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3 years ago

8

Find the domain of the following graph:

1 answer:

sukhopar [10]3 years ago

3 0

Answer:

$-7$

Step-by-step explanation:

The domain is the set of all x-values. We can find the domain by finding the left boundary of the graph (the furthest left x-value) and then the right boundary (the furthest right x value).

The furthest left x-value is -7. Notice it has a large open circle here that is not filled in. This means the function does not include -7 but includes numbers very close to it like-6.999999..... We sue use an inequality sign without an equal to to write -7. x >-7.

The furthest right x value is 9. It has a closed circle or "filled in" circle so we write with an equal to sign. $x\leq 9$ .

We combine the two into $-7$ .

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seropon [69]

Answer:

Part a) The ratio of the perimeters is $3$

Part b) The ratio of the areas is $9$

Step-by-step explanation:

Part A) What is the value of the ratio (new to original) of the perimeters?

we know that

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

Let

z-----> the scale factor

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y-----> the perimeter of the original triangle

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

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y-----> the area of the original triangle

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

we have

$z=3$

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$\frac{x}{y}=3^{2}$

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Step-by-step explanation:

Given that:

Shape are either square or circle with both equally likely :

Hence,

P(square) = 1/2 ; P(circle) = 1/2

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P(green n circle) = 1/6

= 0.16666

(0.16666 * 100%) = 16.6666%

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3 years ago