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sineoko [7]
3 years ago
15

4+3x=25

gn="absmiddle" class="latex-formula">
Mathematics
1 answer:
Black_prince [1.1K]3 years ago
4 0
x=7 

Solve for x:
3 x + 4 = 25

Subtract 4 from both sides:
3 x + (4 - 4) = 25 - 4

4 - 4 = 0:
3 x = 25 - 4

25 - 4 = 21:
3 x = 21

Divide both sides of 3 x = 21 by 3:
(3 x)/3 = 21/3

3/3 = 1:
x = 21/3

The gcd of 21 and 3 is 3, so 21/3 = (3×7)/(3×1) = 3/3×7 = 7:
Answer: x = 7
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(A) n(Eᶜ)=40

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(5,6),(5,7),(5,8),(5,9),(5,10),(5,11)

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(7,8),(7,9),(7,10),(7,11)

(8,9),(8,10),(8,11)

(9,10),(9,11)

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The Sample Space of the complement of E is:

(1,2),(1,4),(1,6),(1,8),(1,10)\\(2,3),(2,4),(2,5),(2,6),(2,7),(2,8),(2,9),(2,10),(2,11)\\(3,4),(3,6),(3,8),(3,10)\\(4,5),(4,6),(4,7),(4,8),(4,9),(4,10),(4,11)\\(5,6),(5,8),(5,10)\\(6,7),(6,8),(6,9),(6,10),(6,11)\\(7,8),(7,10)\\(8,9),(8,10),(8,11)\\(9,10)\\(10,11)\\

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