Answer:
Step-by-step explanation:
How many intersections are there of the graphs of the equations below? One-halfx + 5y = 6 3x + 30y = 36 none one two infinitely
2 answers:
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Option B : is the expression equivalent to
Explanation:
The given expression is
Rewriting the expression using the exponent rule,
Hence, we get,
Simplifying, we get,
Applying the rule,
Thus, we have,
Now, we shall determine from the options that which expression is equivalent to
Option A:
The expression is not equivalent to simplified expression
Thus, the expression is not equivalent to
Hence, Option A is not the correct answer.
Option B:
The expression is equivalent to the simplified expression
Thus, the expression is equivalent to
Hence, Option B is the correct answer.
Option C:
The expression is not equivalent to the simplified expression
Thus, the expression is not equivalent to
Hence, Option C is not the correct answer.
Option D:
The expression is not equivalent to the simplified expression
Thus, the expression is not equivalent to
Hence, Option D is not the correct answer.
Answer:
The function that would correctly calculate the 90% range of likely sample means is given by:
B. 4,200±CONFIDENCE.T(0.10,140,12)
Step-by-step explanation:
In Microsoft Excel, the syntax
returns the confidence interval for the population mean, using the students T-distribution.
The standard deviation is given as $140 and the sample size is 12.
In constructing the confidence interval we use:
Let us substitute the values to get:
We use the T distribution because is unknown