She swims for 2.5 hours at a rate of 2 km/hr
Multiply 2.5 * 2 = 5 km
To find the number or rows, divide the total number of students by the number in each row.
63 / 7 = 9 rows.
The answers are:
P(9, 2) = 72
P(5, 5) = 120
P(7, 7) = 5040
These are examples of permutations. The problems are asking us to find the total number of ways an event can happen.
In the first case, P(9, 2), we are asked to find the ways that 2 things can be chosen out of a group of 9.
9 x 8 = 72
P(5, 5) = 5 x 4 x 3 x 2 x 1
P(7, 7) = 7 x 6 x 5 x 4 x 3 x 2 x 1
Answer:
3/4
Step-by-step explanation:
Use slope formula y2-y1 over x2-x1
9-3=6
5--3 becomes 5+3 which equals 8
so 6/8
which when simplified is 3/4.
Answer:
The area of the shaded region is the difference between the areas of the rectangle and the square.
Step-by-step explanation: