Answer:
BC = 35 units
Step-by-step explanation:
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Answer:
Rewrite the first equation as x = 36 – 3y.
Step-by-step explanation:
x + 3y = 36 (1)
4x + 5y = 9 (2)
Using substitution method
From (1)
x = 36 - 3y
Substitute x = 36 - 3y into (2)
4x + 5y = 9
4(36 - 3y) + 5y = 9
144 - 12y + 5y = 9
- 12y + 5y = 9 - 144
-7y = -135
y = -135 / -7
y = 19.3
There is an error with the second equation, 4x + 5y can not be equal to 9
Nevertheless, the first step when solving by substitution is:
Rewrite the first equation as
x = 36 – 3y.
I think it’s 13 not sure tho(put a degree symbol on 13)
Answer:
x=-3
Step-by-step explanation:
X+5=18
first get rid of the 5
so X+5-5=18-5
which makes X=13
if any questions please ask