Answer:
the last one
Step-by-step explanation:
The first table shows an upward trend (positive correlation).
The second table shows a horizontal line, neither up nor down (zero correlation).
The third table is incomplete, but seems to show as much upward as downward trend, so has a correlation near zero also.
The last table shows a decidedly downward trend, so will have a strong negative correlation.
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<em>Comment on answer choices</em>
The order of answer presentation may vary, so "D" may not be the answer to a different instance of this question.
Answer:
List is {-2i, 2i, -4)
Step-by-step explanation:
This is a third order polynomial, so we expect three roots (solutions).
Note that we can factor this expression by grouping:
(x²)(x + 4) + (4)(x + 4) = 0, or
(x + 4)(x² + 4) = 0
The factor (x + 4) corresponds to the root/solution x = -4, and:
The other factor (x² + 4) corresponds to the roots/solutions x = 2i and x = -2i.
List is {-2i, 2i, -4)
Answer:
C
Step-by-step explanation:
Distribute the 5x to the contents of the inner parentheses to get
5x^4+
Answer:
The graph is symmetric about the origin.
The graph does not pass through the origin.
Step-by-step explanation:
We're given:
- the function y=axn
- a = 1
- n is odd
Because a = 1, then the given function can be rewritten as y = n.
The function y = n will produce a horizontal line. Any function in the form of y = a single number, such as 4 or 9.3 will produce a horizontal line.
- The graph is symmetric about the origin.
This is true, given the graph is a horizontal line.
- The graph does not pass through the origin.
This is also true. We're given that n is an odd number. The graph will only pass through the origin if n = 0, and 0 is even.
- The graph has more than one x-intercept.
This would only be true when n = 0, and this isn't possible. So, no.
