Answer:
Step-by-step explanation:
Answer: 212,520
Step-by-step explanation:
Given : A pianist plans to play 4 pieces at a recital from her repertoire of 23 pieces, and is carefully considering which song to play first, second, etc.
It means the repetition of pieces is not allowed.
When repetition is not allowed , then the number of ways to arrange n things where r things taken together is given by :-
Now, the number of different recital programs are :-
Hence, there are 212,520 different recital programs possible.
Answer:
5. 32 6. Don't know
Step-by-step explanation:
For the first question you shade in the bar to the 20% mark as she has saved 20% of the money needed for her jacket. To complete the bar you add the amount of how much each percentage is in dollars. We know 20%=$15 and the percentage goes up 20% each time so you keep adding $15 on. For question 2 the bar is half way between 0 and 20 and half of 20 is 10. As 10 is half of 20 we half 15 to get $7.50
Answer:
Infinitely many solutions
Step-by-step explanation:
2x + 4y = 8 is a linear equation in two variables.
A linear equation in two variables have infinitely many solutions.