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2 years ago

Please I just don't get it

Mathematics

1 answer:

Alexus [3.1K]2 years ago

6 0

The solution to the given inequality is x > -5.

{x| x is all real numbers from -5 to infinity excluding -5 its self.}

( -5, ∞ )

<h3>What is the solution to the given inequality?</h3>

Given the data in the question;

-9 - 6x < 21
x = ?

First, we solve for the x in the given inequality.

-9 - 6x < 21

Collect and add like terms

-6x < 21 + 9

-6x < 30

Divide both side by -6.

Note that; when dividing or multiplying both sides by a negative value, the direction of the inequality sign flips to the other side.

-6x/-6 > 30/-6

x > -5

x:| x is all real numbers from -5 to infinity excluding -5 its self.

( -5, ∞ ).

Learn more about inequality here: brainly.com/question/20383699

#SPJ1

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Answer:

The answer is (2,1)

Step-by-step explanation:

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3 years ago

The length of a rectangle is 6 units and its width is 4 units. What is the approximate length of the diagonal of the rectangle?

ss7ja [257]

The correct answer is:  [D]:  " 7.2 units" .
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Explanation:
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Use the Pythagorean theorem:

a² + b² = c² ;

in which:  "6 units" and "4 units" equal the lengths of the right angle (formed by the rectangle); and "c" is the length of the diagonal of the rectangle, or the "hypotenuse", of the right triangle formed by the rectangle; We wish to solve for "c" ;
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6² + 4² = c² ; Solve for "c" ;

↔ c² = 6² + 4² ;

= (6*6) + (4*4) ;

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Take the "positive square root" of each side of the equation; to isolate "c" on one side of the equation; and to solve for "c" ;

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c = √52 ;

At this point, we know the 7² = 49 ; 8² = 64 ; so, the answer is somewhere between "7" and "8" ; yet closer to "7" ; so among the answer choices given;

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However, let use a calculator:

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3 years ago

4. a. On the grid, draw at least three different quadrilaterals that can each be

Julli [10]

Answer:

this is just for part A sorry i dont get part B

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3 years ago

The distribution of the average amount of sleep per night gotten by college students is roughly bell-shaped with mean 412 minute

kirza4 [7]

Answer:

$P(X$

$P(z$

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Solution to the problem

Let X the random variable that represent the scores of a population, and for this case we know the distribution for X is given by:

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Where $\mu=412$ and $\sigma=68$

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And the best way to solve this problem is using the normal standard distribution and the z score given by:

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If we apply this formula to our probability we got this:

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And we can find this probability using the normal standard table or excel and we got:

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3 years ago

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Answer:

Step-by-step explanation:

Let the cost of one soft taco = s

Let the cost of one burrito = b

So we have this system

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Divide the first equation through by 3 and we have that

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Sub (2) into (1) and we have

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2 years ago