11) The half-life of carbon-14 is 5730 years. How much of a 400g sample will remain after 12,000 years? A) 93.677 grams B) 345.953 grams C) 287.288 grams D) 9.368 grams​

step-by-step explanation:

1. the cylinder is a. 54

2.   a.108 /

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)