Which of the following is an appropriate description of the significance level of a test? The proportion of the time we find a test statistic at least as extreme as the one we found in our study. The proportion of the time we expect the null hypothesis to be true. The proportion of the time we expect that we'll reject null hypotheses when we really shouldn't. The proportion of the time we expect that we'll fail to reject null hypotheses when we really should. The proportion of the time we expect the alternative hypothesis to be true.

- 2 + 10x³ - 21x² + 19x - 4

step-by-step explanation:

each term in the second factor is multiplied by each term in the first factor

x²(- 2x² + 4x - 1) - 3x(- 2x² + 4x - 1) + 4(- 2x² + 4x - 1) ← distribute

= - 2 + 4x³ - x² + 6x³ - 12x² + 3x -8x² + 16x - 4

collect like terms

= - 2 + 10x³ - 21x² + 19x - 4 ← in standard form

757764

step-by-step explanation:

de77737dd

trapezoid

step-by-step explanation:

first i plotted all my points on a grid graph

i made sure all of them were in the correct quadrant

then i saw it was a trapezoid or a quadrilateral

ask the math teacher she or he would know lol.

step-by-step explanation: