Answer= D
1package 7 packages
____________=____________
75 envelopes x envelopes
1x=525
divide both sides by 1
x=525 envelopes
5^2 + x^2=8^2
25+x^2=64
X=6.2
3(x+2)=7 X=1/3 Because 3(x+2) would simplify to 3x+6=7 and then its a two-step equation
<span>you know the measure of AC that is 4 and the measure of AB that is 4. Then you do the theorem of Pythagoras 4 squared + 4 squared = hypotnuza (CB)
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then + all sides
