Help please :

Question

Help please :<

anonymous · Answer

attachment

anonymous · Answer

@Michele_Laino @Nnesha @mathstudent55

anonymous · Answer

3 1/8 x 5 = 15.625 = 15 5/8  I would simplify just to make sure. :)

misty1212 · Answer

yeah, multiply

mathstudent55 · Answer

We are dealing here with three quantities.
The length of each piece, the length of the entire piece, and the number of pieces.
Which of the three quantities do we know and which is unknown?

misty1212 · Answer

i would hardly call $5\times 3\tfrac{1}{8}$ and equation, it is a number, but  that is the answer

mathstudent55 · Answer

The length of the board is unknown, and we use a variable for it.
Let L = length of board.
We do know the number of pieces, 5, and the length of each piece, 3 1/8 in.

length of board = number of pieces * length of each piece

L = 5 * 3 1/8

mathstudent55 · Answer

A statement that equates two quantities is an equation.
If the total length were known (for example, 10 in.), and the length of one piece were unknown, L, but still with 5 pieces, we'd have:

5 * L = 10

This is as much an equation as 

L = 5 * 3 1/8

anonymous · Answer

Thank  you! Could you do one more?

mathstudent55 · Answer

sure
have you posted a new problem?

anonymous · Answer

I closed this so I could ask it, ok?