Answer:
D
Step-by-step explanation:
This is because they are both mulitplied by two so they are still equivalent
Answer:
d
Step-by-step explanation:
Answer:
-3
Step-by-step explanation:
It would just be -12+9=-3.
Answer:
1000cm²=0.1m²
so 7000cm²=0.7m²
Step-by-step explanation:
please mark me as brainliest
Step-by-step explanation:
a).
n! is

(n-3)! is

If we divide the two, everything behind (n-3) will just cancel out so we would be left with only

So the answer to a is

b
Permutations formula of P(6,4) is
6!/(6-4)!, or 6!/2!.

Then we divide by 4!

The answer to b is 15