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4 years ago

What would BI be? I don’t get it

Mathematics

1 answer:

dedylja [7]4 years ago

3 0

Answer:

Step-by-step explanation:

Of I is the incenter then : AI, BI, and CI would be equal

if lengths are equal we can make an equation to solve the length of BI

AI = BI ➡ 3x+7 = 5x-11 ➡ 2x = 18 ➡ x = 9

replace x with 9

5x-11 ➡ 5×9-11 = 34

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Artyom0805 [142]

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4 (4x - 1)

B) Answer:

-5x ( 2 + x )

C) Answer:

6 (5y - 4x)

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3 years ago

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3 years ago

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Simplify the expression by combining like terms.

Katyanochek1 [597]

Answer:

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Step-by-step explanation:

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3 years ago

Find the product. 8y 3(-3y 2)

S_A_V [24]

For this case we must find the product of the following expression:

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5 0

3 years ago

are any two regular polygons similar. The area of the smaller figure is about 390 cm^2. choose the best estimate of the area of

galben [10]

Answer:

The best estimate of the area of the larger figure is $693\ cm^{2}$

Step-by-step explanation:

step 1

Find the scale factor

we know that

If two figures are similar, then the ratio of its corresponding sides is equal to the scale factor

Let

z----> the scale factor

x-----> the corresponding side of the larger figure

y-----> the corresponding side of the smaller figure

$z=\frac{x}{y}$

we have

$x=12\ cm$

$y=9\ cm$

substitute

$z=\frac{12}{9}=\frac{4}{3}$ -----> the scale factor

step 2

Find the area of the larger figure

we know that

If two figures are similar, then the ratio of its areas is equal to the scale factor squared

Let

z----> the scale factor

x-----> the area of the larger figure

y-----> the area of the smaller figure

$z^{2}=\frac{x}{y}$

we have

$z=\frac{4}{3}$

$y=390\ cm^{2}$

substitute and solve for x

$(\frac{4}{3})^{2}=\frac{x}{390}$

$(\frac{16}{9})=\frac{x}{390}$

$x=390*16/9=693.33\ cm^{2}$

4 0

3 years ago