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:
17x−5 =85 3x+5 =15 8x-3= -24 here you can use this to find your awnser
Step-by-step explanation:
Answer:
170 cm
Step-by-step explanation:
160+.06*160=160+9.6=169.6
ANSWER: B)198
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