If you know that 1% of a population has a certain disease. A test was made. This test is positive in 95% of the people with the disease and is also (falsely) positive in 2% of the people free from the disease. If Ali was selected at random from this population, has tested positive, what is the probability that he doesnt have the disease?

The average human heart beats 1.15 \cdot 10^51.15⋅10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65⋅10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year.how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.

The dolphins at the webster are fed 1/2 of a bucket of fish each day the sea otters are fed 1/2 as much fish as the dolphins how many buckets of fish are the sea fed each day? simplify you answer and write it as a proper fraction or as a whole or mixed number

How are sas and sss used to show that two triangles are congruent?