Pls the radius of a circle is 7 meters. what is the area of a sector bounded by a 180° arc? give the exact answer in simplest form.

If x + 10 = 70, what is x? a. 40 b. 50 c. 60 d. 70 e. 80

He amount of carbon-14 present in animal bones t years after the animal's death is given by p(t)equals=upper p 0 e superscript negative 0.00012097 tp0e−0.00012097t. how old is an ivory tusk that has lost 26% of its carbon-14?

Need so much on this one how many yards?