the surface area of a sphere: sa = 4πr²
where radius, r = 26.8 cm
π = 3.14
put r in the formula above
sa = 4 × 3.14 × 26.8²
= 4 × 3.14 × 718.24
rounding to nearest tenth
2x^4 + x^3 - 5x^2 + 3x - 11.
because abcd is an isosceles trapezoid, the angles a and d are congruent.
ba and cd are congruent (given) and ad is congruent to itself (reflexive property).
then triangles bad and cda form a pair of sas triangles, so they are congruent.
bd and ca are corresponding parts in those triangles, so they are congruent (cpctc).
i believe the answer is quadratic
write the equation of a line parallel to y=-9x -19 3)
going through (2,-1)