Please solve, with work, numbers 22, 25, 36, 42, 44, 53, and 56!
(7.86) (0.001) kg = 7860 kg/m? (0.01') m Here, the units g and cm3 are in both numerator and denominator and therefore cance out, leaving units of kg and m3. Also, all numbers are exact, except 7.86. EXERCISES 1.4 n Exercises 1-4, make the given changes in the indicated examples of this section, and then simplify the resulting expression. 1. In Example 4(a), change ( to (3)2 2. In Example 6(d), change (2x) to 2x°. 3. In Example 7(f), interchange the a3 and x. 37. 39. 12 (2u)" 38. 40. In Example 8, change (-1 )2 to ã )3. In Exercises 5-48, simplify the given expressions. Express results with 44. ar2-5.46. positive exponents only 47 48. 10. 12. In Exercises 49-56, evaluate the given expressions. In Exercis 15. (2m) 19.(㸠16. (-ax)s51-56, all numbers are approximate 20. (F)" 51. 7(( 26,5)(-5(-985), 49. 7(-4) 51.-(-26.5)2-(-985)3 sa 607112P (-( 2009)6 50. 6-1-21s - (-2)(8) 52.-0.7112-(-1-osoolf 17,(ar2)3018 (3r2)3 2L (å. 22.G)323. (8a)" 24. _u), 25. -3 26. (2)° 27. 61 28. 53. (-1.86)" + 86 96 3.07(-1-1.86l) (-1.86)4 + 1.596 54,156 62 4 (-4.017) S4. 1044-368) 55. 2.38(-60.7) 2540/1.17+0.806 (26.1 -9.88) 56. 0.513(-2.778) - (-3,67)3+0.889/(1.89-1.09) 29,r, 30.-148 31. (+/ 32. ( 5