Question

using the table of equalities, calculate the number of kilograms (kg) in 15.8 pounds (lb). remember to select an answer with the correct number of significant figures. some common equalities quantity metric (si) u.s. metric - u.s. length 1 km = 1000 m 1 ft = 12 in 2.54 cm = 1 in. (exact) 1 m = 1000 mm 1 yd = 3 ft 1 m = 39.4 in 1 cm = 10 mm 1 mi = 5280 ft 1 km = 0.621 mi volume 1 l = 1000 ml 1 qt = 4 cups 946 ml = 1 qt 1 dl = 100 ml 1 qt = 2 pt 1 l = 1.06 qt 1 ml = 1 cm³ 1 gal = 4 qt mass 1 kg = 1000 g 1 lb = 16 oz 1 kg = 2.20 lb 1 g = 1000 mg 454 g = 1 lb time 1 h = 60 min 1 h = 60 min 1 min = 60 s 1 min = 60 s 7.18 kilograms 2.20 kilograms 34.8 kilograms 15.8 kilograms i dont know yet submit

Explanation:

Step1: Identify conversion factor

We know that $1\ kg = 2.20\ lb$.

Step2: Set up conversion

Let $x$ be the mass in kilograms. We have the proportion $\frac{x}{15.8\ lb}=\frac{1\ kg}{2.20\ lb}$.

Step3: Solve for x

$x=\frac{15.8\ lb\times1\ kg}{2.20\ lb}$.
$x=\frac{15.8}{2.20}\ kg\approx7.18\ kg$.

Answer:

7.18 kilograms