8. using the order of operations rule, solve the following: 12 24 2 x 3a, 4b. 0c. 36d. 24

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.

51

step-by-step explanation:

73-22=51 the   mass number minus the amount of protons gives you the amount of neutrons