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peachijmin
04.03.2021 •
Mathematics
Finds the value of x and Y.
2x+3y=5
X-2y=-1
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Ответ:
x=1
y=1
Step-by-step explanation:
2x+3y=5eq1
x-2y=-1eq2
therefore: x=-1+2y
Subt. eq 3 into eq2
2x+3y=5
2(-1+2y) +3y=5
-2+4y+3y=5
7y=5+2
7y/7=7/7
y=1
therefore: Subt. y=1 into eq2
x-2y=-1
x-2(1)=-1
x-2=-1
x=-1+2
x=1
Ответ:
1017.36
Step-by-step explanation:
First off, the original answer is incorrect. Don't read it.
The first answer is partially correct.
3.14 × (9 ft)∧2 × 4 ft = 1,017.36 ft∧3