11-05-2016
Mathematics

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help me on 8 and 9 plz

help me on 8 and 9 plz class=

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byuneri byuneri

11-05-2016

8. first 12 bags for 54m^{2} [/tex]
54 ÷ 12 = 4.5
we know: 1 bag for 4.5m^2
36 ÷ 4.5 = 8
so 36m^2 we must use 8 bags

9. [tex] \frac{5}{8} [/tex]x2 =5x2/8= 10/8 = 5/4 = 1.25

hope it helped you

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