lauradiana lauradiana

22-06-2019
Mathematics

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7=-2.7x^2+30x+6.5 round nearest 10th

Respuesta :

Аноним Аноним

03-07-2019

Answer:

0 , 11.1 correct to the nearest tenth.

Step-by-step explanation:

7=-2.7x^2+30x+6.5

2.7x^2 - 30x + 0.5 = 0

Using the quadratic formula:

x = [-30 +/- sqrt ( (-30^2 - 4 * 2.7 * 0.5 )] / 5.4

= 0.017, 11.094.

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