You are correct. You multiply both sides of the second equation by -9 so that the y turns into -9y. That way you add it to the +9y in the first equation to get 0y (the y terms cancel afterward). Nice work.
One ton is 2000LBS, so 3/4 would be 1,500LBS
Answer:
Kim performed a reflection across the y-axis to create rectangle A'B'C'D'.
Step-by-step explanation:
If you look at the picture, you can see that ABCD jumps over the y-axis as it turns into A'B'C'D'. Also, notice that A' and B' stay as the ones close to the y-axis and C' and D' stay as the ones farther from the y-axis. This means the a Reflection across the y-axis was performed.
The value of the derivative at the maximum or minimum for a continuous function must be zero.
<h3>What happens with the derivative at the maximum of minimum?</h3>
So, remember that the derivative at a given value gives the slope of a tangent line to the curve at that point.
Now, also remember that maximums or minimums are points where the behavior of the curve changes (it stops going up and starts going down or things like that).
If you draw the tangent line to these points, you will see that you end with horizontal lines. And the slope of a horizontal line is zero.
So we conclude that the value of the derivative at the maximum or minimum for a continuous function must be zero.
If you want to learn more about maximums and minimums, you can read:
brainly.com/question/24701109
In abstract algebra and formal logic the distributive property of binary operation generalizes the distributive law from elementary algebra
