Sodium-24 has a half-life of 15 hours. how many grams of a 900g sample will remain after 90 hours a. 7.03125g b. 7.5g c. 14.0625g d. 28.125g (the 24 in sodium-24 has nothing to do with the equation, that’s just the name.) i will give : )

Explain why the factor 1.5 is broke. into two numbers in the model.

The areas of two similar triangles are 72dm2 and 50dm2. the sum of their perimeters is 226dm. what is the perimeter of each of these triangles?

Find the directions in which the function increases and decreases most rapidly at upper p 0p0. then find the derivatives of the function in these directions. f(x,y)equals=x squared plus xy plus y squaredx2+xy+y2, upper p 0p0left parenthesis 1 comma negative 4 right parenthesis