What are the steps to prove z+z+z+z=4z

What is the slope of any line parallel to the line 8x+9y=3 in standard (x, y) coordinate plane?

If necessary, use / for the fraction bar. Jeff needs to buy food and medication for six cats and one dog. The cost of food and medication for a cat is $5 less than two-thirds of the cost of food and medication for a dog.

One liter of paint covers 100 square feet. How many gallons of paint does it take to cover a room whose walls have an area of 800 square meters? Round your answer to the nearest whole gallon.

A 42" diameter table needs a tablecloth that hangs off the edge 8". What is the area of the tablecloth? Use 3.14 for π.

A suit is on sale for 27% off. The sale price is $438. What is the regular price?

Evaluate the expressions with grouping symbols: 7 (13 - 8)

If 153=2 (z+z) n153=2 (z+z) n153, equals, 2, left parenthesis, z, plus, z, right parenthesis, n, then what is the value of 2n (2z) - 1932n (2z) - 1932, n, left parenthesis, 2, z, right parenthesis, minus, 193?

Put the following list of numbers in order from smallest to largest. 1. first E. 29.94 2. second D. 28.15 3. third C. 27.068 4. fourth B. 28.08 5. fifth A. 28.3

A carpenter cut a board 334 feet long to make a shelf. Before he cut the board, it was 1012 feet long. How long is the remaining piece of the board? Enter your answer, as a mixed number in simplest form,

Multiples of 20,25 and 40