Richard D

Most popular questions and responses by Richard D
  1. College Math

    Simplify the algebraic expression 3xz + 4xy – 2yz + xy + 5yz – 9xz and evaluate it for x = 3, y = -2, z = -5. Identify the variables, constants, and coefficients in the simplified expression.

    asked on October 11, 2012
  2. College Math

    A clarinet factory wants to maximize profits. They can produce 250 clarinets per week at a cost of $300 per clarinet, and sell them for $1000 per clarinet. And, they can produce 350 clarinets per week at a cost of $275 per clarinet, and sell them for $900

    asked on October 19, 2012
  3. College Math

    Simplify the algebraic expression 3z3 – 5x2 + 2 – 4y2 + 6x2 – 4z3 – 7y + 12 – 2x and evaluate it for x = -2, y = -3, z = -4. Identify the variables, constants, and coefficients in the simplified expression.

    asked on October 11, 2012
  4. College Math

    Find an equation in slope-intercept form passing through the points (-4.7, 16.3) and (-2.9, 16.3). Hint: first find the slope!

    asked on October 19, 2012
  5. College Math

    In a certain triangle the measure of one angle is triple the measure of a second angle but is 110 degrees less than the measure of the third angle. [The sum of the measures of three interior angles of a triangle is always 180 degrees.] What is the measure

    asked on October 11, 2012
  6. College Math

    Mary buys $32,000 worth of gold, and sells it a year later for $41,000. If she is required to pay 23% capital gains tax on her profit, how much tax will she pay?

    asked on October 19, 2012
  7. College Math

    A temperature of 38 degrees Fahrenheit (F) is equivalent to 276.483 degrees Kelvin (K), while a temperature of 75 degrees F is equivalent to 297.039 degrees K. (a) Using the algebra methods from this class, find the equation converting Kelvin temperature

    asked on October 19, 2012
  8. College Math

    Find the area of a rectangle if three of its corners are (-3.7, -3.1), (1.2, -3.1), and (1.2, 5.3). Hint: find the 4th corner first.

    asked on October 19, 2012
  9. College Math

    Using EZgraph, graph the following equations; calculate the slope, x-intercept, and y-intercept, and label the intercepts on the graph. 3. 4.9x – 7.2y = 2.3 4. 2x = -8 5. 3.7x + 4.2y = 5.03

    asked on October 19, 2012
  10. College Math

    Find the area of a rectangle if three of its corners are (-3.7, -3.1), (1.2, -3.1), and (1.2, 5.3). Hint: find the 4th corner first.

    asked on October 19, 2012
  1. College Math

    How do you solve for the length you don't have to slove it but what would the formula be ?...

    posted on October 19, 2012