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Sliva [168]
3 years ago
7

What is the meaning of algebra and expressions

Mathematics
2 answers:
iren [92.7K]3 years ago
4 0

In mathematics, an algebraic expression is an expression built up from integer constants, variables, and the algebraic operations (addition, subtraction, multiplication, division and exponentiation by an exponent that is a rational number). For example, 3x2 − 2xy + c is an algebraic expressio

Scrat [10]3 years ago
3 0

Answer:

Algebra is a branch of mathematics that substitutes letters for numbers. Algebra is about finding the unknown or putting real-life variables into equations and then solving them. Algebra can include real and complex numbers, matrices, and vectors. An algebraic equation represents a scale where what is done on one side of the scale is also done to the other and numbers act as constants.

Expressions is a Numbers, symbols and operators (such as + and ×) grouped together that show the value of something.  

Examples:

• 2 + 3 is an expression

• 3 − x/2 is also an expression

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Answer:

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Step-by-step explanation:

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A bag contains 2 white marbles and 7 purple marbles. 2 marbles are drawn at random.
seropon [69]

Answer:

7/36

Step-by-step explanation:

Complete

<em>A bag contains 2 white marbles and 7 purple marbles. Two marbles are drawn at random. One marble is drawn and not replaced. Then a second marble is drawn. What is the probability of selecting a purple marble and then a white marble?</em>

Total outcome = 2 + 7 = 9marbles

Pr(picking purple) = number of purple/total outcome

Pr(picking red) = 7/9

Since the first marble is not replaced, the total outcome becomes 8 marbles

Pr(picking white) = 2/8 = 1/4

Probability of selecting a purple marble and then a white marble = 7/9 * 1/4 = 7/36

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Graph the following function. <br> y=1/x+2
Vaselesa [24]
This can't be graphed. You can't have a slope of 1/x.
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Kevin solved a problem by making
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