How many terms are in this expression: 4n+2n+9-5 terms are parts between the addition or subtraction sign

Segment xy is dilated through point m with a scale factor of 2. which segment shows the correct result of the dilation

If the speed of an electromagnetic wave is 100,000 cm/s and its wavelength is 100 cm, what is its frequency? a) 100,000 cycles per second (hz) b) 1 × 10-3 cycles per second (hz) c) 10,000,000 cycles per second (hz) d) 1,000 cycles per second (hz)

The surface area of the triangular prism is .