$\sin255^o=\sin(300^o-45^o)=\sin300^o\cos45^o-\cos300^o\sin45^o= \\\\=- \frac{ \sqrt{3} }{2}\cdot \frac{ \sqrt{2} }{2}- \frac{1}{2} \cdot \frac{ \sqrt{2} }{2}=- \frac{ \sqrt{6} }{4} - \frac{ \sqrt{2} }{4}= -\frac{ \sqrt{6}+\sqrt{2} }{4}$

5 0

3 years ago

How long will it take for an investment to triple, if interest is compounded continuously at 4%?

Margaret [11]

3p=pe^tr,,3=e^0.04t ,,then use log to find t

3 0

2 years ago

Julio spent $40 and now has no money left. He had _before his purchase

ser-zykov [4K]

Answer:

$40

Step-by-step explanation:

If he spent $40 and has none left that means he currently has $0.

If you subtract $40 - b = $0

b = $40

7 0

2 years ago