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6 months ago

F(x) = 3x² + 9x – 16 Find f(-8)

Mathematics

1 answer:

Nezavi [6.7K]6 months ago

7 0

Answer: 104

Step-by-step explanation:

$f(-8)$ represents $f(x)$ evaluated at $x=-8$ .

$f(-8)=3(-8)^2 +9(-8)-16\\\\=192-72-16\\\\=120-16\\\\=104$

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Use the Pythagorean Theorem to solve for the missing side length. Round to the nearest tenth if necessary.

Ede4ka [16]

Answer:

B= 6

Step-by-step explanation:

pythagorean theorem formula is a² + b² = c²

so: 8² + b² = 10²

then: 64 + b² = 100

subtract 64 from both sides to get b²= 36

square root 36 and you get 6 for b

answer: B= 6

8 0

2 years ago

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Ne4ueva [31]

Answer:

$y = \sqrt{85}$

Step-by-step explanation:

(11)²=(6)²+ (y)²

121=36 +(y)²

y² =121 –36

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2 years ago

What is BC ?<br><br> Enter your answer in the box.

stiks02 [169]

Mathematically it would be 8 since BE=CE and CE=4.

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3 years ago

Please help with geometry

Bumek [7]

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4 0

2 years ago

Sherry is driving 390 miles to visit The gateway arch in St. Louis. She drives at an average rate of 65 miles per hour. Explain

grandymaker [24]

Answer:

t = 6 s

Step-by-step explanation:

Given that,

Sherry is driving 390 miles to visit The gateway arch in St. Louis.

She drives at an average rate of 65 miles per hour.

We need to find the amount of time it will take Sherry to get to the arch. Let the time is t.

Speed = distance/time

$t=\dfrac{d}{v}\\\\t=\dfrac{390}{65}\\\\t=6\ h$

Hence, it will take 6 hours to get to the arch.

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2 years ago