Which statement can be represented by 2/5 ? a) as sandy prepared for her dinner party, she set two tables with five chairs each. b) greg cut the large pizza into ten slices, and ate four of them before going to bed. c) for each braided bracelet she made for fifteen classmates, mallory added six beads. d) kristi cut two cakes into five slices each and gave half of the slices to friends at work.

B) Greg cut the large pizza into ten slices, and ate four of them before going to bed.

Step-by-step explanation:

4/10 of the pizza is equivalent to 2/5

The rule which allows us to change the sign of an exponent is called the negative exponent rule.

Step-by-step explanation:

Consider the provided information.

The negative exponent rule is the rule which allows to change the sign of an exponent.

According to negative exponent rule: A negative exponents in the numerator moved to the denominator and become positive exponents.

If A negative exponents in the denominator moved to the numerator and become positive exponents.

Hence, the required statement is: The rule which allows us to change the sign of an exponent is called the negative exponent rule.