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aniked [119]
3 years ago
7

Can somone answer number 12, I really need it bad, please help .

Mathematics
2 answers:
lina2011 [118]3 years ago
7 0

Answer:

D. f(2)= -24

Step-by-step explanation:

To solve this problem, we want to find what f(x), or y is, when x is equal to 2.

f(x)=3x³-12x²

Therefore, we can substitute 2 in for every x.

x=2

f(2)=3(2³)-12(2²)

Evaluate the exponents first.

2³ is equal to 2*2*2, which equals 8.

2² is equal to 2*2, which equals 4.

f(2)=3(8)-12(4)

Multiply 3 and 8.

f(2)=24-12(4)

Multipy 12 and 4

f(2)=24-48

Subtract 48 from 24.

f(2)=-24

Therefore, the correct answer is D. f(2)= -24

ArbitrLikvidat [17]3 years ago
3 0

Answer:

-24

Step-by-step explanation:

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

f(2) = 3 * (2)^3 - 12 (2)^2

      = 3 (8) - 12 (4)

      = 24 - 48

      = -24

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A rug is to fit in a room so that a border of even width is left on all four sides. if the room is 22 feetby 25 feet and the are
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Find area of the border :
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Area of the room = 22 x 25 = 550 ft²
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Area of the border = 550 - 238 = 312 ft²

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Define y:
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Let the width be y.

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Find area of the border in term of y :
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The area of the border =  22y x 2 + 25y x 2 - 4y² = 94y - 4y²
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7 0
4 years ago
Please help because I have to submit this this week
Kitty [74]

Answer:

67

Step-by-step explanation:

its a 90 degree angle so u have to do 90-23 which equals to 67

4 0
3 years ago
What is 180-90-37 as a degree?
givi [52]

Answer:

53 degrees

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since 180 is a straight line and 90 is half of that, all you need to do is take 37 away from 90 and you get 53

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