Question

sendo x= raiz.de 1 sobre raiz de 4.e y=raiz de 9sobre raiz de 25,escreva.(v) para verdadeiro e (f)para falsa nas sentenças:

x+y=11/7
x-y+5=49/10
x/3+y/5=43/150
y-x=2/3

Answer 1

x=√1/√4  ⇒ x=1/2   e y=√9/√25  ⇒ y=3/5

a) x+y = 1/2+3/5=5/10+6/10=11/10  F

b) x-y+5=1/2-3/5+5=5/10 - 6/10 +50/10 = 49/10  V

c) x/3 + y/5 = 1/2. 1/3 + 3/5.1/5 = 1/6 + 3/25 = 25/150 + 18/150 = 43/150 V

d) y-x = 3/5 - 1/2 = 6/10 - 5/10 = 1/10 F