Sean spelled 13 out of 20 words correctly on his srelling test. write his test score as a percent.

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

Its due ! write an equation in which the quadratic expression 2x^2-2x 12 equals 0. show the expression in factored form and explain what your solutions mean for the equation. show your work.

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are: