Answer:
x = 6
Step-by-step explanation:
5 times x is 5x, 5 times 9 is 45; 5x+49-4; 49 minus 4 is 45; 5x+45 = 75; now minus 45 from each side so it would now be 5x = 30; now divide; 30/5 = 6.
take a actual picture maby
(i just changed my answer)
sqrt is the square root of
v=sqrt(2(ke)/m)
