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zloy xaker [14]
3 years ago
9

A hole needs to be at least 40 feet below ground level. This means it needs to be more than 2 times its current depth.

Mathematics
2 answers:
alexgriva [62]3 years ago
5 0

Answer:

20 feet below

Step-by-step explanation:

Alex Ar [27]3 years ago
3 0

The current depth of the hole is at least 20 feet below ground level.

Inequality is an expression that shows the non equal comparison of numbers and variables.

Let d represent the current depth of the hole.

To be at least 40 feet below ground level, he need more than 2 times its current depth.

2d < -40

d < -20

Hence the current depth of the hole is at least 20 feet below ground level.

Find out more on inequalities at: brainly.com/question/11613554

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Answer:

65 miles per hour

Step-by-step explanation:

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The equation of a parabola in vertex form is

y = a(x - h)² + k

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To obtain this form use the method of completing the square.

Given

f(x) = - 0.6x² + 4.2x + 240 ← factor out - 0.6 from the first 2 terms

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To complete the square

add/ subtract ( half the coefficient of the x- term)² to x² - 7x

f(x) = - 0.6(x² + 2(- 3.5)x + 12.25 - 12.25 ) + 240

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Then

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3 years ago
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Answer:

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