Answer:
c = 127°
Step-by-step explanation:
∡c and ∡a are supplementary angles.
Supplementary angles sum 180°
∡a = 53°
Then:
53° + c = 180°
c = 180° - 53°
c = 127°
The coefficient is what the bariable is multiplied by. In this case, the variable is x and it is multiplied by 4
Divide the number of people by the number of plates per pack:
138 / 12 = 11.5
He need to buy 12 packs of plates to have enough.
The correlation coefficient measures the relationship between the two variables
The correlation coefficient is 0.234
<h3>How to determine the correlation coefficient</h3>
The formula of correlation coefficient is:

Using the dataset from the complete question, we have:

Evaluate the difference

Evaluate the quotient

Approximate

Hence, the correlation coefficient is 0.234
Read more about correlation coefficient at:
brainly.com/question/4219149