Question: 53 In Exercises 47-52, find the sum. (See Example 5.) 20 26 47. E(21 - 3) 48. (4i + 7) 1=1 1=1 33 31 49.

53

In Exercises 47-52, find the sum. (See Example 5.) 20 26 47. E(21 - 3) 48. (4i + 7) 1=1 1=1 33 31 49. E(6 - 21) 50. (-3-41) 41 39 51. E(-2.3 + 0.17) 52. (-4.1 + 0.47) NUMBER SENSE In Exercises 53 and 54, find the sum of the arithmetic sequence. 53. The first 19 terms of the sequence 9, 2, -5, -12

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