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zaleemawhite
27.01.2021 •
Mathematics
Can someone please help
select all the values of k that shift
to the right when
select all that apply...
answers:
a: 132
b: 560
c: -130
d: -458
e: -214
f: 210
Solved
Show answers
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Ответ:
answer
the correct answer is the second option
explanation
given the two equations;
and
we can either decide to eliminate
or
.
if we want to eliminate
, then we need to make the coefficients of
the coefficient of
in equation (2) is
and that of equation (1)
.
so we multiply equation (1) by
and equation (2) by
.
now that the coefficients are the same, subtracting the two equations will eliminate
from the equation.
also, multiplying the first equation by 2 and the second equation by 9, and then subtract will eliminate![t](/tex.php?f=t)
therefore the correct option is b.
note option c will not eliminate
, when we add. that makes it incorrect.