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kow [346]
3 years ago
14

Which of the binomials below is a factor of this trinomial? 3x2 + 18x - 21

Mathematics
2 answers:
Eddi Din [679]3 years ago
7 0
The answer is going to be: 3 • (x + 1) • (x - 7)
lutik1710 [3]3 years ago
3 0
I hope this helps you



3 (x^2+6x-7)


3 (x+7)(x-1)


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A rectangle with a length of L and a width of W has a diagonal of 10 inches. Express the perimeter P of the rectangle as a funct
KatRina [158]
<h2>Answer:</h2>

The expression which represents the perimeter P of the rectangle as a function of L is:

          Perimeter=2(L+\sqrt{100-L^2})

<h2>Step-by-step explanation:</h2>

The length and width of a rectangle are denoted by L and W respectively.

Also the diagonal of a rectangle is: 10 inches.

We know that the diagonal of a rectangle in terms of L and W are given by:

10=\sqrt{L^2+W^2}

( Since, the diagonal of a rectangle act as a hypotenuse of the right angled triangle and we use the Pythagorean Theorem )

Hence, we have:

10^2=L^2+W^2\\\\i.e.\\\\W^2=100-L^2\\\\W=\pm \sqrt{100-L^2}

But we know that width can't be negative. It has to be greater than 0.

Hence, we have:

W=\sqrt{100-L^2}

Now, we know that the Perimeter of a rectangle is given by:

Perimeter=2(L+W)

Here we have:

Perimeter=2(L+\sqrt{100-L^2})

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Help asap giving Brainlist!!!
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I'm not sure exactly what this means, but I think I have an idea.

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