Answer:
<3, 7> and [3 7], b and c
Step-by-step explanation:
multiply the vector by the matrix {1 0} (top row) {0 -1} bottom row. So you flip the sign of the -7 and this gives us +7.
Answer:
15
Step-by-step explanation:
Answer:
a
Step-by-step explanation:
because for a 45-degree right triangle the two legs are the same and because the legs are sqrt 3, it is sqrt 6
21/1.5=14
14 years to erode
