To find this answer, we need to multiply 3.57 by 12.
Therefore, 12 planks will cost $42.84.
The students will earn $180 by washing cars for 9 hours.
In 3 hours the students will earn...
$5 x 12 = $60
5 dollars x 12 cars = 60 dollars
So in 3 hours the group of students will earn $60
In 9 hours the students will earn...
$60 x 3 = $180
Since the students will earn $60 per every 3 hours, you multiply $60 with 3 because if you divide 9 hours by 3 hours you will get 3. The answer you get by multiplying 60 by 3 is 180. Therefore the students can earn $180 from washing cars.
I hope this helps!
Since the sign before the parentheses is a + , we can just remove the parentheses.
<span>5i + (-9 - i) = 5i - 9 - i = -<u>9 + 4i</u></span>
Answer:
one hundred seventy-six and fifty-nine hundredths
Step-by-step explanation:
Answer:
54 and 30
Step-by-step explanation:
84÷2=42-12=30
42+12=54
