Answer:
the new ones and the old ones that you didn’t delete
Step-by-step explanation:
Let numbers of books be 'b' and numbers of CDs be 'c'
We can set up two equations:
Equation [1] ⇒

Equation [2] ⇒

We are solving for the number of books and the number of CDs bought
When we have two equations in terms of two different variables;

and

, that we need to solve, then this becomes a simultaneous equation problem.
First, rearrange Equation [1] to make either

or

the subject:


Then we substitute

into Equation [2]






Now we know the value of

which is

, substitute this value into

we have

Answer:
Numbers of books = 13
Numbers of CDs = 7
The answer would be 18mm because 6+6+3+3 considering that there are 4 sides.
Answer:
1/8 square unit or 0.125 square unit
Step-by-step explanation:
Please kindly check the attached files for explanation and the picture or diagram of the square with triangles
Answer:
ratio dough:cheese 6:1
Step-by-step explanation:
36 ÷ 6 = 6
._.