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Llana [10]
3 years ago
7

5. Which of the following is a linear equation? PLEASE HELPP!!

Mathematics
2 answers:
matrenka [14]3 years ago
5 0

Answer:

B

Step-by-step explanation:

Linear equation with one variable has the form of ax+b=0

Since when you simplify you get 0=\frac{11}{3}x+18

pav-90 [236]3 years ago
4 0

Answer:

The linear equation is Option B

Step-by-step explanation:

The concept related to this question is this:

A linear equation is an equation that the exponent of the all of the variables in the equation is 1

Therefore a linear equation doesn´t have square root (like Option A), cuadratic expressions (like Option D), and the variable isn't dividing coefficients (like Option C)

We have analyze every option in order to apply this concept and find the right answer

Option A: \sqrt{x} + 14=15 x

In this equation, the square root contains one of the variable.

Now, a square root can be expressed as a fractional exponent, following this rule:

\sqrt[n]{x} = x^{\frac{1}{n}}

For a square root:

n = 2

Therefore:

\sqrt{x} =x^{\frac{1}{2}}

And the equation can be written in this way:

x^{\frac{1}{2}}+14=15x

Like in this equation has one of its variables with an exponent different than 1, this option isn't a linear equation

Option B: \frac{10}{3}x-3=7x+15

In this case the exponents of all of the variables are 1, therefore this option is a linear equation

Option C: \frac{10}{3}x-3=\frac{7}{x}+15

In this case there is a variable dividing a coefficient, therefore its exponent follows this rule:

\frac{1}{x} = x^{-1}

Therefore, the equation can be written in this way:

\frac{10}{3}x-3=7x^{-1}+15

Therefore, the exponent of this variable is different than 1, this option isn't a linear equation

Option D: 3x^{2} +10x=5

In this case the exponent of the first variable is different than 1 (3x^{2}), therefore this option isn't a linear equation

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zepelin [54]

Answer:

20

Step-by-step explanation:

You can take a 0 off of 100.

10/5=2

Add the 0 back to the end

20 is your answer.

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4/ 12

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Step-by-step explanation:

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Answer:

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3 years ago
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Snezhnost [94]
<h2>Answer</h2>

f(x) = 5(1.25)x + 4

<h2>Explanation</h2>

To solve this, we are going to use the standard exponential equation:

f(x)=a(1+b)^x

where

a is the initial amount

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x is the time (in months for our case)

Since the hours of classic music remain constant, we just need to add them at the end. We know form our problem that Sue initially has 5 hours of pop, so a=5; we also know that every month onward, the hours of pop music in her collection is 25% more than what she had the previous month, so b=\frac{25}{100} =0.25. Now let's replace the values in our function:

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Nataly_w [17]

Step-by-step explanation:

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