The weights of steers in a herd are distributed normally. the standard deviation is 200 lbs and the mean steer weight is 1100 lbs. probability find the probability that the weight of a randomly selected steer is between 760 and 1280 lbs. (round your answer to 4 decimal places) normal table -infinite to -z normal table - infinite to z

What is the value of x in the equation 6(x + 1) – 5x = 8 + 2(x – 1)?

The rate of decay of a radioactive substance depends upon the amount present initially. the mass y (mg) of the radioactive substance cobalt-60 present in a sample at time t (years) is represented by the exponential equation y=50e −0.1315 t . answer the following questions in complete sentences. 1. how does the exponential equation above compare to the equation for simple interest that is compounded continuously? explain the similarities. 2. what is the initial amount of cobalt-60 in the sample? 2. how much cobalt-60 is left after 8.4 years? show your work. 3. what would be the y-intercept of the graph? what does it represent? 4. after how many years will the amount of cobalt-60 left be 6.25 mg? explain what happens to the cobalt-60 after 50 years? 5. discuss some “real-world” examples and uses of cobalt-60

The size of a certain cell is 2.5*10^-9m. another cell is 1.5*10^3 times larger. how large is the larger cell in scientific notation?