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3 years ago

how are the steps to solving an inequality similar to those for solving an equation? how are they different

Mathematics

1 answer:

juin [17]3 years ago

7 0

<h2>Similarities:</h2>

With both inequalities and equations, you are solving for a variable by isolating it to one side.
A lot of properties that apply to equations apply to inequalities as well (addition property of equality, division property of equality, etc.)

<h2>Differences:</h2>

If you divide or multiply by a negative number, you must flip the inequality symbol. Dividing or multiplying by a negative number doesn't affect the equal sign.
When graphing the inequality, shaded regions (and the lines themselves if they're solid lines) are a part of the solution. When graphing an equation, only points on that line are solutions.

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3 years ago

What are scenarios for the ratios 2:10, 10:2, & 12:1?

frozen [14]

Answer:

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Step-by-step explanation:

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3 years ago

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3 years ago

The fuel efficiency in miles per gallon of all bmw 320i's is (approximately) normally distributed with a mean of 25 and a standa

grigory [225]

Given:
μ = 25 mpg, the population mean
σ = 2 mpg, the population standard deviation

If we select n samples for evaluation, we should calculate z-scores that are based on the standard error of the mean.
That is,
$z= \frac{x-\mu}{\sigma / \sqrt{n} }$

The random variable is x = 24 mpg.

Part (i): n = 1
σ/√n = 2
z = (24 -25)/2 = -0.5
From standard tables,
P(x < 24) = 0.3085

Part (ii): n = 4
σ/√n = 1
z = (24 -25)/1 = -1
P(x < 24) = 0.1587

Part (iii): n=16
σ/√n = 0.5
z = (24 - 25)/0.5 = -2
P(x < 24) = 0.0228

Explanation:
The larger the sample size, the smaller the standard deviation.
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3 years ago

WILL GIVE BRAINLIEST TO 1ST<br> 4x+188=6x+216

Ulleksa [173]

Answer:

x = -14

Step-by-step explanation:

Let's solve your equation step-by-step.

4x + 188 = 6x +216

Subtract 6x from both sides:

4x + 188 - 6x = 6x + 216 - 6x

-2x + 188 = 216

Subtract 188 from both sides:

-2x + 188 - 188 = 216 - 188

-2x = 28

Divide both sides by two:

$\frac{-2x}{-2}=\frac{28}{-2}$

$x = -14$

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3 years ago