karens phone company charges a flat fee of $12 plus $0.05 per minute her bill last month was $18. write equation if we let m represent the number of minutes used

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?

Using the side-splitter theorem, daniel wrote a proportion for the segment formed by luke segment de. what is ec?

Can someone check if i did this correct. it’s number 4 if you’re wondering.