Which statements are true about dilations? Select all that apply.

2 answers:

4 0

A, C, and E. This is because dilations change the size/length of the sides = the sides cannot be congruent, however the angles are the same.

Lostsunrise [7]3 years ago

4 0

Answer with explanation:

Dilation of any geometrical shape means, producing an image , that has larger or smaller size than Pre image,

→Image > Pre-Image,≡If dilation factor > 1

→Image < PreImage,≡If 0<Dilation factor<1.

But , Image and Preimage are Similar in both the cases.

So,out of the five statement, the correct statements are:

1. Dilations produce images that are similar to the pre-image.

3. Dilations produce images that have angles that are congruent to the pre-image.

5. Dilations produce images that have sides that are proportional to the pre-image.

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A population has a mean muequals160 and a standard deviation sigmaequals20. Find the mean and standard deviation of the sampling

hoa [83]

Answer:

Mean 160

Standard deviation 2.63

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a random variable X, with mean $\mu$ and standard deviation $\sigma$ , the sample means with size n of at least 30 can be approximated to a normal distribution with mean $\mu$ and standard deviation $s = \frac{\sigma}{\sqrt{n}}$