11. prob solving all equations 2016.notebook

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11. Prob solving all equations 2016.notebook 1 May 06, 2016 1. How many real roots does the equation 3.1x 2 – 7.6x + 4.7 = 0 have? (Do not find the roots) 2. A garden measuring 12 meters by 16 meters is to have a pedestrian pathway installed all around it, increasing the total area to 285 square meters. What will be the width of the pathway?

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Page 1: 11. Prob solving all equations 2016.notebook

11. Prob solving all equations 2016.notebook

1

May 06, 2016

1. How many real roots does the equation 3.1x2 – 7.6x + 4.7 = 0 have? (Do not find the roots)

2. A garden measuring 12 meters by 16 meters is to have a pedestrian pathway installed all around it, increasing the total area to 285 square meters. What will be the width of the pathway?  

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11. Prob solving all equations 2016.notebook

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May 06, 2016

Quadratic ApplicationsQuadratic problems can basically ask you one of two main questions:1)  Find the vertex

– words like max/min, highest/lowest, most/least etc

« how??» Factored form ­

» Standard form ­ 

» Vertex form ­

2)  Solve the equation for one of the variables> you will be given a value for one variable and have to solve 

for the other

> sub in the known value and solve

EASY type ­  given the independent variable (x, time, etc) ­ plug in and calculate

HARDer type ­ given dependent variable (y, height, profit etc)­ plug in, set equation = 0 and solve

« how?» Factored form ­

» Standard form ­

» Vertex form ­

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May 06, 2016

Picture Frame Problems

I want to build a deck around my pool that is the same width all the way around. If the pool is 8' by 10' and I have enough wood for 280 square feet of deck, how wide can I build it?

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May 06, 2016

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May 06, 2016