Derrick has a total of 9 nickels and quarters in his pocket. the total amount of money he has in coins is $1.45. how many nickels and how many quarters does derrick have? (with solution)
a. 3 nickels and 6 quarters
b. 6 nickels and 3 quarters
c. 4 nickels and 5 quarters d.
5 nickels and 4 quarters

A) N + Q = 9

B) .05 N + .25 Q = 1.45

Multiplying A) by -.25 we get

A) -.25 N -.25Q = -2.25  then adding B)

B) .05 N + .25 Q = 1.45

-.2N = -.80

4 Nickels

5 Quarters

Answer is C

Step-by-step explanation:

a

step-by-step explanation:

when a number is between two straight lines it means the absolute value.

to find absolute value you need to know how many numbers is that number away from 0.

when finding absolute value the number will always come out positive

so absolute value of -3 is 3

absolute value of 3/2 is 3/2

absolute value of -2 is 2

absolute value of 3.5 is 3.5

absolute value of -1 is 1

now put these numbers in order:

a)   |-1|, |3/2|, |-2|, |-3|, |3.5|