3 years ago

The function f(x) = 3x² + 12x +11 can be written in

Mathematics

1 answer:

Viktor [21]3 years ago

6 0

Answer:

3) f(x) = 3(x + 2)^2 - 1.

Step-by-step explanation:

f(x) = 3x² + 12x +11

f(x) = 3(x^2 + 4x) + 11 Completing the square:

f(x) = 3[(x + 2)^2 - 4] + 11

f(x) = 3(x + 2)^2 -+3*-4 + 11

f(x) = 3(x + 2)^2 - 12 + 11

f(x) = 3(x + 2)^2 - 1.

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If the radius is 18 cm and the angle at centre of circle is 120° then the

PolarNik [594]

The area of a sector is 339.336 cm²

The area of a sector is defined to be as the region of space bounded by a boundary from the center of the circle.

It can be determined by using the formula:

$\mathbf{A = \dfrac{\theta }{360}\times \pi r^2 }$

Given that;

Radius r = 18 cm
Angle θ = 120°

Then. the area of the sector can be calculated as:

$\mathbf{A = \dfrac{120}{360}\times \pi (18)^2 }$

$\mathbf{A = \dfrac{1}{3}\times 3.142 \times 324 }$

A = 339.336 cm²

Learn more about the area of a sector here:

brainly.com/question/7512468?referrer=searchResults

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2 years ago

Michael drives 143 km from town A to town B in 2 hours 36 minutes. He then drives from town B to town C at the same speed and it

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To town b. Urban dictionary is a good way to add

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3 years ago

Get it right and ill paypal 25$ if ur fast

Lady bird [3.3K]

ight what do i gotta answer tho

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3 years ago

Question 5 (1 point)

aleksley [76]

Answer:

A = x^2 + 5x - 14

Step-by-step explanation:

A = L × W

A = (x+7) × (x-2)

A = x^2 + 7x - 2x - 14

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3 years ago

Choose the answer that correctly simplifies the equation: 3 x (6 x 7 – 2.5 x 4)

Andre45 [30]

3 x (6 x 7 – 2.5 x 4)
=3 x (42-10)
=3 x 32
=96
answer D) 96

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3 years ago

Read 2 more answers