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kherson [118]
3 years ago
5

there are 320 seniors at strong field high school. if 90% of them go expect to go to college, how many of the seniors expect to

go to college?
Mathematics
2 answers:
weqwewe [10]3 years ago
8 0
288. to figure this out I set up a proporton, 90 (percent) over 100 ( percentages are always out of 100) and x ( the variable, what's ere trying to figure out) over 320 (since we are trying to find what over 320 is equal to 90 out of 100.
\frac{90}{100}  =  \frac{x}{320}
after cross multiplying, you find that 90/100 is equal to 288/320
deff fn [24]3 years ago
7 0

\bf a\%~of~b \implies \cfrac{ a}{100}\cdot b~\hfill
\textit{90\% of 320 is }\cfrac{90}{100}\cdot 320

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There is a 95% chance that values will be within ±2 standard deviations of the mean.

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Approximately 99.7% of the measures are within 3 standard deviations of the mean.

In this question:

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3 years ago
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This is represented by the formula given in the lower left.

8 0
3 years ago
Read 2 more answers
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