Provide an appropriate response.A certain radioactive isotope decays at a rate of 0.225% per year. Determine the half-life of this isotope, to the nearest year.
A. 134 years
B. 308 years
C. 222 years
D. 3 years
Answer: B
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Write the number in words.64,568,009
A. Sixty-four million, five hundred thousand, sixty-eight hundred, nine B. Sixty-million, five thousand sixty-eight hundred, nine C. Sixty million, forty-five thousand, sixty-eight hundred and nine D. Sixty-four million, five hundred sixty-eight thousand, nine
Use the sum-of-the-years'-digits method of depreciation. Round to the nearest dollar.Scot Cleaners bought a new trouser press for $7000 and estimates its life at 4 years at which time the salvage value is expected to be $700. Find the amount of depreciation each year.
A. $2520, $1890, $1260, $630 B. $3500, $1750, $875, $175 C. $1575, $1575, $1575, $1575 D. $2800, $2100, $1400, $700
Subtract the polynomials.(-5x6 + 5x8 + 4 + 6x7) - (5 + 8x7 + 7x8 + 3x6)
A. -2x8 - 2x7 - 8x6 - 1 B. 12x8 + 14x7 - 2x6 - 1 C. 12x8 + 14x7 - 2x6 + 9 D. -2x8 + 14x7 - 2x6 + 9
Find the missing factor.35x2 + 16xy - 12y2 = (5x - 2y)( )
A. 6x - 7y B. 6y - 7x C. 7x + 6y D. 7 + 6xy