Answer:

Step-by-step explanation:
Let's calculate the answer to the second parenthesis. Just multiply throughout to get -8xyz. Then, multiply the first parenthesis by the second. Multiply the constants (-8 and 2) first to get -16, multiply the x's together to get x^2, the y's together to get y^2, and the z's together to get z^2. Put it all together to get
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79% = 0.79= 79/100
(not sure if this is what you meant?)
Answer: A
Step-by-step explanation: Just sreach it up BURH
Answer: 50x+30y+5z= 690
40x+15y+5z= 620
45x+10y+5z= 510
Step-by-step explanation: The first equation to find units of wood, the second is for the units of fabric, and the third is for the units of stuffing.
Since one kilometer is equal to about 0.621 miles, a runner travels 3.105 miles in a five-kilometer race.