We can calculate the age by using the formula: final amount=initial amount*(1/2)^(time/half-life), or t=ln(final amount/initial amount)/(-0.693)*half-life. The half life of C-14 is 5730 years, and final amount=initial amount is 51% or 0.51, so t=ln(0.51)/(-0.693)*5730=5567 years approximately.
It measures 8.5 by 11.0 inches (215.9 by 279.4 mm). US Letter size paper is a standard defined by the American National Standards Institute (ANSI).
Total= 2838
x= # of children
3x+5= # of women
4(3x+5)-3= # of men
x + (3x+5) + 4(3x+5)-3= 2838
multiply 4 by 3x+5 first
x + (3x+5) + (4*3x) + (4*5) - 3= 2838
combine like terms
4x + 5 + 12x + 20 - 3= 2838
16x + 22= 2838
subtract 22 from both sides
16x= 2816
divide both sides by 16
x= 176
ANSWER:
# Children= x= 176
# Women= 3x+5= 3(176)+5= 533
# Men= 4(3x+5)-3=4(3(176)+5)-3= 2129
CHECK:
#children + #women + #men= 2838
176 + 533 + 2129= 2838
2838= 2838
Hope this helps! :)
Answer:
The sum of the number of faces and number of vertices is equal to the sum of two and the number of edges.
