B/h=3/8
8b=3h
8/3b=h
P=2(h+b)
P=138.6
138.6=2(h+b)
divide both sides by 2
69.3=h+b
suub (8/3)b for h
69.3=(8/3)b+b
times both sides by 3 to get rid of fraction
207.9=8b+3b
207.9=11b
divide both sides by 11
18.9=b
sub back
(8/3)b=h
(8/3)18.9=h
50.4=h
area=height times base
aera=50.4 times 18.9
aera=952.56 cm²
1. base=18.9 cm
2. height=50.4 cm
3. area=952.56 cm²
Letter D
A = 135°
B = 30°
cosAcosB - sinAsinB = cos(A+B)
cos(135°+30°)
cos(165°)
<span>Drake can meet his $750 planned savings goal with either concept. After 4 weeks, he was $30 less than where he planned to be ($450 instead of $480). If he simply added $250 after two more weeks, he would be at $720 instead of $750, and would have to wait one more week to take the class. Conversely, if he added $15 to the next two weeks' savings, he would recoup the $30 he pulled out of the savings in those two weeks and would be back on the path to being able to take the course at the end of the 6-week period as originally planned.</span>
-4, -1, 1, 3, 3.9, 3.999,