Math

2x^2+9x-5 is the area of a rectangle and one side of the rectangle is x+5, What is the other side of the rectangle?

A volume of a cube is 15625cm cubed. What is the length from point A to B in the cube?
Point A is on the front bottom right corner and point B is on the the other side of the cube on the top left side so the line is like this: \

Please help:)

  1. 👍 0
  2. 👎 0
  3. 👁 173
asked by Miley
  1. well, it has to be a x + b to get a quadratic for the area

    (ax+b)(x+5) = 2 x^2 + 9 x -5
    so divide

    ********* 2x -1
    *******________________
    (x+5) | 2 x^2 + 9 x - 5
    ********2 x^2 + 10 x
    --------------------------
    ****************-x - 5
    ****************-x - 5
    Remainder = 0, (good thing)
    so
    The other side is (2x-1)

    1. 👍 0
    2. 👎 0
    posted by Damon
  2. Thank u so much but do u get the second question? Cause I'm really stuck on it

    1. 👍 0
    2. 👎 0
    posted by Miley
  3. side = s
    diagonal across bottom = s sqrt 2
    then diagonal above that to upper corner
    sides = s sqrt 2 and s
    so
    d = sqrt (2 s^2 +s^2) = sqrt (3 s^2)
    = s sqrt 3

    here s = 15625^(1/3) = 25 remarkably enough

    so our d = 25 sqrt 3 = 43.3

    1. 👍 0
    2. 👎 0
    posted by Damon
  4. I can only do one at a time, very old and weak brained.

    1. 👍 0
    2. 👎 0
    posted by Damon
  5. OMG thank u so much!!! Though I have 1 more question sorry. The cost of jewelry is the fixed amount + % of value. It costs $32 to insure $1000 of jewlerry. And it costs $44.50 to insure $3500. What is the fixed amount to insure?

    1. 👍 0
    2. 👎 0
    posted by Miley
  6. C = !@#$%^& v
    32 = !@#$%^& (1000)
    44.5 = !@#$%^&(3500)
    ------------------ subtract
    -12.5 = -2500 k
    k = .005 or .5 %
    then go back with that k
    32 = f + 5
    f = 27

    1. 👍 0
    2. 👎 0
    posted by Damon
  7. Thank u so much :):):):)

    1. 👍 0
    2. 👎 0
    posted by Miley

Respond to this Question

First Name

Your Response

Similar Questions

  1. Math

    The first question is this: Helen designs a rectangle with an area of 225 square units. Her rectangle is the largest rectangle (that is, with largest area) with whole-number side lengths that can be made from the perimeter of the

    asked by Gabby on February 25, 2013
  2. Math

    answer to travis has designed a rectangle with an area of 59 square units. his rectangle is the smallest rectangle with whole number side lengths. what are the length and width of the rectangle, explain your reasoning. what is the

    asked by Nadia on April 10, 2011
  3. math

    The rectangle pictured consists of two squares placed side by side. The perimeter of the rectangle is 60 cm. What is the number of square centimeters in the area of the rectangle?

    asked by G on March 23, 2015
  4. Algebra

    A rectangle has dimensions in feet as shown in the figure it is 2x +5 And one side is 8. I need to write an expression for the area of the rectangle. B. Find the area of the rectangle, in sq.ft. if x=3 C. Find the value of x if

    asked by Shane on October 3, 2016
  5. Math

    Find the Maximum area for the given perimeter of a rectangle. State the length and width of the rectangle. 28 inches Well, finally a calculus problem. Ok, we know that the area for a rectangle is A=l*w and the perimeter is

    asked by l on August 31, 2006
  6. calculus

    Given the area of a rectangle is A = bh, and assuming the rectangle is open on one side, perimeter b + 2h = 40, what formula will maximize the area of the rectangle

    asked by bunnybud on June 27, 2016
  7. Algebra

    Top of the rectangle is 2x+5 right hand side is 5. Write an expression for the area of the rectangle. Then find the area of the rectangle in square feet if x=3. Then I need to find the value of x if the area of the rectangle is

    asked by Kimmy on October 3, 2016
  8. math

    the length of a rectangle is 5cm ...the area of a rectangle is the same as that of a square whose is side measures 4cm..find the width of a rectangle

    asked by Ammon on January 9, 2013
  9. math

    The area of a rectangle is 532 square units. Find the length and the width of the rectangle. One side of the rectangle is x+5 and the other is x-4

    asked by annaya on August 6, 2013
  10. Geometry

    The point of intersection of the diagonals of a rectangle is 4 cm further away from the smaller side than from the larger side of the rectangle. The perimeter of the rectangle is equal to 56 cm. Find the lengths of the sides of

    asked by Anonymous on April 10, 2017
  11. math

    The point of intersection of the diagonals of a rectangle is 4 cm further away from the smaller side than from the larger side of the rectangle. The perimeter of the rectangle is equal to 56 cm. Find the lengths of the sides of

    asked by Anonymous on April 9, 2017

More Similar Questions