Answer:
answer B
Explanation:
B.(1) Rockets work on the principle of action and reaction, which is also known as Newton's third law of motion. (2) The engines of the rocket generate hot gases that fire backward. (3) An equal reaction is produced, and the rocket is pushed into space. (4) Most of the rocket’s fuel is used up in this initial stage during which an escape velocity is generated. (5) This escape velocity is required for the rocket to defy gravity and reach outer space.
As you can see in line 4 it talks about velocity, then again in line five it talks about the escape in velocity. plus i got it right for study island ;)
Answer: a. A prerequisite must be taken before another course; a corequisite and another course must be taken together.
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Explanation:
A prerequisite to calculus is precalculus since you must take precalculus before calculus. The "pre" indicates "before".
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As for corequisite, you could have a biology course and a lab that goes with it. Though usually labs are considered part of the class. It will depend on how the course is structured.
Another example of corequisite classes could be taking a statistics course focused on psychology majors and also some other psychology course dealing with sampling techniques.
The "co" means "together".
<span>Okay, so to make this sentence more interesting we have to add more detail. Watch:
Before:
I am swinging.
After:
I am swinging on my big green porch swing with fluffy cushions, listening to the birds chirping and letting the sun hit my face and warm my entire body as I lean my head back and take a deep breath of air that smells of flowers and fresh cut grass.
<span>Does that make sense?</span></span>
Answer:
B. As convenient but vulnerable in emergencies.
Explanation:
because the author states that "when it works, cashless society is wonderful, i enjoy not having to carry around cash when i travel" and also "cash is good in emergencies".
The answer is Central
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