Question

A rectangle has a length of 4

units and a width of x + 3 units.
If the area is 42, what is the
value of x?

Answer 1

To find the value of x in the given problem, we can use the formula for the area of a rectangle, which is calculated by multiplying the length and width.

Given:
Length = 4 units
Width = x + 3 units
Area = 42 square units

We can set up the equation:

Area = Length * Width
42 = 4 * (x + 3)

Now we can solve for x:

42 = 4x + 12
Subtracting 12 from both sides:
30 = 4x
Dividing both sides by 4:
x = 7.5

Therefore, the value of x is 7.5 units.
Hope it helps