2 years ago

Carl borrowed $7 for lunches during one week $8 for lunches during the next week. How much money did Carl borrow?

Mathematics

1 answer:

frez [133]2 years ago

5 0

Answer:

Step-by-step explanation: quit

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Use the quadratic formula to find the exact solutions of x2 - 5x - 2 = 0.

Fudgin [204]

Step-by-step explanation:

${x}^{2} - 5x - 2 = 0 \\ a = 1 \: and \: b = - 5 \: and \: c = - 2 \\ x = \frac{ - b± \sqrt{ {b}^{2} - 4ac } }{2a} \\ x = \frac{ - ( - 5)± \sqrt{ {( - 5)}^{2} - (4 \times 1 \times - 2)} }{(2 \times 1)} \\ x = \frac{5± \sqrt{33} }{2} \\ either : x = \frac{5 + \sqrt{33} }{2} \: or \: \frac{5 - \sqrt{33} }{2} \\ x = 5.4 \: or \: - 0.4$