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Mandarinka [93]

3 years ago

11

The area of North Carolina is about 5.3 ×104 square miles. The area of Rhode Island, the smallest state, is about 1.3 × 103squar

e miles. Approximately how many times greater is the area of North Carolina as compared to the area of Rhode Island?

1 answer:

Anarel [89]3 years ago

4 0

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How many sides does a nonagon have?

guapka [62]

Answer:

9

Step-by-step explanation:

Fun fact. The name nonagon comes from Greek enneagonon, and is arguably more correct, though less common than "nonagon".

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3 years ago

Sofia hits a softball straight up. the equation h= -16t^2 + 90t models the height h, in feet, of the ball after t seconds. How l

andrezito [222]

It is in the air 5.625 seconds.

Using the quadratic formula,

$t=\frac{-b\pm \sqrt{b^2-4ac}}{2a}
\\
\\=\frac{-90\pm \sqrt{90^2-4(-16)(0)}}{2(-16)}
\\
\\=\frac{-90\pm \sqrt{8100-0}}{-32}
\\
\\=\frac{-90\pm \sqrt{8100}}{-32}=\frac{-90\pm90}{-32}
\\
\\=\frac{-90+90}{-32}\text{ or }\frac{-90-90}{-32}=\frac{0}{32}\text{ or }\frac{-180}{-32}
\\
\\=0\text{ or }5.625$

0 is when the ball is first launched, 5.625 is when it hits the ground again.

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3 years ago

the width of a rectangle is y feet long. the rectangle is 4 feet longer than it is wide l. what is arena of the rectangle?

ahrayia [7]

Area= i^2 + 4i
Area= length x width
Length (y)= i + 4
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How much is 160÷43×62

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Answer: 230.697

Step-by-step explanation:

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The graph of g(x)=ax^2 opens downward and is narrower than the graph of f(x)=x^2. Which of the

Masteriza [31]

You’re answer is

b

you’re welcome :)

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