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2 years ago

15

What statement about a rhombus is always true?

2 answers:

JulsSmile [24]2 years ago

7 0

I think that the statement that is true is

A. a rhombus is a parallelogram and has for equal sides.

I think that is right because A rhombus is just like a square but slanted kind of and a square has 4 equal sides and is also a parallelogram. So from what I have learned that is right. I hope that helped.

Harlamova29_29 [7]2 years ago

6 0

I'm going to say A and B

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Answer:

Second option: $(xy+x)(xy+x)$

Third option: $(2x-3)(-3+2x)$

Fifth option: $(4y^2+25)(25+4y^2)$

Step-by-step explanation:

By definition, a perfect square trinomial can be obtained by squaring binomials.

Then:

$(a+b)^2=(a+b)(a+b)=a^2+2ab+b^2\\\\(a-b)^2=(a-b)(a-b)=a^2-2ab+b^2$

Knowing this, to obtain a perfect square trinomial, the binomials that you multiply must be equals.

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$(2x-3)(-3+2x)=(2x-3)^2=(2x)^2-2(2x)(3)+3^2=4x^2-12x+9$

$(4y^2+25)(25+4y^2)=(4y^2+25)^2=(4y^2)^2+2(4y^2)(25)+25^2=16y^4+200y^2+625$

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