B. I am so sorry if it is not right
Answer:
4
Step-by-step explanation:
picture attached as explanation
We can see through alternate interior and exterior angles, corresponding angles, and vertical angles what the measures are.
X^2 -61 =20
X^2= 81x =9 x=-9
The empirical rule states that approximately 68/95/99.7% of a normal distribution lies within 1/2/3 standard deviations. So the answer is 68%.
Answer:
Step-by-step explanation:
1)140
2)70