70% of the 30 sandcastles at Donatello Beach have moats. How many of the sandcastles have moats?

Which type of graph would allow us to compare the median number of teeth for mammals and reptiles easily

Will mark 50 show all what is the solution to the system of equations? use the substitution method and show your work. -5x+y= -3 -15 x+3y=7 explain what your answer in part (a) tells you about the association of the lines in this system.

Julie multiplies 6.27 by 7 and claims the product is 438.9 .explain without multiplying how you know juliesanswer is not correct. find the correct answer