Perplex
Content
  • Exponents & Logarithms
  • Approximations & Error
  • Sequences & Series
  • Counting & Binomials
  • Proof and Reasoning
  • Complex Numbers
  • Cartesian plane & lines
  • Quadratics
  • Function Theory
  • Transformations & asymptotes
  • Polynomials
  • 2D & 3D Geometry
  • Trig equations & identities
  • Vectors
  • Probability
  • Descriptive Statistics
  • Distributions & Random Variables
  • Differentiation
  • Integration
  • Differential Equations
  • Maclaurin
Other
  • Review Videos
  • Blog
  • Landing Page
  • Sign Up
  • Login
  • Perplex

    Approximations & Error (Lesson 1/2)

    Rounding Numbers

    1 / 9

    Discussion

    Martha is at the doctor's office for her annual checkup. The diagram below depicts her standing next to a ruler so the doctor can measure her height. Try moving the bottom leveler to measure the very top of Martha's head.

    Powered by Desmos

    (a)

    Can you find Martha's exact height?

    Solution:

    Martha's exact height appears to be about 170.6cm.