The length of a rectangle is (2x –1) units, and the width is (x − 2) units. the area of the rectangle is 20 square units. what is the length of the rectangle?

a. 0.5 units

b. 3 units

c. 4.5 units

d. 8 units

Length of the given rectangle is 8 units.

Option - D

Solution:

Given that  

Length of a rectangle =

Width of a rectangle =

Area of rectangle = 20 square units  

Need to calculate length of rectangle.

Substituting given value of Area of rectangle and expressions for length and width of rectangle in formula, we get

On solving above equation for x we get

On splitting the middle term in such a way that product of split terms comes as and summation comes as -5x, we get

As length cannot be negative hence we can ignore negative value.

So length is 8 units.

well we know there are 4 clubs in 52 cards so it’s replaced so it should be 3/51

step-by-step explanation: