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aleksklad [387]
2 years ago
13

Ricky takes 2 coins at random from 3 quarters, 5 dimes, and two nickels in his pocket.

Mathematics
2 answers:
antoniya [11.8K]2 years ago
5 0
What is the P(nickel;then a quarter) with replacement
Stels [109]2 years ago
3 0

|\Omega|=10^2=100\\|A|=2\cdot3=6\\\\P(A)=\dfrac{6}{100}=6\%

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2. Solve this inequality. Show your work. 5.6+2.2.x > 65.6-1.8x​
Nitella [24]

Answer: x>15

Step-by-step explanation: Rearrange the equation by subtracting what is to the right of the greater than sign from both sides of the inequality:

          (56/10)+(22/10)*x-((656/10)-(18/10)*x)>0  

           

Simplify   9/5

           

  56  22      656  9

 (——+(——•x))-(———-(—•x))  > 0  

  10  10      10   5

         

Simplify 328/5

             

  56  22      328 9x

 (——+(——•x))-(———-——)  > 0  

  10  10       5  5  

Adding fractions which have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

328 - (9x)     328 - 9x

——————————  =  ————————

    5             5    

  56/10+22/10.x/5)) >0      (328 - 9x)

   

         

Simplify  11/5

           

  56/10+11/5.x/5))->0 (328-9x  

         

Simplify 28/5

       

  28    11x     (328 - 9x)

 (—— +  ———) -  ——————————  > 0  

  5      5          5      

Adding fractions which have a common denominator

     Adding fractions which have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

28 + 11x     11x + 28

————————  =  ————————

   5            5    

:

 (11x + 28)    (328 - 9x)

 —————————— -  ——————————  > 0  

     5             5      

Adding fractions which have a common denominator

       Adding fractions which have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

(11x+28) - ((328-9x))     20x - 300

—————————————————————  =  —————————

          5                   5    

   Pull out like factors :

  20x - 300  =   20 • (x - 15)  

 20 • (x - 15)

 —————————————  > 0  

     Multiply both sides by  5  

   Divide both sides by  20  

Solve Basic Inequality :

  Add  15  to both sides

            x > 15

4 0
3 years ago
Read 2 more answers
Oceanside Bike Rental Shop charges a 13 dollar fixed fee plus 9 dollars an
tatyana61 [14]
58-13=45 45/9=5 Carlos rented the bike for 5 hours
4 0
4 years ago
Read 2 more answers
Which of the following equations describes the line shown below? Check all
Setler79 [48]

Answer:

y = -1/2 x + 2

Step-by-step explanation:

Which of the following equations describes the line shown below? Check all

that apply.

(-4, 4)

(2, 1)

The standard equation of a line is y = mx,+b

m is the slope

b is he y-inttercept

Get the slope

Slope m = y2-y1/x2-x1

Substitute the coordinate

M = 1-4/2-(-4)

M = -3/6

M = -1/2

Substitute m= -1/2 and (2,1) into y = mx+b

1 = -1/2(2)+b

1 = -1+b

b = 1+1

b=2

Get the equation

Recall y =mx+b

y = -1/2 x + 2

3 0
3 years ago
1. 7a x 8 =168 <br><br><br><br> 2. 7+ 2a =23<br><br><br><br> 3. 6c + 8c =28
EastWind [94]

Answer:

first is 3, then 8, then it's 2

6 0
3 years ago
Read 2 more answers
What is the sigma notation for this arithmetic series : 10+25+40+...+490+505
Lubov Fominskaja [6]

Answer:

Sum (from n = 0 to n = 33) of 10 + 15 * n

Step-by-step explanation:

The sigma notation is to express an arithmetic series as a summation, in this case we can see that it starts at 10 and ends at 505.

What we can notice is that the values are increasing by 15 units, therefore that will be the proportion that accompanies "n".

Now, we must calculate, how many times is "n", in the final value, for this we subtract the initial value, that is 10 and divide it by 15.

505 - 10 = 495/15 = 33

So "n" goes up to 33

So that series is expressed like this:

Sum (from n = 0 to n = 33) of 10 + 15 * n

7 0
3 years ago
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