Im want to know hiw too solve the problem 15-7+2

For this case we must solve the following expression:

By law of signs of the sum we have to comply:

So, we have:

Finally we have to:

10

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.

the infinity sign

step-by-step explanation: