2.) 5/4 is rational because it has an exact decimal and it stops. This is why it is rational. Hope this helps!
Answer:
1
Step-by-step explanation:
1+10+19+28=58
sum=58+n
58+16=74
the answer is 74
-1 us a answer for your questions or support
Remember, all inside angles in a triangle add up to 180°
So:
3x+5x+7+x+2=180
Combine like terms
9x+9=180
Subtract 9 from both sides
180-9=171
9x=171
Divide by 9 on both sides
171/9=19
x=19
Plug it into all the angle measures.
Angle X: x+2, 9+2=11, Angle X=11°
Angle Y: 5x+7, 5(9)+7=52, Angle Y=52°
Angle Z: 3x, 3(9)=27, Angle Z=27°
The answer is D) -3 Hope this help