1. trigonometry

    a yardstick, held vertically on a level surface, cast a shadow 1 foot 8 inch long. Find the tangent of the angles that the rays of the sun make with the horizontal

    asked by ivan on June 19, 2016
  2. Triginometry

    a yardstick, held vertically on a level surface, cast a shadow 1 foot 5 inch long. Find the tangent of the angles that the rays of the sun make with the horizontal.

    asked by Veronica on February 29, 2016
  3. math

    how many side and angles does a trapezoid angle, hexagon, and pentagon have? solve each equation: 13 + y = -3, 3y + 8=3, y over 3= -9 need help with + & - rules for adding whole numbers, decimals, fractions and integers ( do not understand) and rule for

    asked by joshuah on May 23, 2010
  4. math(please help urgent)

    1) Find the values (if possible) of the six trigonometric functions of o if the terminal side of o lies on the given line in the specified quadrant. y=1/3x 2)Evaluate (if possible)the sine, cosine, and tangent of the angles without a calculator. (a)

    asked by Hannah on January 15, 2010
  5. Math

    Find the sum of the interior angles of a nonagon. (1 point) 140° 1,620° 1,260°------ 1,450° My teacher showed this question and she explained the answer was the 3rd one but i just don't get it

    asked by RaNdOm PeRsOn on February 25, 2015
  6. trigonometry

    a yardstick, held vertically on a level surface, cast a shadow 1 foot 8 inch long. Find the tangent of the angles that the rays of the sun make with the horizontal.

    asked by ej on June 20, 2013
  7. math

    calculate the resistances of (a) 100-watt 120-volt incandescent lamp, (b) a 750-watt 115-volt toaster, (c) a 1300 watt 110-volt portable iron.

    asked by lee on August 25, 2014
  8. Physics

    A 500 g ball moving to the right at 9.2 m/s hits a wall and bounces in the other direction with a speed of 4.9 m/s. If the ball experiences an average force of 110 N during the impact with the wall, for how long is the ball in contact with the wall?

    asked by Angie on February 13, 2018
  9. Physics

    True or false Consider a simple frictionless roller-coaster. It begins at x = 0, at a height of y = H. Then it drops into a dip, reaching a minimum at x = 100, with zero height (y = 0). Finally, it goes back up at x = 200, but only reaches a height of y =

    asked by Monica on March 12, 2014
  10. algebra

    A SALES PERSON RECEIVES $250 PER WEEK AND A 3% COMMISSION ON ALL SALES OVER $5000 IF HER WEEKLY SALES TOTAL IS $9525 WHAT ARE HER TOTAL EARNINGS

    asked by Keonna on September 20, 2017
  11. sentence and paragraph

    8–12 sentences..You’ve applied for a specific job in your field of study. The Human Resources Department arranges an interview and tells you to bring with you a polished piece of writing for them to evaluate your writing skills. The paragraph must

    asked by llw on October 23, 2012
  12. Chemistry

    (My answers) 1. A sample of gas occupies 33 mL at -101 Celsius what volume does the sample occupy at 97 Celsius? (70.578) 2. There is a balloon that contains 2125 L of gas at 55 Celsius and 99 kPa. This balloon rises to an altitude where the pressure is

    asked by Samantha on April 9, 2018
  13. C Programming

    how do i write a C program that accepts sales made by 5 sales reps for the 4 months that they have been selling the company's products. The program should then find the total sales for 4 months, total sales for each sales rep, and total sales per month.

    asked by Anonymous on September 9, 2014
  14. physics

    A monkey is sitting on a wood plate attached to a rope whose other end is passed over a tree branch, as shown in the figure. The monkey holds the rope and tries to pull it down. The combined mass of the monkey and the wood plate is 117 kg. a) What is the

    asked by lissa on March 2, 2012
  15. PHYSÝCS I

    A monkey is sitting on a wood plate attached to a rope whose other end is passed over a tree branch, as shown in the figure. The monkey holds the rope and tries to pull it down. The combined mass of the monkey and the wood plate is 117 kg. a) What is the

    asked by ADRÝAANA on March 1, 2012
  16. trig

    A triangle T has vertices P, Q and R. The length of the edge between P and Q is 10, and the angles at P and Q are 60degree and 45degree respectively. What is the area of T? (A) 50p3/(1 +p3) (B) 10p3/(1 +p3) (C) 50/(3 + 3p3) (D) 10/(3 + 3p3)(E) None of the

    asked by minh on May 7, 2011
  17. Geometry

    Suppose both pairs of opposite sides of a quadrilateral are parallel. Which angles of the quadrilateral must be supplementary? I do not understand what this question is asking and how I should answer. Please help if you can!

    asked by Faith on October 29, 2009
  18. trigonometry - maths

    The difference between the two acute angles of a right angled triangle is 2pie /5 radians . Express the angle of the triangle in degree and grade .

    asked by devi on July 10, 2017
  19. Geometry

    Find the area of the isosceles trapezoid with lower base 18cm, legs 6cm and base angles 30 degrees

    asked by Marceo on March 24, 2011
  20. Math

    (1) Which of the following ingegers can not represent the lengths of the sides of a triangle? (9,10,11) (4.7,9) (4,8,12) & (6,6,11) (2) The measures of two supplementary angles are in the ratio 5:1. What is the measure of the smaller triangle?

    asked by Peggy on February 23, 2007
  21. elementary math for teachers

    Suppose that a given parallelogram is not a rhombus or a rectangle. Which of the following can you conclude about this parallelogram? A) It is a square. B) Its angles are not all congruent. C) Its diagonals are perpendicular bisectors of each other. D)

    asked by jen on October 16, 2009
  22. geometry

    Write a two column proof of the Corollary Triangle Sum Theorem. The acute angles of a right triangle are complementary. m

    asked by Steve on October 24, 2006
  23. Calculus

    The hypotenuse of a right triangle is 25 ft. If one of the acute angles increases at rate of 4 degrees per second, how fast is the area increasing when the angle is 30 degrees.

    asked by Arvin on October 17, 2012
  24. Geometry

    Two Right Triangles have equal acute angles, yet one triangle is larger than the other. Therefore, the triangles much be _________________. I've looked everywhere in my books and on the internet and I cant find it.

    asked by Kaite Lynn on May 2, 2008
  25. geometry

    the lengths of the diagonal of a rhombus are 2 in and 5 in. find the measure of the angles of the rhombus to the nearest degree. if it helps, we are learning how to use tangent right now!

    asked by Lily on February 14, 2011
  26. trig

    A triangle T has vertices P, Q and R. The length of the edge between P and Q is 10, and the angles at P and Q are 60degree and 45degree respectively. What is the radian measure of the angle at R? (A) 5pi/24 (B) 5/24 (C) 5pi/12 (D) 5/12 (E) None of the

    asked by minh on May 7, 2011
  27. math

    4. Classify the triangle with angles measuring 69º, 42º, and 69º. 6. List all of the quadrilaterals with exactly one pair of parallel sides.

    asked by Jman on January 22, 2013
  28. Physics

    A wheel has a radius of 3.1 m. How far (path length) does a point on the circumference travel if the wheel is rotated through the following angles, respectively? (a) 36° m (b) 36 rad m (c) 36 rev m

    asked by Antonio on June 21, 2015
  29. geometry

    I'm stuck on this question please help. "Lines p and q intersect to form adjacent angles 1 and 2.If angle 1=3x+18 and angle 2=-8y-70,find the values of x and y so that p is perpendicular to q.

    asked by Rick on August 27, 2012
  30. Geometry

    a tree on a 30 degrees grows straight up. What are the measures of the greatest and smallest angles the tree makes with the hill? explain

    asked by Thu on September 23, 2014
  31. trigonometry

    an isosceles triangle is inscribe in aradius 100 in .find the angles of the triangle if it is base subtends an arc of 143.7 in

    asked by jophy on November 28, 2012
  32. geometry

    In triangle ABC, angle B is a right angle. Find the remaining sides and angles. Round your answers to the nearest tenth. a = 3, c = 3

    asked by Anonymous on December 23, 2011
  33. Trigo

    Two observers on opposite sides are 350m apart and are looking at a balloon if the angles of elevation from each observer are 30degree and 60degree respectively,how high is the balloon?

    asked by Dend on January 31, 2015
  34. Physics

    2 forces acting at a point make angles of 25 and 65 degrees respectively with their resultant which has a magnitude of 150 N .Find the magnitude of the two components.

    asked by Joseph on December 31, 2010
  35. geometry

    Five of the angles of a hexagon are 94, 108, 150, 124, and 104 degrees. The remaining angle measures ____________________ degrees.

    asked by deisy on February 22, 2015
  36. math

    Suppose that a given parallelogram is not a rhombus or a rectangle. Which of the following can you conclude about this parallelogram A) It is a square. B) Its angles are not all congruent. C) Its diagonals are perpendicular bisectors of each other. D) None

    asked by chandice on October 11, 2009
  37. Physics

    A 1.0cm wide diffraction grating has 1000slits. It is illuminated by light of wavelength 550nm. What are the angles of the first two diffraction orders?

    asked by Alexander on March 15, 2013
  38. Physics

    A light ray in air is incident on a water surface at a 44° angle of incidence. Find each of the following angles. (b) the angle of refraction °

    asked by DCM on March 6, 2012
  39. geometry

    Find the sum of the measures of the intieior angles of each polygon. -hexagon -pentagon -quadrilateral -octagon -16-gon -27-gon please

    asked by hello on February 21, 2018
  40. MATH HELP!!!

    Given a right triangle with a side of length 4 and a hypotenuse of length 7, find the measure of the two acute angles. (Round to the nearest hundredth.)

    asked by Taylor on July 2, 2010
  41. Geometry

    A tree on a 30 degree slope grows straight up. What are the measures of the greatest and smallest angles the tree makes with the hill?

    asked by Timothy on September 2, 2014
  42. Physics

    Consider a simple frictionless roller-coaster. It begins at x = 0, at a height of y = H. Then it drops into a dip, reaching a minimum at x = 100, with zero height (y = 0). Finally, it goes back up at x = 200, but only reaches a height of y = H/2. Assume

    asked by Mikayla on March 12, 2014
  43. Chemistry

    The bond energy of the O2 molecule is 495. a) calculate the minimum frequency and max wavelength of light required to break this bond. b) how many photons of this wavelength would it take in order to break open the bonds of all the oxygen molecules in a

    asked by Karen on November 7, 2007
  44. physics

    a cannon fire a bullet into a castle. leave the gun with velocity of 110 with an angle of 20. the bullet reaches highest point at P when it is 1 m above the castle. What is the height of the top of the castle? and waht is the horizontal distamce between

    asked by Elise on February 5, 2012
  45. Physics/Math

    A stuntman drives a car (without negative lift) over the top of a hill, the cross section of which can be approximated by a circle of radius R = 110 m. What is the greatest speed at which he can drive without the car leaving the road at the top of the

    asked by COFFEE on February 12, 2007
  46. Chemistry

    I was given a solution of HCOOH with hand approximate concentration of 0.20 moles and I need to titrate this with a 0.110 V mol of NaOH. If I add 20 milliliters of hcooh to the beaker before I titrate approximately what volume of NaOH will be required to

    asked by Kabw on September 30, 2016
  47. 5th grade

    Mike and Shannon harvested 110,793 pounds of winter wheat off of the Stone Ranch. There are sixty pounds in a bushel. They planted 23.3 acres of winter wheat. How many bushels per acre did the crop yield?

    asked by Briana on January 26, 2009
  48. Managerial Economics

    # of Fisherman Daily Tuna Catch 0 0 1 50 0.02 2 110 0.02 3 300 0.01 4 450 0.01 5 590 0.01 6 665 0.01 7 700 0.01 8 725 0.01 9 710 0.01 Suppose market price of tuna is $3.50/lb. How many fisherman should the company use if the daily rate is $100?

    asked by Janet on August 30, 2010
  49. physics

    Using Coulomb's Law, calculate the force of repulsion between a positive charge of 110 Coulombs and another positive charge of 220 coulombs separated by a distance of 2 meters. Use scientific notation. (Hint: use the proportionality constant)

    asked by LL on June 18, 2012
  50. Trig

    Plane leaves airport with heading of 110 degrees at 300 mph, the wing out of the southwest is 42 mph. locate the plane after 4 hours? find the distance back to airport and angle from due east?

    asked by Stone on November 15, 2013
  51. physics

    Using Coulomb's Law, calculate the force of repulsion between a positive charge of 110 Coulombs and another positive charge of 220 coulombs separated by a distance of 2 meters. Use scientific notation. (Hint: use the proportionality constant)

    asked by LL on June 17, 2012
  52. Science

    A person who has cystic fibrosis A.inherited two normal alleles from a parent B.inherited one mutated allele and one normal allele from each parent C.inherited two mutated alleles, one from each parent D.inherited two mutated alleles from a parent

    asked by Send Help on October 26, 2017
  53. Physics

    Two masses, m1 = 25.0 kg and m2 = 45.0 kg, are attached by a massless rope over a massless pulley as shown above?The angle of the frictionless incline is 27.0 degrees . Assume that m2 starts at rest and falls a vertical distance of 3.00 m. Assume m1 also

    asked by polly on October 10, 2014
  54. Maths

    ABCD is a quadrilateral in which angle ABC = 73°, angle C = 97°, angle D =110° if AE is parallel to DC & BE is parallel to AD & AE intersects BC at F find the measure of angle EBF

    asked by Vaisshnavi on September 13, 2016
  55. math

    A basketball player makes 110 out of 130 free throws. We would estimate the probability that the player makes the next free throw to be

    asked by Violet on January 31, 2014
  56. physics

    A box of Cheerios and a box of Wheaties are accelerated accross a horizontal force vector F applied to the Cheerios box. THe magnitude of the frictional force on the Cheerios box is 2 N and the magnitude of the frictional force on the Wheaties box is 4 N.

    asked by Bri on November 27, 2006
  57. environmental science for college

    Starting with a hypothetical population of 14,000 people and an even age distribution (1,000 in each age group from 1-5 to 66-70 years), assume that the population initially has a total fertility rate of 2.0 and an average life span of 70 years. Using the

    asked by sarah on March 28, 2010
  58. environmental science

    Starting with a hypothetical population of 14,000 people and an even age distribution (1,000 in each age group from 1-5 to 66-70 years), assume that the population initially has a total fertility rate of 2.0 and an average life span of 70 years. Using the

    asked by sarah on March 28, 2010
  59. math

    A planned building was going to be 100 feet long, 75 feet deep, and 30 feet high. The owner decides to increase the volume of the builing by 10% without changing the dimensions of the depth and the height. What will be the new lenght of this building? 1

    asked by Anonymous on May 5, 2009
  60. Brief calculus

    The marginal cost of producing the xth box of CDs is given by 9 − x/(x^2 + 1)^2. The total cost to produce 2 boxes is $1,200. Find the total cost function C(x). I'm getting 9x-(1/(x^2 - 1))+1181.9 but i guess its wrong

    asked by Kyle on November 3, 2013
  61. Engines

    How do i find total displacement in in^3/min if i have the bore and stroke and and rpm and number of cylinder. i can calculate piston and engine displacement and compression ratios but just not sure about TOTAL displacement and the rpms?

    asked by Matt on September 27, 2006
  62. Physics

    Which of the following forces does NOT have a zero work done on the object: a)The normal force on a box that slides across a horizontal level floor. b)The weight on a box that slides across a horizontal level floor. c)The normal force on a box that slides

    asked by Nikita on November 11, 2009
  63. math, economics

    Consider a market in which consumption of the good being traded generates a positive externality. There are 100 identical consumers, each with a utility function given by 1/2√q+m+√G, where G denotes the total level of consumption in the market. The

    asked by Nick on March 24, 2014
  64. Physics

    A rope is tied to a box and used to pull the box 1.7 m along a horizontal floor. The rope makes an angle of 30∘ with the horizontal and has a tension of 5 N. The opposing friction force between the box and the floor is 1 N. Part A How much work does

    asked by Jamie on November 12, 2017
  65. STATISTICS

    Can someone please tell me how to solve this problem? A buyer for a lumber company must determine wheter to buy a piece of land containing 50,000 trees. if 2000 tress are at least 48 feet tall she will purchase the land; otherwise she will not. the owner

    asked by DEE-DEE on April 21, 2007
  66. Physics

    NASA wants to build a centrifuge to train its astronauts to handle the strong accelerations they will experience when the space shuttle lifts off. A composite material capable of withstanding a normal force of 120000N without rupturing is used to

    asked by Kid on April 28, 2016
  67. Physics

    Block A has a mass of 20kg and is placed on top of cart B which has a mass of 100 kg. Blosk A has a pulley attatched to it with a force of P acting towards the right. Cart B is on rollers. The coefficient of kinetic and static friction are both the same

    asked by Jessi on October 23, 2009
  68. Economics

    The handmade snuffbox industry is composed of 100 identical firms, each having short – run total costs given by STC = 0.5q2 + 10q + 5 and short – run marginal costs by SMC = q + 10 where q is the output of snuffboxes per day. a) What is the short

    asked by Pravinesh on November 2, 2011
  69. math

    Robert's acct p $98.50 has been delinquent for three months. Office procedures charge a 2% service charge after 90 days componded monthly and is added to future bills. What will be the amount owed after nine months? I did $98.50 x 2% = $1.97 $1.97 x

    asked by LASTDAYS on May 13, 2010
  70. Physics

    highway saftey engineers build soft barriers so that cars hittingthem will slow down at a safe rate. a person wearing a saftey belt can withstand an acceleration of 300 m/s how thick should barriers be to safely stop a car that hits a barrier at 110 km/h

    asked by Madi on September 9, 2010
  71. physics

    A small motor draws a current of 1.76 A from a 110 V line. The output power of the motor is 0.20 hp. (a) At a rate of $0.060/kWh, what is the cost, in cents, of operating the motor for 4.0 h? (b) What is the efficiency of the motor? for (a) i am doing

    asked by julie on March 14, 2011
  72. Chemistry

    Hello, i seem to be stuck on a problem and do'nt know why im not gettin the right answer.I have the he Ka and Kb values for each of the weak acids and bases from the chart and I keep getting zero and the second one 2.27*10^-24 is this correct?? Thank uu

    asked by Amy Wight on March 25, 2011
  73. Chemistry

    Hello, i seem to be stuck on a problem and do'nt know why im not gettin the right answer.I have the he Ka and Kb values for each of the weak acids and bases from the chart and I keep getting zero and the second one 2.27*10^-24 is this correct?? Thank uu

    asked by Amy Wight on March 25, 2011
  74. Chemistry

    Hello, i seem to be stuck on a problem and do'nt know why im not gettin the right answer.I have the he Ka and Kb values for each of the weak acids and bases from the chart and I keep getting zero and the second one 2.27*10^-24 is this correct?? Thank uu

    asked by Amy Wight on March 25, 2011
  75. math

    The runway of an airfield faces west. An airplane, flying in the direction of north-east at a height of 2km and at a speed of 400km/h, on a path which passes over a point 3km west of the runway end, is spotted sqrt(29)km horizontally(south-western

    asked by Jainee on November 20, 2011
  76. Math

    A rectangle prism is 8 cm long. a)How many 2 x 2 x 2 cm cubes can the prim be cut into? b)What is the total surface area of all the 2 x 2 x 2 cm cubes? c) What is the total volume of all the 2 x 2 x 2 cubes?

    asked by Anonymous on January 15, 2016
  77. Math

    About what percent of the total population believed saying 136,800,000 to be true? Total Populaton:250,000,000

    asked by Dwayne on September 6, 2011
  78. biology - glycolysis +atp (help)

    9. The total amount of energy released from the chemical bonds of glucose is 2870 kJ/mol, after the initial investment of 2 ATP. The total energy that can be harvested to form ATP molecules is about 1200 kJ/mol. a. After the initial investment of 2 ATP, 38

    asked by Farah on March 2, 2011
  79. physics

    a particle moving on a circlehas a velocity of m/s and normal acceleration of 10m/s2.determine the radius of the circle.

    asked by tarun on September 7, 2017
  80. math

    Determine the area between the z-scores in each pair for a normal distribution. Round your answers to 4 decimal places. (a) 1.12 and 1.98 (b) –2.12 and –1.0

    asked by jason on March 29, 2010
  81. Math

    For a Normal distribution with mean, mu=2, and standard deviation, sigma = 4, 70% of all observations have values between x and y . (Round to 4 decimal places.)

    asked by Jackie on April 15, 2013
  82. science

    the normal boiling point of liquid oxygen is -182•97°c what is the temperature on the Kelvin and Fahrenheit scales?

    asked by saeed on January 25, 2016
  83. 4th grade

    my teacher gave me this question I don't get it. If a normal person blinks 25 times per minute how old would you be your next birthday?

    asked by Anonymous on December 6, 2010
  84. stat

    if the heights of men follow a normal distribution, and 99.7% fall between 5" and 7" what is the estimate standard deviation of the height?

    asked by lena on February 3, 2013
  85. College Chem

    How many calories of energy are needed to vaporize a 20.2 g sample of liquid ethanol at its normal boiling point of 78 oC?

    asked by Sam on October 24, 2010
  86. chemistry

    What quantity of heat would be evolved if 1.00g of sodium vapor condensed at its normal boiling point?

    asked by Louise on April 15, 2012
  87. phy113

    The normal boiling point of liquid oxygen is -182.97¡èC, what is this temperature on the kelvin and fahrenheit scale?

    asked by samstix on August 4, 2014
  88. Physics

    a 10-kg bos slides down a frictionless ramp with acceleration 3.6 m/s calculate the weight....the angle and normal force

    asked by Bolo on October 8, 2010
  89. Math

    Find the area under the standard normal curve between z = 0.7 and z = 2.15, P(0.7 < z < 2.15). (Give your answer correct to four decimal places.)

    asked by Tom on May 29, 2013
  90. Physics

    a 10-kg bos slides down a frictionless ramp with acceleration 3.6 m/s calculate the weight....the angle and normal force

    asked by Bolo on October 8, 2010
  91. chemistry

    A normal salt is formed when all the hydrogen atoms in acid have been replaced by a metal.Give equation

    asked by jack on September 7, 2015
  92. Math

    Find the area under the standard normal curve between -1.32 and the mean, P(-1.32 < z < 0.00). (Give your answer correct to four decimal places.)

    asked by Ayden on May 29, 2013
  93. Physics

    a 10-kg bos slides down a frictionless ramp with acceleration 3.6 m/s calculate the weight....the angle and normal force

    asked by Bolo on October 8, 2010
  94. Statistics

    True or False In order for the distribution of sample means to be normal, it must be based on samples of at least n = 30 scores.

    asked by Lyndyc on December 12, 2013
  95. statistics

    How do I go about finding the answer to this type of question? Find the standard score (z) for which 50% of the area under the normal curve is below the mean.

    asked by MissPatte on September 5, 2014
  96. math

    A season of football scores falls in a normal distribution with a mean of 35 and standard deviation of 6. What is the probability that a score was between 29 and 41?

    asked by arron on June 5, 2012
  97. English

    I know this sounds dumb, but what do you call people who are rich but they act normal, don't try to show off at all, and is very kind.

    asked by Jessica on November 11, 2014
  98. math

    how do i do this. find the equation for the lines that are tangent and normal to the curve y= (square root of 2)(cosx)at the point (pi/4, 1)

    asked by eleanor on October 15, 2009
  99. chemistry

    CHCl3 has normal boiling point at 61C and enthalpy of vaporization of 29.24kJ/mol. what are its value of G and S vapor

    asked by Anonymous on May 6, 2012
  100. disease

    Contrast normal with abnormal structure and function of affected parts of the body from Trichomoniasis. Can you please help with this or help me to understandimg what it is that they are asking me?

    asked by Meia C. on February 22, 2009