Expand then sliplify : 3z (2z +4) + 6z (2z - 5)

1 answer:

4 0

Let's expand first:
$6z^2+12z+12z^2-30z$

Simplify (combine like terms):
$18z^2-18z$
$18z(z-1)$

So, your most simplified answer is 18z(z-1) or 18z²-18z.

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A factory produces 3/4 of a mile of thread every 1/4 of an hour. What is the unit rate of miles of thread per hour?

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Isn’t this 12/4 of a mile of thread every hour? If the factory produces 3/4 of a mile of thread every 1/4 of an hour, then all you need to do is 3/4 x 4. 1/4 is like .25 so to make a whole number, you have to do .25 x4 which makes the whole. I don’t know if my explanation is correct or not but I do believe my answer is. (12/4 is 3)

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Please answer This question...

mestny [16]

Answer:

(2) 4, 7, 9; 2, 5, 6; 1, 3, 8

Step-by-step explanation:

Let's group them based on how many lines they have inside the shape...

0 lines: 4, 7, 9

2 lines: 2, 5, 6

3 lines: 1, 3, 8

Therefore the answer is (2) 4, 7, 9; 2, 5, 6; 1, 3, 8