3 years ago

Is the perimeter of a square and its side length linear or not linear?

1 answer:

4 0

Its linear , if side is x then perimeter is 4x
I hope this helps, if you have any further questions don't hesitate to ask

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A sector with a radius of 8 cm has an area of 56pi cm2. What is the central angle measure of the sector in radians?

Maurinko [17]

Answer:

$\frac{7\pi}{4}$ .

Step-by-step explanation:

Given information:

Radius of circle = 8 cm

Area of sector = $56\pi\text{ cm}^2$

Formula for area of sector is

$A=\dfrac{1}{2}\theta r^2$

where, r is radius and $\theta$ is central angle in radian.

Substitute $A=56\pi$ and r=8 in the above formula.

$56\pi=\dfrac{1}{2}\theta (8)^2$

$56\pi=\dfrac{64}{2}\theta$

$56\pi=32\theta$

$\dfrac{56\pi}{32}=\theta$

$\dfrac{7\pi}{4}=\theta$

Therefore, the measure of the sector in radians is $\frac{7\pi}{4}$ .

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3 years ago

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Anastasy [175]

F(9)
sub 9 forx
f(9)=5(9)-16
f(9)=45-16
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3 years ago

If the temperature changed at a rate of -3 per hour,then after how many hours did the temperature reach -12

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