Philip ran 438 miles yesterday. Michael ran 158 miles yesterday.
2 answers:
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First simplify the expression into polynomial form,
Now factor into,
Which means the solutions are,
and then two complex solutions because determinant of the third factor ,
Hope this helps :)
Answer: Choice C) Star shaped symbol
We can rotate the star symbol 90 degrees to have it line up with its original image. The before and after images would be identical after doing such a rotation. So this figure has rotational symmetry.
The other figures would change if we rotated them some angle x such that , so they do not have rotational symmetry.