How many permutations can be made of the letters of the word "radar" when taken all at a time?

Total number of permutations which can be made = 120

Step-by-step explanation:

The word is given to be : RADAR

Number of letters in the given word = 5

The letters are taken all at a time

⇒ Repetition of the letters are not allowed

Now, Number of possibilities for the first letter = 5

Number of possibilities for the second letter = 4

Number of possibilities for the third letter = 3

Number of possibilities for the forth letter = 2

Number of possibilities for the five letter = 1

Hence, Total number of permutations which can be made = 5 × 4 × 3 × 2 × 1  

= 120

u = -(6/7)w

step-by-step explanation:

place all values with 'u' on one side of the equation.

4u + 8w = - 3u + 2w

4u + 3u = 2w - 8w

further simplify the equation by solving the addition and subtraction.

7u = - 6w

make 'u' the independent variable by placing its co-efficient on the right-hand side.

u = - (6/7)w

well what did you do it matters what you did : )

step-by-step explanation: