Answer:
441
Step-by-step explanation:
sqrt81=9
9 x 49=441
√ 9 ^2 ⋅ 49
9 ⋅ 49 = 441
242,000
Since the 6 in the hundreds place is greater than 5, you round up.
c) x= 15
d) x= 5
c)4x + 5+ 7x +10=180
solve it like usually
for d) 3x + 15+12x=90
0.....................
