It can be done in 50388 ways
Step-by-step explanation:
When the selection has to be made without order, combinations are used.
The formula for combination is:
Here
Total books = n =19
Books to be chosen = r = 7
Putting the values
It can be done in 50388 ways
Keywords: Combination, selection
Learn more about combinations at:
#LearnwithBrainly
Answer:
Step-by-step explanation:
5x²-25x=5x-40
5x²-30x+40 =0
5(x²-6x+8) = 0
5(x-2)(x-4)=0
5 days normal
5*100=500
3 days overtime
3*50=150
total is 500+150=350
you earned $350
Answer:
no solution
Step-by-step explanation:
5 + 2(3 + 2x) = x + 3(x + 1) ← distribute parenthesis on both sides
5 + 6 + 4x = x + 3x + 3 , simplify both sides
11 + 4x = 4x + 3 ( subtract 11 from both sides )
4x = 4x - 8 ( subtract 4x from both sides )
0 = - 8 ← false statement
This indicates the equation has no solution
A) y=1/2x + 4/3
b) y=-2/5x + 6
