A new alloy is made by mixing 8 parts of iron, 3 parts of zinc, and one part of tungsten. how much of each metal is needed to make 420 m3 of the alloy

Which statements about these triangles is true

Ill mark the brainliest if you me with the these three questions 7,8,9

Write a polynomial function f of least degree that has rational coefficients, a leading coefficient of 1, and the given zeros. 3, 4+2i, 1+(sqrt)7 the answer is supposed to be: f(x)=x(^5)-13x(^4)+60x(^3)-82x(^2)- 144x+360 what am i doing wrong?