Nepnep682
27.08.2019 •
Mathematics
Which sequence is generated by the function f(n+1)= f(n) -2 for f(-1)=10
a.-10,-12,-14,-16,-18,
b.-2,8,18,28,
c.8,18,28,38,
d.10,8,6,4,2
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Ответ:
To solve this system, we can use substitution.
x + 6y = 61
x = 61 - 6y
Now we substitute into the other equation.
4 (61 - 6y) - 5y = -17
244 - 24y - 5y = -17
244 -29y = -17
29y = 261
y = 9
Now we find x.
x + 6 (9) = 61
x + 54 = 61
x = 7
That means the solution to this system is (7, 9)