The tree in Mary’s backyard is 7.1 m high. How high is it in centimeters?

701 cm

Step-by-step explanation:

cm =m * 100.0000

cm =7.1 * 100.0000

cm =710.0000

it's

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,