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Download August 25, 2011 Welcome to Ms. Wu`s math class!
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Feb. 2 Ms. Wu thinks you’re smart. No really, I mean it. Ok, but smart people still need to practice, so grade your homework already! 1) Get out HW 3.10 and start grading it. 2) Retrieve manila folder, adhere quicky quiz into notebook, and correct if needed._________________________________ My expectation is that you have already checked the odd-problems. Mycoplasma bacteria • a genus of bacteria that lack a cell wall (unaffected by many antibiotics) •One of the smallest known cells • the radius is about .0000000125 m • the radius of a red blood cell is .0000045m Find the ratio of the radius of a red blood cell to the radius of Mycoplasma bacteria. What does the ratio tell you? Scientific Notation • A number written in scientific notation is in the form c x 10n, where 1 < c < 10 and n is an integer. – Diameter of the solar system: 118,000,000,000 km. – Diameter of a silver atom: 0.00000000000025 km. Try it out! • The speed of light is 3 x 10 8 meters/second. If the sun is 1.5x 1011 meters from earth, how many seconds does it take light to reach the earth? Express your answer in scientific notation. Simplifying Exponents Practice Solutions
