What’s the correct answer for this? Select all the ones that apply ?

Mathematics

2 answers:

iris [78.8K]2 years ago

6 0

Answer:

A and D

Step-by-step explanation:

Either rotate the dilated circle 180° about point C or Translate the dilated circle so that it's centre is at point B so that we come to know that the circles are similar

maksim [4K]2 years ago

5 0

The answer is a and d

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Please help and explain questions 20-22

zmey [24]

Hello!

The formula for circumference is $2\pi r$ and the formula for area of a circle is $\pi r^{2}$ . Armed with these formulas, we can begin to find the circumferences and areas of the circles.

20.
C = $2 \pi r$
C = $2 \pi (6.5)$
C = $13 \pi$
C = 13(3.14)
C = 40.8

A = $\pi r^{2}$
A = $\pi (6.5)^{2}$
A = $\pi (42.25)$
A = 132.7

The circumference of the circle is 40.8 in and the area of the circle is 132.7 in².

21.
[Since we are given the diameter for this problem, to find the circumference, we no longer need to multiply the radius by 2 as in $2 \pi r$ because the diameter is the radius × 2. For $\pi r^{2}$ we do need to divide the diameter by 2.]

C = $15.7 \pi$
C = 49.3

A = $\pi r^{2}$
A = $\pi (7.85)^{2}$
A = $61.62 \pi$
A = 193.5

The circumference of the circle is 49.3 in and the area of the circle is 193.5 in².

And that is all there is to it. I hope this helps you! (:

6 0

2 years ago

1. Graph the function . Draw a chart to show at least four ordered pairs that are on the graph.

erastova [34]

Simple...

you have: $y= \frac{2}{x}$

Graph is attached.

Some ordered on this line are-->>

Using x y

(-4,-0.5)

(-3,-0.667)

(-2,-1)

(1,2)

(3,0.667)

(4,0.5)

Thus, your answer.