1) Solve algebraically these simultaneous equations. 5x+3y=27
2x+4y=8

x=?
y=?

2) Solve the simultaneous equations
6x+2y=−3
4x−3y=11

x= ?
y=?

3) Solve the simultaneous equations
3x+2y=4
4x+5y=17

x=?
y=?

4) Solve the simultaneous equations
4x+7y=1
3x+10y=15

x=?
y=?

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Ответ:

babyash12718

25.02.2020

Mathematics

Part A:

176>x>42

because the tem cant be 176 or higher, and it cant be 42 degrees or lower.

Part C:

Because the temperature cannot go below 42 before it freezes, she would not have been able to conduct her research

Step-by-step explanation:

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1) Solve algebraically these simultaneous equations. 5x+3y=27 2x+4y=8 x=? y=? 2) Solve the simultaneous equations 6x+2y=−3 4x−3y=11 x= ? y=? 3) Solve the simultaneous equations 3x+2y=4 4x+5y=17 x=? y=? 4) Solve the simultaneous equations 4x+7y=1 3x+10y=15 x=? y=?