Find the value of a. Find the value of the marked angles.
There are 2 angles (5a+13) and (2a+70) I tried to make an equation 5a+13+2a+70+180. Right now I'm stuck. Am I on the right track?
What is the third angle equal to?
there is no third angle
Is there a triangle?
Is the triangle right-angles?
Do your 2 angles form a straight line?
There has to be more information here, your question makes no sense otherwise.
Yes, you are on the right track. To find the value of "a" and the marked angles, you need to set up an equation and solve it.
The equation you started with, 5a + 13 + 2a + 70 + 180, is a good starting point. However, in order to find the value of "a," you need to solve this equation.
Combine like terms on the left-hand side of the equation: 5a + 2a = 7a.
Apply the distributive property to group the terms on the right-hand side of the equation: 13 + 70 + 180 = 263.
Now, your equation becomes: 7a + 263 = 180.
To isolate "a," subtract 263 from both sides of the equation: 7a = -83.
Finally, divide both sides of the equation by 7 to solve for "a": a = -83/7.
So, the value of "a" is approximately -11.86.
To find the value of the marked angles, substitute the value of "a" back into the expressions:
Angle 1 = 5a + 13 = 5(-11.86) + 13 ≈ -53.7 degrees.
Angle 2 = 2a + 70 = 2(-11.86) + 70 ≈ 46.28 degrees.
Therefore, the value of angle 1 is approximately -53.7 degrees, and the value of angle 2 is approximately 46.28 degrees.