Answer:
22
Step-by-step explanation:
Using the given expression and the sum, we can set up an equation and solve for the value of 'n':
Multiply both sides by '2':
n(n+1) = 506
Distribute: n² + n - 506 = 0
Factor: (n + 23) (n - 22) = 0
Set each equation equal to '0' and solve:
n + 23 = 0 n - 22 = 0
n = -23 or n = 22
Since the problem says the integers are positive, then n = 22.
The point estimation based on the given interval limits is 0.706.
<h3>What is a point estimate?</h3>
The use of sample data to compute a single value that will serve as a "best guess" or "best estimate" of an unknown population characteristic is referred to as point estimation.
The point estimation based on the given interval limits is,
Point Estimate = (0.688+0.724)/2 = 0.706
Hence, The point estimation based on the given interval limits is 0.706.
Learn more about Point Estimate:
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Answer: Choice B
{(0,0), (1,2), (2,4), (3,4)}
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Explanation:
A function is only possible if each x input leads to exactly one y output. For choice A, we have x = 1 lead to y = 3 and y = 5 at the same time, which is what the points (1,3) and (1,5) are saying. Therefore, choice A is not a function.
Choice C is also ruled out because x = 2 repeats itself as well. In this case, (2,3) and (2,4) means that the input x = 2 leads to the two outputs y = 3 and y = 4.
Choice D can be eliminated also for two reasons: x = 0 shows up twice, so does x = 2.
Only choice B has each x value listed one time only. So that means each input leads to exactly one output.
If you graph choice A, C or D, you'll find they fail the vertical line test. The vertical line test is where you test if you can draw a vertical line through more than one point on the graph. If you can draw a vertical line through more than one point on the graph, then the relation fails to be a function.
so, it went down from 1250 to 1000, namely 1250 - 1000 = 250.
now, if we take 1250 to be the 100%, what is 250 off of it in percentage?
