Từ các loại phân: NPK (16-8-8), super lân (16% P2O5) và KCl (60% K2O). Hãy tính lượng phân thương phẩm của mỗi loại phân trên để đáp ứng lượng dinh dưỡng cần thiết cho 1ha ớt với công thức được khuyến cáo là 100kg N + 60kg P2O5 + 120kg K2O.

sorry not sure

step-by-step explanation:

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.

5+2x=a

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answer:   y=2x-3

step-by-step explanation: