All per-unit concepts rely on ratios, meaning (a. division, b. multiplication) , to provide a type of measurement.

Option: A is the correct answer.

( A. Division)

Step-by-step explanation:

We know that the speed of a person ;if a person travels 10 km in 1 hour is given as:

10 Kilometer per hour ( km/hr).

Since, the speed is defined as:

( so, the speed is the ratio of distance to time i.e. we can say that distance divided by time)

So, the unit All per-unit concepts rely on ratios, meaning division.

2 x^2 -3x+p

sum of roots = 3/2

let other root be x

3+ x = 3/2

x= 3/2 - 3 = -3/2

product of roots = p/2

3× -3/2 = p/2

-9 = p

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i dont know it

step-by-step explanation: