Answer:
The correct answer is the third option
Step-by-step explanation:
Have different slope but have the same y-intercept, so they have no solution.
y = 1/2x - 3
To graph this, the slope 1/2 which means go up once and to the right twice and b = -3, which means the y-intercept.
second equation:
y = -1/2x -3
To graph this, the slope -1/2 which means go down once and to the right twice and b = -3, which means the y-intercept.
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Answer:
The answer is 5.8
Step-by-step explanation:
Answer:
Sum (from n = 0 to n = 33) of 10 + 15 * n
Step-by-step explanation:
The sigma notation is to express an arithmetic series as a summation, in this case we can see that it starts at 10 and ends at 505.
What we can notice is that the values are increasing by 15 units, therefore that will be the proportion that accompanies "n".
Now, we must calculate, how many times is "n", in the final value, for this we subtract the initial value, that is 10 and divide it by 15.
505 - 10 = 495/15 = 33
So "n" goes up to 33
So that series is expressed like this:
Sum (from n = 0 to n = 33) of 10 + 15 * n
Z-test should be used when the parent standard deviation is known and the sample size is greater than or equal to 30 (to satisfy the Central Limit Theorem). A T-test should be used when these two rules do not apply.
