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il63 [147K]
3 years ago
5

Explain how to determine if the two expressions are equivalent using x = 6 and x = 2.

Mathematics
1 answer:
Nataly_w [17]3 years ago
5 0
<span>Two algebraic expressions are said to be equivalent if their values obtained by substituting the values of the variables are same.</span>
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Plz help
mixas84 [53]

x2y + z = 9 \\  \\ 1. \: x + 2y + z +  - 2y = 9 +  - 2y \\ x + z =  - 2y + 9 \\ 2. \: x + z +  - z =  - 2y + 9 +  - z \\ x =  - 2y - z + 9 \\  \\  \\ x + y - z = 5 \\  \\ 1. \: x + y - z +  - y = 5 +  - y \\ x - z =  - y + 5 \\ 2. \: x - z + z =  - y + 5 + z \\ x =  - y + z + 5 \\  \\  \\ 3x - y + 2z = 12 \\ 1. \: 3x - y + 2z + y = 12 + y \\ 3x + 2z = y + 12 \\ 2. \: 3x = y - 2z + 12 \\ 3. \:  \frac{3x}{3}  =  \frac{y - 2z + 12}{3}  \\ x =  \frac{1}{3} y +  \frac{ - 2}{3} z + 4

7 0
3 years ago
Someone help me on this one
juin [17]

It's an isosceles triangle, so the angles at the base are congruent:


m\anlge WXY=m\angle WZY


The triangle XYW is a rectangular triangle.


We know that the sum of the measures of angles in a triangle is 180°.


Therefore we have the equation:


m\angle YWZ+90^o+17^o=180^o\\\\m\angle YWZ+107^o=180^o\ \ \ |-107^o\\\\m\angle YWZ=73^o



Answer: 73

6 0
3 years ago
Is this the right answer?
pychu [463]
Looks correct to me but i'm not 100% sure

6 0
3 years ago
HELLLLLLLLLLLLLLLLLLLLLLLPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP!!!!!!!!!!!!!!!!!!!!!!!!!
salantis [7]
Try A I believe that’s right
5 0
3 years ago
Need ko po answer plssssss
evablogger [386]
It’s really blurry, I can’t help :(
7 0
3 years ago
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