B. 31°, 43°, 106°
since all angles of a triangle add up to 180°, you combine all of the equations to equal 180 and solve for X. the equation you would get it 3x+1+11x-4+5x-7=180. this simplifies to 19x-10=180. then you solve for x, and it is 10. then, you plug 10 into all of the equations separately to find the angles. therefore, the answer is B
Answer:
X= $3.99
Step-by-step explanation:
X is the value of each book
1:10 or 100:1000 so the point is to just add one zero to each side and you'll get it right
Answer:
91 hours
Step-by-step explanation:
Add 12 to itself 8 times and then add 7 once
