Answer:
6.67 m/s
Step-by-step explanation:
Do you mean something like y<21?
In this question, you know that the machine packs
![\frac{2}{3}](https://tex.z-dn.net/?f=%5Cfrac%7B2%7D%7B3%7D)
of a box every
![\frac{1}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7D)
of a minute. Since it is constant, you simply have to double the half a minute to a full minute and then also double the rate to get
![\frac{4}{3}](https://tex.z-dn.net/?f=%5Cfrac%7B4%7D%7B3%7D)
boxes packed per minute. And
![\frac{4}{3}](https://tex.z-dn.net/?f=%20%5Cfrac%7B4%7D%7B3%7D%20)
is equal to
Area of a square: s^2
Because we know the length of one side, we can multiply it by itself to find the area.
(3x - 6)(3x - 6)
9x^2 - 18x - 18x + 36
Combine like terms.
9x^2 - 36x + 36
<h3>The correct answer is A, or the first answer. </h3>
(3*4)+(1*7)/7*4 = 12+7/28 = 19/28
your answer is 19/28