Answer:
Elimination
Step-by-step explanation:
You would not do substitution since it would not work so you do elimination since the 4y and -4y eliminate then you just solve for it.
Step-by-step explanation:
Confidence interval = mean ± margin of error
CI = μ ± ME
The mean is μ = 8.7.
Margin of error = critical value × standard error
ME = CV × SE
At 95% confidence and 9 degrees of freedom, CV = 2.262.
SE = s / √n
SE = 3.3 / √10
SE = 1.04
The margin of error is:
ME = 2.262 × 1.04
ME = 2.36
CI = 8.7 ± 2.36
CI = (6.34, 11.06)
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➴ The correct answer is B. the temperature in F on a summer day
B is correct because temperatures in the summer (in Fahrenheit) are high and positive. All the other answer choices are negative numbers.
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1,166 days I know this because I just did the math rig now
If y = 2x, then y/x = 2. The constant of proportionality is 2.
