lennyatme
13.11.2020 •
Mathematics
Of the 482 graduating seniors at Palmdale High School, approximately 5/8 are going to college, and approximately 1/2 of those going to college are going to an in-state school. Which of the following is the closest estimate for how many of the graduating seniors are going to an in-state school?
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Ответ:
0.86, 8.14
Step-by-step explanation:
x+ 7/x =9, where x≠0x^2+7= 9x multiply each term by x to get rid of fractionx^2 - 9x + 7= 0 solving as normal quadratic equationx= (9 ± √ (9^2 - 4*7)) / 2x= (9 ± √53) /2 x≈ 0.86x≈ 8.14