Black king = 2/52 = 1/26
white queen ?? There is no white queen in a deck of cards
club = 13/52
heart = 13/52
spade or diamond = 26/52 = 13/26 = 1/2
Half-life (t½) is the amount of time required for a quantity to fall to half its value as measured at the beginning of the time period.
(t½) of C-14 is 5730 years, which means that after 5730 years half of the sample would have decayed and half would be left as it is.
After 5730 years ( first half life) 70 /2 = 35 mg decays and 35 g remains left.
After another 5730 years ( two half lives or 11460 years) 35 /2 = 17.5mg decays and 17.5 g remains left .
After another 5730 years ( three half lives or 17190 years) 17.5 /2 = 8.75mg decays and 8.75g remains left.
after three half lives or 17190 years, 8.75 g of C-14 will be left.
Answer: $231.5
Step-by-step explanation:
Michael earns 5% of sales as bonus when sales cross $750. In given situation, sales are more than that so he'll get 5% of the sales, so equation becomes:
Earning= Salary + 5% of sales
Earning= 125+ 5% of 2130
Earning= 125+ 2130x5/100
Earning= 125+ 106.5
Earning = $231.5