clare wants a to mail a package that weighs 4 1/2 pounds. what could be its weight in kilograms explain

If you could answer these your a life saver

If the value of cos330°is√3/2 then find cos 165°.

The value, v, of kalani’s stock investments over a time period, x, can be determined using the equation v=750(0.80)^-x. what is the rate of increase or decrease associated with this account? 20% decrease 20% increase 25% decrease 25% increase