The sum of 12 and a number
(12 + n)
is no greater
< =
then the sum of twice the number and 8
(2n +(-8)) = (2n - 8)
so we have :
(12 + n) < = (2n - 8)
Answer:
2/5 or 40%
Step-by-step explanation:
.40 is 40 hundredths or 40/100
40/100 can be reduced to 20/50 and reduced again to 10/25 and one more time to 2/5
Percentages are fractions out of 100 so 40/100 would be 40%.
I cant directly give u the answer but here is some help:
for part a add up and solve the equazions on the whiteboard.
for part b subtract 90 from what you got from part a.
Hope this helps. Sorry i couldnt help more.
Area = 
Therefore, area of square is 88.36 cm².
