How many solutions does this system of equations have? -x+2y=6 -x+2y=0 a. none b. exactly one c. exactly two d. infinitely many

What is negative 3/9 times negative 2/8 ?

Ahovercraft takes off from a platform. its height (in meters), xx seconds after takeoff, is modeled by: h(x)=-2x^2+20x+48h(x)=−2x 2 +20x+48 what is the maximum height that the hovercraft will reach?

You have 37 coins that are nickels, dimes, and pennies. the total value of the coins is $1.55. there are twice as many pennies as dimes. find the number of each type of coin in the bank.