3 years ago

Question

Mathematics

1 answer:

nika2105 [10]3 years ago

8 0

Answer:

y = -1

Step-by-step explanation:

(y+1)/(x-8) = (-1+1)/(-2-8)

(y+1)/(x-8) = 0

y+1 =0

y= -1

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True or false? to find the area of a sector, you multiply the area of the circle by the fraction of the circle covered by that s

Dmitriy789 [7]

<h2>Answer:</h2>

True

<h2>Step-by-step explanation:</h2>

The area of a sector can be found in two ways:

First. With a formula in degrees.

$A=\frac{\pi r^2 \alpha^{\circ}}{360^{\circ}}$

Second. With a formula in radians.

$A=\frac{r^2 \beta }{2}$

For example, for a sector α = 180° (β = π). we have:

$A=\frac{\pi r^2 \alpha^{\circ}}{360^{\circ}} \therefore A=\frac{\pi r^2 180^{\circ}} {360^{\circ}} \therefore A=\frac{\pi r^2}{2}\\ \\ \\ A=\frac{r^2 \beta }{2} \therefore A=\frac{r^2 \pi }{2} \therefore A=\frac{\pi r^2}{2}$

As you can see, from the two forms we have found out that if you want to find the area of a sector, you multiply the area of the circle by the fraction of the circle covered by that sector, because 180° (π) represents half a circle.

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3 years ago

Read 2 more answers

Christopher spends a total of $235.94. He purchases shoes for $80 as well as several sweaters. If each sweater was $25.99, how m

Xelga [282]

$235.94 - 80 = 155.94

155.94 ÷ 25.99 = 6

He bought 6 sweaters

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4 years ago

Select all the correct answers.

alina1380 [7]