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Montano1993 [528]
3 years ago
10

Factorise y^2 - 16 (y squared)

Mathematics
2 answers:
cricket20 [7]3 years ago
8 0

y^2-16=y^2-4^2=(y-4)(y+4)\\\\\text{used}\ a^2-b^2=(a-b)(a+b)

Mila [183]3 years ago
3 0
Sqrt(y^2) = y
sqrt(16) = 4
-4y + 4y = 0
The answer is
(y-4)(y+4)
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A triangle with vertices at A(0,0), B(0,4), and C(6,0) is dilated to yield a triangle with vertices at A(0,0), (B(0,10), and C (
dezoksy [38]

The required scale factor for the dialed triangle is given by SF= 6.28

A triangle with vertices at A(0,0), B(0,4), and C(6,0) is dilated to yield a triangle with vertices at A(0,0), (B(0,10), and C (C(15,0).

<h3>What is scale factor?</h3>

The scale factor is defined as the ratio of modified change in length to the original length.

Since, the height and base of the triangle is y coordinate of B and x coordinate of c is given by 4, 6
Area of triangle =1/2(base x height)
                         = 1/2 (4 x 6)
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Now, scale factor(SF) = area of dilated triangle \ area of triangle
SF = 30/4.8
SF = 6.25

Thus, the required scale factor is SF = 6.25

 

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(x + y + 2)(y + 1)<br> Solve
RideAnS [48]

Hello there! We are given the following equation and want to simplify it:

(x+y+2)(y+1)

First, let's use the Distributive Property:

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For this step, we are going to let:

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After applying this version of the Distributive Property, we are given the equation:

(y)(x+y+2)+(1)(x+y+2)

We're going to use the distributive party again, but a slightly different version that's almost the same as first:

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Using this on both terms of the equation changes the equation to:

(xy+y^2+2y)+(x+y+2)

Now, we just remove the parenthesis and combine like terms

y^2+3y+xy+x+2

This should be your answer. Let me know if you need any clarifications, thanks!

~ Padoru

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