Anja simplified the expression
10x9 15
10 to 15. What mistake did Anja make?

10 times 9 is 90 divide 90 bye 15 and there u go

Step-by-step explanation:

She subtracted the coefficients instead of dividing them

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.