Answer: 3rd one
Rearrange the original equation so it fits the model of : ax^2+bx+c=0
Then use the quadratic formula to find all possible answers.
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Answer:
5
Step-by-step explanation:
6 over 30 simplify it and boom (divide 30 by 6)
Your answer is
![{x}^{2} \div {2} {z}^{9}](https://tex.z-dn.net/?f=%20%7Bx%7D%5E%7B2%7D%20%20%5Cdiv%20%20%20%7B2%7D%20%7Bz%7D%5E%7B9%7D%20)
because the numbers raised to negative powers must be flipped over the divisor to become positive. Then, when multiplying 2 and z, you add their exponents.
Distance=speed x time
so it would be 28 x 6=168