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alexira [117]
3 years ago
15

According to Egyptian artifacts, how early was the concept of the square root known?

Mathematics
2 answers:
sasho [114]3 years ago
6 0

Answer:

1650 a. C

Step-by-step explanation:

Square roots are mathematical expressions that arose when posing various geometric problems such as the diagonal length of a square. The Papyrus of Ahmes dated around 1650 a. C., which copies older texts, shows how the Egyptians extracted square roots.

kolbaska11 [484]3 years ago
3 0
The answer for your question is 1850 BCE 
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Find a quadratic polynomial with integer coefficients which has x = 2/9, ± SQRT23/9 as its real zeros.
melomori [17]

Answer:

The quadratic polynomial with integer coefficients is y = 81\cdot x^{2}-36\cdot x -19.

Step-by-step explanation:

Statement is incorrectly written. Correct form is described below:

<em>Find a quadratic polynomial with integer coefficients which has the following real zeros: </em>x = \frac{2}{9}\pm \frac{\sqrt{23}}{9}<em>. </em>

Let be r_{1} = \frac{2}{9}+\frac{\sqrt{23}}{9} and r_{2} = \frac{2}{9}-\frac{\sqrt{23}}{9} roots of the quadratic function. By Algebra we know that:

y = (x-r_{1})\cdot (x-r_{2}) = x^{2}-(r_{1}+r_{2})\cdot x +r_{1}\cdot r_{2} (1)

Then, the quadratic polynomial is:

y = x^{2}-\frac{4}{9}\cdot x -\frac{19}{81}

y = 81\cdot x^{2}-36\cdot x -19

The quadratic polynomial with integer coefficients is y = 81\cdot x^{2}-36\cdot x -19.

5 0
2 years ago
Which relationship describes angles 1 and 2?
umka2103 [35]
I belive its B,and D,
B because, the lines are supplementary(because supplementary means it equal 180 degrees in length, which is those two angles.)
D, because they are put in such an angle in which making them adjecant.
Hope I helped:-) Bye bye.
8 0
2 years ago
Read 2 more answers
A yearbook printer charges based on the number of pages printed. Here is a table that shows the cost of some recent yearbooks:
asambeis [7]
y = 0.012x + 0.65<span><span><span>

Number of pages </span> <span>     50.00    </span><span>  100.00 </span><span>   150.00 </span> <span>   200.00 </span> </span> <span> <span> 
Cost </span> <span>                           1.25 </span> <span>         1.85 </span> <span>       2.45 </span> <span>       3.05

x = number of pages
y = cost

intervals of x = 50 pages
intervals of y = 0.60
0.60 / 50 = 0.012

y = 0.012x + 0.65

</span></span></span><span> <span> </span><span><span> <span>                      x </span> <span>      0.012*x </span> <span>              y  </span>
</span> <span> 0.012 <span>           50 </span> <span>         0.60 </span> <span>    0.65 </span> <span>   1.25
</span></span><span>0.012 <span>         100 </span> <span>         1.20 </span> <span>    0.65 </span> <span>   1.85
</span> </span> <span> 0.012 <span>         150 </span> <span>         1.80 </span> <span>    0.65 </span> <span>   2.45
</span> </span> <span> 0.012 <span>         200 </span> <span>         2.40 </span> <span>    0.65 </span> <span>   3.05 </span> </span></span></span><span>
</span>
5 0
3 years ago
Sklyer has 15 less than twice as many customers as when she started selling newspapers. She now has 155 customers. How many did
arlik [135]
155 = 2x -15
170 = 2x
85 = x

She had 85 when she first started. 

8 0
3 years ago
Read 2 more answers
A wall that is 12 feet high on the building is 36 centimeters high on the model. Find the height on the model of a door that is
cluponka [151]

Answer:

9cm

Step-by-step explanation:

3/12 is equal to 1/4 ratio between the size of the window and the building.

Apply that ratio to the the 36 centimeters to get 36/4 which is equal to 9 centimeters.

8 0
3 years ago
Read 2 more answers
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