K = 4pq^2
k/4p = q^2
0.5(k/p)^1/2 = q
She bought 4 Movies and 3 CDs so she spend $19.50 bc 3+3+3+3=12 so 2.50+2.50+2.50=7.50 so 7.50+12=19.50
Answer:
a²-17=8
Step-by-step explanation:
5²-17= 25-17
= 8
Answer:
Probably the 1st picture.
Step-by-step explanation:
keep in mind, the center is 0.

check your calculator for the [!] factorial button.
also bear in mind that most calculators also have an [ₙPᵣ] button, to get Permuations, and you can just use that.