angelate angelate

24-07-2020
Mathematics

contestada

Find the axis of symmetry and vertex for the parabola y=−5x2+30x+7.

Respuesta :

valerieulbrich valerieulbrich

31-07-2020

Answer:

axis of symmetry x=3

vertex (3, 52)

Step-by-step explanation:

y = -5x² + 30x + 7

x = -b/2a = -30/2(-5) = -30/-10 = 3

y = -5(3)² + 30(3) + 7

y = -45 + 90 + 7

y = 52

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