Question

va rog,rapid! dau coroana!​

Answer 1

Răspuns:

Ai toate rezolvările făcute pas cu pas

Answer 2

a) $0,2x + 1,5^{2} = 7,35\\0,2x + 2,25 = 7,35\\0,2x = 7,35 - 2,25\\0,2x = 5,1\\x= 5,1 : 0,2\\x = 25,5$

b) $0,5x - 0,8^{2} = 3,96\\0,5x - 0,64 = 3,96\\0,5x = 3,96 + 0,64\\0,5x = 4,6\\x= 4,6 : 0,5\\x= 9,2$

c) $0,4x + 1,3^{2} = 8,59\\0,4x + 1,69 = 8,59\\0,4x = 8,59 - 1,69\\0,4x = 6,9\\x = 6,9 : 0,4\\x = 17,25$

d) $2,5x - 0,4^{3} = 5,616\\2,5x - 0,064 = 5,616\\2,5x = 5,616 + 0,064\\2,5x = 5,68\\x = 5,68 : 2,5\\x = 2,272$

e) $0,7^{3} + 0,8x = 5,023\\0,343 + 0,8x = 5,023\\0,8x = 5,023 - 0,343\\0,8x = 4,68\\x = 4,68 : 0,8\\x = 5,85$

f) $1,6x - 0,6^{3} = 5,204\\1,6x - 0,216 = 5,204\\1,6x = 5,204 + 0,216\\1,6x = 5,42\\x = 5,42 : 1,6\\x = 3,3875$

Sper că te-am ajutat!