Subtracting a negative number gives the same answer as adding that number. So, 10-(-2)=10+210−(−2)=10+2.
16 - _ = 23
Which one of the following is the missing number in the calculation?

Mary works for a company that ships packages and must measure the size of each box that needs to be shipped. mary measures a box and finds the length is 7 inches, the width is 14 inches, and the height is 15 inches. what is the volume of the box? [type your answer as a number.]

Evaluate-27 ^4/3/8 a) - 81/16 b) 81/16 c) 16/81

The vertex of this parabola is at (-2,-3). when the x-value is -1, the y-value is -5. what is the coefficient of the squared expression in the parabola's equation?