Answer: 108 feet
Step-by-step explanation:
Area of a rectangle = l x w
432 = 3x + x
432 = 4x
432 /4 = x: x = 108 = width
52000=52 thousand
100 pennies=$1
52000/100=$520
Answer:
3x-14xy+13y+4
Step-by-step explanation:
3x – 10xy + 13y – 4xy + 2x2
= 3x-14xy+13y+4
Answer:
8
Step-by-step explanation:
-19 - (-27)
-19 + 27
8
i dont know if this is what you needed, but um yea lol
Answer:
B.
f(x) and g(x) are closed under subtraction because when subtracted, the result will be a polynomial.
Step-by-step explanation:

Assume m>=n WOLOG


Are also a polynomial in general, but maybe in a different degree
Closure under subtraction means, for all polynomials, under the operation of subtraction, it also belongs to polynomials