Please help. I'll give brainliest :) What is the difference between primary waves (P-waves) and
secondary waves (S-waves)?
A. Primary waves are compression waves that travel faster than
secondary wave with elastic rope-like movement.
B. Primary waves are elastic waves that travel faster than
secondary waves that are compression waves.
C. Primary waves are compression waves that travel slower than
the secondary wave with elastic rope-like movement.
D. Primary waves are rolling waves and secondary waves cause
horizontal shifting, both move along the Earth's surface.

 its b

Step-by-step explanation:

because p waves can only pass through gas or liquid

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

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answers

rauschg

rauschg · hand

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step-by-step explanation:

the answer is 2/54

step-by-step explanation: