ronny

if 5/6th of a radioactive sample decay in 70 years and 1/6th remain. how can you find the half life without knowing the decay constant can you help?

what is the predicate for the following sentence: China is one of the worlds biggest countries

linen scrolls contain 80.9% of Carbon-14. how old are the scrolls if the half-life for deacy is 5.73X10^3?? plz tell me what type of equation to use.

100g of bone contain ratio of 14C and 12C. 6.8% 14C is present in the living tissue, how old was the skeleton? [for 14C, half-life is 5.73x10^3 years] please help me choose an equation for this type of question.

Your spacecraft is in a circular, geostationary orbit around earth and you would like to fly to the moon. Draw a suitable Hohmann transfer orbit that will get you there. How long does the journey take? (Neglect the gravitational fields of the moon and the...

4+2(5x-8)=ax+b

A building has a height of 125 meters and a length of 80 meters. On a scale drawing of the building, the height is 25 centimeters. What is the length of the building on the scale drawing in centimeters?

A box contains 7 green cubes, 8 green spheres, 10 blue cubes, and 8 blue spheres. What is the probability that an object chosen from the box at random is a sphere? Please express your answer as a percent to the nearest percent.

0.157N

i need to know what a and b equals so the equation would have infinite solutions

but i need value of a and b and how u answer at 2:17 am when its 1:23 am