(10x^6y^3 + 20x^3y^2) / 5x^3y
10x^6y^3 / 5x^3y ⇒ 2x^3y^2
20x^3y^2 / 5x^3y ⇒ 4y
2x³y² + 4y This is the simplified answer. The last option.
The answer to this question is: Jenny will still owe her sister $9.30.
25.63 - 16.33 = 9.30
So hmmm check the picture below
now
now, that's how many yard³ are there for that slab, now, how much is the cost?
well, each yd³ costs $40, thus
Using the t-distribution, as we have the standard deviation for the sample, it is found that the 95% confidence interval is (29.6, 44.4).
<h3>What is a t-distribution confidence interval?</h3>
The confidence interval is:
In which:
- is the sample mean.
- s is the standard deviation for the sample.
The critical value, using a t-distribution calculator, for a <u>two-tailed 95% confidence interval</u>, with 25 - 1 = <em>24 df</em>, is t = 2.0639.
The other parameters are given by:
.
Hence, the bounds of the interval are given as follows:
The 95% confidence interval is (29.6, 44.4).
More can be learned about the t-distribution at brainly.com/question/16162795
32:33 is the ratio because 65 total students subtract 32 boys leaves 33 girls.