URGENT!! Find the measurements, rounded to the nearest tenth of a degree, of the three angles of a triangle with sides: a=3cm, b=5cm, c=7cm. Select the three best choices, below.

A. 21.8°

B. 30.0°

C. 38.2°

D. 51.8°

E. 60.0°

F. 68.2°

G. 98.6°

H. 120.0°

I. 141.8°

J. 158.2°

Evaluate 8x2 + 9x − 1 2x3 + 3x2 − 2x dx. solution since the degree of the numerator is less than the degree of the denominator, we don't need to divide. we factor the denominator as 2x3 + 3x2 − 2x = x(2x2 + 3x − 2) = x(2x − 1)(x + 2). since the denominator has three distinct linear factors, the partial fraction decomposition of the integrand has the form† 8x2 + 9x − 1 x(2x − 1)(x + 2) = correct: your answer is correct. to determine the values of a, b, and c, we multiply both sides of this equation by the product of the denominators, x(2x − 1)(x + 2), obtaining 8x2 + 9x − 1 = a correct: your answer is correct. (x + 2) + bx(x + 2) + cx(2x − 1).