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Viefleur [7K]
3 years ago
10

2r+c+0.5d+8 how many terms does the expression have​

Mathematics
1 answer:
Lemur [1.5K]3 years ago
8 0

A <em>term</em> in a math expression is <u>single </u>number or variable and are <u><em>separated </em></u>by a + or - or × or ÷

This expression has 4 terms

2r

1c

.5d

and 8

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Which of the following are identities?
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Answer:

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Step-by-step explanation:

In mathematics, an identity is one of the characteristics of algebraic expressions.

Given variable a and b in an algebraic expression, an identity is defined as an equality that remains the same no matter the values that we choose for either variable a or b.

Identity in mathematics makes it very easy to solve algebraic expressions. The two sides of an identity in an algebra can easily be exchanged for each other.

In the above question, we are given 3 Options.

I) 3(5 + 2x) = 15 + 6x

II) y = x + 3

III) (x² - y²) = (x + y) (x - y)

Option I) 3(5 + 2x) = 15 + 6x

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Option II) y = x + 3 is just an algebraic expression.

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We can prove and confirm this be solving the algebraic expression

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Therefore, option A is the correct option.

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