Answer: Aiden bought 8 notebooks and 5 covers.
This is a system of equations problem. To solve this, we have to write 2 different equations and then solve them.
Our equations are:
x + y = 13
1.37x + 1.08y = 16.36
Where x is the number of notebooks and y is the number of covers.
To solve these equations, you can use anyone of these methods:
1) Graphing
2) Substitution
3) Elimination
The easiest way would be to graph them with a graphing calculator and find the point of intersection.
The minimum of a quadratic function, with a positive coefficient a, is its vertex.
Let's find the x₀ coordinate.

Now we need to find y₀ coordinate. That will be the minimum of function.

So, the minimum cost to produce the product is $13
Decompose 5x^2 − 70x + 258 into multipliers

Answer: 5(x − 7)^2 + 13; The minimum cost to produce the product is $13.
Answer:
PQ = 98.21
Step-by-step explanation:
PQ/23 = 47/11
PQ × 11
23 × 47
11PQ = 1081
11PQ/11 = 1081/11
PQ = 98.21
Answer:
The circumference is about 19 centimeters.
Step-by-step explanation:
The formula for finding the circumference of a circle is
or simply
.
Now input the values into the formula, keeping in mind that pi is almost 3.14.

Answer ≈ 19 cm
Hope this helps; have a great day!