Question

Use the propotion to convert millimeters to centimeters.

10mm = 47mm
_________ _________
1 cm x

A) x = 0.47 cm
B) x = 4.7 cm
C)x = 47 cm
D)x = 470 cm

use the proportion to convert milligrams to grams.
1,000 mg = 2,900 mg
_____________ ___________
1m 7.2m
A) x = 0.72 cm
B) x = 7.2 cm
C) x = 72 cm
D) x = 720 cm

Answer 1

number 1 is 4.7cm
number 2 is 720 cm

Answer 2

Explanation:

Since 10 mm = 1 cm

we can convert 47 mm as 47x1/10 = 4.7 cm.

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SInce conversion factor for milligrams to grams is 1000 mg = 1 gram

we have

2900 mg = 2900/1000 = 2.9 gms.

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For conversion of m to cm we have conversion factors as

1 m = 100 cm.

Hence 7.2 m = 7.2x100 cm = 720 cm.