Please help me with this! Also, if you can, what are prime numbers? I need to understand! 0-0

9

Step-by-step explanation:

So a prime number is any number that can only be divided by 1 and itself. 7, 3, and 13 are all prime numbers.

Hope i could help you

9

Step-by-step explanation:

a prime number is a number which has factors as one and itself.

All the numbers when multipled by 1 give the same number and no other two numbers hanging multiply it.

But for 9,1*9 gives 9 and 3*3 gives 9

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.

answer:  

123455421

step-by-step explanation: easy