Perform each of the following calculations. Round off answers to thr

1.	Perform each of the following calculations. Round off answers to three digits.a. (3.26 × 104) (1.54 × 106) b. (8.39 × 107) (4.53 × 109)c. \(\frac{8.94\times 10^6}{4.35\times 10^4}\)d. \(\frac{(9.28\times 10^9)\times (9.9\times 10^{-7})}{(511)\times (2.98\times 10^{-6})}\)
Answer» a. (3.26 × 10⁴) (1.54 × 10⁶) = 5.0204 × 10⁴⁺⁶ = 5.02 × 10¹⁰ b. (8.39 × 10⁷) (4.53 × 10⁹) = 38.0067 × 10⁷⁺⁹ = 38.0067 × 10¹⁶ = 3.80 x 10¹⁷ c. \(\frac{8.94\times 10^6}{4.35\times 10^4}\) = 2.055 x 10^6-4 = 2.06 x 10² d. \(\frac{(9.28\times 10^9)\times (9.9\times 10^{-7})}{(511)\times (2.98\times 10^{-6})}\) = 0.06033 x 10^9-7-(-6) = 0.06033 x 10⁸ = 6.03 x 10⁶

Perform each of the following calculations. Round off answers to three digits.a. (3.26 × 104) (1.54 × 106) b. (8.39 × 107) (4.53 × 109)c. \(\frac{8.94\times 10^6}{4.35\times 10^4}\)d. \(\frac{(9.28\times 10^9)\times (9.9\times 10^{-7})}{(511)\times (2.98\times 10^{-6})}\)

Answer»

a. (3.26 × 10⁴) (1.54 × 10⁶) = 5.0204 × 10⁴⁺⁶

= 5.02 × 10¹⁰

b. (8.39 × 10⁷) (4.53 × 10⁹) = 38.0067 × 10⁷⁺⁹

= 38.0067 × 10¹⁶

= 3.80 x 10¹⁷

c. \(\frac{8.94\times 10^6}{4.35\times 10^4}\) = 2.055 x 10^6-4

= 2.06 x 10²

d. \(\frac{(9.28\times 10^9)\times (9.9\times 10^{-7})}{(511)\times (2.98\times 10^{-6})}\) = 0.06033 x 10^9-7-(-6)

= 0.06033 x 10⁸

= 6.03 x 10⁶