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2 years ago

What is the area of a shaded sector if the diameter is 20

Mathematics

1 answer:

oee [108]2 years ago

6 0

So.. hmm notice the picture below... if the diameter is 20, the radius is half that

thus $\bf \textit{area of a circle's sector}\\\\
A=\cfrac{\theta\pi r^2}{360}\qquad 
\begin{cases}
r=radius\\
\theta=\textit{angle in degrees}
\end{cases}$

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3 years ago

The number of students who chose lunch was 5 more than the number of students who chose breakfast. Write a system of linear equa

Papessa [141]

Answer:

The system of linear equations are $y=5+x$ and $x+y=25$

Step-by-step explanation:

Given : The number of students who chose lunch was 5 more than the number of students who chose breakfast. Let x represent the number of students who chose breakfast and y represent the number of students who chose lunch.

(50 students picked, 25 picked dinner the rest picked lunch and breakfast)

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The number of students who chose breakfast be 'x'

The number of students who chose lunch be 'y'.

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