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3 years ago

At the Valentine's Dance there were 428 students and 22 parents. What percent of the attendees were parents?

Mathematics

2 answers:

Sergio [31]3 years ago

6 0

4.888...%

428 + 22 = 450

22/450 = 0.4888...

0.4888... x 100 = 4.888...

(dots mean the decimal goes on forever)

aleksklad [387]3 years ago

3 0

4.888...% 428 + 22 = 450

<span>22/450 = 0.4888 0.4888x100 = 4.888....%</span>

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3 years ago

Solve each equation 3x^2=80

Lapatulllka [165]

Answer:

$x = \frac{4\sqrt{15}}{3}, x = \frac{-4\sqrt{15}}{3}$

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Step-by-step explanation:

Hello!

Use the quadratic formula: $x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$

First, let's convert our equation to standard form of a Quadratic: ax² + bx + c = 0

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2 years ago

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Since , the best point estimate for population proportion is sample proportion.

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2 years ago

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