Marth

Most popular questions and responses by Marth
  1. SS

    So... what were the correct answers?

    posted on April 26, 2017
  2. math

    6 topping choices, 2 toppings per pizza: 6 choose 2, which is 6!/(2!4!)

    posted on February 21, 2016
  3. computer science

    4×512MB = 2GB = 2^31 bytes. To address any byte requires 31 bits.

    posted on February 21, 2016
  4. math

    It depends on the distribution of x bar.

    posted on February 21, 2016
  5. Stats/Probability

    "Red OR Yellow" should be a giveaway. Here P(A and B)=0 because a red car is not yellow. P(A)+P(B)=0.12+0.04 = 0.16

    posted on February 20, 2016
  6. theoretical probability

    There are 2 digits (8,9) greater than 7. So every student has a 1/5 chance of choosing a digit greater than 7. With 25 students, the expected number that choose a digit greater than 7 is 25/5 = 5. I would not say the "predicted" number, but rather the

    posted on February 20, 2016
  7. math

    b) He can throw 5 types of pitches each pitch. With 5 pitches, there are 5^5 possible combinations.

    posted on May 20, 2011
  8. computer science

    File sizes are given in bytes, while download speeds are given in bits. 4 GB = 4*1024 MB = 4*1024^2 KB = 4*1024^3 Bytes - 4*1024^3*8 bits. 43.2kbps = 43.2*1000 bits per second. The time required is 795.364s, or 220.935 hours. Note that 43.2kbps is quite a

    posted on May 20, 2011
  9. algebra

    When the world record is less than 3.1, R is less than 3.1. 3.1 = -0.075t + 3.85 Solve for t (in years after 1930).

    posted on May 20, 2011
  10. Math

    The fence forms the perimeter of the rectangle. What is the perimeter?

    posted on May 19, 2011
  11. math

    Is the domain of g equal to A? Is the range of g a subset of B? if both are true, then g maps A to B.

    posted on May 14, 2011
  12. Trig- Check my answer Please

    What is the length of ? Divide by its length, giving the result a length of 1 - an unit vector.

    posted on May 14, 2011
  13. math

    How many inches are in a foot?

    posted on May 14, 2011
  14. math

    What is the equation for the volume of a sphere? Try googling it.

    posted on May 14, 2011
  15. math

    How could you get only x on the left hand side?

    posted on May 14, 2011
  16. geometry

    It doesn't. 100 is not divisible by 6, nor is 83 divisible by 5.

    posted on May 14, 2011
  17. Math

    13 is a good guess. But when in 2011 do they actually turn 13?

    posted on May 14, 2011
  18. math geometry

    Use Pythagorean Theorem. a^2 + b^2 = c^2, where c is the hypotenuse of the right triangle.

    posted on February 14, 2011
  19. Math

    Find the slope and y intercept of each, and compare. m = (y1-y2)/(x1-x2) to find the slope. y - y1 = m(x-x1) to write the line in slope-intercept form.

    posted on February 9, 2011
  20. Algebra

    You can factor out a 4a from each term.

    posted on February 3, 2011
  21. MATH

    No two numbers add to 50. Therefore we must use at least 3 numbers to get the sum. 25+19+6 = 50: a solution exists for 3 numbers.

    posted on January 27, 2011
  22. Math Algebra 2

    Substitute in the values of p and r. p = 10 r = -4 p^2 - r^2 = (10)^2 - (-4)^2 = ?

    posted on January 27, 2011
  23. math

    (1/8)-(1/8)2+(1/8)3 = (1/8)(1-2+3) by factoring.

    posted on January 26, 2011
  24. College Algebra

    Correct

    posted on January 22, 2011
  25. beginning algebra

    2 + 7/y = 3/5 7/y = 3/5 - 2 y/7 = 1/(3/5 - 2)

    posted on January 22, 2011
  26. algebra

    y - y1 = m(x - x1) The point (x1, y1) is given as (4, -5). The slope m is given as -3.

    posted on January 20, 2011
  27. algebra

    The probability that Jonas gets an orange is 5/11. Given that Jonas gets an orange, the probability that Beth gets an apple is 4/10. So the probability that Jonas gets an orange and Beth gets an apple is (5/11)*(4/10).

    posted on January 20, 2011
  28. Geometry

    Let x and y be the sides. By Pythagorean Theorem, x^2 + y^2 = 600^2. x+y+600 = 1400

    posted on January 18, 2011
  29. MATH

    881/5 = 880/5 + 1/5

    posted on January 18, 2011
  30. Math

    To find the inverse, swap f(x) and x: f(x) = 10x-5 x = 10f^-1(x)-5 Now solve for f^-1(x).

    posted on January 18, 2011
  31. Math

    Elaine takes 2.8s more than Pamela: Elaine takes 2.8s + 52.3s =

    posted on January 18, 2011
  32. Algebra

    x^2-6x-3=0 x = (-b +/- sqrt(b^2-4ac))/(2a) x = (6 +/- sqrt(6^2 - 4(1)(-3)) ) / (2(1))

    posted on January 16, 2011
  33. Math

    Set up a proportion: 8%/56 = 100%/x

    posted on January 16, 2011
  34. algebra

    Plug the values in. h = 50m t = 2s v = 30m/s h+vt+4.9*t^2=?

    posted on January 15, 2011
  35. physics

    V=d/t d=V*t Let t be the time the man is jogging. t-2 is the time the dog is running (since the dog waits 2s). When they catch up with each other displacement will be equal. (4m/s)(t-2)=(1.8m/s)(t)

    posted on January 15, 2011
  36. math

    The difference of two squares is a^2-b^2, for a and b any expression. It should be easy to determine if a polynomial fits that form.

    posted on January 15, 2011
  37. Preap Physics!!

    There are several types of potential energy - spring potential energy, chemical potential energy, etc.

    posted on January 11, 2011
  38. math

    If the relationship is linear, then the line formed by any two points will pass through all points. Find the line through the first two points. Then check to see if the rest of the points are on that line.

    posted on January 11, 2011
  39. algebra

    There are two solutions because of the absolute value sign. x-3x+5 = 7 or x-3x+5 = -7

    posted on January 11, 2011
  40. algebra 2

    yes

    posted on January 10, 2011
  41. algebra

    Jeffs car takes 20% less gas, so it gets 21/(1-0.2) miles per gallon. To drive 570 miles at 21 miles per gallon requires 570/21 gallons.

    posted on January 10, 2011
  42. algebra 2

    You can factor out 4x from both terms.

    posted on January 10, 2011
  43. math

    Teaching makes you learn something well. You've had scientific notation in class, right? Pretend I don't know scientific notation, and explain to me what it is. (That will be your answer).

    posted on January 10, 2011
  44. MATH 12 HELP!!

    There are 15 choose 4 ways to choose 4 toppings. There are 15 choose 2 ways to choose salami, green pepper, and 2 other toppings. P{salami and green pepper) = C(15, 2) / C(15,4).

    posted on January 9, 2011
  45. Algebra 2

    Use synthetic division with -3, then factor the remainder.

    posted on January 9, 2011
  46. Algebra

    Let x be the amount of time of the breakeven point. Then 84+50x = 60x.

    posted on January 9, 2011
  47. Math: Algebra 2

    Try factoring out (2x-3) through grouping.

    posted on January 9, 2011
  48. algebra

    f(x) = 2x^2-3x f(0) = 2(0)^2-3(0) = 0 f(-1) = 2(-1)^2-3(-1) f(2)=?

    posted on January 9, 2011
  49. algebra 2

    The zeroes are 1, 2, and 3, so the factors are (x-1), (x-2), and (x-3). Those are 3 factors for a 3rd degree polynomial, so no other factors are needed. f(x) = C*(x-1)(x-2)(x-3), where C is any constant. f(0) = 18 allows you to determine C.

    posted on January 9, 2011
  50. math

    Let a be the value of "a", e be the value of "e", etc. for i, o, and u. Audacious has a u a i o u = 260. So 2a+i+o+2u = 260. Do the same for the other 4 words; you have 5 equations for 5 variables.

    posted on January 9, 2011
  51. geometry

    The diagonal forms a right triangle with 2 sides of the square. The sides are of equal length, so you can use Pythagorean Theorem to find a side of the square.

    posted on January 9, 2011
  52. Math

    Suppose you buy x shirts to be shipped as one order. What is the cost of the shirts? What is the cost of shipping?

    posted on January 9, 2011
  53. math analysis

    If csc(x) = 30/150, sin(x) = 150/30. That is not in the range of sine.

    posted on January 9, 2011
  54. Calculus

    The derivative of ln(u) is u'/u. Use Chain Rule for the rest.

    posted on January 9, 2011
  55. Algebra

    What variables did you use in part a?

    posted on January 9, 2011
  56. math

    The points at the tail of the skew affect the mean, but the median will remain in the middle of the curve.

    posted on January 9, 2011
  57. Math

    Try writing an equation for each problem. It's easy to make a mistake while glancing over the answer choices.

    posted on January 9, 2011
  58. Algebra II

    x^2+2x-3 factors into (x+3)(x-1). You can divide x^4-5x^3-16x^2+23x-3 by (x+3) and (x-1) using synthetic division, which may be easier.

    posted on January 9, 2011
  59. Math

    Use L'hopital's Rule.

    posted on January 7, 2011
  60. algebra

    -2x-

    posted on January 7, 2011
  61. Math

    The player makes 60% of the shots. So the odds are 60:40 in favor of her making the first shot.

    posted on January 6, 2011
  62. physics

    q1 exerts a force on q in the positive direction, and q2 exerts a force on q in the negative direction. F = k(q1q2)/r^2 is the force exerted on one point charge by another. ΣF = k(q*q1)/(0.24)^2 - k(q*q2)/(0.37)^2 = 24. q and q1 are given. q2=?

    posted on January 6, 2011
  63. math

    a > b = "a is greater than b" a < b = "a is less than b"

    posted on January 6, 2011
  64. algebra

    What is your question?

    posted on January 6, 2011
  65. Physics-Please check

    1) Yes, the gravitational force diminishes the farther you get, but by what factor? Check the equation. 2) The speed of the earth keeps it in orbit around the sun. Changing the mass changes the gravitational force, which is also the centripetal force for

    posted on January 5, 2011
  66. math

    Pythagorean Theorem: a^2 + b^2 = c^2 c is the hypotenuse

    posted on January 5, 2011
  67. math

    You gain $3 if you get a 6, and always pay $0.90. E[X] = (1/6)*3 - $0.90

    posted on January 5, 2011
  68. algebra

    What is your question?

    posted on January 5, 2011
  69. Math

    Yes

    posted on January 5, 2011
  70. algebra

    25% was marked off the original price of $88.

    posted on January 4, 2011
  71. fraction x whole number

    7/10*30 = 7/10*10*3 = 7*3 = 21

    posted on January 4, 2011
  72. algebra

    If |3n+5| = 7, then 3n+5 = 7 or 3n+5 = -7. There are two possibilities for n; find both.

    posted on January 4, 2011
  73. Math

    18 < 20-w 18-20 < 20-w-20 -2 < -w Flip the inequality sign when multiplying by -1. 2 > w

    posted on January 4, 2011
  74. science

    The boiling point and condensation point are identical.

    posted on January 4, 2011
  75. Math

    Numbers are ascending left to right. Is -7 to the left or to the right of -6?

    posted on January 4, 2011
  76. Math

    Yes

    posted on January 4, 2011
  77. Math

    x+8 < 11 x+8-8 < 11-8 x < 3 Inequalities are almost like regular equations.

    posted on January 4, 2011
  78. math

    Ok. Then the perimeter of the triangle is w + l/2 + 5. So w+l/2+5 = 12m, and 2(l+w)=22m.

    posted on January 4, 2011
  79. Math

    Draw a number line, and label -7 and -6.

    posted on January 4, 2011
  80. math

    Let x be the amount of money Beth has. Let y be the amount of money Suzy has. "beth has $0.60 more than suzy." x = 0.60+y. "together they have $8.20." x+y = 8.20 Solve the system of equations.

    posted on January 4, 2011
  81. Math pre-algebra

    3/1.65 = 5/x

    posted on January 4, 2011
  82. Math

    This is a simple triangle problem - it may help to draw it out. Draw the height perpendicular to the ground, and the ramp is the hypotenuse. The solution is a proportion. Let x be Pam's height. Then 15/9 = (15+20)/x. x=?

    posted on January 4, 2011
  83. math

    Is the base of the triangle the width of the rectangle, and the height of the triangle half the length of the rectangle?

    posted on January 4, 2011
  84. Math

    x+8

    posted on January 4, 2011
  85. Math

    10-4(5x+1) Distribute the 4 =10-20x-4 =6-20x

    posted on January 4, 2011
  86. math

    Are you referring to the triangle formed by the diagonal of the rectangle and two of its sides? If the dimensions are 8m by 3m, the hypotenuse of said triangle cannot be 5m.

    posted on January 4, 2011
  87. Math

    I appreciate trying to help, but please work out the problems to show how the answer is reached. (It also helps to check your work). Standard form of a line is ax+by = c, with a, b, and c integers. y+2 = (1/2)(x-4) Distribute the (1/2). y+2 = x/2-2

    posted on January 4, 2011
  88. Pre-Algebra

    12+5 > y-5+5 17 > y

    posted on January 4, 2011
  89. math

    The perimeter of the rectangle is 22m. So 2(l+w) = 22. l+w = 11 l = 11-w Also, l^2+w^2 = 5^2 by Pythagorean Theorem. Substitute in l = 11-w: (11-w)^2+w^2=5^2

    posted on January 4, 2011
  90. algebra

    6.67*10^-11 = 6.67/10^11

    posted on January 4, 2011
  91. algebra

    Substitute in x = 35-5y in 4x+9y = 52. 4(35-5y)+9y = 52 Solve for y. Then, plug the value of y into either of the original equations to find x.

    posted on January 4, 2011
  92. Math

    Factoring the tens is a technique for mental multiplication which relies on the fact that 10*n, for any real number n, is easy to compute. 6*2 = 12 is a memory value. 6*20 = 6*2*10 = 12*10 = 120 60*20 = 6*10*2*10 = 12*10*10 = 1200

    posted on January 4, 2011
  93. Math

    2+m < 2 2+m-2 < 2-2 m < 0

    posted on January 4, 2011
  94. math

    (2/5)Q

    posted on January 4, 2011
  95. math

    Let l be the length, and w be the width, of the rectangle. The perimeter of the rectangle is 2(l+w). The perimeter of the triangle is l+w+sqrt(l^2+w^2). sqrt(l^2+w^2) is the hypotenuse of the triangle. There are two equations and two variables. Find l and

    posted on January 4, 2011
  96. Math/Trig

    The period of the parent function is 2pi. The factor of 1/2 applied to x changes the period to 2pi/(1/2) = 4pi.

    posted on January 4, 2011
  97. Math

    t is the price of the movie ticket. We know that 3 tickets is less than twenty dollars, because the student got change back. 3t < 20

    posted on January 3, 2011
  98. algebra

    Given the slope m and the point (x1, y1), use the equation y-y1 = m(x-x1) to find the equation of the line.

    posted on January 3, 2011
  99. math

    8*5*9 = 4*2*5*9 = 4*10*9 = 36*10 = 360

    posted on January 3, 2011
  100. math

    That is an expression. What is your question?

    posted on January 3, 2011