I have a mix of 12 nickels and dimes in my pocket. All together I have $1 . How many nickles and dimes do I have? (Create a system of equations and solve that system)

Step-by-step explanation:

n + d = 12

0.05n + 0.1d = 1    ║ × ( - 10 )

n + d = 12 (1)

- 0.5n - d = - 10 (2)

(1) + (2)

0.5n = 2 ⇒ n = 4

d = 12 - 4 = 8

There are 4 nickels and 8 dimes in the pocket.

w'x is 0.

hope it

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80