-x-x+7 would be equivalent
Answer:
(x, y) = (-1, 9)
Step-by-step explanation:
A graphical solution can be quick and easy. It shows the solution to be ...
(x, y) = (-1, 9)
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Another suitable method is Cramer's rule. It makes use of a particular pattern of sum of products of coefficients and constants. The denominator in each case is the same sum of products.
x = (5(-29)-(-3)(31))/(5(2)-(-3)(14)) = -52/52 = -1
y = (31(2)-(-29)(14))/52 = 468/52 = 9
table because i'm used to a table graph
:D
Answer:
D. 36 feet
Step-by-step explanation:
One yard is 3 feet
So you do 12*3
which equals 36 ft
So if I understand this correctly, this would look something like this:
A first number
let's call it x
plus twice a second number
let's call the second number y:
x+2y=5
is 5.
this means that x=5-2y!
twice the first number plus the second totals 31.
2x+y=31
from the last one, i know that y=31-2x
and i can insert it into the first equation:
So i know that x=5-2y
and that
2x+y=31
i will substitute x here
2(5-2y)+y=31
remove the bracket
10-4y+y=31
10-3y=31
remove 10 from both sides
-3y=21
then
y=-7
and
x=5-2(-7)=5+14=19