Answer:
105 ways
Step-by-step explanation:
Because the order of selection does not matter, we know that we will be using a combination instead of a permutation.
₁₅C₂ = 15! / (2! * 13!)
= 15 * 14 * ... * 2 * 1 / 2 * 1 * 13 * 12 * ... * 2 * 1
= 15 * 14 / 2 * 1 (The 13! cancels out)
= 105
Answer:
0.5 and 2.0
Step-by-step explanation:
2 is the same as 2.0
Answer:
x = 8
Step-by-step explanation:
All sides are equal in terms of symmetry, such as the 5 and 5 opposite the angle 120 that repeats itself at the centre 3 times
Answer:
5 pizza slices and 4 drinks
Step-by-step explanation:
If each pizza slice costs $4 then 4*5 is $20 and then if each drink costs $2 then 4*2 is $8 which adds up to $28
Answer:
42.
Step-by-step explanation:
y / 4 = 10.5
To isolate y we multiply both sides of the equation by 4:
4*y/4 = 4 *10.5
y = 42.