1) Southwest part of 2nd & 4th street = 130 [ vertically opposite of Corresponding so will be equal.
2) Southeast part of 2nd & 4th street = 190 - 130 = 50 [ supplementary with previous one ]
3) Northwest part of 2nd & 4th street = 50 [ Vertically opposite of 2nd one ]
4) Northeast part of 2nd & 4th street = 130 [ Corresponding angles ]
[ Final Answers are in bold ]
Hope this helps!
Answer:
x=2
HPT 3x+5y=6 (1) và 2x+y=4 (2)
Nhân phương trình (2) với 5 để hệ số y của 2 phương trình bằng nhau. Ta có:
(2)⇔ 10x+5y=20(3)
Trừ (3) cho (1), có: 7x+0y=14⇒x=2
Answer:
Step-by-step explanation:
x=-2, x=3
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x^2+5x+6=(-2)^2+5(-2)+6=(-2)(-2)-10+6=4-10+6=-6+6=0
x^2+5x+6=3^2+5(3)+6=9+15+6=24+6=30
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x^2-x-6=(-2)^2-(-2)-6=4+2-6=6-6=0
x^2-x-6=3^2-3-6=9-3-6=6-6=0
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The equality used is Subtraction property of equality
Option A is correct
Step-by-step explanation:
We need to identify which option best explains or justifies Step 1.
Step 1 is: 
The given equation is: 
To get the equation for step 1 we need to subtract c on both sides of equation i.e using subtraction property of equality
So, The equality used is Subtraction property of equality
Option A is correct.
Keywords: Solving Quadratic Equations
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