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SSSSS [86.1K]
3 years ago
12

Donna guessed there were 400 jellybeans in a jar. There were really 480 jellybeans. What is her prevent of error

Mathematics
1 answer:
maks197457 [2]3 years ago
5 0

Answer:

Step-by-step explanation:

Donna guessed 400 but there were 480 so she was off by 80

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3 years ago
Which of the following are possible values of r?<br><img src="https://tex.z-dn.net/?f=%20%7Br%7D%5E%7B2%20%7D%20%20%3D%20%20%5Cf
marshall27 [118]

Answer:

r=\frac{\sqrt{3} }{4}    and    r=-\frac{\sqrt{3} }{4}

Step-by-step explanation:

when you solve for r in the given equation, you need to apply the square root property, which gives positive and negative answers (both should therefore be considered):

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then you need to include these two possible solutions:

r=\frac{\sqrt{3} }{4}    and    r=-\frac{\sqrt{3} }{4}

5 0
3 years ago
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