance

    You have reviewed the books of Anderson Incorporated and learned the following: 1.) Quick Ratio is 1.4 2.) Current Ratio is 3.1 3.) Inventory Turn-Over is 4.9 times 4.) Current Assets are $820,000 5.) Cash and equivalents are $115,000 Using this

    asked by Nk on September 21, 2012
  22. math

    an extension ladder adjusts in length from 10 feet to 16 feet. suppose you've leaned your ladder against your house so that, at its minimum length, it touches the base of your first floor window, 9 feet above the ground. without moving the base, how high

    asked by Anonymous on September 26, 2009
  23. Calculus 1

    A family wants to fence a rectangular play area alongside the wall of their house. The wall of their house bounds one side of the play area. If they want the play area to be exactly 1600ft^2, what is the least amount of fencing needed to make this? Round

    asked by Grant on November 1, 2015
  24. Corporate Finance

    A firm has a long-term debt-equity ratio of 0.5. Shareholders’ equity is $1.07 million. Current assets are $256,500, and the current ratio is 1.9. The only current liabilities are notes payable. What is the total debt ratio? (Round your answer to 2

    asked by shari on June 2, 2013
  25. statistics check

    The computer-science aptitude score, x, and the achievement score, y (measured by a comprehensive final), were measured for 10 students in a beginning computer-science course. The results were as follows. (Give your answers correct to two decimal places.)

    asked by tracy12 on June 24, 2013
  26. statistics

    in a sample of 1000 people ,113 are left handed.the results of the sample are shown in the table.find the probability that a randomly selected person is a left handed,given that she is a woman.

    asked by ron on October 4, 2011
  27. statistics

    The computer-science aptitude score, x, and the achievement score, y (measured by a comprehensive final), were measured for 10 students in a beginning computer-science course. The results were as follows. (Give your answers correct to two decimal places.)

    asked by statistics student on November 1, 2013
  28. Calculus

    The hypotenuse of a right triangle has one end at the origin and one end on the curve y=x^(7)e^(-7x) , with x greater than or equal to 0. One of the other two sides is on the x-axis, the other side is parallel to the y-axis. Find the maximum area of such a

    asked by George on October 21, 2008
  29. math

    The computer-science aptitude score, x, and the achievement score, y (measured by a comprehensive final), were measured for 10 students in a beginning computer-science course. The results were as follows. (Give your answers correct to two decimal places.)

    asked by Sue 12 on May 31, 2013
  30. Math algebra

    The radioactive decay of a substance is expressed by A=A^0 e^ -kt, where the initial amount A^0, decays to an amount A after t years. The positive constant k differs for each substance. Strontium 90 decays such that k=.028. Find out how much of 1,000 mg of

    asked by Emily on December 15, 2016
  31. Computer Science - MATLAB

    thanks mathmate. It's way above my head to. I got another question Consider the following two equations: x^2 + y^2 = 42 x + 3y + 2y^2 = 6 Define a symbolic equation for each, and solve it by using MATLAB's symbolic capability. Could you solve these

    asked by Lee on July 20, 2011
  32. Math

    The question is: Determine the surface area and volume of this cylinder, correct to one decimal point. The cylinder has a radius of 4 inches and the height is 3 yards. This site explains how to find the surface area and volume of a cylinder.

    asked by Robin on June 15, 2006
  33. physics

    an 6lb object is hanging from a 10lb object which in turn is hanging from a ceiling. need to find tension(T1) of rope from ceiling to 10lb object and tension(T2) from the 10lb object to the 6lb object. please, need assitance in trying to set up the

    asked by greg on September 26, 2006
  34. math

    1.)There are 35 roses.7 of theme are white and the rest are red.how many red roses are there? 2.)There were 27 children in the classroom.several more children came.and there were 58 children in all.How many children came in? 3.)Marie picked 31 empty

    asked by joshua quiban on April 30, 2016
  35. physics

    A student proposes to measure the gravitational constant G by suspending two spherical objects from the ceiling of a tall cathedral and measuring the deflection of the cables from the vertical. Draw a free-body diagram of one of the objects. (Do this on

    asked by phys on April 9, 2010
  36. Quick english help

    Please check & see if I classified these sentences as simple, complex, or compound correctly! 1. His tie is going to choke him unless we can get it off. (Is this a complex sentence?) 2. She laughed so hard until the teacher told her to stop. (Is this a

    asked by Anonymous on December 15, 2014
  37. math

    How do you multiply decimals If you look at the box up above that says jump, scroll down to the math section. If you select arithmetic you'll see a section on decimals there. That section has a subsection on multiplying them. when you multiply decimals you

    asked by Taylor on September 9, 2006
  38. Chemistry

    If a 3.9 lb ball of aluminum is coated with a 644 micrometer layer of gold, what is the density (in g/mL) of the gold-coated aluminum ball? The densities of aluminum and gold are 2.70 g/mL and 19.32 g/mL, respectively. Type your numerical answer to 2

    asked by John on July 2, 2018
  39. Math HURRY !!!!!!!!

    These 3 questions are very confusing can some plz tell me how to solve them 1) What percent of 9 is 4? 2) What percent of 25 is 10? 3) What percent of 40 is 12? THANKS FOR HELPING!!! 1)44% 2)40% 3)30% thanks but how did u get the answer did u multiply or

    asked by rebecca on January 9, 2007
  40. stat

    While technology or a​ t-distribution Distribution Table can be used to find the​ area, in this​ problem, technology will be used. Find the​ P-value associated with t t0equals=1.34 and 19 degrees of​ freedom, rounding to three decimal places. Can

    asked by Justin on December 13, 2015
  41. physics

    A child, hunting for his favorite wooden horse, is running on the ground around the edge of a stationary merry-go-round. The angular speed of the child has a constant value of 0.264 rad/s. At the instant the child spots the horse, one-quarter of a turn

    asked by Anonymous on March 11, 2011
  42. English

    Read each sentence identify and rewrite the subordinate clause 1. Adam studied for his science test because he wanted to do well. because he wanted to do well 2.You should turn the music down so that your brother can study. so that your brother can study

    asked by Jerald on January 25, 2013
  43. math

    An ancient Korean drinking game involves a 14-sided die. The players roll the die in turn and must submit to whatever humiliation is written on the up-face: something like "Keep still when tickled on face." Six of the 14 faces are squares. Let's call them

    asked by AnonYmous on May 15, 2016
  44. Physics

    A certain meter stick is calibrated in millimeters (the distance between two consecutive marks is ONE mm). A student measured the longest edge of a book and found that it was greater than 364 mm and less than 365 mm, but it was CLOSER to 365 mm than 364

    asked by Rene on September 14, 2012
  45. statistics

    According to a website about salaries, the national average salary as of October 2003 for a human resources clerk was $29,932. We assume that the annual salaries for clerks are normally distributed with a standard deviation of $1,860. (Give your answers

    asked by holly on July 7, 2012
  46. MATH

    I have a test in about an hour and a half and am having some difficulty on the review the teacher gave us to help us prepare. Any help would be great! *Convert the polar equation to a rectangular equation. rsin(theta - Pi/4) =5 -The answer is given as y=

    asked by Daisy on April 4, 2013
  47. Business

    If one company(A) owns another company(B) and Company B owns a third company (C) is it safe to say that Company A owns part of Company C? A real life example is the sports media group TSN is 20% owned by ESPN. ESPN is then in turn 80% owned by The Walt

    asked by Don on March 14, 2011
  48. Probability and statistic

    Suppose the counts recorded by a Geiger counter follow a Poisson process with an average of two counts per minute. Round the answers to 3 decimal places. (a) What is the probability that there are no counts in a 30-second interval? (b) What is the

    asked by Maria on July 1, 2016
  49. Math

    Find the accumulated amount A if the principal, P = $3700 is invested at the interest rate r = 7%/year for t = 12.5 years compounded semiannually. Round your answers to two decimal places. ​ a. The accumulated amount is $8544.01. b. The accumulated

    asked by Jass on October 22, 2016
  50. Math 1 question

    There are 35 marbles in a bag: 9 blue marbles, 8 green marbles, 4 red marbles, 8 white marbles, and 6 yellow marbles. Find P(red). Write the probability as a fraction in simplest form, a decimal, and a percent. four over thirty-one, 0.129, 12.9% four over

    asked by HeELP ME FAST!!! on May 24, 2014
  51. Algebra

    If a pro basketball player has a vertical leap of 25 inches, what is his hang time? Use the hang time function V = T^2 Hang time is _________ seconds. Simplify the answer. Type an integer or a decimal Round to the nearest tenth. The answer I came up with

    asked by Lori on August 17, 2010
  52. math plz

    A sales manager was given a bonus of $6,350 on the year's sales of $440,000. When answering the following questions, please make sure your final answers are in percentage form and are accurate to 2 decimal places. For example 34.56%. a) What was the bonus

    asked by suvi on February 8, 2010
  53. programming ( qbasic)

    i was given this program by my teacher. it converts decimal number to binary number.. Why is that FIX kept in front of (n/2) ...6th line of the program. why is that FIX written and why? i didn't get it CLS INPUT “ENTER A NUMBER”; N WHILE N 0 A = N MOD

    asked by mark on November 3, 2015
  54. would someone please check this math

    1 four buttons have diameters of 5/8 , 3/4, 9/16, and 7/8 which buttons is smallest? answer 9/16 2. I spent 1/3 of my time doing math homework and 2/7 preparing for a history test . what fraction of study time remain? answer: 13/21 3. least common multiple

    asked by larry on February 9, 2007
  55. Science 6

    When you turn on a battery powered flashlight, you transform... A:heat energy into light and chemical energy. B:chemical energy into electrical energy and light. C:heat energy into chemical energy and light. D:eletrical energy and light energy into

    asked by Jaden on March 1, 2017
  56. Math

    1. Write a ratio and a percent for the shaded area. a 4x4 grid with 5 blocks shaded (1 point) one over five, 25% five sixteenths, 31.25% one over four, 20% one over four, 25% 2. Model 32% on a 5 × 5 grid. (1 point) a 5 by 5 grid has 8 cells shaded. a 5 by

    asked by Please, HELP on January 11, 2016
  57. Physics

    A car is safely negotiating an unbanked circular turn at a speed of 18 m/s. The road is dry, and the maximum static frictional force acts on the tires. Suddenly a long wet patch in the road decreases the maximum static frictional force to one-ninth of its

    asked by Anon on September 25, 2014
  58. PHYSICS

    A car is safely negotiating an unbanked circular turn at a speed of 29 m/s. The road is dry, and the maximum static frictional force acts on the tires. Suddenly a long wet patch in the road decreases the maximum static frictional force to one-ninth of its

    asked by Lindsay on October 3, 2012
  59. physics

    . A car is safely negotiating an unbanked circular turn at a speed of 19 m/s. The road is dry, and the maximum static frictional force acts on the tires. Suddenly a long wet patch in the road decreases the maximum static frictional force to one third of

    asked by vik on October 23, 2014
  60. College Algebra

    Hey, I would love if someone could please look over my answers. I just learned this yesterday and want to make sure I did my hw correct. Thanks!!! Solve for x. Round answers to four decimal places where appropriate: 1. 6^x=6^2x-1 Ans.= x=1 2. 3^x=1/27

    asked by Natalie on April 28, 2016
  61. Science - Climate change

    What does this paragraph mean? Why is the air sinking over the desert and how does it rise with rain systems thousands of kilometers away? In fact, it has been calculated that the Sahara Desert actually loses more infrared radiation than it gains solar

    asked by Jasmine373 on December 13, 2017
  62. Science - Climate change

    What does this paragraph mean? Why is the air sinking over the desert and how does it rise with rain systems thousands of kilometers away? In fact, it has been calculated that the Sahara Desert actually loses more infrared radiation than it gains solar

    asked by Jasmine373 on December 13, 2017
  63. literature

    Can anyone find me the real title of this poem by Rabindranath Tagore? "Thou tanglest my heart in a hundred nooses of love, What is this thy play? It is but a little feeble life-- Why so many bonds to bind it? At every turn and every moment Thou winnest my

    asked by klarmaesen on July 22, 2010
  64. physics

    (a) How high a hill can a car coast up (engine disengaged) if friction is negligible and its initial speed is 78.0 km/h? m (b) If, in actuality, a 750 kg car with an initial speed of 78.0 km/h is observed to coast up a hill to a height 12.0 m above its

    asked by mike on August 4, 2014
  65. physics

    A 2000-kg car rounds a circular turn of a radius 20m. if the radius flat and the coefficient of friction between tires and road is .70, how fast can the car go without skidding? centripetal force = frictional force m v^2/r= mg*mu solve for v. um i was

    asked by becky on January 3, 2007
  66. Physics

    In Figure 10-20, the magnitude of the force necessary to stretch a spring is plotted against the distance the spring is stretched. Figure 10-20 (a) Calculate the slope of the graph, k, and show that F = kd, where k = 25 N/m. (b) Find the amount of work

    asked by Claire on October 25, 2011
  67. maths

    The mean weight of the contents of samples of 30 bags of sugar has standard error 0.008kg. Choose the option that is closest to the probability, to three decimal places, that the mean weight of the contents of samples of 30 bags of sugar will be 1kg or

    asked by albert on May 11, 2011
  68. excel graphing

    In cell D21, type the formula to calculate the % change from January to February. That formula is: =(J18-E18)/ABS(E18). Format the result in the Percentage style and decrease the decimal places if necessary to round the result to the nearest whole percent

    asked by kayla on May 24, 2011
  69. maths

    The mean weight of the contents of samples of 30 bags of sugar has standard error 0.008kg. Choose the option that is closest to the probability, to three decimal places, that the mean weight of the contents of samples of 30 bags of sugar will be 1kg or

    asked by albert on May 10, 2011
  70. maths

    The mean weight of the contents of samples of 30 bags of sugar has standard error 0.008kg. Choose the option that is closest to the probability, to three decimal places, that the mean weight of the contents of samples of 30 bags of sugar will be 1kg or

    asked by albert on May 9, 2011
  71. Statistics

    I already found part A just need help with B! The computer-science aptitude score, x, and the achievement score, y (measured by a comprehensive final), were measured for 10 students in a beginning computer-science course. The results were as follows. (Give

    asked by Casey on November 8, 2013
  72. maths

    The mean weight of the contents of samples of 30 bags of sugar has standard error 0.008kg. Choose the option that is closest to the probability, to three decimal places, that the mean weight of the contents of samples of 30 bags of sugar will be 1kg or

    asked by albert on May 13, 2011
  73. maths

    The mean weight of the contents of samples of 30 bags of sugar has standard error 0.008kg. Choose the option that is closest to the probability, to three decimal places, that the mean weight of the contents of samples of 30 bags of sugar will be 1kg or

    asked by albert on May 11, 2011
  74. college trip

    6) A Ferris wheel at the 1904 St. Louis World’s Fair had a diameter of 250 ft and made one revolution in 30 minutes a) Find the exact angular speed in radians per hour b) Find the linear speed of a person riding the Ferris wheel in miles per hour. Round

    asked by Asia on September 27, 2016
  75. maths

    The mean weight of the contents of samples of 30 bags of sugar has standard error 0.008kg. Choose the option that is closest to the probability, to three decimal places, that the mean weight of the contents of samples of 30 bags of sugar will be 1kg or

    asked by albert on May 14, 2011
  76. Help needed- PreCalc

    Please help me understand how to solve this questions. I need step by step solution and answer because I find it difficult to understand when someone on here writes the answer instead of showing step by step work on how he/she got the numbers to get the

    asked by chichi on August 4, 2016
  77. Physics urgent help needed

    The pressure and volume of a gas are changed along a path ABCA in the figure. The vertical divisions on the graph represent 2.5 105 Pa, and the horizontal divisions represent 1.0 10-3 m3. Determine the work done (including algebraic sign) in each segment

    asked by Papito on April 25, 2007
  78. PHYSICS

    Consider two single turn coils labeled 1 and 2 that are positioned close to each other. The switch S has been open for a long time. If the switch is now closed and the current through coil 1 is in the direction shown and increasing, which of the following

    asked by aaka on December 16, 2013
  79. Physics pls help

    Consider two single turn coils labeled 1 and 2 that are positioned close to each other. The switch S has been open for a long time. If the switch is now closed and the current through coil 1 is in the direction shown and increasing, which of the following

    asked by aaka on December 17, 2013
  80. Physics Help pls

    Consider two single turn coils labeled 1 and 2 that are positioned close to each other. The switch S has been open for a long time. If the switch is now closed and the current through coil 1 is in the direction shown and increasing, which of the following

    asked by aaka on December 16, 2013
  81. Finance

    The following information was available as of the close of business June 1, 2004 on government of Canada bonds. Coupon...Maturity.....Price.....Yield 5.00%......June 1, 2005......102.35......2.60 10.50%......June 1, 2006......113.91......3.26

    asked by Allen on November 6, 2012
  82. statistics

    Thirty-two percent of adults did not visit their physicians' offices last year. The probability, rounded to four decimal places, that in a random sample of 8 adults, exactly 3 will say they did not visit their physicians' offices last year is:

    asked by Vera on October 26, 2013
  83. statisticsWere did i go wrong thank you

    Find the range and the standard deviation (correct to two decimal places). 83, 96, 100, 100, 106=divided by 5=97 I did the (83-97)+(96-97)+(100-97)+(100+97)=106-97)= I know I add than divide by 5 and I can not come up with Standard deviation. Where am I

    asked by Mary Ann on June 1, 2014
  84. algebra

    Solve the exponential equation. Express the solution in terms of natural logarithms. Then, use a calculator to obtain a decimal approximation for the solution. e^x = 20.9 What is the solution in terms of natural logarithms? The solution set is { }.

    asked by edward on February 3, 2016
  85. Math

    1. An assessment rate is 47%. The property tax is $39.94 per $1,000. What is the effective tax rate? Round to the nearest tenth of percent. 2. A property tax rate is $7.79 per $100 of assessed value. what is the tax rate as a decimal? Please help.

    asked by Mer on April 14, 2014
  86. math

    Which statements are true for irrational numbers written in decimal form? A. Irrational numbers are nonterminating. B. Irrational numbers are repeating. C. Irrational numbers are nonrepeating. D. Irrational numbers are terminating.

    asked by Claire on April 19, 2016
  87. physics

    1. If our sun shrank in size to become a black hole, using the gravitational force equation, explain why the Earth's orbit would not be affected. 2. Strictly speaking, you weigh a tiny bit less when you are in the lobby of a massive skyscraper than you do

    asked by confused on July 13, 2010
  88. Physics HELP!

    A war-wolf, or trebuchet, is a device used during the Middle Ages to throw rocks at castles and now sometimes used to fling pumpkins and pianos. A simple trebuchet is shown in the figure. Model it as a stiff rod of negligible mass 3.00 m long and joining

    asked by Holly on November 6, 2012
  89. physics

    a 700 N man stands on a scale on the floor of an elevator. The scare records the force it exerts on whatever is on it. What is the scale reading if the elevator has an acceleration of 1.8 m/s squared up ? I need help with what formula (s) to use to get the

    asked by courtland on February 5, 2010
  90. Econ stats

    Sidney Crosby’s score statistics for the regular 2007 championship season were used to construct the following table: Experimental Outcome (x), Number of Occurrences during the 2007 Season (0, 358) (1, 175) (2 28) (3 3) (4 10) a. Use the relative

    asked by Maya on November 2, 2017
  91. math

    From 70 feet away from the base of a tree on level ground, the angle to the top of a tree is 60⁰. What is the height of the tree? What is the approximate distance from the vantage point to the top of the tree, to one decimal point? (Assume that the tree

    asked by D on June 12, 2013
  92. Precal

    The point (r,theta) in polar coordinates is (7,5) in rectangular coordinates. What is the point (2r, theta + pi/2) in rectangular coordinates? So I tried this problem and got r = sqrt(74). But while finding the value of theta, I got it equal to cot(5/7)

    asked by Dave on August 9, 2014
  93. math

    Super Bowl XLIV, which aired on February 7, 2010, included a record 47 minutes and 50 seconds of advertising in 104 commercial messages, the most of any Super Bowl. What was the average length, in seconds, of an ad shown during Super Bowl XLIV? Express

    asked by Anonymous on February 10, 2011
  94. calculus

    Use Newton's method to solve the equation sec x = 4 in the interval x in (0, pi/2). In other words, use Newton's Method to compute arcsec(4). (You need to make a good initial guess for the root otherwise Newton's method will probably fail. Please justify

    asked by Anonymous on April 13, 2011
  95. Statistics

    Thirty-three small communities in Connecticut (population near 10,000 each) gave an average of x = 138.5 reported cases of larceny per year. Assume that σ is known to be 42.9 cases per year. (a) Find a 90% confidence interval for the population mean

    asked by Amy on December 3, 2016
  96. Beautiful Paradise, ms. sue

    How would you deal with economic equity, with economic security, with economic stability? I would deal with economic equity, with economic security, with economic stability by seeing how all the individuals work, they will be tested on their skills, and

    asked by mary on June 24, 2011
  97. science

    Youre travelling down the road in a car with a total mass(including passengers) of 2.24 X 10^3 a)What is the change in kinetic energy of the car if you slow down from 80km/h to 70km/h(reducing your speed by 10km/h) B)what is the change in kinetic energy of

    asked by Francis on January 22, 2017
  98. Beautiful Paradise, ms. sue

    How would you deal with economic equity, with economic security, with economic stability? I would deal with economic equity, with economic security, with economic stability by seeing how all the individuals work, they will be tested on their skills, and

    asked by mary on June 24, 2011
  99. reading

    It was the summer before Ichiro started fifth grade, and he was about to turn ten. His family had just moved to a new city, so he didn’t know many other children, but his mother suggested that he host a birthday party and invite some of the friends he

    asked by lana on October 18, 2015
  100. math

    10m/11p.44p/20k.15k/8m we are multiplying and dividing rational expressions. can ne1 help? I have no idea what you need. Your first line makes no sense. i know, it doesn't make any sense to me either...it's fractions 10m/11p times 44p/20k times 15k/8m. we

    asked by Joshua on March 5, 2007