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2 years ago

Which set of lengths could not form a triangle? Don´t guess and explain with detailed reasoning.

Mathematics

2 answers:

Ne4ueva [31]2 years ago

7 0

Answer:

8, 12 ,5 I was taking a assignment with that question.

Step-by-step explanation:

Solnce55 [7]2 years ago

4 0

8,12,5 i did this assignment

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Why is a cube root of a negative always negative?

ololo11 [35]

Because if you multiply a negative by a negative, it is positive, right? So, in this instance it is cubed, which means that the number is multiplied by itself 3 times, so the positive is multiplied by the negative, which makes it negative

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2 years ago

Let f(x) = -4x - 2 and g(x) = 5x - 6. Find f*g and state its domain.

elixir [45]

Answer: The answer is (c) $-20x^2+14x-12;\textup{ all real numbers.}$

Step-by-step explanation: Given that there are two functions f and g, defined by

$f(x)=-4x-2,\\\\g(x)=5x-6.$

We are to find f*g and also its domain.

$(f*g)(x)\\\\=f(x)g(x)\\\\=(-4x-2)(5x-6)\\\\=-20x^2+24x-10x-12\\\\--20x^2+14x-12.$

Also, its domain will be all real numbers, since the function f*g is defined at all 'x' in real numbers.

Thus, the correct option is

$-20x^2+14x-12.$

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2 years ago

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beks73 [17]

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3 years ago

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Monica [59]

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2 years ago

How many 1 2/5 foot pieces of ribbon can be cut from a piece of ribbon that is 35 feet long?

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It should be 49 feet long I’m not sure!

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2 years ago