Answer:
The proportion is 2/7 = 12/42
x = 12
The answer is 12
Step-by-step explanation:
We have xy = 28, x² + y² = 65 and x³ + y³ = 407.
Since (x + y)(x² - xy + y²) = x³ + y³,
x + y = (x³ + y³)/(x² + y² - xy)
= (407) / [(65) - (28)]
= 407 / 37
= 11.
Hence the sum of the numbers is 11.
Answer:
1/2
Step-by-step explanation:
$63.54 is the price after the discount and tax
Answer:
y=-3x-3
Step-by-step explanation:
