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leva [86]
2 years ago
7

Will mark brainliest please help ASAP Complete the square to find the vertex of this parabola x^2+14x-y-14=0

Mathematics
1 answer:
Lynna [10]2 years ago
7 0

Answer:

the vertex is (-7, -63)

Step-by-step explanation:

x^2 + 14x - y - 14 = 0

x^2 + 14x = y + 14 (to isolate the x)

x^2 + 14x + 49 = y + 14 + 49

(x+7)^2 = y + 63

now we convert to vertex form, which is y = a(x – h)2 + k :

(x+7)^2 = y + 63

y = (x+7)^2 - 63

The vertex in vertex form is shown as (h, k) from y = a(x – h)2 + k, so in this case, h = -7 and k = -63. H is the x-coordinate as shown while k is the y-coordinate. Thus, the vertex is (-7, -63)

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Answer:

His parents should invest $15,278.16 to reach this goal ⇒ 4th answer

Step-by-step explanation:

* Lets explain how to solve the problem

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∴ The time for investment is 10 years

- P is the money his parents invest now at 9.5% annual interest,

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∴ The rate is 9.5% per year compounded daily

- The formula of the compounded interest is:

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# r is the rate of interest in decimal

# t is the time of investment

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Step-by-step explanation:

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(40,400*0.75) + 7,125 = 37,425

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