Traci has four blue pens and three red pens. she has twice as many black pens as blue pens. what fraction represents the number of blue pens out of the total number of pens

In trapezoid bath, ah=19.7 and et=16.1. identify be.

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?

What is the length of the unknown leg in the right triangle ?