Lucas will get to soccer practice around 3:45
The train will take 16 seconds to pass <em>completely</em> through a 300 meter tunnel.
Let suppose that the train moves itself at <em>constant</em> velocity, the vehicles needs to cover the tunnel length () and its length (), both in meters, to pass through the tunnel, the time taken by the train () is described by the following kinematic formula:
(1)
Where is the train velocity, in meters per second.
If we know that , and , then the time taken by the train is:
The train will take 16 seconds to pass <em>completely</em> through a 300 meter tunnel.
To learn more on uniform motion, we kindly invite to check this verified question: brainly.com/question/12920060
We are given this:
First step is to get rid of brackets. There is no sign in front of first brackets, so we do not change the sign. In front of second brackets there is negative sign so we need to change sign for each term inside of those brackets.
Next step is to group terms with same exponent in descending order.
Now we add or substract terms with same exponent.
Standard form means ordering terms in a descending order of an exponent.
Answer:
B. 12cm
Step-by-step explanation:
We can double check by plugging in the number. However, the question trys to trick you, by giving you the diametre, but in order for the formula to work (V=4
/3πr^3), we will divide the diametre by 2 (12 ÷ 2= 6),
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Once we do that, we can double check, when you plug in your numbers your answer will be around 900 (904.78, to be exact, but the question asks for approximate diamtetre).
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Have a good day :)
Answer:
Step-by-step explanation:
Given
See attachment
Required
Find x
To solve for x, we make use of: