Half-perimeter=length+width=width+3+width=43, 2×width=40 so width=20cm and length=23cm.
Answer:
A
Step-by-step explanation:
For this case we must indicate the factors of the following expression:

To factor we must find two numbers that when multiplied result in -20 and when added, result in -12.
There are no two numbers that meet this condition. Thus, the expression is not factorizable with rational numbers.
Answer:
The expression is not factorizable with rational numbers.
15-3(4-2x)-7(x-8) = 15 - 12 + 6x -7x +56 = -x +59
15-3(4-2x)-7(x-8) = - x + 59
Answer:
4=4
Step-by-step explanation: