Answer: 19.1842
Step-by-step explanation:
Answer:
Step-by-step explanation:
(x + y)² = x² + 2xy + y²
(a² + b²)² = (a²)² + 2*a²*b² + (b²)² {x = a² ; y = b²}
= a⁴ +2a²b² + b⁴
Answer:
x = -1
y = -6
Step-by-step explanation:
7x - y = -1 -> y = 1 + 7x
7x + 3y = - 25
Put y = 1 +7x -> 7x + 3(1 +7x) = -25
-> x = -1
-> y = -6
Percent means parts out of 100 so x%=x/100
convert to improper fraction for in x/y form so
2 and 3/8
2=16/8
2 and 3/8=16/8+3/8=19/8
convert bottom number to 100
one way is multiply whole thing by 100/100
19/8 times 100/100=1900/800
divide by 8
237.5/100=237.5%
that is precent
another way is divide completely
19/8=2.375
that is over 1 so convert to over 100 so
2.375/1 times 100/100=237.5/100=237.5%
answe ris 237.5%
