8. first 12 bags for 54m^{2}
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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.

x2 =5x2/8= 10/8 = 5/4 = 1.25
hope it helped you
The absolute value is the value of the number without the sign. So in this case it's 3 and -3
Answer:
2.1 + 2x = 7.5
Step-by-step explanation:
4/20 is 0.20, which is equivalent to 20%.
Remember that 1.0=100%, 0.5=50%, 0.2=20%, 0.05=5%, and so on.
Answer:
34 and 30
Step-by-step explanation:
8 times 3 = 34
and 34-4=30
divide 8 by 2 and you'll get 4
so, 34-4=30