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Q: What is a mathematical phrase that uses only number and operation signs?

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This is a mathematical "expression".

A mathematical expression is a mathematical phrase that consist numbers variables and signs of operation example: x(variable) + 5(number)=7 so the value of x is 2 -Kennethn 10 yrs. old :]

A mathematical expression has numbers and operation signs with no equal sign. Equations, on the other hand, do contain equal signs.

There are a few numbers that do not need signs. You do not have to sign when timing something.

four

Algebraic expression

if there are no comparison signs (equals or inequalities, ie =, >, < etc) then it is an expression, eg "x + 5" If there is a comparison sign which is not equals, then it is an inequality, eg "x > 5"

An expression does not contain an equality sign.

It's an equation.

An expression

An "expression", is part of a number sentence that combines numbers and operation signs but does not have an equal sign" Example: x/y , when x=10 and y=5 , the assumption of this expresssion is 10/5 or 2. Or: 2+3 , the assumption of this expression is 5 even though no equal sign is present. Lyle Larson 4th grade Southern California

A term in algebra is a single part of an expression or of an equation separated by mathematical signs.

Without the appropriate mathematical signs the given terms have no solutions.

a symbol or function denoting an operation, like plus or minus signs.

Mathematical signs would help.

If you can write it without using weird mathematical symbols like summation or radical signs, then it's a rational number. So yes, -6 is rational; it is the ratio between -6 and 1 (among many, many other possibilities).

6! / (6*6) = 720 / 36 = 20

negative. When you multiply, if there are an odd number of negative signs, the answer is negative. If there are an even number of negative signs, the answer is positive. Or another way to think of this is that two negative signs cancel each other out when multiplying.

René Descartes (1596-1650)

Yes it is true. When entering a number as a criterion you type the number without any dollar signs or commas. :)

One can purchase outdoor business signs from a number of companies. They can be purchased from eBay, Outdoor Signs America and from Signs By Tomorrow.

6-6/6+6*6=36

If the signs of both numbers are the same, the product will be positive. If the signs of the numbers are different, the product will be negative.