72,457 rounded to the nearest thousand is 72,000
Answer: $27.85
Step-by-step explanation:
$5.25*7=$36.75
$36.75-$8.90=$27.85
If the number is n then
square of 2 times a number
square of 2n
(2n)²
that was your mistake, because (2n)²=4n², not 2n²
the result is 81
(2n)²=81
square root both sides
remember positive and negative roots
2n=+/-9
divide by 2
n=+/-4.5
n=4.5 or -4.5
Did you just add an answer too a question? 15% is 0.15
