Choose the correct simplification of the expression (3x − 6)(2x2 − 4x − 5).
2 answers:
Answer:
Option 3rd is correct
Step-by-step explanation:
Given the expression:
Multiply the first term of the first expression with second expression and second term of the first expression with second expression we have;
using distributive property we have;
Combine like terms we have;
therefore, the correct simplification of the given expression is,
You might be interested in
Answer:
Interval [16.34 , 21.43]
Step-by-step explanation:
First step. <u>Calculate the mean</u>
Second step. <u>Calculate the standard deviation</u>
As the number of data is less than 30, we must use the t-table to find the interval of confidence.
We have 6 observations, our level of confidence DF is then 6-1=5 and we want our area A to be 80% (0.08).
We must then choose t = 1.476 (see attachment)
Now, we use the formula that gives us the end points of the required interval
where n is the number of observations.
The extremes of the interval are then, rounded to the nearest hundreth, 16.34 and 21.43
