Answer:
Step-by-step explanation:
Simplifying using the exponent rule with the same base
Calculate the sum or difference:
Answer:
When talking about the mean of something, we are asking the mean average. To get the mean average of something, sum up all the numbers in the set and divide the sum by the number of elements in the set.
<span>0 + 1 + 1 + 2 + 2 + 5 + 3 + 3 + 4 + 6 + 5 + 7 + 6 + 9 = 45
45 / 14 </span>≈ <span>3.2
So, the mean average is 3.2.</span>
Answer:
14,456
Step-by-step explanation:
The number sold in Delaware is 1/8 the number sold in New York, so is ...
(1/8)×115,648 = 14,456
14,456 electronic keyboards are sold in Delaware on average each year.
9514 1404 393
Answer:
- [-4, -1)
- [-1, 1)
- [1, 5]
Step-by-step explanation:
The numbers that describe the domain of the piece are the x-value at the left end and the x-value at the right end of each piece.
Piece 1 is defined between x=-4 and x=-1, so the interval is [-4, -1).
Piece 2 is defined between x=-1 and x=1, so the interval is [-1, 1).
Piece 3 is defined between x=1 and x=5, so the interval is [1, 5].
_____
<em>Additional comment</em>
The rounded bracket at the right end of the domain interval means the point is not included. The square bracket means the point is included. In general, you only want each x-value to have one corresponding f(x) definition, so it is usually not appropriate to include it as part of two different pieces of the piecewise function. [-4, -1) means -4 ≤ x < -1.