Answer:
20
Step-by-step explanation:
There are 20 ways to select 3 cups from the 6 cups.
This can be calculated using formula nCr
Where,
n = objects
r = sample
Calculating 6C3 using calculator that is 20.
Answer:1689
Step-by-step explanation:
Delta Math
Basically you want to make the equation so that you have
x>something or x<something so basically solve for x or isolate x so
a+bx>cx-d
try to get all the x's on one side
subtract bx from both sides
a>cx-bx-d
add d to both sides
a+d>cx-bx
undistribute
a+d>(x)(c-b)
divide both sides by (c-b)
tada
so the solution is

>x or
x<
I think that would be q-15?
All the numbers are composite, multiples of 3, and divisible by 2.