In the diagram, dc is tangent to the circle, ac=12cm, and bd=2√34cm. find ad.
a.10cm
b.12cm
c.2√61cm
d.130cm

David bought a poster for an art project. the poster is 2.7 feet wide and 3.9 feet tall. what is the area of the poster?

Guys i really need or i have to stay late up night

Aculture started with 4,000 bacteria. after 5 hours, it grew to 5,200 bacteria. predict how many bacteria will be present after 19 hours. round your answer to the nearest whole number.