What is the measure of angle A in the triangle?
(2x-10)
70%B
Enter your answer in the box.
| M (x + 30)

A = 50

Step-by-step explanation:

The sum of the angles of a triangle is 180 degrees

A+B+C =180

2x-10 + 70 + x+30 = 180

Combine like terms

3x +90 = 180

Subtract 90 from each side

3x +90-90 = 180-90

3x= 90

Divide each side by 3

3x/3=90/3

x =30

We want to find A

A =2x-10

   = 2*30 -10

   =60-10

  =50

there are many solutions.

step-by-step explanation:

step 1: simplify both sides of the equation.

4x+6=4x^2+10x−4

step 2: subtract 4x^2+10x-4 from both sides.

4x+6−(4x^2+10x−4)=4x^2+10x−4−(4x^2+10x−4)

−4x^2−6x+10=0

step 3: factor left side of equation.

−2(2x+5)(x−1)=0

step 4: set factors equal to 0.

x=-5/2 or x=1

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c

step-by-step explanation: