Math

Newest questions and responses by Math

  1. math

    what is 57% of 11?

    asked on November 28, 2018

  2. Math

    If the average of a, b, and 7 is 13; what is the average of a + 3, b - 5, and 6?

    asked on October 20, 2018

  3. 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 18, 2018

  4. Trigonometry

    Q P

    asked on October 15, 2018

  5. math

    Find the equation of the line in slope-intercept form. b=4 and m=−5

    asked on October 14, 2018

  7. math

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

    asked on September 20, 2018

  8. math

    There are 120 student in class in which 20 of them are girls and rest boys.if the average marks in math of boys is 65% and that of girls is 80%. find the average marks of the class

    asked on September 6, 2018

  9. 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

  10. 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

  11. 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

  12. Anonymous

    The following table compares the speed you drive in km/h to the fuel economy in km/L. Find the speed you need to travel to max your fuel economy. Speed 24 32 40 48 56 64 72 80 89 97 105 113 Fuel Economy 9.48 10.84 11.69 12.33 12.24 12.75 12.71 12.84 12.92

    asked on May 3, 2018

  13. 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 2, 2018

  14. Math

    The following table compares the speed you drive in km/h to the fuel economy in km/L. Find the speed you need to travel to max your fuel economy. Speed 24 32 40 48 56 64 72 80 89 97 105 113 Fuel Economy 9.48 10.84 11.69 12.33 12.24 12.75 12.71 12.84 12.92

    asked on May 2, 2018

  15. math

    Pat has 4 1/2 feet of fabric each piece is 9 inches how man pieces can pat cut

    asked on April 4, 2018

  16. Math

    Amanda cuts of 45-cm ribbon into two pieces in the ratio of 4:5 find the length of the shorter piece.

    asked on March 6, 2018

  18. Math

    Find the function rule (-2,9) (-1,4) (0,-1) (1,-6) (2,-11) I think the function rule is you subtract 5 from the y as you go on.

    asked on March 1, 2018

  19. Economics

    Can anyone walk me through the solution of this problem? 1/2(1600/E)^1/2*50=? Thank You

    asked on February 15, 2018

  20. 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

  21. Math

    On Friday Naomi walked 3/4 of a mile. On Saturday she walked 1 2/3 of a mile On Sunday she walked 2 3/5 of a mile. How many miles did she walk in total?

    asked on February 4, 2018

  22. science

    What are the differences between aa lava and pahoehoe lava? What are the similarities between these two types of lava?

    asked on February 2, 2018

  23. 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

  24. 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

  25. math

    13. solve the equation 4 2/5x = 12 1/10 A.7 7/10 B.2 3/4-My Answer C.2 1/2 D.4/11 Please help!!!

    asked on January 12, 2018

  26. 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 10, 2018

  27. 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

  29. Math

    A school wants to build a fence to enclose a rectangular 4-sided playground of 144m^2. What is the min cost for a fence if it costs $5.70 per meter of fencing? 2. The principal checks the budget an sees that only $228 is available for the purchase of

    asked on December 6, 2017

  30. math

    3(y + 1) for y = 2 A 6 B 9*** C 7 D 8 If anybody has taken this test, it would be great if you could help me on some other answers in this test.

    asked on November 27, 2017

  31. math

    Solve each linear system. Verify each solution by substituting the coordinates of your solutino into both equations. a) y = -x and y = x - 6 b) x - y = 8 and x + 2y = 2

    asked on November 13, 2017

  32. MATH PLEASE HELP

    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 9, 2017

  33. MATH PLEASE HELP

    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

  34. math

    the circumference of s sphere is measured to be 10 cm with an error of 0.4cm.the this radius is used to calculate the area and volume.find the errors in the calculated radius,area and volume

    asked on October 30, 2017

  35. Math

    The cost of 1lb of strawberries is a dollar more than the cost of 1lb of grapes. If ms. A bought 2lbs of strawberries and 5lbs of grapes for $12.50. What is the cost of the fruits.

    asked on October 10, 2017

  36. math

    32-q+0.25q=15.50 Can someone explain how to solve this?

    asked on October 10, 2017

  37. math

    Debra has $67 loonies and toonies. If there are 45 coins in total, how many loonies are there

    asked on October 10, 2017

  38. Math

    5/8 + 7/12

    asked on September 23, 2017

  40. math

    Write y to the power of -4 as a power with only positive exponents. Thanks need help on this question

    asked on September 22, 2017

  41. math

    Differentiate s=(2-t)^2 with respect to t

    asked on September 16, 2017

  42. Math

    I am a 5 digit number. All my digits are the same and the sum of digits is 40 .

    asked on September 3, 2017

  43. Math

    A car dealer purchases 40 new cars at 6,500 each. He sold 40% of them at 8,000 each and the rest of them at 9,000 each. What is his total profit?

    asked on July 31, 2017

  44. math

    solve y=0.04x^2+8.3x+4.3

    asked on May 25, 2017

  45. math

    1.one more than 3 tens 2.one less than four times five 3.five added to six 4.successor of 28 5.two more than two times tens 6.the greatest 1 digit composite number 7.three added to three times three

    asked on May 14, 2017

  46. 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 9, 2017

  47. Math

    Did John Cena ever do math? It doesn't look like he did..

    asked on April 24, 2017

  48. math

    Can someone please tell me what is the percentage of 19.24 from 14.00? I would like someone to give the formula of solving this. Thank You!

    asked on April 20, 2017

  49. algebra

    Suppose x can be expressed as a function of y by x = 5y − 3. a. How can y be expressed as a function of x? b. What is the relationship between the slopes of the two linear equations? c. How do the x-intercepts and y-intercepts of the two equations

    asked on April 19, 2017

  51. math

    round to the nearest hundredths 1.5.

    asked on April 17, 2017

  52. 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

  53. math

    what can * by -168 and adds to get 21.

    asked on April 17, 2017

  54. Math

    Is x+3=2y and x=2y-3 have infinitely solutions or one solution or no solution

    asked on March 30, 2017

  55. Math

    I am confused on this. Can anyone show me where to start on how to solve it? Given the cipher and function below, decode the following message: 14-2-21-9 10-20 7-22-15 Function: f(x)=2x-2 Cipher A=2, b=4, c=6, d=8, e=10, f=12, g=14, h=16, i=18 j=20, k=22,

    asked on March 22, 2017

  56. Math

    Construct a right triangle having hypotenuse of length 5.6 and one of whose acute angle measure 30

    asked on March 19, 2017

  57. MATH

    The grocery store parking lot is shaped like a parallelogram. Mr.Campbell is paving the parking lot.The area of the parking lot is 6x^2-3x-3m^2. what are the measures of the height and base of the parking lot. i did 3(2x^2-x-m^2) as my first step but now i

    asked on March 11, 2017

  58. 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 8, 2017

  59. Pam

    How to find the vertex ? f(x)= x^2-3

    asked on February 27, 2017

  60. Pam

    What is the horizontal asymptote? y=x^2+11x+16/x+8

    asked on February 26, 2017

  62. 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 9, 2017

  63. Math

    A meteorologist predicted that the downtown area would get 16 inches of snow in a snowstorm. The downtown area ended up getting 13 inches of snow. What was the percent error of the prediction?

    asked on February 8, 2017

  64. 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

  65. math

    One half a number minus 6 is 4 . What is the number?

    asked on February 1, 2017

  66. Math

    A class has 30 boys and 25 girls. what is the percentage of boys in the class?

    asked on December 27, 2016

  67. 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

  68. Emma

    Solve (√6+i)(√6-1)

    asked on November 27, 2016

  69. pre calc

    You have a sample of a certain radioactive substance. After two days, thirty percent of the sample has decayed. What is the half-life of the material and how much will have decayed after a week?

    asked on November 23, 2016

  70. physics

    An ideal gas has the following initial conditions: Vi = 490 cm3, Pi = 5 atm, and Ti = 100°C. What is its final temperature if the pressure is reduced to 1 atm and the volume expands to 1000 cm3?

    asked on November 7, 2016

  71. 2nd grade math

    Please help. I'm confused here's an example: 38+45=? Show how to make one added the next tens number?

    asked on November 3, 2016

  73. Plane Trigonometry

    tan A=-4/5;A in Quadrant 2 and cos B=-5/13: B in Quadrant 3. What is the exact value of the expression cos(A+B)?

    asked on November 2, 2016

  74. physics

    Given that the carbon atom has a mass of 12 amu, how many carbon atoms are there in a diamond with a mass of 8 g? ....atoms

    asked on November 2, 2016

  75. math

    Find the value of K so that x^2-5x+k=0 has one root equal to 4.

    asked on October 29, 2016

  76. Math

    A glass containing 250 mL of 80% iodine solution tips over spelling part of its contents. This subsequently replaced by an amount from a mixture of 40% iodine. If a 72% solution is resulted, how much was spilled?

    asked on October 28, 2016

  77. Math

    How many kg of pure salt must be added to 8 kg of a 30% solution to obtain a 35% soltution?

    asked on October 28, 2016

  78. 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 27, 2016

  79. pre-calc

    |2x+1| greater than or equal to |x-3|

    asked on October 12, 2016

  80. Pre-calc

    Alice walks on a straight line at four miles per hour. Two hours after she begins walking, Bob runs after her at a rate of six miles per hour. How fast (in miles per hour) is Bob gaining on Alice?

    asked on October 11, 2016

  81. pre-calc

    Alice walks on a straight line at four miles per hour. Two hours after she begins walking, Bob runs after her at a rate of six miles per hour. How fast (in miles per hour) is Bob gaining on Alice?

    asked on October 11, 2016

  82. pre-calc

    Alice walks on a straight line at four miles per hour. Two hours after she begins walking, Bob runs after her at a rate of six miles per hour. How fast (in miles per hour) is Bob gaining on Alice?

    asked on October 11, 2016

  84. pre-calc

    We use the same polynomials as in the first question. Suppose that 3x^3 + 2x + 1 = (ax^2 + bx + c)(x+2) + d. Then b is equal to:

    asked on October 10, 2016

  85. Pre-Calc

    A force, F, on a body of mass m causes the body to accelerate. Denote the acceleration of the body by a. The relationship between force, mass, and acceleration is F = ma. If we take the unit of mass to be a kilogram, the unit of distance to be a meter, and

    asked on September 30, 2016

  86. pre-calc

    The force, F, between two bodies of mass m1 kilograms and m2 kilograms whose centers of mass are a distance of r meters apart is given by the formula F = (Gm1m2)/ r2 where G is the gravitational constant of the universe. What are the units of the

    asked on September 30, 2016

  87. 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

  88. Math

    In a particular​ year, a total of 63,172 students studied in two of the most popular host countries when traveling abroad. If 7306 more students studied in the most popular host country than in the second most popular host​ country, find how many

    asked on September 28, 2016

  89. Pre-calc

    Problem 1. Suppose x > 0. Simplify the expression [(x+h)^1/2− (x) ^1/2]/h . For what values of h is this expression defined?

    asked on September 26, 2016

  90. Math

    Alice paints at a rate of 10 square feet per minute and Bob paints at a rate of 8 square feet per minute. If they work together, how many square feet can they paint per minute?

    asked on September 25, 2016

  91. 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

  92. 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

  93. geometry

    The area of a triangle with sides 10,10,12 is __ sq. units.

    asked on September 16, 2016

  95. lin

    the product of the factors of 6

    asked on September 15, 2016

  96. lola

    how much bigger than -9 is -1

    asked on September 15, 2016

  97. Math

    If there are 5 boys and 7girls, in how many ways can 5 boys and 5girls sit in a round table? Is the ans : 5!*4!*7c5? Reason: since there are 5 boys so (5-1)! And left 5 seats for girls so 7c5 and within the girls theres 5 diffrent ones so another 5!

    asked on September 5, 2016

  98. maths

    Different ways of arranging 72 books in equal piles

    asked on August 25, 2016

  99. lauren

    ​$6300 is​ invested, part of it at 11​% and part of it at 77​%. For a certain​ year, the total yield is ​$565.00. How much was invested at each​ rate? how much was invested at 11% and 7%? thank you

    asked on August 25, 2016

  100. Ap series

    Sum of first six term of an ap is 46 ratio of its 10th term to that of 30th term is 1:3. Find its 13th term

    asked on August 2, 2016

  101. mathematics

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

    asked on July 17, 2016

  102. math

    6 red balls and 5white total 20balls how many yellow balls find probility

    asked on July 9, 2016

  103. Maths Year 10

    Q) the difference between two numbers is 5. A) if the larger number is k, what is the other number? B) write a simplified expression for the product of both numbers. ??? ty in adv.

    asked on June 25, 2016

  104. 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

  106. Math

    In a piggy bank Jane has 8 more quarters than dimes and she has 5 less nickels than dimes. Write an algebraic expression

    asked on May 10, 2016

  107. Math

    In a piggy bank Jane has 8 more quarters than dimes and she has 5 less nickels than dimes. Write an algebraic expression

    asked on May 9, 2016

  108. 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

  109. math help please

    An art teacher had a total of t markers. He gave an equal number of markers to each of 18 students and had 16 markers left over. Which equation could be used to find n , the number of markers each student received? A t = 18n B t = 34n C t = 18n + 16 D t =

    asked on April 27, 2016

  110. math

    a die is rolled in such a way that even faces are twice as likely to occur as the odd faces. what is the probability that a prime number shows up when rolled?

    asked on April 26, 2016

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