Estimate each sum or difference by replacing each fraction with 0, ½ or 1. Remember to use a number line to help you with this 8/15 + 2/5 = ___ + ___ = and 17/21 - 2/10 = ___ - ___ = i need help asap

Florence price's brownies and more sells all types of cookies and pastries. on tuesdays, they markdown all brownies 75% to a sale of $1.50 a dozen. find the selling price and the markdown of a dozen brownies.

Which statement explains the relationship between corresponding terms in the table?

The angle of depression from the top of the tree to the tip of the shadow is 25°. find the height of the tree to the nearest tenth. a. 16.8 feet b. 18.2 feet c. 23.4 feet d. 39.7 feet