—>The area of a triangle whose vertices; A(1,-1, 2)m, B(2, 1, -1)m and C(3,-1,2)m
(1) 13m^2
(2) 8root13 m^2
(3) root13 m^2
(4) root26m^2

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg