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  1. D

    Circles and triangles

    In my solution, first circle is 10 then the second is 5. after that, I used s = a/(1-r). a=25 since 5 will be squared and r=1/4. So my solution is A = pi[10^2 + 5^2 +25/(1-1/4). so my answer becomes 475/3 pi.
  2. D

    Circles and triangles

    Homework Statement Please see the attached figure The radius of the biggest circle is 10. The required is the sum of all circles and the sum of all triangles in the figure. There is an infinite number of circles and triangles. My answers are: for circle: 475/3 pi for triangle: 175/2...
  3. D

    Sides of triangle

    The given is an oblique triangle. Find the length of the sides of that triangle.
  4. D

    Sides of triangle

    Homework Statement how can i find the length of an oblique triangle given the 3 altitudes (the line drawn perpendicular from a point of the triangle to the opposite side). I have no idea on how to solve it. Homework Equations The Attempt at a Solution
  5. D

    Quadratic Equantions and Inequalities

    In number 2, I think you can use synthetic division to get the values of x.
  6. D

    Quadratic Equantions and Inequalities

    Can you show the answers? I'm trying to help
  7. D

    Math Problem About Income

    ok. where is that 1.05 come from?
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    Math Problem About Income

    How do you solve this? There is this kind of question in our test and I don't know how will I do it. You're working in a company. Your starting income is 5000. Every year, the income will increase by 5%. What is your total income on your 25th year in the company?
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