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vova2212 [387]
3 years ago
14

Pls help! Error Analysis problem

Mathematics
2 answers:
Gennadij [26K]3 years ago
7 0

Answer:

Ana made a mistake from line 2 to 3

Step-by-step explanation:

charle [14.2K]3 years ago
6 0

Answer:

Ana made a mistake from line 2 to 3

Step-by-step explanation:

From line 2 to 3, on the left side, ana <u>added</u> 2 and 3 but completely ignored the - in front of the 3. the correct answer would have been<u> -x - 21 = 3x + 19</u>

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4 years ago
The solution to the system -2x+5y=-15 and 5x+2y=-6 is what
cupoosta [38]

Step-by-step explanation:

−2x+5y=−15 and 5x+2y=−6

Rewrite equations:

−2x+5y=−15;5x+2y=−6

Step: Solve−2x+5y=−15for x:

−2x+5y=−15

−2x+5y+−5y=−15+−5y(Add -5y to both sides)

−2x=−5y−15

−2x−2=−5y−15−2(Divide both sides by -2)

x=52y+152

Step: Substitute52y+152forxin5x+2y=−6:

5x+2y=−6

5(52y+152)+2y=−6

292y+752=−6(Simplify both sides of the equation)

292y+752+−752=−6+−752(Add (-75)/2 to both sides)

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292y292=−872292(Divide both sides by 29/2)

y=−3

Step: Substitute−3foryinx=52y+152:

x=52y+152

x=52(−3)+152

x=0(Simplify both sides of the equation)

Answer:

x=0 and y=−3

8 0
3 years ago
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Ahat [919]

Answer:

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Step-by-step explanation:

8 0
3 years ago
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Can you please say that in english?
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Answer:

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Step-by-step explanation:

4 0
3 years ago
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