Step-by-step explanation:
11)
d=√[(-2-(-3))^2+(3-10)^2]=√(-2+3)^2+(-7)^2
=√1+49=√50=7.07 approximately
12)
M (((-1)+(-7))/2 , (2+(-4))/2)=(-8/2 , -2/2)=(-4 ,-1)
1.5÷60=0.025 per second
30÷0.025=1200 second
1200÷60 =20 hours
20 hours
a a a
The correct answer would be a^3