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3 years ago

Find the perimeter of the figure:

Mathematics

2 answers:

anzhelika [568]3 years ago

8 0

Answer:

To find the perimeter, just add up the lengths of the each side.

AB = 13 units

BC = 12 units

CA = 5 units

P = 13 + 12 + 5 = 30 units

Oksi-84 [34.3K]3 years ago

3 0

Answer: idk but i could be

29 units

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For the set C= {6,8}, determine n(C).

nasty-shy [4]

Step-by-step explanation:

Hey, there!!

C = {6,8}

n(C) means cardinality of set.

We define cardinality of set as the no. of elements present in set.

It contains 2 no. of elements.

so, its cardinality is n(C) is 2.

Hope it helps...

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2 years ago

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2 years ago

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Which products result in a perfect square trinomial? Select three options.

Kazeer [188]

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.

Therefore, the products result in a perfect square trinomial are:

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

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

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

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3 years ago

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Tiana takes 3 hours to drive to the coast without stopping. How many minutes will it take her to reach the coast if she stops to

nika2105 [10]

3 hours is 180 minutes.

She rested for 20 additional minutes, thus it will take her 200 minutes.

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3 years ago

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