Suppose that Polonium decays at a rate propotional to the amount present. If a sample of

Polonium -210 decays so that there is 50 gr left after 140 days and 25 gr after 280 days, how much Polonium

did the sample have to begin with?

A balloon is rising at a constant speed 4 m/sec. A boy is cycling along a straight road at a speed

of 8 m/sec. When he passes under the balloon, it is 36 metres above him. How fast is the distance between

the boy and balloon increasing 3 seconds later?

A clinical trial was conducted using a new method designed to increase the probability of conceiving a boy. As of this​ writing, 297 babies were born to parents using the new​ method, and 241 of them were boys. Use a 0.01 significance level to test the claim that the new method is effective in increasing the likelihood that a baby will be a boy. Identify the null​ hypothesis, alternative​ hypothesis, test​ statistic, P-value, conclusion about the null​ hypothesis, and final conclusion that addresses the original claim. Use the​ P-value method and the normal distribution as an approximation to the binomial distribution.

itial Post:

An 11-year-old boy presents to the emergency room (ER) with a 4-inch laceration on his right arm. He was with his friends doing bicycle stunts when he fell off his bike and cut his arm on a rusty nail from the ramp. In addition, his wrist is swollen, bruised, tender to touch, and warm, with limited mobility. He will most likely need stitches to close the laceration and a splint for the sprain.

In your initial post answer the following questions:

1. After treatment, as he prepares to leave, you give him last-minute care instructions for laceration and sprain. What would be important for this boy to know to prevent further health concerns with his injuries?
2. The boy concernedly asks you, “My uncle lost his foot because he got gangrene in it. Am I going to lose my arm if I get an infection in this cut?” How would you respond?

What is the overall point of the graphic that showed that market share = product position x marketing effort?

Perform a written and graphic analysis of the relationship between capital, investment demand and savings supply. In your analysis present the different movements of investment demand and savings supply. That is, an increase in the demand for investment and a contraction in the demand for investment, versus an increase in the supply of savings and a contraction in the supply of savings, with the macroeconomic equilibrium.

The data in the table below gives sales revenue for Continental Divide Mining from 1995 to 2005.

YEAR YEARS SINCE 1990 SALES REVENUE (MILLIONS)
1995 2.6155
1998 3.3131
1999 3.9769
2000 4.5494
2001 4.8949
2002 5.1686
2003 4.9593
2005 4.7489

(a) Complete the missing column in the table.
(b) Use Excel to determine the quadratic regression model, y, that best represents sales revenue as a
function of, x, the number of years since 1990. Round three decimal places.

(a) Find the year in which there is maximum revenue and find the maximum revenue. Write solution as a
complete sentence.

1. About 1 in 5 solar systems outside of our solar system has an Earth-sized planet that could support life as we know it.

true

false

2. A major factor in the spread of transspecies hybrid viruses is

A. lack of vaccines against these novel viruses

B. host organisms lack antibodies against these novel pathogens

C. there is no herd immunity against novel pathogens

D. all of the above

9. The Drake Equation describes the odds of finding intelligent life elsewhere in own on galaxy.

true

false

15. Cities are often hotter than their surrounding areas because heat is trapped in concrete and asphalt, a phenomenon known as the

A. heat dessert

B. city sauna

C. urban heat island effect

D. suburban affluence

17. Due to Mars having 38% less gravity than Earth, muscle mass and bone density

A. would increase in Martian humans

B. decrease in Martian humans

C. remain the same in Martian humans

18. During aging, the reduction of HCL by the stomach

A. causes constipation

B. increases appetite

C. reduces the adsorption of vitamin B12

D. increases the size of stomach

26.Due to the difference in ambient light on Mars

A. eyes will enlarge

B. eyes will get smaller

C. eyes will not change

1. About 1 in 5 solar systems outside of our solar system has an Earth-sized planet that could support life as we know it.
true
false
2. A major factor in the spread of transspecies hybrid viruses is
A. lack of vaccines against these novel viruses
B. host organisms lack antibodies against these novel pathogens
C. there is no herd immunity against novel pathogens
D. all of the above
9. The Drake Equation describes the odds of finding intelligent life elsewhere in own on galaxy.
true
false
15. Cities are often hotter than their surrounding areas because heat is trapped in concrete and asphalt, a phenomenon known as the
A. heat dessert
B. city sauna
C. urban heat island effect
D. suburban affluence
17. Due to Mars having 38% less gravity than Earth, muscle mass and bone density
A. would increase in Martian humans
B. decrease in Martian humans
C. remain the same in Martian humans
18. During aging, the reduction of HCL by the stomach
A. causes constipation
B. increases appetite
C. reduces the adsorption of vitamin B12
D. increases the size of stomach
26.Due to the difference in ambient light on Mars
A. eyes will enlarge
B. eyes will get smaller
C. eyes will not change

1. On January I , 2008 Opko Printing Company purchased a new printing press for $80,000 with an estimated residual value of $8,000. It depreciates the press over a five year period using the declining balance method of depreciation. (a) The depreciation expense for Dec. 31 2012 is

On January 1, 2018, Hobart Mfg. Co. purchased a drill press at a cost of $39,300. The drill press is expected to last 10 years and has a residual value of $6,300. During its 10-year life, the equipment is expected to produce 500,000 units of product. In 2018 and 2019, 26,500 and 87,000 units, respectively, were produced. Required: Compute depreciation for 2018 and 2019 and the book value of the drill press at December 31, 2018 and 2019, assuming the units-of-production method is used. (Round depreciation per unit to 2 decimal places.)