There are 142 coins in a piggy bank with a total value of $20.50. If all the coins are either quarters or nickels, which system would you use to determine how many of each type of coin are in the piggy bank?

Number of quarters = 67

Number of nickels = 75

Step-by-step explanation:

Please kindly check the attached files for explanation.

here you hope this .

step-by-step explanation:

hypotenuse = √(15² + 8²)

=  √(225 +64)

=  √(289) = 17

sin(x) = cos(y) = 8/17

they are identical so long as you are doing the sine of one angle and the cosine of the only other angle that isn't the right angle.

start with a line segment pq that we will copy. mark a point r that will be one endpoint of the new line segment. set the compasses' point on the point p of the line segment to be copied. adjust the compasses' width to the point q. the compasses' width is now equal to the length of the line segment pq.

step-by-step explanation: