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irga5000 [103]
3 years ago
11

Four more than 3 times a number is 31. Find that number

Mathematics
2 answers:
SpyIntel [72]3 years ago
7 0

Answer:9

Step-by-step explanation: 31-4=27

27÷3=9

nikitadnepr [17]3 years ago
5 0

Answer:

Step-by-step explanation:

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Step-by-step explanation:

Short and sweet

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4 + 8x = -12 <br> what is X?
Elena L [17]

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x=-2

Step-by-step explanation:

4+8x=-12

-4       -4

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3 years ago
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Suppose each of 12 players rolls a pair of dice 3 times. Find the probability that at least 4 of the players will roll doubles a
polet [3.4K]

Answer:

Our answer is 0.8172

Step-by-step explanation:

P(doubles on a single roll of pair of dice) =(6/36) =1/6

therefore P(in 3 rolls of pair of dice at least one doubles)=1-P(none of roll shows a double)

=1-(1-1/6)3 =91/216

for 12 players this follows binomial distribution with parameter n=12 and p=91/216

probability that at least 4 of the players will get “doubles” at least once =P(X>=4)

=1-(P(X<=3)

=1-((₁₂ C0)×(91/216)⁰(125/216)¹²+(₁₂ C1)×(91/216)¹(125/216)¹¹+(₁₂ C2)×(91/216)²(125/216)¹⁰+(₁₂ C3)×(91/216)³(125/216)⁹)

=1-0.1828

=0.8172

7 0
3 years ago
How would i multiply 1/4 by 18 what will it be???
Lyrx [107]

Answer:

18/4 or 4  1/2 or 4.5

Step-by-step explanation:

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8 0
3 years ago
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D

Step-by-step explanation:

if you have 37 and however many you eat you subtract from that 37 giving you R

4 0
3 years ago
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