jay47374 jay47374

04-06-2019
Mathematics

contestada

Solve by extracting roots. Round your answers to two decimal places.

5a² - 85 = 2.2a² - 30

Respuesta :

Desmariesin Desmariesin

04-06-2019

Answer:

2.8a = 7.4

Step-by-step explanation:

5a² - 85 = 2.2a² - 30

+ 85 = + 85

5a² = 2.2a² +55

- 2.2a² = -2.2a²

2.8a² = 55

√2.8a² = √55

2.8a = 7.4

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