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Virty [35]
3 years ago
12

(x+5)to the second power -4=12​

Mathematics
1 answer:
Softa [21]3 years ago
5 0

Answer:

x = 3i

Step-by-step explanation:

(x+5)² - 4 = 12

simplify (x+5)²

x × x + 5 × 5 - 4 = 12

x² + 25 - 4 = 12

x² + 21 = 12

combine the like terms

x² = 12 - 21

x² = -9

square root both sides to solve for x

√x² = √-9

the square cancels the square root, so we have

x = √-9

x = 3i

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Answer:

7 slides

Step-by-step explanation:

Sum of exterior angles of any polygon is always 360∘, it can never be 900∘. Hence, there cannot be any polygon like this.

It appears that by error the word "exterior" has been mentioned. In case sum of interior angles is 900∘,

total sum of all the angles is 900∘+360∘=1260∘.

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3 years ago
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Step-by-step explanation:

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3 years ago
4•f(6)-6•g(5)=?<br> i need help ASAP!
adell [148]

Answer:

6

Step-by-step explanation:

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5 0
3 years ago
Urgent please
Natasha2012 [34]

Boys : Girls = 3 : 5


3 + 5 = 8 parts


<u>Find 1 part:</u>

8 parts = 40 students

1 part = 40 ÷ 8 = 5 students


<u>Find number of boys and girls:</u>

3 parts = 3 x 5 = 15 girls

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Original Number of students = 15 : 25


<u>Find new ratio:</u>

New Ratio = 15 + 3 : 25 - 1 = 18 : 24 = 3 : 4


Answer: 3 : 4

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