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Katyanochek1 [597]
3 years ago
7

Axis of symmetry of h=-16t^2+20t+6​

Mathematics
1 answer:
eimsori [14]3 years ago
7 0

Answer:

t = \frac{5}{8}

Step-by-step explanation:

Given a parabola in standard form : ax² + bx + c : a ≠ 0

Then the axis of symmetry is

x = - \frac{b}{2a}

h = - 16t² + 20t + 6 is in standard form

with a = - 16 and b = 20, hence

t = - \frac{20}{-32} = \frac{5}{8} ← axis of symmetry

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Parking lot has 121 spots. Ratio of senior to junior is 7 to 4. How many spots go to each grade level?
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              seniors    junior  total
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The way we fill out this chart is that we add the rows and multiply the columns. 

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so now our chart looks like this 
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            seniors    junior  total
                 7              4       11
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so seniors get 77 spaces 
and juniors get 44 spaces. 

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