Answer:
C.) 14
Step-by-step explanation:
Look at the triangle: angles b and c have the same arch, so they are congruent.
In a triangle, if two angles are congruent, then the triangle is isosceles, having two equal sides.
The sides opposite the congruent angles are congruent:
∠B → opposite side → AC
∠C → opposite side → AB
The sides AB and AC are equal. Make an equation:
![AB=AC\\\\2x=3x-7](https://tex.z-dn.net/?f=AB%3DAC%5C%5C%5C%5C2x%3D3x-7)
Simplify the equation, solving for x. Add 7 to both sides:
![2x+7=3x-7+7\\\\2x+7=3x](https://tex.z-dn.net/?f=2x%2B7%3D3x-7%2B7%5C%5C%5C%5C2x%2B7%3D3x)
Subtract 2x from both sides:
![2x-2x+7=3x-2x\\\\7=x](https://tex.z-dn.net/?f=2x-2x%2B7%3D3x-2x%5C%5C%5C%5C7%3Dx)
The value of x is 7. Insert the value of x into the given length of AC:
![AC=3(7)-7](https://tex.z-dn.net/?f=AC%3D3%287%29-7)
Simplify multiplication:
![AC=21-7](https://tex.z-dn.net/?f=AC%3D21-7)
Subtract:
![AC=14](https://tex.z-dn.net/?f=AC%3D14)
Therefore, the length of the line segment AC is 14.
:Done
Answer:
y=5x
Step-by-step explanation:
A product means multiplication, and you need to multiply x by 5 in order to make the product have a factor of 5.
Answer:
The line AB, with A(Ax, Ay), B(Bx, By) and midpoint M(Mx, My) satisfying:
Ax + Bx = 2Mx
Ay + By = 2My
=>
2 + Bx = 2*1
5 + By = 2*2
=> Bx = 0
=> By = -1
=> B(0, -1)
Hope this helps!
:)
Answer:
the first one I guess
Step-by-step explanation:
Answer:
1) D
2) A
Step-by-step explanation: