Does soil filled with nitrogen increase the weight of worms compared with soil without nitrogen? The weight of 20 randomly selected worms is acquired, 10 in soil with nitrogen and 10 in soil without nitrogen. The mean weight of worms in soil with nitrogen was 36.6 micrograms whereas the mean weight of worms in soil without nitrogen was 27.3 micrograms. A researcher randomized the data over 100 trials, and the difference of means for each trial is shown in the dot plot below.

26) -2(7x) = (-2 • 7) x a. associative property of addition b. associative property of multiplication c. commutative property of multiplication d. commutative property of addition

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).

Write 5 in the form of a/b using integers to show it as a rational number