Rewrite in simplest terms: (-x+8y)+(-10x-6y)(−x+8y)+(−10x−6y)

Can someone answer it, and plot it, for 20 points and brainliest answer? p.s. they're the same ! : )

The radius of the circle is 4 cm and the measure of the central angle is 90° the area of the sector with a central angle measuring 90° and radius of length 4 cm is vt cm the triangle in the sector is 4 cm the area of the triangle is v/cm² the area of the segment of the circle is (471 - ) cm?

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?