Marshall scored 80 on his first quiz and 70 on his second quiz. What was the percent of decrease in his scores?

12.5% Decrease

Step-by-step explanation:

(10/80)*100

it is contrapositive

i could not see the question too well so check yourself again too . this is because i want you to get it correct.

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.