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astraxan [27]
3 years ago
15

i am a digit in each of the numerals 756 657 576 my value is different in all numerals. what digit am i? what vakue do i stand f

or in each numerals
Mathematics
1 answer:
Mazyrski [523]3 years ago
8 0
7. I know this because it is the only digit that isn’t in the same place twice. In the first numeral it stand for 700. In the second numeral it stands for 7. In the third numeral it stands for 70.
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Pythagorean theorem
marta [7]

Answer:

x = 8

Step-by-step explanation:

a^{2} +b^{2} =c^{2} \\ so 8^{2} +b^{2} =\sqrt{80} ^{2}

rearrange the formula:

\sqrt{80} ^{2} - 8^{2} = b^{2}

80 - 64 = b^2

b^2 = 16\\b  = \sqrt{16}

\sqrt{16}  = 4

x = 4+4 = 8

7 0
3 years ago
X+y=2 2x^2+xy+1 Plz answer
iren2701 [21]

Answer:

answer is y^2-6y+9

Step-by-step explanation:

first take out the value of x from equation 1 which is x=(2-y)

then put the value of x in equation 2 u will get ur answer as y^2-6y+9

6 0
3 years ago
The average and standard deviation of a measurement is 15.0 ± 5.0. if 100 students measured the value, how many would you expect
AURORKA [14]

Solution: We are given:

\mu=15, \sigma=5

Using the empirical rule, we have:

\mu \pm \sigma covers 68% of data.

Also the percentage of values below mean = Percentage of values above mean = 50%

Now, let's find the z score for x=20

z=\frac{20-15}{5}=1

Therefore, the percentage of values greater than 1 standard deviation above mean 50\% - \frac{68\%}{2} =50\%-34\%=16%

Expected number of students = 16% of 100 = 16


4 0
3 years ago
At a wedding, there are 456 people spread out amongst 45 tables. There are no empty seats. The reception hall has tables that si
uysha [10]
Thats a lot of people for one resturant
3 0
3 years ago
2 please answer this question
nekit [7.7K]
I believe the answer is, 2) End of Reconstruction
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