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3 years ago

11

There is a playground behind Jayden’s school where kids go outside for recess. The playground is 85 feet wide and 236 feet long.

Jayden is curious if the playground has an area of more or less than 20,000 square feet. Does it? Show and explain how you know.

1 answer:

Aleonysh [2.5K]3 years ago

3 0

Answer:

Yes

Step-by-step explanation:

A = L x W

A = 236 x 85

A = 20,060

20,060 is more than 20,000 so yes

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3 years ago

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$\displaystyle f(x)=x^2+2x+2$

Step-by-step explanation:

<u>System Of Linear Equations </u>

In this problem, we'll need to solve a 3x3 system of linear equations because we have three unknowns and three conditions.

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$\displaystyle f(x)=ax^2+bx+c$

We need to find the values of a,b, and c. Let's use the first condition, i.e. f(-1)=1

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Finally, we use the third condition f(2)=10

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$\displaystyle f(2)=4a+2b+c$

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$\displaystyle \left\{\begin{matrix}a-b+c=1\\ a+b+c=5\\ 4a+2b+c=10\end{matrix}\right.$

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$\displaystyle \left\{\begin{matrix}a+c=3\\ 4a+c=6\end{matrix}\right.$

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Now we have all the values, the quadratic function is

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Answer:

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Step-by-step explanation:

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3 years ago

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