Which of these four sets of side lengths will form a right triangle? Set 1: v2cm, 9 cm, V7 cm

Set 2: 2 in., v5 in., 9 in.

Set 3: 6 mm, 2 mm, 10 mm

Set 4: v2 ft, 7 ft, 3 ft

Set 1

Set 2

Set 3

Set 4​

The hypotenuse of an isosceles right triangle is $14\sqrt 2$. what is the area of the triangle?

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items