Susan has a collection of 65 nickels and dimes. If the number of nickels is four times the number of dimes, how many nickels and how many dimes does she have?

d = 13 and n = 52

Step-by-step explanation:

Number of dimes:  d

Number of nickels:  n

Then d + n = 65, and n = 4d

Substituting 4d for n in the first equation, we get:

d + 4d = 65, or 5d = 65.  Then d = 13 and n = 52

-12 > a

step-by-step explanation:

-11 > 1 + a

subtract 1 from each side

-11-1 > 1-1+a

-12 > a

the answer is a) y= 2 csc [0.5 (x+pi/2)]-1

step-by-step explanation: