List the possible rational roots and actual rational roots for the equation x^3 - 5x^2 - 4x + 20 = 0

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year the population of her town is changing by a constant rate

Find the length of the following tangent segments to the circles centered at o and o' whose radii are 5 and 3 respectively and the distance between o and o' is 12. what is the tangent segment of cd?

Which matrix multiplication is possible?