147 let us let u = [ 47 21 -3 and a= 0 1 -2 . is u in the subset of r | 1 3 - 2 spanned by the columns of a? why or why not? select the correct choice below and fill in the answer box to complete your choice. (type an integer or decimal for each matrix element.) o a. no, the reduced row echelon form of the augmented matrix is , which is an inconsistent system. ob. yes, multiplying a by the vector writes u as a linear combination of the columns of a.

-14

step-by-step explanation:

2x2 – 2(x+4)

=2x2-2（5+4）

=4-2×9

=4-18

=-14

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c

answer: what is the conflict?

step-by-step explanation:

*what has happened to new york city?

*what is in the time capsule?

* what did the kidz see that gave them hope?

*what will they do with what they find?

* how will they save the city?

* what challenges will they face along the way?

*what big choice will they make at the climax of the story?

* what lesson do they learn at the end of the story?