Most popular questions and responses by math
  1. Math

    1. Use 3.14 for pie to estimate the area of a circle. The diameter is given. Round your answer to the nearest hundredth if necessary. (the diameter is 16.8) 2. Find the missing length. Round to the nearest tenth, if necessary. (7,19)

    asked on May 8, 2017
  2. math

    can someone help me with Lesson 9: Integers and Algebraic Expressions Unit Test for connection academy help plz

    asked on September 20, 2018
  3. math

    A circular track is 1000 yards in circumference. Cyclists A, B, and C start at the same place and time, and race around the track at the following rates per minute: A at 700 yards, B at 800 yards, and C at 900 yards. What is the least number of minutes it

    asked on August 20, 2014
  4. math

    line y=3x-1 is transformed by a dilation with a scale factor of 2 and centered at (3,8). The line's image is Line MN is dilated by a scale factor of 2 centered at the point (0,6). If MN is represented by y=-3x+6, The line's image is

    asked on January 9, 2019
  5. Math

    Julie is digging a square area in her backyard for a vegetable garden. If the area is 52 square feet, what is the approximate length of one side of her garden? 6 square feet 7 square feet 8 square feet 9 square feet 7 square feet is my answer, what's

    asked on October 22, 2012
  6. Math

    Assume a box contains three red jelly beans and two green ones. We consider the event that a red bean is drawn. Suppose I pick a jelly bean from the box without looking. I record the color but do not put the bean back in the box. Then I choose a bean

    asked on June 28, 2015
  7. Math

    On Halloween, a man presents a child with a bowl containing six different pieces of candy and six different pieces of gum. He tells her that she may have four of each. How many choices does she have? Answer as a whole number.

    asked on June 28, 2015
  8. mathematics

    a1=1 ,an=3an-1+2 for n>2

    asked on July 17, 2016

    Bruce bought four packages of cornbread mix that each weighs x pounds. He also bought a package of biscuit mix that weighs pounds more than one package of cornbread mix. If the total weight of the items that Bruce bought is 31 pounds, what is the weight,

    asked on November 8, 2017
  10. Algebra 1

    Suppose y varies directly with x, and y=25 when x=-140. What is the value of y when x=36 A)140 B)165 C)201.6***** D)176

    asked on December 6, 2016
  11. Geometry

    In a triangle, segments AB and AC are trisected, and D is the midpoint of BC. If the area of Triangle ABC is 630 cm^2, then the area of the section marked x, in cm^2, is?

    asked on October 17, 2018
  12. Math

    Use equal intervals to make a frequency table for the average number of movies per person. You do not need to show tally marks. Country Average Number of Movies Turkey 0.5 Japan 1.2 UK 1.3 Finland 1.3 Austria 1.5 Germany 1.8 Spain 2.2 Sweden 2.2 Denmark

    asked on March 12, 2016
  13. Algebra

    Use the figure to answer questions 1-3 file:///C:/Users/Student/Downloads/642756-212012-25329-PM-1227809791%20(1).png 1. Name a pair of complementary angles. ∠1 and ∠4 ∠1 and ∠6 ∠3 and ∠4 ∠4 and ∠5 2. If m ∠1 = 53°, what is m ∠4? 53°

    asked on February 2, 2017
  14. Math

    Make a table and graph each quadratic function. Use integers from -3 to 3 for inputs. #4- y= -x2 #5- y=2x squared #6- y= -8x squared #7- y= x squared + 2 Make a table and a graph for each function. Use only positive values for x. #10- y= 10/x #11- y= 8/x

    asked on May 11, 2016
  15. Calculus

    A rectangular garden of area 75 sq ft is to be surrounded on 3 sides by a brick wall costing $12 per foot and on one side by a fence costing $7 per foot. Find the dimensions of the garden that the cost of the materials is minimized Read more: A rectangular

    asked on February 21, 2012
  16. Math

    Signals The king has 10 (different) colored flags that he uses to send coded messages to his general in the field. For example, red-blue-green might mean “attack at dawn” and blue-green-red may mean “retreat.” He sends the message by arranging

    asked on June 28, 2015
  17. Math

    write a function rule for the area of a rectangle or picture frame that has a width of 22 in less than its length use the function rule to find the area of the picture frame the length is 39 inches

    asked on March 7, 2017
  18. Math

    The average depth of the water at the end of the dock is 6 feet. High tide occurs at 6 am and low tide occurs at 6 pm. The depth of the water at high tide is 9 feet. The information can be graphed using a sinusoidal function. Your boat needs at least 4.5

    asked on May 1, 2018
  19. jay

    The formula for the perimeter of a rectangle is P=2(l+w)P=2(l+w). Solve for w. w=2P−lw=2P−l w=p2−lw=p2−l w=p−l2w=p−l2 w=P2+l D?

    asked on September 21, 2016
  20. Math

    A park is 300 yds by 500 yds. There is a 4 wide foot walking path going around the entire perimeter of the park. The rest of the park is green space. How much green space is there in the park?

    asked on March 27, 2019
  21. Math

    A user is charged php300 monthly for a particular mobile plan, which includes 100 free text messages. Messages in excess of 100 are charged php1 each. Represent the amount as a function of the number of messages m sent in a month.expressed by the piecewise

    asked on June 10, 2018
  22. pre-calc

    The radius of the earth is approximately 4,000 miles. The acceleration due to gravity is approximately 32 feet per square second. The mass of the earth is approximately 6 × 10^24 kilograms. Calculate the value of G in units of kilograms, meters, and

    asked on September 30, 2016
  23. Math

    The volume of seed in a bird feeder is represented by the equation V = 12(24-h) Q: Make a table of ordered pairs (h,V)

    asked on February 8, 2017
  24. Math

    Kevin moved from a city to a small town. The population of the city was 6 x 10^5, which is about 15 times a great as the small town. Write an expression in scientific notation that represents the population of the small town. I got 4 x 10^4? Please explain

    asked on January 9, 2018
  25. Finance

    Assume that you have a balance of $5000 on your Visa credit card and that you make no more charges. If your APR is 22% and each month you make only the minimum payment of 3% of your balance, then find a formula for the balance after t monthly payments. A.

    asked on June 28, 2015
  26. math

    what is a word problem for 2x-4=8?

    asked on September 28, 2010
  27. math

    an airline flies two different planes over the same route. THe faster of the two plans travels at 540 miles per hour, and the toher plane tralves at 450 miles per hour. How many more can the faster plane travel in 12 seconds than the slower plane? (Im

    asked on July 17, 2019
  28. Math

    The point c(3, -1) is translated left 4 units up and 1unit. . write the rule for this translation . what are the coordinates of the image point A. (x, y) --> (x+4, y+1);(7, -2) B. (x, y) --> (x- 4, y-1);(-1, 0) * C. (x, y) --> (x+4, y-1);(7, 0) D. (x, y)

    asked on March 21, 2019
  29. math

    find the exact value of the expression: 6tan^2(π/4)+18sec^2(π/4).

    asked on July 24, 2019
  30. Trigonometry

    Zidane and Shemique are looking up at their school from the playing field at the back of the school. From Zidanes point of view, the top of the school is at an angle of elevation of 43 degrees. From Shemique point of view, directly closer to the school it

    asked on May 23, 2019
  31. math

    some money is shared between Ali,Ben & Carl in the ratio 5:3:2.Ben receives $60.How much money is shared?

    asked on April 10, 2019
  32. math

    mikes truck engine holds 1 1/4 gallons of oil if there are 3 quarts of oil in the engine now how many more quarts of oil does mike need to add to fill the engine capacity? -(hint i gallon is 4 quarts)

    asked on January 12, 2018
  33. math

    Expand cos(50°) using a double angle identity

    asked on July 30, 2019
  34. math

    please simplify s^3/(6s^2 ) for me please urgent cant understand r give me the steps to simplify

    asked on March 23, 2019
  35. jay

    For a trapezoid, the following formula relates the area A, the two bases a and b, and the height h. A=(a+b)2hA=(a+b)2h Solve for a. a=2Ah+ba=2Ah+b a=2A−bha=2A−bh a=2Ah−ba=2Ah−b a=Ah2−b

    asked on September 21, 2016
  36. Math


    asked on July 18, 2019
  37. Math

    It costs $5 for 1 snow cone. Which function rule correctly relates the number of snow cones purchased, s to the total cost c. A. c=s+5 B. c=5s C. c=s÷5

    asked on May 16, 2019
  38. math

    The sum of 4 consecutive odd integers is -104. Find the integers with x for unknown numbers.

    asked on January 31, 2011
  39. Mathematics

    The length of a car park is 12m longer than its with. The area of the car park is 64m². Find the dimensions of the car park?

    asked on July 18, 2019
  40. Math

    Two business partners, Ellen and Bob, invested money in their business at a ratio of 6 to 7. Bob invested the greater amount. The total amount invested was $260. How much did each partner invest?

    asked on April 17, 2017
  41. Calculus

    Foggy optics, inc. makes laboratory microscopes. setting up each production run costs $2500. Insurance costs, based on the average number of microscopes in the warehouse, amount to $20 per microscope per year. storage costs, based on the maximum number of

    asked on February 23, 2012
  42. math

    a) 2 hours per day means? less than 2 hours If you were to choose more than 1 hour which of the three would you choose? can you please check the meanings and the question above^

    asked on August 2, 2019
  43. math

    The capacity of an elevator is either 15 children or 11 adults. If 8 children are currently in the elevator, how many adults can still get in?

    asked on December 6, 2007
  44. math

    Given the vector a= Find the unit vector in the same direction in component form

    asked on August 5, 2019
  45. Ana

    A group of hikers on a mountain began at an elevation of 3040 feet above sea level and stopped at elevation of 2319 feet above sea level. What was their change in elevation between these points? How can you tell from the change in elevation whether the

    asked on September 9, 2012
  46. geometry

    chung ho is standing on the top of a building that is 135m tall. The angle of depression to the top of the building next door is 71 degrees. The angle to the base of the building is 77 degrees. The buildings are 31m apart. How tall is the other building?

    asked on March 1, 2012
  47. math

    an airplane is flying at 550 km/h on a heading of 080. the wind is blowing at 60 km/h from a bearing of 120. Find the ground velocity of the airplane. Please Help! Thanks in advance.

    asked on May 24, 2011
  48. math

    Find the EXACT value of sin(2A) if cscA=5/4 Assume A is a Quadrant I angle in standard position. sin(2A)=

    asked on July 30, 2019
  49. Math


    asked on July 18, 2019
  50. math

    3x^2+3y^2-12x-30y+84=0 is the equation of a circle with center (h,k) and radius r For: h= k= and r=

    asked on August 12, 2019
  51. math

    Find the EXACT value of cos(2A) if angle A is arctan(12/5). cos(2A)=

    asked on July 30, 2019
  52. math

    Find all solutions of the equation sec^2x-2=0. The answer is A+Bkπ where is any integer and 0

    asked on July 24, 2019
  53. math

    Triangle abc is similar to triangle def, de=4, ab=x, ac=x+2, df= x+6 What does length ab equal?

    asked on December 14, 2018
  54. math

    Which answer best completes the following sentence? Two advantages of a confederation are that it ______ and ______. A: prevents abuse of power by a national government; preserves local identity B: concentrates power in state governments; makes national

    asked on June 4, 2018
  55. Aria

    If a projectile is shot vertically upward from the ground with an initial velocity of 100 ft per sec, neglecting air resistance, its height s (in feet) above the ground t seconds after projection is given by s= -16t^2 + 100t a) After how many seconds will

    asked on October 26, 2016
  56. math

    Find the EXACT value of sin(2A) if cscA=5/4 Assume A is a Quadrant I angle in standard position. sin(2A+=

    asked on July 30, 2019
  57. math

    1. A gallon of a certain kind of paint will cover 224 square feet of surface. In painting two walls; one 36’ by 8’ and the other 24’ by 9’, the number of gallons of paint used is: 2. Susan wants to use blue, yellow, green, and pink paint to

    asked on August 20, 2014
  58. math

    How many ways can 3 students be chosen from a class of 16 to represent their class at a banquet? 3,360 1,680 1,120 560 I think its 560.

    asked on March 5, 2019
  59. math

    if a and b are the roots of the equation x^2-3x+1=0, what is the value of (1/a) + (1/b)? If the function f is defined by f(x) = (x-1)^2 -3, where -1 is less than or equal to x and 3 is greater than or equal to x. Which of the following is the range of f?

    asked on July 22, 2019
  60. math

    Expand 3cos(12a) using a double angle identity in terms of sines.

    asked on July 30, 2019
  61. Sam E

    Let v(t)=t^2−3t be the velocity, in feet per second, of an object at time t , in seconds. (c) What is the meaning of the quantity v(4)? Select all that apply if more than one statement is correct. A. In how many seconds will the object have moved 4 ft.

    asked on January 28, 2016
  62. math

    a carton has a length of 2 and 1/6 feet, width of 1 and 1/5, and hight of 2 and 1/2 feet. what is the volume of the carton

    asked on August 16, 2019
  63. math

    Find the parametric equations of a circle centered at the origin with radius of 4 where you start at point (-4,0) at s=0 and you travel counterclockwise with a period of 2π.

    asked on August 12, 2019
  64. Arithmetic Progression

    In an AP the 6th term is half the 4th term and the 3rd term is 15. a. Find the fist term and the common difference. b. How many times are needed to give a sum that is less than 65?

    asked on September 17, 2012
  65. Airplane & Radar

    (Airplane & Radar) An airplane is flying (horizontally) at the height of 6 km on a flight path that will take it directly over a radar tracking station (on ground). If the distance D between the plane and the radar is decreasing at a rate of 300 km/hr,

    asked on December 15, 2011
  66. math help g

    Chris has a square garden with an area of 38.4m^2. He decreases the length of each side by 1.7m to make a smaller garden. What is the closet to the perimeter of the smaller garden?

    asked on December 9, 2017
  67. Math

    A manufacture of a certain commodity has estimated that her profit in thousands of dollars is given by the expression -6x^2+30x-10 where x (in thousands) is the number of units produced. What production range will enable the manufacturer to realize a

    asked on May 26, 2011
  68. algebra

    Find the standard equation of a parabola that has a vertical axis and satisfies the given conditions. x-intercepts −1 and 7 highest point has y-coordinate 4

    asked on September 28, 2019
  69. math

    it took 12 gallons of gas to fill the family car this is 5/6 the amount that the tank can hold how much gas can the tank hold? A.10 Gallons B.14 2/5 Gallons C.12 5/6 Gallons D.13 5/6 Gallons-My Answer Please check thanks:)

    asked on January 12, 2018
  70. math

    A college student receives an interest-free loan of $10,200 from a relative. The student will repay $200 per month until the loan is paid off. a) Express the amount P (in dollars) remaining to be paid in terms of time t (in months). (Give your answer in

    asked on September 28, 2019
  71. Math

    complex number L = 2 + bj Arg (L) = 5π/6 find all values of b? got 1/sqrt(3) but need it to be positive.

    asked on September 6, 2019
  72. kayla

    A sugar molecule has twice as many atoms of hydrogen as it does oxygen and one more atom of carbon that oxygen. If a sugar molecule has a total of 45 atoms, how many are oxygen and how many are hydrogen?

    asked on September 2, 2008
  73. Math

    How do you do 4ln(2x+3)=11

    asked on January 27, 2016
  74. Math

    The rate of inflation in Ethiopia was 41% in 2008. What was the percentage decrease that year in the buying power of the birr (the currency of Ethiopia)? A. 41.0% B. 69.5% C. 29.1% D. 37.5%

    asked on June 28, 2015
  75. Stats

    A population distribution has σ = 42. How many points from the mean are a z -score of z = +2.00 and a z-score of -1.56?

    asked on March 10, 2019
  76. math

    Both antibiotics were prescribed in high dosage slow release capsules. The function C(x)= 5log(x+1) + 10 models the concentration of levofloxacin in mol/L over a time x, in hours. The function D(x) = 10log(x+1) + 5 models the concentration of metronidazole

    asked on July 8, 2018
  77. algebra

    In a certain medical test designed to measure carbohydrate tolerance, an adult drinks 9 ounces of a 20% glucose solution. When the test is administered to a child, the glucose concentration must be decreased to 10%. How much 20% glucose solution and how

    asked on September 18, 2019
  78. geometry

    im not that good at geometry i need some one to check this for me XY bisects AB at point g which of the following is true about point g a. g is the mid point of AB b. g is the mid point of XY c. g is the mid point of AB and XY d. none of these*

    asked on February 8, 2018
  79. math

    the average attendance of a class from monday to wednesday was 39 and that from wednesday to saturday was 39.5. What was the attendance on wednesday, if the average attendance from monday to saturday was 40 I did this:- m+t+w/3=39 w+Th+F+S/4=39.5

    asked on September 7, 2014
  80. 3rd grade

    When you write 2,500 in expanded form, how many addends do you have? 2,000+ 500+0+0 ??

    asked on October 28, 2009
  81. math

    Six hundred people attended the premiere of a motion picture. Adult tickets cost $12, and children were admitted for $9. If box office receipts totaled $6720, how many children attended the premiere?

    asked on September 18, 2019

    A forest owned by the Jumbo Lumber Corporation contains 7,820 trees. If Jumbo Lumber cuts down 77 trees every day, which function can be used to find the number of trees, n, left in the forest after t days? A. n(t) = 7,820 - 77t B. n(t) = 7,820t - 77(my

    asked on November 8, 2017
  83. Algebra

    A flower garden has 3 times as many red roses than pink roses. Twice the number of red roses is the same as four times the number of pink roses increased by 10, how many red roses are there/ I know that X = red roses and Y = pink rose 1. x=3y and 2x=4y+10

    asked on February 25, 2019
  84. Haley

    Three circles with radii 35cm, 50cm, and 65cm respectively are tangent to each other externally. Find the angles of the triangle formed by joining the centers of the circles. My teacher said to use the cosine law cause you know 3 sides but no angles. But I

    asked on August 27, 2014
  85. i dont know

    What is the capital of the state that shares its long southern border with Texas?

    asked on February 16, 2010
  86. math

    Convert: 2.7x10^-3 kg/cm^3 to kg/m^3 0.81 g/cm^3 to kg/m^3

    asked on August 26, 2008
  87. math

    suppose you have a pipe with circumference of 8 cm and length equal 3 cm and that 10 turn of a wire are wrapped about the pipe. what is the length of the wire

    asked on December 7, 2007
  88. Liz

    A rectangular lawn measuring 8m by 4m is surrounded by a flower bed of uniform width. The combined area of the lawn and the flower bed is 165cm^2. What is the width of the flower bed

    asked on August 27, 2014
  89. Semia

    A circular sinkhole has a circumference of 75.36 meters. A week later, it has a circumference of 150.42 meters. a. Estimate the diameter of the sinkhole each week. The sinkhole is about ? meters the first week. The sinkhole is about ? meters the second

    asked on May 7, 2016
  90. Math Help

    A shop owner bought 30 folders and some journal. He paid @82.50 for the folders. Each journal cost 10 times as much as a folder. What was the cost of each journal?

    asked on May 28, 2014
  91. Finance

    You have a balance of $7500 on your credit card and you make no further charges. If your APR is 12.5% and each month you make only the minimum payment of 5% of your balance, then find a formula for the balance after t monthly payments. A) 7500(0.959896) t

    asked on June 28, 2015
  92. pre calculus

    Use a calculator to find the approximate value of sin-1( 0.635).

    asked on September 20, 2014
  93. ms1998

    On a windless day, a bird can fly at a constant 10 m/s. It flies 6.0km east and then home again. How much time does the round trip take? I keep getting 600 seconds, but my teacher still tells me it's wrong.

    asked on January 27, 2014
  94. Check!!!

    okay so the question is: A unit circle center at the origin undergoes a series of transformations. The equation of the resulting graph is (x-3)^2+ (y+4)^2= 25 describe the transformation the unit circle underwnt Answer: The original circle was centered at

    asked on February 14, 2007
  95. math

    An algebra student has won $500,000 in a lottery and wishes to deposit it in savings accounts in two financial institutions. One account pays 11% simple interest, but deposits are insured only to $250,000. The second account pays 6.3% simple interest, and

    asked on September 18, 2019
  96. math

    The graph below shows the rate of natural gas usage (in therms per day) in one household for a 30 - day period. Estimate the total number of therms used during this period. Use left endpoints and rectangles with widths of 3 days. View graph at: postimg.o r

    asked on November 22, 2013
  97. math

    The ratio of the ages of ramu and his sister is 3:4 . If the age of his sister is 36,how old is ramu?

    asked on March 29, 2016
  98. math

    the area of an equilateral triangle is given by the expression s^2 x square root of 3/4, where s is the side length of the triangle. what is the area of the triangle? round to the nearest tenth the triangle is 5 cm on all three sides.

    asked on December 26, 2014
  99. math

    In the addition problem at the bottom, the sum of the two digits represented by B and C is ?. Each time the same letter appears it represents the same digit) 2BA +C6D____ 8AD

    asked on December 5, 2013
  100. math

    what is 57% of 11?

    asked on November 28, 2018


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