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wolverine [178]
3 years ago
6

Write a quadratic function with a vertex at (-9,13).

Mathematics
2 answers:
Lorico [155]3 years ago
5 0

Answer:

y = x² + 18x + 94

Step-by-step explanation:

The equation of a parabola in vertex form is

y = a(x - h)² + k

where (h, k) are the coordinates of the vertex and a is a multiplier

Here (h, k) = (- 9, 13) and letting a = 1, then

y = (x + 9)² + 13 ← expand (x + 9)² using FOIL

   = x² + 18x + 81 + 13

   = x² + 18x + 94

Anarel [89]3 years ago
4 0
Y = (x+9)^2+ 13

Hope that helps.
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Answer:

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Step-by-step explanation:

To find the total amount after 3 years, we can use the formula for compound tax:

P = Po * (1+r/n)^(t*n)

where P is the final value, Po is the inicial value, r is the rate, t is the amount of time and n depends on how the tax is compounded (in this case, it is semi-annually, so n = 2)

For our problem, we have that Po = 5000, r = 12.3% = 0.123, t = 3 years and n = 2, then we can calculate P:

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3 years ago
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Answer:

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Step by step explanation:

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Step-by-step explanation:

The answer is option b.

Explanation in the pic.

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Step-by-step explanation:

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