Pleaze help just multiply and divide Multiplying and Dividing Rational Numbers

1. (-1) x 12
2. (-0.5) x 16
3. 24 ÷(−6)
4. (−15) ÷0.3
5. (−4) ÷(−20)
6. (-2) x (-6)
7. (-2.1) x (-2)
8. (-10) x (3.2) x (-7.3)
9. 15 ÷(−12)
10. 12 x (-13)

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.

i hope this is what you were looking for.

see attached graph