The speed of light is about 1.86 x 10^5 miles per second. About how many far does light travel in 68 seconds?
1 answer:
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Answer:
Inequality Form:
x<7
Interval Notation:
(−∞,7)
Step-by-step explanation:
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Elimination Method
If we multiply the equation 3 by (-1) we obtain this:
If we add them we obtain 0, therefore there are infinite solutions. So, let's write it in terms of Z
1. Using the 3rd equation we can obtain X(Y,Z)
2. We can replace this value of X in the 1st and 2nd equations
3. If we simplify:
4. We can obtain Y from this two equations:
5. Now, we need to obtain X(Z). We can replace Y in X(Y,Z)
6. If we simplify, we obtain:
7. In conclusion, we obtain that
(X,Y,Z) =