Ava Ethan Jacob and Samantha are cousins. One of them is 10 years old, one of them is 20 years old, one of them is 30 years old and the other one is 40. The sum of Ava's age and Ethan's age is 50. The sum of Ethan, Jacob and Samantha's age is 60. If Samantha is older than Jacob, how old is Samantha

step-by-step explanation:

hans did not square the 40-unit side; he merely multiplied it by 2.   incorrect.

answer: -10

step-by-step explanation:

s(t) = 1 - 10t

s(x) = 1 - 10x

s(x + h) = 1 - 10(x + h)

            = 1 - 10x - 10h

s(x + h) - s(x) = 1 - 10x - 10h - (1 - 10x)

                      = 1 - 10x - 10h - 1 + 10x

                      = -10h

= -10