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2 years ago

9

Assume you have two six-sided dice - both numbered 1 to 6 - and add the total of the dice after each roll. Leave all answers as

a fraction a/b. What is the probability of rolling a 4

1 answer:

Effectus [21]2 years ago

8 0

The probability of rolling two dice and getting a four is 3/36.

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She needs more then 472 and has 296 so she still needs 176 because 472-296=176
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3 years ago

Ling worked three more hours on Tuesday than she did on Monday. On Wednesday, she worked one hour more than twice the number of

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Let x be the number of hours ling work on monday.

We know that she worked three more hours on tuesday that in monday, this can be express as :

$x+3$

We also know that in wednesday she worked on more hour than twice the number on mondays, this can be expressed as:

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The total number of hours she worked this three days in two more than five the number of hours she worked on monday, this can be express as :

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Now , once we have all the expressions we add the expressions of the days and equate them to the total

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Now we solve the equation

$x+(x+3)+(2x+1)=5x+2\\x+x+3+2x+1=5x+2\\4x+4=5x+2\\5x-4x=4-2\\x=2$

Therefore , she worked 2 hours on monday.

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