6a+ 12b+ 18c
Hope this is correct...plz let me know
Answer:
Step-by-step explanation:
M²N² - MN = MN (MN - 1)
M²N² + MN = MN (MN + 1)

= (MN - 1) * MN * (MN + 1)
= (MN - 1)(MN +1) MN {(a+ b)(a - b) = a² - b² }
= (M²N² - 1²) * MN
= (M²N² - 1)MN
Answer:
1.- He received 388 dollars in exchange.
2.-(100 x 4) - (7.00 + 5.00)
= 400 - 12
= 488
3.- I buy 15 basketballs.
And I buy 6 soccer balls.
4.- (135 ÷ 9) (48 ÷ 8)
= 15, 6
Step-by-step explanation:
I hope I have helped you can you put that this is the smartest answer please?
With n tosses, there are a total of 2^n possible outcomes. We need 15 of theses to be heads.
Since the tosses are random, we want to count the ways to have exactly 15 of them being heads. That will be C(n,15) ways to pick which tosses are heads.
The probability will be given by:
C(n,15)/2^n=0.0148
At this point we use various values of n until we get the correct probability.
n=18⇒0.003112793
n=19⇒0.007392883
n=20⇒0.014785767
n=21⇒0.025875092
Answer:
n=20
no way dude really? thats so cool