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What is a method for solving a system of linear equations in which you multiply one or both equations by a number to get rid of a variable term?
It is called solving by elimination.
Is a variable with no power assumed to be to the power of one?
Yes. If we don't see an exponent, the exponent is understood to be one. Just like if we don't see a sign, the sign is assumed to be positive. This in no way constricts or limits the variable. The variable can still be anything at all. But assumptions like this are part of mathematics. How tedious would it be to have to write "x1" for each x? In any case, x1 = x so it is almost pointless.Yes, because if the variable (hypothetically speaking) is 1 (and it can be any number in the world, but 1 is an example), and the exponent (power) is 1, there is only one number to multiply, therefore, the number can only be by itself. If it is squared (to the second power) then you multiply the variable against itself (in this case, 1 X 1), but if the variable doesn't have an exponent, it is assumed to be to the power of one. Take the number 2, for example. If 2 is the variable, x, and x is alone, and you multiply how big the number is of the exponent, and because there is none, it is to the first power.X squared looks like this: x X xX (a.k.a. x to the first power) looks like this: xIf there is no exponent, you only multiply what is there, which there is only one variable, so it is assumed to be to the first power. If it were squared, or to the second power as demonstrated above, you would multiply x by itself. If you count the variables in the equation, x squared has two x's, while x alone has only one x in the equation. Because there is only one x, and the exponent represents how many of that number (in this case, x) you multiply by itself, x is assumed to be to the first power, or to the power of one.
What is the degree for a number without a variable?
anything without a variable is to the first power. To find the degree, you look at what the power of the number is and that will be the degree. The degree is the number of times your coefficient is a factor. Since the exponent is one, so is the degree. Ex. 2x squared = 2nd degree
What is an expression that is a number and a variable or a product of a number and one or more variables?
In Algebra a term is either a single number or variable, or numbers and variables multiplied together.
How do you use ratios and proportions?
Proportions: Our example: 4/x = 7/9First, find which fraction is missing a number/is replaced with a variable. In this case, it is the first one: 4/x. Next, cross multiply. You multiply the number shown in the variable fraction by the opposite number in the other fractions. So you would multiply 4x9, because one is a numerator and the other is a denominator. Once you get that number, divide it by the other number not used, which would be 7. 36 divided by 7 is 5.142857>. That means x=5.142857. Ratios: Ratios are any equations that compare numbers, like fractions or proportions. They can be written in proportion form: 4/5=7/8, or fraction form: 9/20.
What is a method for solving a system of linear equations in which you multiply one or both equations by a number to get rid of a variable term?
It is called solving by elimination.
How do you multiply 2 to 4 digit numbers by 1 digit number without regrouping?
by one by one
Is a variable with no power assumed to be to the power of one?
Yes. If we don't see an exponent, the exponent is understood to be one. Just like if we don't see a sign, the sign is assumed to be positive. This in no way constricts or limits the variable. The variable can still be anything at all. But assumptions like this are part of mathematics. How tedious would it be to have to write "x1" for each x? In any case, x1 = x so it is almost pointless.Yes, because if the variable (hypothetically speaking) is 1 (and it can be any number in the world, but 1 is an example), and the exponent (power) is 1, there is only one number to multiply, therefore, the number can only be by itself. If it is squared (to the second power) then you multiply the variable against itself (in this case, 1 X 1), but if the variable doesn't have an exponent, it is assumed to be to the power of one. Take the number 2, for example. If 2 is the variable, x, and x is alone, and you multiply how big the number is of the exponent, and because there is none, it is to the first power.X squared looks like this: x X xX (a.k.a. x to the first power) looks like this: xIf there is no exponent, you only multiply what is there, which there is only one variable, so it is assumed to be to the first power. If it were squared, or to the second power as demonstrated above, you would multiply x by itself. If you count the variables in the equation, x squared has two x's, while x alone has only one x in the equation. Because there is only one x, and the exponent represents how many of that number (in this case, x) you multiply by itself, x is assumed to be to the first power, or to the power of one.
What is the degree for a number without a variable?
anything without a variable is to the first power. To find the degree, you look at what the power of the number is and that will be the degree. The degree is the number of times your coefficient is a factor. Since the exponent is one, so is the degree. Ex. 2x squared = 2nd degree
How much fabric is used to make school uniform for a whole class?
You would need to work out the material needed for one uniform, then multiply by the number of pupils in a class - the number of pupils is variable.
Is a constant a number variable or the product of a number and one or more variables?
A constant is not a variable at all, and none of its factors was a variable. It is constant.
What is a example of one step equations?
Take a variable, and multiply it by another, making sure to only use variables to represent your outcome variable.
What is one term that is expressed as a real Number variable a product or quotient of a variable and real number?
It is a term.
What is one term that is expressed as a real number a variable a product or quotient of a variable and real number?
It is called a term.
What has one term that is expressed as a real number a variable a product or quotient of a variable and real number.?
A monomial.
What is a number a variable or the product of a number and one or more varables?
a
What is an expression that is a number and a variable or a product of a number and one or more variables?
In Algebra a term is either a single number or variable, or numbers and variables multiplied together.
