Answer: 2.5
Step-by-step explanation:
5/10 * 5
5 becomes 5/1
Multiply 5*5 and get 25
Multiply 10*1 and get 10
Divide 25/10 and get 2.5
Remember: When multiplying decimals move to the RIGHT. When dividing decimals move to the LEFT
Example Multiplying: 2.465*100
Before: 2.465
After: 246.5
Example Dividing: 156.798 divided by 100
Before: 156.798
After: 1.56798
Hope this helps!!!!
Assuming the room is a rectangle...
The area of a rectangle = its length × its width.
The amount of carpet we need to cover our rectangular room = 8.5 ft × 7.5 ft
Use decimal long multiplication or otherwise to get 63.75 ft².
I'm assuming you mean which one is written properly? It would be either 3 x 10^4 or 6 x 10^4.
Hope it helps!
Answer:
Step-by-step explanation:
The system of equations (a) is the correct one for this situation. We must now solve this system for x and y, which are the unit costs.
Multiplying the 2nd equation by (-3/2) yields -12x - 18y = -168.
Now eliminate x by combining the two equations
12x + 5 y = 116
-12x -18y = - 168
-------------------------
-13y = -52, or y = 4.
If y = 4 then 12x + 5y = 116, or
12x +5(4) = 116, or
12x + 20 = 116, or
12x = 96, or x = 8
Roller pens are $8/dozen and ball point pens are $4 per dozen.
Answer:
its 57
Step-by-step explanation:
4³ = 4×4×4 = 64
2x3+1 = 7
64 - 7 = 57
