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marta [7]
3 years ago
15

2. Samantha's mom has a koi fish pond at the corner of her backyard. Samantha wanted to install a brick walkwa on two sides of t

he pond. Below is a picture of the pond." Assuming that the walkway has the same width, x, along its two sides, and assuming the entire walkway will use exactly 6 ft. of brick, answer the following questions. Brick C. Use any method to figure out how much the width, x, of the walkway will be. Make sure you show your work.​
Mathematics
1 answer:
tensa zangetsu [6.8K]3 years ago
3 0

Answer:

3 feets

Step-by-step explanation:

Given that :

Entire walkway uses 6 feets of brick

Width of walkway = x

Width of walkway is the same along both sides ;

SINCE, the number of sides of the walkway = 2 and each side is the same

Hence,

x + x = 6 feets

2x = 6 feets

x = 6 feets / 2

x = 3 feets

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Consider the following game, played with three standard six-sided dice. If the player ends with all three dice showing the same
ddd [48]

Answer:

a

 P(A) =  \frac{1}{36}

b

P(B) = \frac{15}{36}

c

P(U) = \frac{11}{36}

Step-by-step explanation:

From the question we are told that

   The  number of dice is  n  =  3

Generally  for all three dice to show the same number the second and the third dice must have the same outcome  as the outcome of the first dice.

This means that the number of outcome the first die can  have is  6  (6 sides), the number of outcome which the second and the third dice can have is  1 (they must match the first )

So the probability that all three dice show the same number on the first roll is mathematically represented as

      P(A) =  \frac{6}{6} * \frac{1}{6} *  \frac{1}{6}

=>   P(A) =  \frac{1}{36}

Generally for two of the three dice show the same number after the first roll then the number of outcome for  one of the  dice would be is  6 , the number of outcome for another one must be   1(i.e it must match the first ) , the number of outcome for the remaining one must be   5 (i.e it can show any of the remaining  5  sides which the first and second dice are not showing )

Now the number of ways of selecting this 2 dice that show the same number from the 3 dice is mathematically represented as

     N  =  ^3C_2

Here C stands for combination

So

      N  =  ^3C_2  = 6

So the probability that exactly two of the three dice show the same number after the first roll is mathematically represented as  

      P(B) = N   \frac{1}{6} *  \frac{5}{6}

=>  P(B) = \frac{15}{36}

Generally from the question we are told that if two dice match, the player re-rolls the die that does not match.

Now the probability that  the die that did not match the first  time will match the second time is

     P(E ) =  \frac{1}{6}

Generally if that one die does not show the same number in the second round , the probability that it will match  in the third round is

    P(R) =  \frac{5}{6} *  \frac{1}{6}

Generally the probability that he wins (i.e when all three are showing the same number ) and  exactly two is showing the same number is mathematically represented as

       P(K) =  P(E)* P(B) + P(R)* P(B)

=>    P(K) =  \frac{1}{6} * \frac{15}{36}  +  \frac{5}{6} *  \frac{1}{6} * \frac{15}{36}

=>  P(K)= \frac{165}{1296}

So the probability that the player wins, conditioned on exactly two of the three dice showing the same number after the first roll is mathematically represented as  

    P(U) =  \frac{\frac{165}{1296}}{\frac{15}{36} }

=>  P(U) = \frac{11}{36}

     

 

6 0
3 years ago
7/9 - 4/3w = -5/6 <br> what is w
borishaifa [10]

Answer:

w=1 5/24

Step-by-step explanation:

7/9-4/3w=-5/6

-4/3w=-5/6-7/9

-4/3w=-15/18-14/18

-4/3w=-29/18

w=-29/18:(-4/3)

w=29/18*(3/4)

w=29*3/18*4

w=29/6*4

w=29/24

w=1 5/24

4 0
3 years ago
Find the percent of decrease from 240 to 120. Round to the nearest tenth of a percent, if necessary.
KiRa [710]

the difference from 240 to 120 is 50%

3 0
3 years ago
What does this equal 4x+27=3x
EastWind [94]

Answer:

-27 = x

Step-by-step explanation:

4x+27=3x

Subtract 4x from each side

4x-4x+27=3x-4x

27 = -x

Multiply by -1

-27 = x

5 0
3 years ago
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Plzzz help with this
love history [14]
The volume of the cylinder is 1,286.1.
7 0
2 years ago
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