3 years ago

Will give BRAINLIEST!!! (the ones written in pink are incorrect)

1 answer:

3 0

The first one is 11/5(dilating it with this will make it the same size as the bigger one)

The second on is Translate(translating it will show that they match up perfectly

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To obtain the area of a sector, what fraction is multiplied by the area of a circle (A = πr2)?

romanna [79]

Let r be a radius of a given circle and α be an angle, that corresponds to a sector.

The circle area is $A=\pi r^2$ and denote the sector area as $A_1$ .
Then $\dfrac{A_1}{A}= \dfrac{\alpha}{2\pi}$ (the ratio between area is the same as the ratio between coresponding angles).

$A_1=\dfrac{\alpha}{2\pi} \cdot A=\dfrac{\alpha}{2\pi} \cdot \pi r^2= \dfrac{r^2\alpha}{2}$ .

6 0

2 years ago

12. Nine more than y is twenty one.

Anettt [7]

Answer:

y+9=21

Step-by-step explanation:

9 more than y equals 21.

4 0

2 years ago

Read 2 more answers

N(n − 3) + 2(n-3)=( )(n-3)