How many square metres of wallpaper are needed to covet a wall 8m long and 3m high​

Zoe placed colored blocks on a scale in science class. each block weighed 0.8 ounces. the total weight of all the colored blocks was 12.8 ounces. how many blocks did zoe place on the scale? write and solve an equation to find the answer.

Use the knowledge of x- and y- intercepts to choose the correct graph of the equation 3x+6y=6

Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc?