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True [87]
2 years ago
14

3x + 4 = 5x - 12; x = 8 true or false?

Mathematics
2 answers:
Elodia [21]2 years ago
8 0

Answer: False

Step-by-step explanation:

3x + 4 =5x - 12

step1: get x by it self

you would get; 4 = 2x - 12

step2; make zero-pairs

you would get;   2x - 8

lastly; 8÷2=4x

Natalija [7]2 years ago
7 0

Answer:

True.

Step-by-step explanation:

To find out if the statement is true, just plug in 8 each time you see x.

3(8)+ 4 = 28

5(8) - 12 = 28

This proves the statement is true, x = 8.

I hope this helps. If you have any more questions, please feel free to post them and someone will be able to help you, whether it's myself or others. Please leave a like, rating, and if possible, Brainliest. Have a great day!    

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frosja888 [35]

a. The center of the circle will be the coordinate point of the marked point inside the circle.

center: (3,-5)

The radius is the distance between the center and any point on the circle.

radius: 4 units

b. standard form for circles: (x-h)²+(y-k)²=r² where (h,k) is the center

standard form: (x-3)²+(y+5)²=16

c. Simplify equation in standard form to get general form.

(x-3)²+(y+5)²=16

x²-6x+9+y²+10y+25=16

general form: x²+y²-6x+10y+18=0

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Mario worked from 8:25 to 12:45 yesterday.Today he will work 11:20 to 3:10. How many hours did he work in all?
Vesnalui [34]

Answer:

Mario worked <em>from</em>

<em><u>8</u></em><em><u>:</u></em><em><u>2</u></em><em><u>5</u></em><em><u> </u></em><em><u>to </u></em><em><u>1</u></em><em><u>2</u></em><em><u>:</u></em><em><u>4</u></em><em><u>5</u></em><em><u> </u></em><em><u>yesterday</u></em>

<em><u>1</u></em><em><u>1</u></em><em><u>:</u></em><em><u>2</u></em><em><u>0</u></em><em><u> </u></em><em><u>to </u></em><em><u>3</u></em><em><u>:</u></em><em><u>1</u></em><em><u>0</u></em><em><u> </u></em><em><u>today</u></em>

<em><u>To </u></em><em><u>find </u></em><em><u>the </u></em><em><u>total </u></em><em><u>time</u></em><em><u> </u></em><em><u>of </u></em><em><u> </u></em><em><u>work </u></em>

<em><u> </u></em><em><u> </u></em><em><u>1</u></em><em><u>2</u></em><em><u>:</u></em><em><u>4</u></em><em><u>5</u></em>

<em><u>-</u></em><em><u>8</u></em><em><u>:</u></em><em><u>2</u></em><em><u>5</u></em>

<em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u> </u></em>

<em><u>4</u></em><em><u>:</u></em><em><u>2</u></em><em><u>0</u></em>

<em><u>again </u></em>

<em><u> </u></em><em><u> </u></em><em><u>1</u></em><em><u>1</u></em><em><u>:</u></em><em><u>2</u></em><em><u>0</u></em>

<em><u>-</u></em><em><u>3</u></em><em><u>:</u></em><em><u>1</u></em><em><u>0</u></em>

<em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em>

<em><u>8</u></em><em><u>:</u></em><em><u>1</u></em><em><u>0</u></em>

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<em><u>4</u></em><em><u>:</u></em><em><u>2</u></em><em><u>0</u></em><em><u> </u></em><em><u>+</u></em><em><u> </u></em><em><u>8</u></em><em><u>:</u></em><em><u>2</u></em><em><u>0</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>1</u></em><em><u>2</u></em><em><u> </u></em><em><u>hours </u></em><em><u>3</u></em><em><u>0</u></em><em><u> </u></em><em><u>min</u></em>

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How do you answer this question.
Ipatiy [6.2K]
Lets write this out:-

\frac{50}{100} + \frac{30}{100}

To answer this we just need to add the numerators of both fractions because the denominator's are already common multiples. 

\frac{50}{100}+ \frac{30}{100} = \frac{80}{100}

Now lets simplify \frac{80}{100}.

\frac{80/20}{100/20}=  \frac{4}{5}

So, \frac{50}{100}+  \frac{30}{100} = \frac{80}{100}= \frac{4}{5}

Hope I helped ya!! xD
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