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Crank
3 years ago
5

Twice a number increased by 5?? in algebraic expression

Mathematics
2 answers:
Brut [27]3 years ago
7 0

To write this as an algebraic expression, remember that twice a number means that 2 is being multiplied by a number. Since we are not solving, we can just use the variable n to represent the number that is being multiplied by 2. Finally, adding 5 to the number we will get the expression 2n + 5.

Romashka [77]3 years ago
6 0
2x+5 would be the equation

x is the "number" that is unknown, it's what's called a variable. Because you need two times a number(x) you put a coefficient of 2 in front of it, then simply add 5.

Examples with known variable values:
2(4)+5=13
2(2)+5=9
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Answer:

x = - 8/23

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Step-by-step explanation:

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and

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The first step to solve this would be to get what one of the two variables equal. The easiest in this case is y from the first equation.

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Now you can take this y value and plug it into the section equation.

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Once you get the x value you can plug it back into equation one to get y's value

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