Answer:
Step-by-step explanation:
a)
<u>Area of the frame with picture:</u>
- A = lw
- A₁ = (x + 4)(x + 7) = x² + 11x + 28
<u>Area of the picture:</u>
<u>Area of the wooden frame is the difference of the above values:</u>
- A₃ = A₁ - A₂
- A₃ = x² + 11x + 28 - x² - 3x
- = 8x + 28
b)
<u>When x = 5, the picture frame area is:</u>
- A₃ = 8*5 + 28 = 40 + 28 = 68 in²
Answer:
44
Step-by-step explanation:
We can solve the equation by simplifying it.
, let's square both sides.
. Now lets subtract 5 from both sides.
.
Hope this helped!
It would be 10x10 =100 or in other word 10 times itself. Also known as 10 with the 2 hanging over the 10.
