Write a subtraction expression that has a value of -1
something like Ex. -5 - (-4) = -1

Tracy solved the following problem. which of the statements is true? 9 ÷ 3 + 6 × 2 3 + 6 × 2 9 × 2 18 her answer is correct. her answer is incorrect. she should have multiplied before dividing. her answer is incorrect. she should have multiplied before adding. her answer is incorrect. she should have added before dividing.

Acar travels at an average speed of 56 miles per hour. how long does it take to travel 196 miles

Amachine part consists of a half sphere and a cylinder, as shown in the figure. the total volume of the part is π cubic inches.