fifteen boys took 12 hours to weed a plot of land. If nine boys work at the same rate how long will it take them to weed the same plot of land.

Taking algebra two apex courses and need with these questions

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0

Someone answer asap for ! the following statements are true about the coins calvin and sasha have collected. * calvin and sasha has the same amount of money. * calvin has only quarters. * sasha has dimes, nickels, and pennies * calvin has the same number of quarters as sasha has dimes. * sasha has $1.95 in coins that are not dimes. exactly how many quarters does calvin have?