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Percentages - Elementary Maths - Exam, Exams of Elementary Mathematics

Main points of this past exam are: Percentages, Zer Family, Income On Housing, Categories Housing, Spend, Remains, Angles

Typology: Exams

2012/2013

Uploaded on 03/31/2013

parthavi
parthavi 🇮🇳

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171 documents

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Prof. S. Brick Math for Elem Ed II; Exam 1 Math 202
Spring ’04 section 501
Print your name:
Show all of your work, and explain your reasoning.
1. The Zer family spends 40% of their income on housing. They spend 3/4 of what remains
on food. Make up a pie chart with three categories housing,food, and other. Find both
the angles and the percentages.
2. Find the equation through the point (1,4) and parallel to 2y+x= 12. Sketch a graph
showing both lines and the point (1,4).
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Prof. S. Brick Math for Elem Ed II; Exam 1 Math 202

Spring ’04 section 501

Print your name:

Show all of your work, and explain your reasoning.

  1. The Zer family spends 40% of their income on housing. They spend 3/4 of what remains on food. Make up a pie chart with three categories housing, food, and other. Find both the angles and the percentages.
  2. Find the equation through the point (1, 4) and parallel to 2y + x = 12. Sketch a graph showing both lines and the point (1, 4).
  1. A student club has 10 boys and 18 girls in it. A three person committee with at least one girl is to be formed. How many different such committees are possible?
  2. Draw a box and whisker plot for the data 7, 12 , 8 , 19 , 13 , 14 , 10 , 9 , 18.
  1. The speed of sound is 760 mph. If lightning is observed and then thunder is heard t seconds later, explain why d = t/5 is the approximate distance to the lightning strike in miles.
  2. Professor Infinity gives you ten coins and tells you to do an experiment of flipping all ten of them and recording the number of heads. He then tells you to repeat that experiment over and over again, until you have done it one million times. Sketch a possible histogram of your data.
  1. A coin is flipped three times. Find the probability of getting exactly two heads.
  2. Six years ago, Buffy was half the age that Boris will be three years from now. Use algebra to express that relationship. Be explicit.