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Digiron [165]
2 years ago
7

What is the value of x? A. 30 B 45 C. 55 D. 60

Mathematics
2 answers:
Nookie1986 [14]2 years ago
7 0
The answer is 45:
1.) The top angle of 3x would be the same as the bottom as opposite angles with parallel lines are equal.
The left and right angles would also be the same for the same reason.
Therefore, 3x + 3x + x + x = 8x
2.) All the angles around the centre ‘R’ add up to 360° , so to workout x you workout out 360 divided by 8 which equals 45°
HOPE THIS WAS HELPFUL AND EASY TO UNDERSTAND :)
serious [3.7K]2 years ago
6 0

Answer:

B

Step-by-step explanation:

x and 3x are adjacent angles and sum to 180° , then

x + 3x = 180

4x = 180 ( divide both sides by 4 )

x = 45

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An experiment consists of ranomly drawing three cards in succession without replacement from a standard deck of 52 cards. Let A
nadya68 [22]

Answer:

0.0045248 ;

0.1312218 ;

0.0001809 ;

0.1659729

Step-by-step explanation:

Number of Kings in deck = 4

Total number of cards in deck = 52

Picking without replacement :

A = King on first draw :

P(A) = 4 / 52

A = King on 2nd draw :

P(B) = 3 / 51

A = King on 3rd draw :

P(C) = 2 / 50

1.) P(A n B) = P(A) * P(B)

P(A n B) = 4/52 * 3/51 = 12 / 2652 = 0.0045248

2.) P(A u B) = P(A) + P(B) - P(AnB)

P(AuB) = 4/52 + 3/51 - 0.0045248 = 0.1312218

3.) P(A ∩ B ∩ C) = P(A) * P(B) * P(C)

P(A ∩ B ∩ C) = 4/52 * 3/51 * 2/50 = 0.0001809

4.) P(A U B U C) =

P(A) + P(B) + P(C) - P(AnB) - P(AnC) - P(BnC) - P(AnBnC)

P(AnC) = P(A) * P(C) = 4/52 * 2/50 = 0.0030769

P(BnC) = P(B) * P(C) = 3/51 * 2/50 = 0.0023529

4/52 + 3/51 + 2/50 - 0.0045248 - 0.0030769 - 0.0023529 + 0.0001809 = 0.1659729

6 0
3 years ago
-x - 1 = 221 + 2x <br> plzzzzzzzzz help
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5 0
3 years ago
Please help if you want brianleist (no links please!) Ty!
nikitadnepr [17]

Answer:

The answer is 40 can I please get brainleist

5 0
2 years ago
Can anybody helppp meee please
crimeas [40]

Answer:

r^2=(A/pi)

Step-by-step explanation:

if A=pi*r^2 then maybe dividing by pi to get r^2 alone says r^2=(A/pi) or to get rid of the exponent you may square root each side so r=(sqrt(A/pi))

3 0
2 years ago
There are 12 plants in 3 rows. How many plants are in each row? multiplication<br> show your work
anygoal [31]
There are 4 per row.
12 divided by 3 = 4.
7 0
2 years ago
Read 2 more answers
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