![Mathematics](/tpl/images/cats/mat.png)
Mathematics, 18.11.2019 09:31, Savageboyn
Galena is solving the following system. 3x+2y+3z =5 7x+y +7z=-1 4x-4y-z=-3
step 1 she multiplies equation (3) by 3 and adds it to equation (1)
step 2 she multiplies equation (3) by -7 and adds it to equation (2)
which statement explains galena’s mistake?
1 she adds equation 1 instead of equation 2 in step 1
2 she does not multiply equation 3 in step 1 by the correct value
3 she did not multiply equation 3 in step 2 by the correct value
4 she added equation 2 instead of equation 1 in step 2
![answer](/tpl/images/cats/otvet.png)
Answers: 3
Other questions on the subject: Mathematics
![image](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 16:00, Xghoued2056
Apark is in the shape of a rectangle. the park authorities are planning to build a 2-meter-wide jogging path in the park (shown as the shaded region in the image). what is the area of the jogging path? plz
Answers: 1
![image](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 18:00, sbailey0962
Sarah used her calculator to find sin 125 degrees. she wrote down sin sin125 degrees.57. how could sarah recognize that her answer is incorrect?
Answers: 1
![image](/tpl/images/cats/mat.png)
![image](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 20:00, ashl3yisbored
The length of the line segment joining the midpoints of sides ab and bc of the parallelogram abcd is 10. find the length of diagnol ac
Answers: 3
Do you know the correct answer?
Galena is solving the following system. 3x+2y+3z =5 7x+y +7z=-1 4x-4y-z=-3
step 1 she multipl...
step 1 she multipl...
Questions in other subjects:
![Konu](/tpl/images/cats/ekonomika.png)
![Konu](/tpl/images/cats/fizika.png)
![Konu](/tpl/images/cats/ekonomika.png)
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 27.08.2021 01:00
![Konu](/tpl/images/cats/obshestvoznanie.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 27.08.2021 01:00
![Konu](/tpl/images/cats/ap.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 27.08.2021 01:00