Proportions

1. 6.2 proportions
November 26, 2013
Solve.
Simplify.
1. 4x = 52
3. 36/48
2. 7k = 21
4. 6/10
Bellwork
Objective: solve and use proportions
Jan 30­2:51 PM
HW pg. 292 #5­20
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2. 6.2 proportions
November 26, 2013
Proportion ­ an equality of two rations ­ for example,
6 8 .
=
If two proportions are equal, we can cross multiply.
Jan 30­2:53 PM
HW pg. 292 #5­20
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3. 6.2 proportions
November 26, 2013
Solve x = 4 .
9 6
Jan 30­2:55 PM
HW pg. 292 #5­20
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4. 6.2 proportions
November 26, 2013
Solve 4 = t .
5 55
Jan 30­2:56 PM
HW pg. 292 #5­20
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5. 6.2 proportions
Do the ratios
November 26, 2013
4 and form a proportion? Explain.
10
6 14
Do the ratios
6 and 4 form a proportion? Explain.
9 6
Jan 30­2:57 PM
HW pg. 292 #5­20
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6. 6.2 proportions
November 26, 2013
One hundred nautical miles equals about 115 standard, or statute, miles.
To the nearest mile, how far in statute miles is 156 nautical miles?
Jan 30­2:59 PM
HW pg. 292 #5­20
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7. 6.2 proportions
November 26, 2013
HW pg 292 #5­20
Jan 30­3:00 PM
HW pg. 292 #5­20
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