3 years ago

2X plus 5 minus X plus 3X plus X -2

Mathematics

1 answer:

IrinaK [193]3 years ago

3 0

Answer:

=5x+3

Step-by-step explanation:

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Answer:

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3 years ago

A sector of a circle makes a 127° angle at its centre. If the arc of the sector has length 36 mm, find

Veseljchak [2.6K]

Answer:

Approximately $68.5\; \rm mm$ .

Step-by-step explanation:

Convert the angle of this sector to radians:

$\begin{aligned}\theta &= 127^{\circ} \\ &= 127^{\circ} \times \frac{2\pi}{360^{\circ}} \\ &\approx 2.22\end{aligned}$ .

The formula $s = r\, \theta$ relates the arc length $s$ of a sector of angle $\theta$ (in radians) to the radius $r$ of this sector.

In this question, it is given that the arc length of this sector is $s = 36\; \rm mm$ . It was found that $\theta = 2.22$ radians. Rearrange the equation $s = r\, \theta$ to find the radius $r$ of this sector:

$\begin{aligned} r&= \frac{s}{\theta} \\ &\approx \frac{36\; \rm mm}{2.22} \\ &\approx 16.2\; \rm mm\end{aligned}$ .

The perimeter of this sector would be:

$\begin{aligned}& 2\, r + s \\ =\; & 2 \times 16.2\; {\rm mm} + 36\; {\rm mm} \\ =\; & 68.5\; \rm mm\end{aligned}$ .

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2 years ago

I REALLY NEED HELP WILL GIVE EVERYTHING GOOD IF YOU HELP ON 2 MORE

DerKrebs [107]

Answer:

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3 years ago

A scale drawing of Julie's living room is shown below:

stealth61 [152]

Answer:

length = 16 feet

width = 12 feet

Step-by-step explanation:

divide the length and width by 2 so you get 3 and 4. then you proceed to Multiply both by 4 and you get 12 and 16

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2 years ago

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Arada [10]

Answer:

Step-by-step explanation:

BED is the same angle as AEC

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3 years ago