**Answer:**

<u>**6x^3 -2x^2-11x + 4**</u>

**Step-by-step explanation:**

(3x - 4)(2x^2 + 2x - 1)

(3x - 4)(2x^2 + 2x - 1)

[(3x)(2x^2 + 2x - 1)] + [-4(2x^2 + 2x - 1)]

6x^3 + 6x^2 - 3x -8x^2 - 8x + 4

6x^3 + [6x^2-8x^2] [- 3x- 8x] + 4

<u>**6x^3 -2x^2-11x + 4**</u>

**Answer:**

-3/4

**Step-by-step explanation:**

Hope this helps. Pls give brainliest.

**Answer: **67.353

**Step-by-step explanation:**

60.000

+07.000

+00.300 Writing the numbers like this helps me keep track of them!

+00.050 It lets me see what place each number is in relative to the others

+00.003

**67.353**

**Answer:**

0.3520

**Step-by-step explanation:**

We have been given that the pulse rates among healthy adults are normally distributed with a mean of 80 beats/second and a standard deviation of 8 beats/second. We are asked to find the proportion of healthy adults have pulse rates that are more than 83 beats/sec.

First of all, we will find z-score corresponding to sample score of 83 as:

, where,

z = Z-score,

x = Sample score,

= Mean,

= Standard deviation.

Upon substituting our given values in z-score formula, we will get:

Now, we need to find the probability that a z-score is greater than 0.38.

Using formula , we will get:

Using normal distribution table, we will get:

**Therefore, 0.3520 of healthy adults have pulse rates that are more than 83 beats/sec.**