Questions Asked on
March 6, 2018

  1. Precalculus

    Which of the following are trigonometric identities? Select all that apply (there are 3 answers). A cos^2(theta)=sin^2(theta)-1 B sin(theta)=1/csc(theta) C sec(theta)=1/cot(theta) D cot(theta)=cos/sin(theta) E 1+cot^2(theta)=csc^2(theta)

    asked by Statten
  2. Math

    How to convert y^2-8x-16=0 to polar form

    asked by Tony
  3. chem

    A hot air balloon is filled with 1.51 × 106 L of an ideal gas on a cool morning (11 °C). The air is heated to 103 °C. What is the volume of the air in the balloon after it is heated? Assume that none of the gas escapes from the balloon.

    asked by Rachel

    1. Short-term effects of smoking include (select all that apply) A. bad breath ** B. yellow teeth ** C. feeling tired D. cancer 2. Oxygen enters the blood in the A. bronchi B. pharynx C. larynx D. alveoli ** 3. A respiratory disorder in which the bronchi

    asked by Kylani
  5. Geometry

    1. The Seattle Space Needle is 604 feet tall. A model for the building is 48 inches tall. What is the ratio of the height of the model to the height of the actual Space Needle? A. 151:1 B. 151:12 C. 1:151 D. 12:151 If anyone knows the rest of the answers

    asked by :P
  6. geometry

    What is the ratio for the surface areas of the cones shown below, given that they are similar and that the ratio of their radii and altitudes is 4:3?

    asked by joel
  7. math

    What are two decimals whose product is close to 10?

    asked by Ashley
  8. Science

    If an organism is heterozygous for a particular trait, the organism. A.has the same allele on both chromosomes in a chromosome pair. B.has different alleles on the chromosomes in a chromosome pair.* missing alleles on the chromosomes in a chromosome

    asked by davonte
  9. Math

    Suki is trying to solve the equation 62.75 + x = 92. Determine whether Suki could use each statement below to reason and solve the equattion a. Suki can add 62.75 to both sides of the equation. b. Suki asks,"What number can be added to 62.75 to 92?" c.

    asked by Ethan Camp
  10. math

    find the measure of x in the triangle. show all your work. it is a 65 by 65

    asked by big red
  11. Advanced Algebra

    Kendra’s income put her in the top tax bracket (35%) last year. During the same year, she earned $760 in dividends and $490 in coupons on a corporate bond. Three years ago, she purchased a common stock for $835. She sold the same stock last year for

    asked by Steve
  12. Math

    David and Ted are walking a trail. Ted walks 3.1 kilometers farther than David. Part a. Write an equation for the number of kilometers David walks, d, if Ted walks 5.4 kilometers Part b. Write an equation for the number of kilometers that Ted walks, t, if

    asked by Joey is nutellabread476
  13. precalc

    prove the identity : cos3x =4 cos^3x-3cosx

    asked by Anonymous
  14. English

    Select the letter of the pair of words that expresses a relationship most like the relationship expressed by the following pair: 1. oneness: unity a. workout : perspire b. day : hour c. premiere : debut d. gardening : trowel e. ring : wedding (E) 2.

    asked by Lemus7
  15. Math

    Samantha works part time at a store where she earns $462.30 each month. Write an expression that can be used to find the amount Samantha earns working any number of months, m.

    asked by 6up
  16. algebra 2

    The graph of f(x)= (x^2-2x-8)/(x+6) has which of the following? a. point discontinuity b. vertical asymptote c. both of the above d. neither of the above I'm stuck between b and c. I know that the vertical asymptote is x=-6. Help?

    asked by huncho jack
  17. GEOMETRY helpppp

    In a circle with a radius of 6 m, an arc is intercepted by a central angle of 7π/4 radians. What is the arc length? Use 3.14 for π .

    asked by Uliseeu
  18. Science

    1. A body is moving along a circular path of radius R. What will be the distance covered and the displacement of the body after half a revolution? 2. A person starts from his house and travels a circular distance of 15 km around the walled city before

    asked by Deepak
  19. Business Management

    1. A lower value of the U.S. dollar means that A. the American dollar is worth more when purchasing a foreign-made good. B. a dollar would be traded for less foreign currency than normal. C. the American dollar isn’t backed by gold. D. the dollar can’t

    asked by Alexa
  20. Math

    The graph represents the height y, in feet, above the ground of a golf ball x seconds after it is hit. The maximum height of the golf ball occurs at x = 2. For up to 2.5 s after the ball is hit, its height is increasing. The maximum height of the golf ball

    asked by crambles
  21. algebra

    Write a compound inequality that represents the following phrase. Graph the solutions. all real numbers that are between negative 7 and 4

    asked by cole
  22. Circuits2

    Three impedances zL=3+j4 ohms, zC=4-j4 ohms and zR=0+j3 ohms are connected in parallel. solve for the power factor of the combination.

    asked by Student
  23. physics

    23.1 .. A point charge q 1 = +2.40 mC is held stationary at the origin. A second point charge q 2 = -4.30 mC moves from the point x = 0.150 m, y = 0 to the point x = 0.250 m, y = 0.250 m. How much work is done by the electric force on q 2 ?

    asked by gopi
  24. Math

    There is a shelf in the library for the books by authors with the last names of Amster, Anderson, Axelson, Bannister, Baxter, and Bayer. The following table shows the number of books that the library has by these authors and how many of those books are

    asked by Jay
  25. 5th grade Math

    When finding the mass of an object, you determine which of the following? a. quantity of matter in the object b. its weight c. its height d. its length I picked A, but it was marked wrong. So, I guess the more correct answer is B?

    asked by Jared
  26. Math

    Radio signals travel at a rate of 3x10^8 meters per second period how many seconds will it take for a radio signal to travel satellite to the surface of earth if the satellite is orbiting at a height of 4.2x10^7 meters? (Hint: Time is distance divided by

    asked by Valhalla
  27. Math

    Lance wants to find the total length of three boards he use the special 3 1/2 + 2 + 4 1/2 how can Lance rewrite the expression using both the associative and commutative properties of addition

    asked by Kenzie
  28. Chemistry stoichionetry

    the average human requires 120.0 grams of glucose (C6H12O6) per day. How many grams of CO2 (in the cellular reapiration reaction) are produced from this amount of glucose? the balanced cellular respiration reaction is: C6H12O6 + 6 O2 = 6 CO2 + 6 H2O

    asked by Kade
  29. Chemistry

    Given the following information determine the reaction Gibbs energy for the formation of silicon dioxide at 298 K Si(s)+O2(g) →SiO2(s) ΔfH°(Si(s))=0 kJ mol-1, S°(Si(s))=18.8 J mol-1 K-1 ΔfH°(O2(g))=0 kJ mol-1, S°(O2(g))=205.0 J mol-1 K-1

    asked by Aine
  30. Chemistry

    Suppose that a device is using a 5.00-mg sample of silicon that is doped with 1 × 10-5% (by mass) phosphorus. How many phosphorus atoms are in the sample?

    asked by Angel
  31. Math

    A person wishes to invest R120 000 in three types of bonds:  municipal bonds (MF) paying 6% p.a.,  bank investment certificates (BF) paying 7% p.a. and  high-risk bonds (HF) paying on average 10% p.a. For tax purposes, the person wants the amount

    asked by Tshegofatso
  32. MATH

    A. triangle ABC is reflected over the y- axis. What are the coordinates of the reflected triangle? B. Describe in words what happens to the x- coordinates and y- coordinates of the original triangle's vertices as a result of this reflection.

    asked by annonymus
  33. Trigonometry

    An airplane is traveling at 650 mph on a heading of 255°. The wind is blowing from a bearing of 320° at 28 mph. What is the ground speed and the actual bearing of the airplane? P.S. I prefer the law of cosine/sine method

    asked by John
  34. AP Physics

    What is the potential energy of an electron and proton in a hydrogen atom if the distance between them is 5.3*10^-11? ANSWER k=9*10^9 Q=1.6*10^-19 q=1.6*10^19 Ue=? Ue=KQq/r Ue=-4.4*10^-18 j

    asked by SK
  35. language arts

    in the poem “cynthia in the snow” by gwendolyn brooks. what does the word “whirs” mean in line 7. a. short turning b. slow swish c. long creak d. fast alarm

    asked by Alba
  36. chem

    Consider the reaction when aqueous solutions of sodium nitrate and ammonium sulfide are combined. net ionic equation?

    asked by Leo
  37. Chem

    A sample of an ideal gas has a volume of 3.20 L at 14.80 °C and 1.50 atm. What is the volume of the gas at 21.80 °C and 0.989 atm?

    asked by Rachel
  38. Maths

    What is the product of 2.5 × 10−15 and 3.9 × 1026? 6.4 × 10^1 9.75 × 10^11

    asked by Diana
  39. physics

    The illustration for this problem can be seen at screenshots(dot)firefox(dot)com/atwXACAA9akaoAji/null The army is testing out a new prototype artillery cannon with an uncommonly high muzzle velocity of 1000 m/sec . The design bugs haven't been fully

    asked by unowen
  40. English

    1. Select the letter of the choice that best completes the meaning of the following sentence: In the early 1900s, Americans who _____ reform and _____ new laws were called progressives. a. denounced...espoused b. advocated...hindered c.

    asked by nolasx
  41. maths

    The speed of light is about 2.99x10^8 m/s. If a rocket travels at one-fifth the speed of light, find its speed in km/h (in scientific notation correct to 2 significant figures)

    asked by Jake
  42. Maths Algebra Application Practice

    In a TV trivia show, a contestant receives 500 points for a correct answer and loses 200 points for an incorrect answer. Let c represent the number of correct answers and i represent the number of incorrect answers. What is the expression for the

    asked by Liew
  43. Trigonometry

    An airplane with a speed of 485 km/h is traveling with a heading of 83.5°. The wind velocity is 38 km/h in the direction of 191°. Find the ground speed of the airplane. P.S. How do you solve this problem by only using the law of cosine/sine method?

    asked by John
  44. Calculus

    The Department of Agriculture is monitoring the spread of mice by placing 100 mice at the start of the project. The population, P, of the rats is expected to grow according to the differential equation dP/dt equals the product of 0.04 times P and the

    asked by Anonymous
  45. Geometry

    A model is made of a car. The care is 5 feet long and the model is 8 inches long. What is the ratio of the length of the car to the length of the model? 8:5 15:2 2:15 5:8 My answer is 2:15

    asked by Lost
  46. Chemistry

    How many grams of carbon dioxide gas are formed when 11.9g of liquid hexane (C6H14) is combusted?

    asked by Felyisha Urioste
  47. Math

    Please help me with this riddle please! Why is a party like pouring oil into a car?

    asked by Someone 1234
  48. English grammer

    Use the conjunctions as,for,since,while in the sentence 1.the sun was very was still summer. 2.she can find the way.she is so clever. 3.he began to get was getting dark 4.mona read a book.the baby slept.

    asked by Anonymous
  49. math

    Five more than 6 times a certain number is 29. Find the number.

    asked by inder
  50. Math

    "Point B (4,0) is rotated 45 degrees clockwise about the origin. Write the exact coordinates of B'."

    asked by Mikayla
  51. language arts

    how many syllables are in each line of the poem “silkweed” by philip henry savage? a. 4 b. 6 c. 8 d. 10

    asked by Mario
  52. Trig

    the graph of an inverse trigonometric function passes through the point (1,pi/2). which of the following could be the equation of the function Y=Cos^-1 x Y=cot^-1 x Y=Sin^-1 x Y=Tan^-1 x

    asked by Danny
  53. science

    What is equinox?

    asked by sarojee
  54. language arts

    which of these sentences shows the following meaning of the word content: appease or gratify? a. i think the content of that poem was depressing. b. the grade on his test made chang feel content with his effort. c. computers are able to score essays for

    asked by Santos
  55. Chemistry

    An apple pie needs 10 large apples, 2 crusts (top and bottom), and 1 tablespoon of cinnamon. write a balanced equation that fits this situation. How many apples are needed to make 25 pies?

    asked by Lexi
  56. Math

    In the center of the library is a fountain that holds 500 gallons of water. For every 25 gallons of water they must add 1/4 cup of water treatment. How many cups of water treatment must they add to the fountain to treat the 500 gallons of water?

    asked by Joey
  57. Advanced Algebra

    What is the rate of return on a $10,000 bond purchased at $8,750 with a 10% coupon? The 10% coupon guarantees a return of $1,000 on the nominal value of the bond, which is $10,000. The bond's actual sale price was $8,750, so the $1,000 coupon must be

    asked by Steve
  58. chemistry

    To what a temperature must be given mass of oxygen at 0degree celcius be heated so that both its volume and pressure will be doubted?

    asked by joy chiamaka
  59. Social studies

    Explain the similarities and differences between corporate farms and mixed-crop farms? PLEASE HELP ME THIS IS THE ONLY QUESTION IM HAVING TROUBLE WITH THIS IS ALL I NEED

    asked by Dagoods
  60. English

    1. Select the letter of the underlined sentence part that contains an error in grammar or usage. If the sentence contains no error, select (E). The Endangered Species Act that was passed in 1966, made it illegal (A) (B) for people to kill, either for

    asked by cristal
  61. MATH!!! URGENT!!!!

    The probability of making a 6 ft putt is 60%. How many times should you except to make it if you putt the following number of times. 5 times 10 times 30 times 160 times

    asked by Reghan
  62. math

    The square root of 76 is between what two numbers?

    asked by anon
  63. math

    I'm still working on my car project and wondering if you could check this- this question says: If x represents the number of months and P represents the total paid for the car, write a formula that describes the total amount you have spent on the down

    asked by carly
  64. Chemistry

    When one mole of CH3OH (l) forms from its elements at 1 atm and 25 degrees C, 238.6 kJ of heat are released, and 35.2 kJ are released when one mole of the gas condenses. How much heat is released when one mole of CH3OH (g) forms from its elements at these

    asked by Alice
  65. maths literacy

    think of a number ,add4 multiply by 7and subtract 10

    asked by Nthabiseng
  66. Math urgent

    I'm having trouble with my practice in connexus, can someone review with me how to find the value of x in a polygon. If I don't respond right away give me a one minute I have crappy wifi XD

    asked by DA_COOL_DUDE
  67. maths prove help asap

    plz help 1.for any 2 non-zero integers x and y there exist a unique integer q and r called the quotient and remainder respectively such that x=yq+r where

    asked by mat
  68. ELA

    Which word in the sentence is an adjective The chicks scurried across the grassy field. A: chicks B: scurried C: across D: grassy

    asked by Aye
  69. Math

    Identify all the sets to which the number 0.46517 Repeating belongs. A. rational number B. irrational number*** C. integer, rational number D. whole number, integer, rational number Pls Help me.Thx

    asked by Tech_Nic

    In a circle with a radius of 6 m, an arc is intercepted by a central angle of 7π/4 radians. What is the arc length? Use 3.14 for π .

    asked by Uliseeu
  71. math

    5(x + 10) + x a. 6x +15 b. 5x + 15 c. 6x + 50 d. 4x - 50 whats the answer im rlly confused

    asked by kiara
  72. Ela

    Which word in the sentence is an adverb Three slimy snails crept nearby A: three B: nearby C:slimy D: crept~ I choose this one

    asked by Aye
  73. Math

    Needing some help with how to set up the problem please. Thank you. Rashida has 3 blouses: red, white, and pink. She has 2 skirts: blue and black. She has 2 pairs of shoes: red and white. What is the probability that Rashida selects an outfit at random

    asked by Steve
  74. math


    asked by jake
  75. Algebra

    3p+3=2p+4.5 bar models I just need help understanding how to do it.

    asked by Emily
  76. math

    You work in a local department store that is having an annual 'White Sale' with 1 4 off all sheets and towels. What is this price reduction as a percent?

    asked by dysha
  77. Maths

    This is more of a question of instructions than it is solving. On my page, it has a semicolon and a number behind the question. For example, 1 is x+24= 36;x=_____ I don't see how the semicolon or number and variable are needed in this equation. Please help

    asked by Maya
  78. Math

    I'm stumped on this problem. My math teacher stated to write multiplication tables from 1 to 6 and then solve. I'm not even sure where to start after I finished writing the tables. At the same time, Marisol rolls 2 number cubes that each have sides labeled

    asked by Lisa
  79. Math

    At a store, 7 cartons of whole milk cost $10.50 and 5 cartons of fat-free milk cost $5.00. How much would it cost to buy 3 cartons of whole milk and 2 cartons of fat-free milk?

    asked by The Devil Cat
  80. Social Studies Study Guide

    Please check my son's answers. I don't want him to memorize wrong information. Stars by his answers. Thank you for being here! 1. NAFTA is a trade agreement between the United States, China, and India. **the United States, Japan, and Mexico. the United

    asked by Mama Teacher
  81. Math

    sam decides to build a square garden if the area of the other garden is 9x^2 -24x +16 square feet what is the length of one side of the garden

    asked by Helpmelol
  82. American Government Please Check

    1. In relation to the balance of power, why is the evolution of the position of majority leader necessary? Select all that apply. (2 answers) a. because the power established by the Constitution of the president of the Senate does not establish a strong

    asked by dilly dally
  83. Chemistry

    'Describe the difference in intermolecular forces between 2-methyl-3-hexanone and 5-methyl-3-hexanol and how this affects the properties of the substances.' I'm looking at the molecles on Chemspider, and I want to say that because 5-methyl-3-hexanol has a

    asked by SarahF275
  84. English

    1. The best way to improve listening comprehension is to a. take informal notes on what you hear. b. use complete sentences to take detailed notes of both main ideas and details. c. concentrate on listening to the speaker's transitions. (C) 2. Critical

    asked by Jacob
  85. Science

    I am doing a project right now and I'm kind of confused. I did an experiment and this is a question asked "Scientists changed the independent variable to learn about the Mpemba Effect. What did you learn from your results? Do you agree that the Mpemba

    asked by Anonymous
  86. Math

    We have the survey data on the body mass index (BMI) of 648 young women. The mean BMI in the sample was x¯=27.2. We treated these data as an SRS from a Normally distributed population with standard deviation σ= 7.4. Find the margins of error for 90%

    asked by Mike
  87. chemistry

    how many grams of chlorine are in 2.01 grams of TiCl4?

    asked by Anna
  88. Pre-Algebra

    Find the volume of the rectangular prism? A-23in3 B-297in3 C-318in3 D-159in3 Find the volume of the triangular prism? A-23in3 B-297in3 C-318in3 D-159in3 Find the volume cylinder. A-16,990mm3 B-8,491mm3 C-4,247 D-2,369mm3 Find the volume of a cylinder with

    asked by Octavia
  89. English

    Read the following paragraph: The election of Danielle Meyer as senior class president has been a mixed blessing. While it's true that she has tried to keep open a dialogue between students and the school administration, she has been largely ineffective in

    asked by leslie_55
  90. chemistry

    You fill a balloon with 0.76mol of He gas at a temperature of 20 C. What is the pressure, in atm, exerted by the He molecules? Is this pv=nrt? and if yes is it 5.2?

    asked by Cody
  91. English

    Select the letter of the better thesis statement for the following essay topic: 1. Describe the domestic role of Saudi Arabia's government. a. In the 1980s rumors circulated that the Saudi government was developing its own arms industry. b. The main goal

    asked by leslie_55
  92. random

    How do you pronounce jiskha?

    asked by huncho jack
  93. MATH

    The graph of a trigonometric function oscillates between y=1 and y=-7. It reaches its maximum at x= pi and its minimum at x=3pi. which of the following could be the equation of the function? A) f(x)=4 cos x/2-3 B) f(x)=4 sin x/2-3 C) f(x)=4 sin 2x-3 D)

    asked by Benji
  94. Discrete Mathematics

    Prove (A1 + A2 +...+ An)^T = A1^T + A2^T +...+ An^T using Mathimatical Induction.

    asked by David
  95. Maths

    Ifsin=12/13,find the value of sin²_cos²/2sin2cosx1/tan²

    asked by Sravya
  96. Math

    A skier is trying to decide whether or not to buy a season ski pass. A daily pass costs ​$79. A season ski pass costs ​$400. The skier would have to rent skis with either pass for ​$20 per day. How many days would the skier have to go skiing in order

    asked by Jeff
  97. english essay

    essay on taking risks with examples containing Edward Jenner and Mother Teresa (need a thesis, intro, and conclusion, already got body paragraphs)

    asked by Molly
  98. Physics

    A basketball player makes a jump shot. The 0.650-kg ball is released at a height of 1.80 m above the floor with a speed of 7.80 m/s. The ball goes through the net 3.10 m above the floor at a speed of 4.40 m/s. What is the work done on the ball by air

    asked by A
  99. chemistry

    Please balance magnesium sulfate and iron III acetate

    asked by D
  100. math

    Find two numbers x, and y that add to 30, and for which 2x^2 +5y^2 is a minimum.

    asked by George
  101. tax

    A dependent filing as single in 2017 has an income filing requirement of the greater of $1,050 or earned income plus

    asked by hale
  102. Chem

    A balloon is inflated to a volume of 7.0 L on a day when the atmospheric pressure is 765 mmHg. The next day, as a storm front arrives, the atmospheric pressure drops to 725 mmHg. Assuming the temperature remains constant, what is the new volume of the

    asked by Rachel
  103. Advanced Algebra

    I bought 200 shares of stock in June of 1999 for $8,562.00 and sold them in June of 2009 for $11,582.00. What is my rate of return? My answer is 35.27%

    asked by Steve
  104. Math

    The triangle inequality theorem states that the sum of the lengths of any two sides of a triangle is greater than the length of the third side. The lengths of two sides of a triangle are 15 ft and 27 ft. Find the possible lengths of the third side. The

    asked by John
  105. Probability

    The first card Jon draws from a standard deck is a face card (jack, queen, or king). He keeps this card and draws a second one. If he draws at random, what is the probability that Jon now has a pair of kings? Answer as a reduced fraction.

    asked by PT
  106. science

    How can we remove temporary as well as permanent hardness of water by permutit process?

    asked by sarojee
  107. Algebra

    An 11 foot ladder needs to be positioned so that the top of the ladder is 10 feet above the base of the outside wall of the house. How far should the bottom of the ladder be placed from the base of the wall?

    asked by Bob Ross
  108. Math

    In the Greenwich Public Library, about one-tenth of the books are overdue when they are returned. An average of 580 books are returned to the library each day. About how many books could be expected to be returned on time each day?

    asked by Xavier
  109. Math

    Matter is in a liquid state when its temperature is between its melting point and its boiling point. Suppose that some substance has a melting point of negative 46.81 degrees and a boiling point of 357.63 degrees . What is the range of temperatures in

    asked by Robert
  110. Texas history

    Texas history In the 1920s oil joint which other two industries as the most important in Texas a cattle in lumber be caught turn and Caddo see current in manufacturing and he lumber in manufacturing

    asked by Elyan
  111. exponential functions help please

    hi i am stuck on this can someone please help me through it. Thanks. does the table represent an exponential function? X/1/2/3/4 Y/4/8/12/16 ikd?

    asked by -blank-
  112. Math

    Please help IF I am right or not Which of the following correctly simplifies the expression 3 to the power of 2 multiplied by 5 to the power of 0 whole over 4, the whole squared.? 3 to the power of 2 multiplied by 1 whole over 4, the whole squared. = 3 to

    asked by Diana
  113. Math

    In a class of 20 students, 40% are boys. Twenty-five percent of the boys and 50% of the girls wear glasses. How many students wear glasses?

    asked by Jonathan
  114. technology

    what is the multiple source test

    asked by cda
  115. chemistry

    To what temperature must a given mass of oxygen at 0degree celcius be heated so that both its volume and pressure will be doubted?

    asked by joy chiamaka