Answer:
d/2 = r if you are talking about circles, if that's the case then the r would be 5
The estimated portion of light bulbs that last more than 500 hours will be
x=∑xn=224/430=0.521=52.1%
Answer: D this would be after you have simplified it.
Step-by-step explanation:
Your answer should be
x=−2−2√6, −2+2√6
