Using the trend line, it is found that the year in which the record for the 100-meter dash was 11.8 seconds was:
A. 2005
<h3>What is the regression line?</h3>
It is given by:
In which:
- y is the record in seconds.
- x is the number of years since the year 2000.
The record will be of 11.8 seconds x years after 2000, considering that y = 11.8, hence:
Hence in 2005, and option A is correct.
More can be learned about regression lines at brainly.com/question/26059078
The lines appear to be parallel. We can check this out by examining the
two equations, and we see that sure enough, both lines have the same
slope (1/2) so they're definitely parallel. Parallel lines never intersect,
so this pair of equations has NO solutions. NONE. Zero. Bubkes. Nada.
Answer:
C
Step-by-step explanation:
To multiply matrices, the number of columns in the first matrix must equal the number of rows in the second matrix.
Matrix A has 2 columns.
Matrix B has 2 rows.
So the matrices can be multiplied.
Matrix A has 2 rows. Matrix B has 1 column. So the result will also have 2 rows and 1 column.
The first row is (5)(2) + (2)(3) = 16.
The second row is (3)(2) + (-1)(3) = 3.
It applies to addition and multiplication. Example: a+b=b+a and a*b=b*a. It means that when you switch something around it is still equal
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Answer:
D
Step-by-step explanation:
C=0.05M+40
Cost = 5 cents per minute plus 40 dollars