Prehistoric cave paintings were discovered in a cave in france. the paint contained
23% of the original carbon-14. the half-life of carbon-14 is 5730 years. estimate the age of the paintings

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class

Find the value of x in each case. give reasons to justify your solutions! d q ∈ pr

Aaron invested a total of $4,100, some in an account earning 8% simple interest, and the rest in an account earning 5% simple interest. how much did he invest in each account if after one year he earned $211 in interest? select one: a. $200 at 8%, $3,900 at 5% b. $3,200 at 8%, $900 at 5% c. $900 at 8%, $3,200 at 5% d. $3,900 at 8%, $200 at 5%