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

Use this data in the problem below. follow the steps carefully. round to the nearest tenth. lot 3: week 1: 345 week 2: 340 week 3: 400 week 4: 325 step 1. jim enters the data and calculates the average or mean. step 2. jim calculates the deviation from the mean by subtracting the mean from each value. step 3. jim squares each deviation to remove negative signs. step 4. jim sums the squares of each deviation and divides by the count for the variance. step 5. jim takes the square root of the variance to find the standard deviation.

Write an equation of a line in slope intercept form that is perpendicular to the line 2x -3y = 12 and passes through the point (2, 6).

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.