Six more than nine times a number is 456

x=50

Step-by-step explanation:

1) Rewrite the problem as an equation: (x will be "a number")

9x+6=456

2) Subtract 6 from both sides:

9x=450

3) Divide both sides by 9:

x=50

answer: bearing in mind that a rectangle has a perimeter of length + length + width + width.

step-by-step explanation:

p = perimeter

l = length

x=width

p = 2l + 2x

p = 2(l+x)     < ==== perimeter of the base of the box.