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Question: In the early 1960s, radioactive strontium-90 was released during atmospheric testing of nuclear weapons and got into the bones of people alive at the time. If the half-life of strontium-90 is 29 years, what fraction of the strontium-90 absorbed in 1960 remained in people's bones in 2010? [Hint: Write the function in the form Q = Q0(1/2)t/29.]
A car dealer, at a year-end clearance sale, reduces the list price of last year's models by 15%. If a certain model has a discounted price of $8000, what was the list price? How much can be saved by purchasing last year's model?
Either find an equation of the form a ·n x = b in Zn that has a unique solution even though a and n are not relatively prime, or prove that no such equation.
Write an equation for a function that has a graph with the given transformations. the shape y=x2 is vertically strecthed by a factor of 10, and the resulting graph is reflected across the x-axis.
what a subjects resting heart rate would be, given the number of hours they exercise per week. We measured the resting heart rate and average number of hours exercised per week for 4 subjects, resulting in the data below:
In order to boost sales, Quink Inc introduces a new line of Pink Quinks. The revenue equation is given by R(x) = 75 4. x2e-0.09x. What is the maximum revenue?
In a large class, 80 students took a test. When the test papers were rated, it was found that 10% of the students had papers, 23% had B papers, 30% had C papers, 15% had D papers, and the rest failed. How many students failed the test?
Which of the following z-scores is the smallest one in absolute value that leads to rejection of the null hypothesis ?
Does every English sentence have a truth value? (For my proofs class) Please provide a bit of explanation.
MINIMIZING PACKAGING COSTS A rectangular box is to have a square base and a volume of 20 ft3. If the material for the base costs 30?/square foot.
(a) What is the probability that a single randomly-selected shopped for either clothing or electronics yesterday, but not both? (b) Let C = {customers shopping for clothes} and E = {customers shopping for electronics}.
A motorcycle dealership has allocated 90% of its employees to the sales of motorcycles of which 70% of this 90% are male employees, this company has also determined that 80% of all its employees are male.
Then find the dimension of W.
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