In the diagram below of circle O, chords ABand CD intersect at E. If the measure of arc AC = 72°, and MZAEC = 58°, how many degrees are in the measure of arc DB? Explain. D 72 58° %3D 90 Level What is the value of x? Explain. (3x + 4)° (x + 12)° 36°

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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.