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OpenStudy (anonymous):
If the base of a rectangle is increased by 30% and the altitude is decreased by 1/5 what is the change of the area?
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OpenStudy (anonymous):
try substituting the new values into A=b*h
OpenStudy (anonymous):
ie if we want to see what effect a change in b has on A put in the new value for b (1.3b, in this case) and see what the change in A is...
OpenStudy (anonymous):
you there?
OpenStudy (anonymous):
Why 1.3
OpenStudy (anonymous):
30% = 0.3. For a 30% increase you are adding 30% to the 100% that you started with, so 130% = 1.3
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