The ratio 12:20 because you need it to be equal to 3:5. 3 times 4 which makes 12 so you need to multiply 5 with 4 too
C=10, C=90°, B=30°, A+B+C=180°
A+30°+90°=180°⇒A=60°
cos30°=a/c
cos30°=a/10⇒a=cos30°*10
a<span>≃8.6602
c²=a²+b²⇒b²=c²-a²
b²=10²-8.6602²⇒b²=25
b=5
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Well if the interest is compounding yearly at 3.5% the amount would be $25,130.23
The vertical number line in a Cartesian coordinate system is called the vertical axis.
Good luck :)
All but the first simplify to something rational.