there were n signers of the declaration of independence. the oldest was benjamin franklin, who was y years old. 7 is 10% of y. what was franklins age

70

Step-by-step explanation:

In this problem 7 is 10% of Ben Franklin's age. To solve you must find what 100% percent of his age is. To do this multiply 7 by 10. You do this because 10% times 10 is equal to 100%. Therefore, his age is 70.

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225

  or  

step-by-step explanation:

if the four friends split the cost, p, of the pizza evenly, then each friend pays one-fourth of the cost of the pizza.

the expression is   or