Well if he is filling one 3/4 quart bottle, then he must fill his measuring cup 3 times, so just multiply it by 5, and you have 15.
David needs to fill the measuring cup 15 times.
Hello,
sin² x-cos² x=sin² x-(1-sin² x)=2sin² x-1
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The base should be 4.
Area=1/2* b *h
4*7=28/2=14.
