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satela [25.4K]
3 years ago
5

2 _ 3 --- + 2.3= 3 giving 25 points for the right answer asap

Mathematics
2 answers:
meriva3 years ago
8 0

3 \frac{2}{3}  + 2.3 \\\implies 3 \frac{2}{3} + \frac{23}{10} \\\implies \frac{11}{3} + \frac{23}{10} \\\implies \frac{110+69}{30} \implies \frac{179}{30}

Rom4ik [11]3 years ago
8 0

For this case we must indicate the value of the following expression:

3 \frac {2} {3} +2.3

We have the following mixed number:

3 \frac {2} {3} = \frac {3 * 3 + 2} {3} = \frac {9 + 2} {3} = \frac {11} {3} = 3.6667

So, we have:

\frac {11} {3} + \frac {23} {10} = \frac {10 * 11 + 3 * 23} {30} = \frac {110 + 69} {30} = \frac {179} { 30}

In mixed number we have:

5 \frac {29} {30}

ANswer:

5 \frac {29} {30}

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The measure of one angle of an octagon is two times smaller that of the other seven angles. What is the measure of each angle?
Anestetic [448]

Answer:

7 of the angles measure 144 degrees each and one angle measures 72 degrees

Step-by-step explanation:

Let

x -----> represent the measures of the seven same-size angles,

x/2 ----> represent the measure of the one that is "two times smaller."

we know that

The sum of internal angles of a polygon can be calculated as:

S=180^o(n-2)

where

n is the number of sides of the polygon

In this case

n=8 (octagon)

substitute

S=180^o(8-2)=1,080^o

so

The linear equation that represent this problem is

\frac{x}{2}+7x=1,080

solve for x

\frac{15x}{2}=1,080\\\\15x=2,160\\\\x=144^o

so

\frac{x}{2}=72^o

therefore

7 of the angles measure 144 degrees each and one angle measures 72 degrees

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3 0
2 years ago
Solve the following, round to 2 decimal places. <br>36.67 ÷ 12​
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So 36.67\12= 3.055833 and the 3 repeats so round up the 5 to get 3.06
Hope I’m correct!
5 0
3 years ago
Read 2 more answers
How do i solve 2x-y=9
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20 with a number minus what will equal 9. ^_^
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