What is the first step to simplify the expression 3(x+8)^2/x+2?
2 answers:
Answer:
Option D is correct that is square the binomial inside the parentheses.
Step-by-step explanation:
We have been given the expression:
First step we will do solve this given expression is to square the binomial inside the parenthesis so we will get:
Then distribute the 3 to the terms inside the parentheses
Therefore, option D is correct.
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COMPLETE QUESTION:
Find some means. Suppose that X is a random variable with mean 30 and standard deviation 4. Also suppose that Y is a random variable with mean 50 and standard deviation 8. Find the mean of the random variable Z for each of the following cases. Be sure to show your work.
a) Z = 35-10X
b) Z = 12X-5
c) Z = X+Y
d) Z = X-Y
e) Z = 2X+2Y
Answer:
a) -265
b) 355
c) 80
d) -20
e) 40
Step-by-step explanation:
The attachment below contains the whole calculations that provides for the answers above
Alright, so it would be helpful to think about this question in terms of units. You're given a distance (meters) and speed (meters per second). You're asked for time (which is in seconds).
If you do
, your answer will be in seconds. So divide your distance (2.28 x 10^11 meters) by your speed (3.00 x 10^8 meters/second), and you should get your time!
If you do
Here is the graph, you can match it yourself:
