A scientist estimates that there are about 102* stars in the uhiverse and has, on average, approximately the same number of stars as the Milky Way galaxy. About how many galaxies are in the universe? Milky Way galaxy: 10 1010 stars O 1013 galaxies O 1010 galaxies O 1014 galaxies O 1012 galaxies
Percentage
A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.
Algebraic Expressions
In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.
Numbers
Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.
Subtraction
Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.
Addition
Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.
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