The vertex form of the equation of a parabola is a y = (x+ 3)^2+53. What is the standard form of the equation?

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Aclass consists of 55% boys and 45% girls. it is observed that 25% of the class are boys and scored an a on the test, and 35% of the class are girls and scored an a on the test. if a student is chosen at random and is found to be a girl, the probability that the student scored an ais

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees