If sin 20 degree=a and cos20 degree=b then which of the following represents the correct value of sin 70 degree in terms of a and/or b? 1) a+b 2) a 3) b 4)a-b

Naomi’s parents want to have 50,000, saved for her college education, if they invest 20000 today and earn 7% interest compound annually, about how long will it take them to save 50 thousand

The slope of the line passing through the points (2, 7) and (-4, 8) is

Ashop has a sale that offers 20% off all prices. on the final day they reduce all the sale prices by 25% linz buys a ratio on the day. work out the overall percentage reduction on the price of the ratio