7+4=11 if that is your question not 100% sure what you are asking.
If you keep the radius the same and double the height, you find that by experimentation with this a few times, doubles your volume as well. That means that instead of 1/3 pi r^2 h, we will have 2/3 pi r^2 h. Your answer B.
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Answer:
-5x(x + 2)
Step-by-step explanation:
<em><u>the key is factoring: </u></em>
-5x² - 10x = -5x × (x) - 5x × (2) {here we notice that -5x is a common factor}
= -5x(x + 2)
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:)
