Question

(2x+5)° and (5x-30)° are the complimentary angles. Find the value of x. ​

Answer 1

Answer:

16.43

Step-by-step explanation:

2x + 5 + 5x - 30 = 90

7x - 25 = 90

x = 115/7 = 16.43

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Answer 2

$(2x + 5) + (5x - 30) = 90 \\ \\ 2x + 5x + 5 - 30 = 90\\ \\ 7x - 25 = 90 \\ \\ 7x = 90 + 25 \\ \\ 7x = 115 \\ \\ x = \frac{115}{7}$