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Sladkaya [172]
3 years ago
12

Use the quadratic formula to find the exact solutions of x2 − 9x + 5 = 0.

Mathematics
2 answers:
Diano4ka-milaya [45]3 years ago
7 0

Answer:

Step-by-step explanation:

All those words, when the math is so much clearer!

x = (9±√(9^2-4*1*5))/2 = (9±√101)/2

spin [16.1K]3 years ago
7 0

Answer:

x equals 9 plus or minus the square root of 61, all over 2

Step-by-step explanation:

Solve the equation for  x by finding a, b, and c of the quadratic then applying the quadratic formula.

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<em>Z</em> = (<em>X</em> - <em>µ</em>) / <em>σ</em>   ↔ <em>X</em> = <em>µ</em> + <em>σ</em> <em>Z</em>

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P(<em>X</em> < 79) = P((<em>X</em> - 76.0) / 12.5 < (79 - 76.0) / 12.5)

… = P(<em>Z</em> < 0.24)

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