Mario simplified the expression as shown.

which statement explains mario’s error?

Last option

Step-by-step explanation:

1. According to the properties of exponents, you have that:

2. Then, he must simplify the expression as following:

3. Therefore, as you can see, should have also applied the negative exponent to 4 to get

The correct answer option is He should have also applied the exponent -3 to 4 to get .

Step-by-step explanation:

The following expression was to be simplified by Mario:

Given this expression, we need to apply this rule on it in order to simplify:

So we would get:

This would be the right simplification for the given expression but by looking at Mario's work shown, we can conclude that:

He should have also applied the exponent -3 to 4 to get .

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.

ratio is 2 : 9

the answer is three

13.5 : 3