One irrational number between 5 and 7 is

.
By the Pythagorean Theorem:
L^2=20^2+15^2
L^2=400+225
L^2=625
L=25 m
1/5(25-5a)=4-a
⇔5-a=4-a
<span>NO SOLUTION</span>
Answer: x³+y³=180
Step-by-step explain: let's remember the formula x³+y³=(x+y)(x²-xy+y²) and also x³+y³=(x+y)³-3xy(x+y) then