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.
