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sammy [17]
3 years ago
5

What is the answer 5(x-4)=3x+4

Mathematics
2 answers:
ruslelena [56]3 years ago
4 0

Step-by-step explanation:

Simplify the left side:

5x - 20 = 3x + 4

Move all terms containing  x  to the left side of the equation:

2x - 20 = 4

Move all terms not containing  x  to the right side of the equation:

2x = 24

Divide each term by  2  and simplify:

x = 12

SIZIF [17.4K]3 years ago
4 0

Answer:

\boxed{\bold{x=12}}

Step-by-step explanation:

Add 20 to both sides

\bold{5x-20+20=3x+4+20}

Simplify

\bold{5x=3x+24}

Subtract 3x from both sides

\bold{5x-3x=3x+24-3x}

Simplify

\bold{2x=24}

Divide both sides by 2

\bold{\frac{2x}{2}=\frac{24}{2}}

Simplify

\bold{x=12}

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Diane's Tree Trimming Service has trimmed hundreds of trees in the Greater Denver area. The time it takes to trim a tree is norm
kkurt [141]

Answer:P(28.5And we can find this probability with this difference:

P(-0.7

And in order to find these probabilities we use tables for the normal standard distribution, excel or a calculator.

P(-0.7

So then the best answer would be 21.82 %

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 time it takes to trim a tree of a population, and for this case we know the distribution for X is given by:

X \sim N(32,5)  

Where \mu=32 and \sigma=5

We are interested on this probability

P(28.5

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

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:P(28.5And we can find this probability with this difference:

P(-0.7

And in order to find these probabilities we use tables for the normal standard distribution, excel or a calculator.

P(-0.7

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8 0
3 years ago
Convert the angle θ=180​∘ to radians.
Kazeer [188]

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Step-by-step explanation:

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3 0
3 years ago
The length,AB of the rectangular lot is 1 foot less than two times its width, BC. If the perimeter of the rectangular lot 394 fe
r-ruslan [8.4K]

Answer:

AB=131\ ft

Step-by-step explanation:

we know that

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where

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we have

AB=2BC-1 ---> equation B

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substitute equation B and equation C in equation A

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solve for BC

394=2(3BC-1)

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BC=66\ ft

<em>Find the value of AB</em>

AB=2BC-1

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AB=131\ ft

6 0
3 years ago
Statistics when mode is best measure of central tendency.
ehidna [41]

Answer:

The mode is the least used of the measures of central tendency

Step-by-step explanation:

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