Agroup of hikers have to walk around a lake. they walk due north at a pace of
2.5km/hr for 1.5hours. then they head due east and walk another 45min at a pace
of 2km/hr. how much farther did they have to walk by going around the lake?

add all the numbers and check the ones place.

the answer is 486. as the ones place is more than 4, the estimation will be the next 10 ie, 490

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,

there is no answer sorry!

step-by-step explanation: