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lapo4ka [179]
2 years ago
15

Identify the quadratic equation with -1/3 and -1 as its roots.

Mathematics
1 answer:
horsena [70]2 years ago
6 0

Answer:

x^2+(4/3)x+1/3

Step-by-step explanation:

In order to find the quadratic equation, you put the roots in this format:

(x-a)(x-b)=0

(x-(-1/3))(x-(-1))=0

(x+1/3)(x+1)=0

Then you would solve:

x^2+x+(1/3)x+1/3

= x^2+(4/3)x+1/3

Hope this helps!

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Sergio [31]

Answer:   294.4 m²

<u>Step-by-step explanation:</u>

Separate the shaded region into two parts:

  1. The section containing the central angle of 230° (360° - 130°)
  2. The triangle with sides 11.1, 11.1 & 20.12 (use Law of Cosines)

1.\ Area(A)=\pi\ r^2\ \bigg(\dfrac{\theta}{360}\bigg)\\\\\\.\qquad \qquad =\pi(11.1)^2\bigg(\dfrac{230}{360}\bigg)\\\\\\.\qquad \qquad =247.3

2.\ \text{Use Law of cosines to find the length of the third side.}\\\text{ Then use Heron's formula to find the Area of the triangle.}\\\\s=\dfrac{11.1+11.1+20.12}{2}=21.16\\\\\\A=\sqrt{s(s-a)(s-b)(s-c)}\\\\.\ =\sqrt{21.16(21.16-11.1)(21.16-11.1)(21.16-20.12)}\\\\.\ =\sqrt{2227}\\\\.\ =47.1

Area of shaded region = Area of (1) + Area of (2)

                                      =    247.3     +      47.1

                                      =               294.4

8 0
4 years ago
Read 2 more answers
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natali 33 [55]

Answer:

Step-by-step explanation:

correct equation is n - 31 = 52

3 0
3 years ago
What is the difference?<br>​
OleMash [197]

Answer:

B

Step-by-step explanation:

In the attached file

8 0
3 years ago
No clue what this is either haha​
dybincka [34]

Answer:

x=27

Step-by-step explanation:

63+90+x=180

63+90=153

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6 0
3 years ago
If A = 3r^2h^2, and (rh) increases by 100%, then the new A is how many times greater than the old A? PLEASE HELP ME!!! (Specify
Maslowich

Answer: the answer is 3

Step-by-step explanation:

An increase of 100% in the value of (rh) means the value doubles. When that doubled value is squared, the new area is 4 times the old area.The question asks how many times GREATER the new A is than the old A. 4 times AS LARGE AS is a 300% INCREASE, which is 3 TIMES LARGER THAN.So the grammatically correct answer is 3 

3 0
2 years ago
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