Answer:E. (126 + 10.5x) square feet
Step-by-step explanation:
The length of the living room is 12 feet.
The width of the living room is
10 1/2 feet = 10.5 feet.
The length of the room is being expanded by x feet. This means that the new length of the room would be
12 + x = (12 + x) feet
The formula for determining the area of a rectangle is expressed as
Area = L × width.
Therefore, an expression to represent the new area of the living room in square feet and the expanded form of the expression would be
Area = 10.5(12 + x)
Area = 126 + 10.5x
Answer:
A
Step-by-step explanation:
Answer:
i think it x² so it can be. ot correct
Answer:
Mirror
Step-by-step explanation:
Answer:
Option B is correct
Step-by-step explanation:
Doug is x years old, so Byron is x+3 years old. The product of their ages would then be x times x+3:
x(x+3) = 40
x2 + 3x = 40
x2 + 3x + 40 = 0
Now, factor the equation:
(x+8)(x-5) = 0
Then, solve for both values of x:
x+8 = 0
x = -8
x-5 = 0
x = 5
As no one can have a negative age, we simply disregard x=-8 as invalid. Therefore, Doug is 5 years old & Byron must be 5+3 - or 8 years old.
<h3>Hope it is helpful...</h3>