Question

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Answer 1

Answer:

A resource is a physical material that humans need and value such as land, air, and water. Resources are characterized as renewable or nonrenewable; a renewable resource can replenish itself at the rate it is used, while a nonrenewable resource has a limited supply.

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Step-by-step explanation:

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Answer 2

Step-by-step explanation:

Let the length and breadth of the rectangle be x and y units respectively. Then,

Area =xy sq. units.

If length is reduced by 5 units and the breadth is increases by 3 units, then area is reduced by 9 square units.

∴xy−9=(x−5)(y+3)

⇒xy−9=xy+3x−5y−15

⇒3x−5y−6=0 ...(i)

When length is increased by 3 units and breadth by 2 units, the area is increased by 67 sq. units.

∴xy+67=(x+3)(y+2)

⇒xy+67=xy+2x+3y+6

⇒2x+3y−61=0 ...(ii)

Thus, we get the following system of linear equations:

3x−5y−6=0

2x+3y−61=0

by cross multiplication :

‍♀ you can solve here. by yourself ‍♀

Hence, the length and breadth of the rectangle are 17 units and 9 units respectively.