Answer:
Yes
Step-by-step explanation:
The negative sign was simply moved to either the numerator or denominator. Either way the number is still a negative one half.
Answer:
(a)

(b)

Step-by-step explanation:
Quotient of factorials:
we are given

we can multiply top and bottom term by 21!

we can write as

As a permutation:
we know permutation formula

now, we can compare and find 'n' and 'r'


we can plug back n=25


so, we can write

Answer:
84 days are in 12 weeks
Step-by-step explanation:
Rectangle formula 1/2 ×b × H × l
= 1
___ × 4 × 86 × 2 = 344 totally answer
2
Answer:
m = 11
Step-by-step explanation: