Answer:
$600
Step-by-step explanation:
Step-by-step explanation:
subtract
(10x+5)*(9x-2)
90x^2-20x+45x-10
90x^2+25x-10
Answer:
X = 4
Y = 3
Step-by-step explanation:
Metimes we do not always need to give detailed answers to problems - we just want a rough idea. When we are faced with a long number, we could round it off to the nearest thousand, or nearest million. And when we get a long decimal answer on a calculator, we could round it off to a certain number of decimal places.<span>Another method of giving an approximated answer is to round off using significant figures.</span>
