Which expression is equivalent to 4x – 7 – 4y + 18 – x – y? a. 4x – 4y + 11 b. 3x – 5y + 11 c. 5x – 3y + 11 d. –2xy + 11

The midpoints of the sides of the large square are joined to form a smaller square. what is the area of the smaller square

How many liters of peroxide should be added to 12 liters of an 8% peroxide solution so that the resulting solution contains 16% peroxide?   original added new amount of peroxide 0.96 liters x 0.96 + x amount of solution 12 liters x 12 + x 0.18 liter 1.14 liters 1.92 liters 2.10 liters

What is the sum of the measures of the interior angles of an octagon