The following steps are used to rewrite the polynomial expression (x + 4y + 2)(x – 7y). Step 1: x(x - 7y) + 4y(x - 7y) + z(x – 7y)
Step 2: x2 - 7xy + 4yx - 28y2 + zx - 7zy
Step 3: x? - 7xy + 4xy - 28y2 + xz - 7yz
Step 4: x2 - 3xy - 28y2 + xz - 7yz
Identify the property used in each of the steps:
Step 1:
distributive property

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters .

Acompany manufactures large valves, packed in boxes. a shipment consists of 1500 valves packed in 75 boxes. each box has the outer dimensions 1.2 x 0.8 x 1.6 m and the inner dimensions 1.19 x 0.79 x 1.59 m. the boxes are loaded on a vehicle (truck + trailer). the available capacity in the vehicle combination is 140 m3. each valve has a volume of 0.06 m3. - calculate the load factor on the box level (%). - calculate the load factor on the vehicle level (%). - calculate the overall load factor (%).

Evaluate the expression. (9 + 5)(3 + 2)0