Right triangles abc and bcd with right angle c are given below. if m(a)=30∘,m(d)=45∘, and bd=12, find the length of ab. note: the triangle may not be drawn to scale.

Find the greatest common factor of the polynomial: 10x^5+15x^4-25x^3 10x^5 x^3 5x^3 5

X-intercept=-5 y-intercept=2 the equation of the line is

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?