If two cars are moving with velocity 10 m/s and 5 m/s in opposite direction to each other. Their relative velocity with respect to each other is; a. 5 m/s b. - 5m/s c. 10 m/s d. 15 m/s.

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional

600,000,000,000, or 6e14

step-by-step explanation:

in 1995, potato plants were taken into space aboard the space shuttle columbia.

step-by-step explanation: