3 years ago

In a class of 20 students, 40% are boys. 25% of boys and 50% of the girls wear glasses. How many students wear glasses?

Mathematics

1 answer:

garri49 [273]3 years ago

7 0

I got eight...............

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Liono4ka [1.6K]

Distribute the 2 first.

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Combine like terms.

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3 years ago

The pair of points 6, Y and 10, -1 light on a line with a slope of 1/4 what is the value of Y

andrezito [222]

$\bf (\stackrel{x_1}{6}~,~\stackrel{y_1}{y})\qquad (\stackrel{x_2}{10}~,~\stackrel{y_2}{-1}) \\\\\\ slope = m\implies \cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{-1-y}{10-6}=\stackrel{\stackrel{given}{\downarrow }}{\cfrac{1}{4}}\implies \cfrac{-1-y}{4}=\cfrac{1}{4} \\\\\\ 4(-1-y)=4\implies -1-y=\cfrac{4}{4}\implies -1-y=1\implies -2=y$