R = 1/2 (r1+r2) what is r2

Compute the sales tax for the prices and rates given below. Price Tax Rate Tax $299 4% $6,750 7% $76.50 5.2% $18.32 3.9% $5.95 6.2% $13.89 4.3% $768.43 3.7% $6.49 5.8% $23.86 7.1% $12.98 3.9%

What is the volume of this prism? 10m, 5m, 3.2m

What math problem can be made that equals 13 using all order of operations? (Parentheses exponents division addition subtraction multiplication)

One salesperson earns $1600 per month. A second salesperson earns $500 plus 5% of their sales. For what amount of sales would the second salesperson earn more than the first?

Colin ties 5 groups of balloons to the fence. There are 3 orange balloons

The opposite of the opposite of 17, or - (-17), is equivalent to which of the following?

In a right triangle, the side opposite angle has length 3.07 meters and the hypotenuse has length 7.89 meters. What is the sine of the angle?

By 203 and 42 thousandths in standard form and expanded form

According to Ms. Hill's blintz recipe, 2 eggs should be used for every 3/4 cup of sifted flour. At this rate, how many cups of sifted flour should be used if 5 eggs are used?

If two angles are obtuse, then they must be congruent? true or false?