A 139.5 g sample of carbon-14 is contained in an old fossil. If 17, 520 years pass, how much of of the carbon-14 in the fossil will be left? The half life of carbon-14 is 5730 years. Use the equations below to help you. Use k = -1.21 x 10-4 for the decay constant.

For what is the measure of the angle at the top of the shed? a. multiplication of areas b. squaring of areas c. addition of areas d. division of areas

*let m∠cob = 50°30’, m∠aob = 70° and m∠aoc = 20°30’. could point c be in the interior of ∠aob? why? a. point c could be the interior of aob but it is not the only case b. point c is the interior of aob c. point c is not the interior of aob d. the given is not possible for the plane geometry answer

Which of the following equations is equivalent to x/3-6/x=1