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bekas [8.4K]
3 years ago
9

PLEASE PLEASE HELP! QUICKLY!

Mathematics
1 answer:
Oksanka [162]3 years ago
5 0

Step-by-step explanation:

we have

m∠3 = 128°

m∠3 = m∠7---------------- > Corresponding Angles

180°=m∠7+m∠8---------- > Supplementary Angles

therefore

m∠8=180°-128°=52°

the answer is the m∠8 is 52°

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Plz awnser because Aleks is dumb
Black_prince [1.1K]
Since you know it's a square, you also know that all the sides are 3 2/3. So to find area you multiply, so 3 2/3 x 3 2/3. An easy way to do this is convert it to a mixed number (11/3) and then multiply: 
11/3 x 11/3 = 121/9
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3 years ago
In general, what can you conclude about a pair of angles that are both congruent and supplementary?
dem82 [27]

Answer:

Both angles are right angles.

Step-by-step explanation:

Supplementary angles sum to 180°. Since we know that both angles are congruent, let's call them x and x. We can write the following equation:

x + x = 180

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3 years ago
Read 2 more answers
Find Lowest common factor of following questions .<br>56, 42, 28​
Montano1993 [528]

Answer:

\boxed{\textsf{ The LCM of 56 , 42 , 28 is \textbf{ 168}.}}

Step-by-step explanation:

We need to find out the LCM of 56 , 42 , 28 . So Lowest Common Multiple known as LCM is the lowest multiple which is divisible by all the numbers whose LCM is taken out . It can we done by two methods. Both of which are discussed in the attachment .

For complete solution kindly refer to the attachment .

<u>Related</u><u> Information</u><u> </u><u>:</u><u>-</u><u> </u>

<u>•</u><u> </u><u>HCF </u><u>:</u><u>-</u>

  • It stands for Highest Common Factor . It is the highest numbers which divides out completely the numbers without leaving remainder of the numbers whose HCF is we are finding out .

3 0
3 years ago
Analyze the diagram below and complete the instructions that follow.
Jlenok [28]

Step-by-step explanation:

scale \: factor =  \frac{7}{28}  =  \frac{1}{4}  \\

ratio \:of \:surface \:areas\\=\frac{2[5\times 7 + 7\times 3+3\times 5]}{2[20\times 28+ 28\times 12+12\times 20] }\\\\=\frac{[35 + 21+15]}{[560+ 336+240] }\\\\=\frac{71}{1136}\\\\=\frac{1}{16}\\\\= 1\: :\: 16

3 0
2 years ago
Slader records show that the average life expectancy of a pair of shoes is 2.2 years with astandard deviation of 1.7 years. A ma
Oksanka [162]

Answer:

For every 1000 pairs sold, the manufacturer expect to replace 239 pairs for free.

Step-by-step explanation:

Given:

Mean (μ) = 2.2, Standard deviation(S.D) (σ) = 1.7 years and x = 1 (1 year)

Let's find the Z score.

Z = \frac{x - mean}{S.D}

Now plug in the given values in the above formula, we get

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Now we have to use the z-score table.

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The cannot be in decimal, when we round off to the nearest whole, we get

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3 years ago
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