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morrisjillian23
22.07.2019 •
Mathematics
Hey can you me posted picture of question : )
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Ответ:
Explanation:
The general formula of the quadratic equation is:
ax²+ bx + c = 0
The given equation is:
x² + 3x - 18 = 0
By comparison, we can find that:
a = 1
b = 3
c = -18
To get the roots, we will use the quadratic formula shown in the attached image.
By substituting in the equation, we would find that:
either x =
or x =
This means that the roots are: 3 and -6
Hope this helps :)
Ответ:
1. 196
2. 210.33
3. 1427.04
Step-by-step explanation:
area= 1/2p ·apothem
P=
apothem= basically radius (the number inside the shape)
1. Area= 1/2·Apothem
0.5 ÷28=56
Area=56·Apothem
apothem = 3.5
56 ·3.5=196
Area=196
2.Area= 1/2·Apothem
0.5 ÷54=27
Area=27·Apothem
apothem =7.79
27 ·7.79=210.33
Area= 210.33
3. Area=1/2·Apothem
0.5÷72=144
Area=144·Apothem
Apothem=9.91
144·9.91=1427.04
Area= 1427.04