Answer:
The sum of interior angles in a triangle is 180°.
So we just have to add Al the angles and equate them to 189°
Step-by-step explanation:

Answer:
The answer is C.
Step-by-step explanation:
Simplify the expression:
5^2 is 25.
25 + 4 is 29.
Hope this helps!
2/5 in decimal form would be 0.4
Answer:
Step-by-step explanation:
what is the question that its asking?
To solve this, plug 2b+1 in for a. :
4(2b+1)-5. Solve for b.
First use the distributive property:
8b+4-5=?
Combine like terms:
8b-1=?
Solve for b.
add 1 to both sides.
8b=1
Divide both sides by 8.
b=1/8