Willisgame1
Willisgame1
14-03-2017
Mathematics
contestada
Value of X?
7x+3x=90?
Respuesta :
Аноним
Аноним
14-03-2017
10x=90
X=9
To check
7 (9) + 3 (9)
63+27
=90
Answer Link
jn33
jn33
14-03-2017
7x+3x=90
7x+x=90-3
7x+x=87
X^2=87-7
X^2=80
(Take the square root of both X^2 and 80)
*answer= 8.94 (round off to whole number =9)
(Proof check yourself)
Answer Link
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