Show your work 2 1/5 × 3 1/8​

6 1/40 i think that i got it write

6 7/8

Step-by-step explanation:

2 1/5 can be made into 11/5 because 2x5+1=11. Then 3 1/8 can be made into 25/8 because 3x8+1=25. To multiply fractions all you have to do is multiply the numerators together then the denominators together. 11/5 x 25/8=

11x25 and 5x8. 11x25=275 and 5x8=40. The answer is 275/55 but it can be simplified to 55/8. Then we have to change it into a mixed fraction. 55/8=6 7/8

Hope this helps! I would appreciate it if I am marked brainliest

0.02

step-by-step explanation:

time of 9 192 631 770 periods of the radiation corresponding to the transition between the 2 hyperfine levels of the ground state of the caesium 133 atom at 0 k (but other seconds are sometimes used in astronomy)