Is 2x+5=10 an example of an expression? Why or why not? If not, what would you call it instead?

No; equation

Step-by-step explanation:

2x+5 = 10 is not an expression rather it's an equation because it has an equal sign. An expression is a number, a variable, or a combination of numbers and variables and operation symbols. An equation is made up of two expressions connected by an equal sign.

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step-by-step explanati∵∵∴∴on:

d) 30 units^2

area of rectangle = l × b

we know,

length = 10 unit

breadth = 3 unit

applying the formula,

= l × b

= 10 × 3

= 30 unit^2

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