Answer:
that is 81 which is 9 ^2 and you can you use
Step-by-step explanation:
(a^2 -b^2)=(a-b)(a+b)
=(9^2-8^2)
=(9-8)(9+8)
Answer:
$60
Step-by-step explanation:
- $12t = total cost
- t = 5
- $12*5 = $60
My bad nobody is correct because the answer would equal 5/24
5/24 is in simplest form
The fraction 5/24 is alread in the simplest form, so it isn't possible to reduce it any further.
This is a PROPER FRACTION once the absolute value of the top number or numerator (5) is smaller than the absolute value of the bottom number or denomintor (24).
The fraction 5/24 is equal to 5÷24 and can also be expressed in decimal form as 0.208333.
Answer:
Mr.Lin's present age is 30 years now. His son is 8 years old now.
Step-by-step explanation:
Let L = Mr.Lin's present age,
S = his son's present age.
First equation is
L + S = 38. (1)
The second equation is
L + 3 = 3*(S+3) (2) ("In three years' time, Mr.Lin will be three times as old as his son.")
From (1), express S = 38-L and substitute it into (2). You will get
L + 3 = 3*((38-L)+3), or
L + 3 = 114 - 3L + 9,
4L = 114 + 9 - 3,
4L = 120,
L = 30.