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3 years ago

What is the variable in the expression 9c-4

Mathematics

2 answers:

nexus9112 [7]3 years ago

6 0

Answer:

Variable is C

Step-by-step explanation:

____ [38]3 years ago

5 0

Answer:

The variable in the expression is 'c'.

Step-by-step explanation:

A variable is a letter that we use to represent a number that changes. "c" is the only letter in the expression, so its the variable.

We use variables when we do not know what the number should be, or when it's unknown.

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With full explanation from the internet like before 3x2-6x+5=0

Elodia [21]

Answer:

$\sf x=1+i\sqrt{\dfrac{2}{3}} \ \quad and \quad \:x=1-i\sqrt{\dfrac{2}{3}}$

Explanation:

Given Expression:

3x² - 6x + 5 = 0

Use the Quadratic Formula:

$\sf x = \dfrac{ -b \pm \sqrt{b^2 - 4ac}}{2a} \ \ when \ \ ax^2 + bx + c = 0$

insert coefficients

$\Longrightarrow \sf x = \dfrac{-\left(-6\right)\pm \sqrt{\left(-6\right)^2-4\cdot \:3\cdot \:5}}{2\cdot \:3}$

$\Longrightarrow \sf x = \dfrac{\left6\right\pm \sqrt{-24} }{6}$

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$\Longrightarrow \sf x =1 \pm i\dfrac{\sqrt{6} }{3}$

$\Longrightarrow \sf x=1+i\sqrt{\dfrac{2}{3}}, \quad 1-i\sqrt{\dfrac{2}{3}}$

6 0

2 years ago

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2x1/8 trying get help it’s hard for me I have difficulty doing these problems

dmitriy555 [2]

Answer:

1/4

2 x 1/8 is also 1/8 + 1/8 and that is then 2/8 and after that when you simplify you get 1/4.

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3 years ago