First you make the mixed numbers/fractions into improper fractions. After that, you must find the common denominator, the LCM of 9 and 6 (for the 2nd problem). After that, if you can, simplify the fraction to lowest terms, which also includes making it a mixed number/fraction.

I hope this helps! :)

3 0

3 years ago

Use the permutation formula to solve a problem when n = 15 and r = 4.

barxatty [35]

$nPr = \frac{n!}{(n - r)!}$

$15P4 = \frac{15!}{(15 - 4)!} = \frac{15!}{11!} \\ = \frac{15 \times 14 \times 13 \times 12 \times 11!}{11!} \\ 15 \times 14 \times 13 \times 12 = 32760$

3 0

2 years ago

Read 2 more answers

Can someone show me how to do this problem and I need help!! <br><br> Thank you!!

UNO [17]

Answer:

$\frac{6}{19 }$

Step-by-step explanation:

6 + 5 + 7 + 1 + 0 = 19

4 0

2 years ago