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3 years ago

Factor the expression. x^2 – x – 42

Mathematics

1 answer:

IgorC [24]3 years ago

5 0

X^2 - x - 42 = x^2 - 6x + 7x - 42 = x( x - 6) + 7(x - 6) = (x-6)(x+7);
The correct answer is a.

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3 years ago

Sage has 3 strip-mats, 3 mats, and 2 units. Tristan has 2 mats, 8 strips, and 5 units. Andre had twice as many strip-mats, mats,

sladkih [1.3K]

The question is an illustration of equivalent equations.

There are 11 units in all

The given parameters are:

Sage

$\mathbf{Strip-mat = 3}$

$\mathbf{Mat = 3}$

$\mathbf{Units = 2}$

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$\mathbf{Mat = 2}$

$\mathbf{Units = 5}$

Andre has twice of what Sage has

So, the total unit is:

$\mathbf{Total = Sage + Tristan + Andre}$

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Because, Andre has twice of what Sage has,

Andre's number of units would be 4

So, we have:

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3 years ago

Dominik [7]

Answer:

1140

Step-by-step explanation:

A decagon has 10 sides so substitute it like this:

(n-2) x 180

(10-2) x 180

8 x 180= 1140

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