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3 years ago

10

A photograph measuring 3 inches by 2.5 inches is to be enlarged so that the smaller side, when enlarged, will be 8 inches. How l

ong will the enlarged longer side be?

1 answer:

klasskru [66]3 years ago

4 0

9.6 hope this helped :)

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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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What is the equations of the line passing through points (-3,7) and (9,-1)?

diamong [38]

Answer:

y = -2/3x + 5 or A.

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Which scatterplot shows a negative correlation? Multiple-choice answer

aliina [53]

The one the points down shows a negative correlation. a positive correlation points up

your answer here is d

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Casey is completing an experiment that requires 300 mL of potassium chloride (KCl) at a concentration of 0.2 M. But Casey's lab

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What you first need to do is make an equation. Then plug that equation into photomath and you get your answer

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3 years ago

Find m< AFE and include working out.

andreyandreev [35.5K]

Answer:

∠ AFE = 80°

Step-by-step explanation:

Since BD is a straight line , then

∠ AFB + ∠ AFE + ∠ EFD = 180°, that is

50° + ∠ AFE + 50° = 180°

100° + ∠ AFE = 180° ( subtract 100° from both sides )

∠ AFE = 80°

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3 years ago