The diagonals of a square bisect one another and are perpendicular.
so 21x+ 16.5 = 90
subtract 16.5 from each side
21x = 73.5
divide by 21 on each side
21x/21 = 73.5 /21
x = 3.5
Answer:
8
Step-by-step explanation:
8•4=32 it's not that bad
Eighty three thousand four hundred and seventy nine
Answer:
297 cubic centimeters
Step-by-step explanation:
volume is LWH
11*9*3 = 297
17.009 in word form is
seventeen and nine thousandths.
Hope this helped! :))