Jajaja no es un un error pero si lo hago no es lo mío y si me lo hago

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

True or false? a circle could be circumscribed about the quadrilateral below.

Ascientist has 50 grams of a radioactive element. the amount of radioactive element remaining after t days can be determined using the equation (1) after two days the scientist receives a second shipment of 50 grams of the same element. the equation used to represent the amount of shipment 2 remaining after t days is 10) - 50 which of the following is an equivalent form of the expression for the amount remaining in shipment 2? what’s the answer?