Slope equals rise over run
The distance of the points is 4 units down and 2 units right
-4/2 = -2
Slope = -2
Given a table below which gives the years in A.D. for an archaeological excavation site using the method of tree ring dating:
Part A:
The sample mean is given by:
Therefore, the sample mean is 1268.
Part B:
We calculate the sample standard deviation as follows:
Part C:
The 90% confidence interval is given by:
Answer:
(There's a confusion here, is x 2 x times 2? The answer and explanation are based on x multiply by 2)
y = -8
Step-by-step explanation:
Substitution Method-
y = x 2 - 4
x = -2
y = (-2) 2 - 4
PEMDAS - parentheses; exponents; Multiplication & Division; Addition & Subtraction
we are going to multipl -2 and 2 together ---> -4
y = -4 - 4
Same sign add, different sign subtract.
Same sign keep the sign, different sign keep the larger.
y = -8
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Answer:
The original price was $288.00.
Step-by-step explanation:
First, identify your rate and your base. Your rate is 20% and your base is $240. Next, take 20% and convert it to a decimal, making .20. Third, multiply the base by the new rate, $240 x .20, but don't line up the decimals. This will give you $48.00 (your number will usually get smaller if you're working with decimals). Finally, add $48.00 to $240.00. This will give you $288.00.
