How do you write 4( 1,000,000) + 7(100) + 2(1) in standard form

In trapezoid efgh, m∠hef=(4x2+16)∘ and m∠gfe=(5x2+12)∘. find the value of x so that efgh is isosceles.

Describe in detail how you would construct a 95% confidence interval for a set of 30 data points whose mean is 20 and population standard deviation is 3. be sure to show that you know the formula and how to plug into it. also, clearly state the margin of error.

What term best describes a line and a point that lie in the same plane? a. congruent b. coplanar c. collinear d. equal