Given that <span>Henry divided the town into eight regions and randomly chose 10 households from each region in order to survey about traffic concerns. This type of sample is called</span> stratified sampling.
Stratified sampling<span> is a type of </span>sampling <span>method where</span><span> the researcher divides the population into separate groups, called strata and then, a probability </span>sample<span> (often a simple random </span>sample<span> ) is drawn from each group.</span>
Isolate the x. Subtract 20x from both sides, and add 15 to both sides
-5x (-20x) - 15 (+15) > 10 (+15) + 20x (-20x)
-5x - 20x > 10 + 15
Simplify. Combine like terms
-25x > 25
Isolate the x. Divide -25 from both sides. Note that when you are dividing by a negative number, flip the sign.
(-25x)/-25 > (25)/-25
x > 25/-25
x < -1
x < -1 is your answer
hope this helps
Answer:
15
Step-by-step explanation:
5-(-8)= 5+8= 13 because when the problem is subtraction you change the last number to a positive or negative
For this case we have the following functions:
We must find .
For definition we have to:
So:
Answer: