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oee [108]
3 years ago
13

What are the solutions of 3x2 + 6x + 6 = 0 –2 ± i –2 ± 2i –1 ± i 1 ± i

Mathematics
1 answer:
velikii [3]3 years ago
4 0
C) Quick way:

3x^2+6x+6=0 ---> x^2+2x+2=0,

sum of solutions is the 'x' coefficient multiplied by -1:  (-1+i)+(-1-i)=-2-->2
Product is the independent term: (-1+i)(=1+i) = (-1)^2-i^2 = 1+1=2

Takes longer to write it down!

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Write 0.21..... as a fraction in simplest form
kondor19780726 [428]
.21 as a fraction would be 21/100
8 0
2 years ago
Read 2 more answers
The value of x is approximately:
solong [7]

Answer:

19.80

Step-by-step explanation:

tan 22= 8/x

tan 22 = 8/x

x = 8/tan 22

x = 19.80

7 0
2 years ago
Find all solutions of the equation in the interval [0°, 360°). cos(x) = -1 ​
nika2105 [10]

Answer:

180°

Step-by-step explanation:

cos(x) = - 1 has only 1 solution in the required interval , that is

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7 0
3 years ago
Geometry Helps please<br> (Only correct Answers only please) Thank you very much.
Levart [38]
<h3>Exact Answer: (160/3)pi</h3><h3>Approximate Answer: 167.47</h3>

The approximate answer results when you use pi = 3.14, and this approximate answer is rounded to two decimal places

note that (160/3)pi is the same as 160pi/3

========================================================

Work Shown:

r = radius = 4

h = height = 10

V = volume of cone

V = (1/3)pi*r^2*h

V = (1/3)pi*4^2*10

V = (160/3)pi exact answer

V = (160/3)*3.14

V = 167.46666....

V = 167.47 approximate answer rounded to two decimal places

8 0
3 years ago
which ones belong to SAS, SSS, HL, AAS, ASA or not congruent?
slava [35]

Answer:

1.ASA

2.AAS

3.?

4.ASA

5.SSS

6.SSS

7.ASA

8 0
2 years ago
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