What is r if -4(r+3) = -42
2 answers:
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Answer:
100
Step-by-step explanation:
Hello! to calculate the number of tiles needed for the floor you need two things
1. number of tiles that fit across the width, this is achieved by dividing the total width by the width of each tile
Width=20ft=240in
2.number of tiles that fit in the logitude, this is achieved by dividing the total length by the length of each tile.
leght=30ft=360in
Finally, you multiply the number of tiles that fit in width by the number of tiles that fit in length.
N=10X10=100