Question

800. 3.0 x 103 kg 85 000 g 10. Round off to three significant figures. 5080 L 37 400 g 104 720 m 0.000 250 82 s 100 000 L 26 711 s 0.003 378 m 56.982 g 35.7823 m 0.002 621 7 L 3.8268 x 103 g 1.854 kg 11. Convert 2.5 miles to km.

Answer 1

10 answer

In 11) generally The zero to the left of the decimal point is not significant Ex: 320 only significant figures "2'. <> zeros between non zero numbers are significant Ex: 303 , significant figures =3. c) All non zero numbers are significant 508oL * In this so8 only significant nificant figures. so I sig :: So 80L = 5080L 37400g = 374oog (with 3 significant figures) 3.74X1024 (with 3 significant figures) 104720m 105000 (61) 105x10s (with 3 significant figures).

0.000 250825 The original number has's significant figury. 0.000 25082 Rounded to 3 sig. fig. = 0.000 2515 Cor 2:51x1045 100 000 L It has only Then rounded 1 significant figures. to ] significant figures 1000002 26711s 267115 = 267005 () 2.67X164 0.00 3378 m 003378 m 0.00 338m ( 3. 38 xlo 56.9829 56.9829 = 57.9 on 5.70 x intem
11 answer is

we know that 1 mile = 1.61 km Given 2.5 miles i1.61 km I mile )* (a-Smile) = 4.02km 2.5 miles =4.02km