Answer: the cost of each pendant is $2.1
Step-by-step explanation:
Let x represent the cost of each pendant.
Amy made 3 identical necklaces, each having beads and a pendant. It means that the cost of the pendant used is $3x. The total cost of the beads and pendants for all 3 necklaces was $13.20. If the beads cost a total of $6.90, then the equation would be written as
6.90 + 3x = 13.20
3x = 13.20 - 6.90
3x = 6.3
x = 6.3/3
x = 2.1
Answer:
generally, the sum divided by the number of summands
Step-by-step explanation:
In math the term "mean" can have different meanings, depending on the context. It will generally refer to the arithmetic mean, if no additional qualifiers are given. The arithmetic mean is also called the average.
__
<h3>arithmetic mean</h3>
The arithmetic mean of a set of numbers is their sum, divided by the number of numbers. It is sometimes represented by the Greek letter μ or a variable with an overbar.
<h3>geometric mean</h3>
The geometric mean will be the n-th root of the product of n numbers.
<h3>harmonic mean</h3>
The harmonic mean is the reciprocal of the arithmetic mean of the reciprocals.
<h3>proportion</h3>
In a proportion written as ...
a/b = c/d
The two values closest to the middle of the expression (b and c) are called the "means". Those farthest away (a and d) are called the "extremes". It is said that ...
the product of the <em>means</em> is equal to the product of the <em>extremes</em>
Answer:
Number is yellow box=3
Step-by-step explanation:
We know this because the way we get that number is subtracting the two numbers above it, which is 8 and 5, which give us 3.
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Answer:
4
Step-by-step explanation:
To simplify , multiply the numerator/ denominator by
=
= 4
Answer:
length= x-4 meters
Step-by-step explanation: