Can anyone help me please I’ll mark you as a brainliest.
Please don’t answer if you do not know.

1. 5(3+9) = (5 x 3) + (5 x 9)

2. (7+8)6 = (6 x 7) + (6 x 8)

3. 51 x 9 + 51 x 31 = 459 + 1581 = 2040

4. 17 x 13 + 51 x 13 + 32 x 13 = 221 + 663 + 416 = 1300

These should all be right :)

I used PEMDAS and the distributive property.

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.