Find the value of x. rounded to the nearest tenth or as a whole/ fraction

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

What sums are equal to 6/12? choose all answers that are correct a.6/12+6/12+6/12+6/12+6/12+6/12 b.2/12+1/12+1/12+2/12 c.5/12+1/12 d.1/12+1/12+1/12+3/12 plz : )

Given sin28.4=.4756, cos28.4=.8796, and tan28.4=.5407 find the cos of 61.6