An airplane is .68 Kilometers long. How many Millimeters long is the plane? a. 680 mm
b. 6,800 mm
c. 68,000 mm
d. 680,000 mm

680000

mark brainliest

Given : Airplane is 0.68 kilometers long

We know that :

⊕   1 km = 1000 meters

⊕   1 m = 1000 millimeters

⇒   1 km = (1000 × 1000) millimeters

⇒   0.68 km = (0.68 × 1000 × 1000) millimeters

⇒   0.68 km = 680,000 mm

Airplane is 680,000 millimeters long

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form

the components of a vector are the parts of the vectors that are to each other.

b perpendicular