Dianna has 7 quarters, 3 dimes, and 8 nickels in her purse. She reaches into her purse and randomly grabs two coins. What is the probability that Dianna grabs a dime first and then a nickel?

Answers

Answer 1
Answer:

There are 18 coins total in her bag:

7+3+8=18coins

3 of the 18 coins are dimes, so the odds of first drawing a dime are 3/18

P(dime)=3/18

Since the nickel was taken out and not replaced, there are now 17 coins in her purse.

18-1=17coins

8 of the 17 remaining coins are nickels, so the odds of drawing a nickel are 8/17.

P(nickel)=8/17


Now we multiply the two probabilities by eachother to find out the odds of both occurring...


P(dime)*P(nickel)=

3/18*8/17=24/306=8/103=0.078=8%

The probability of grabbing a dime and then a nickel are 8/103 or 0.078 or an 8% chance, whichever way you'd prefer to write it.


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Answers

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Use the multiplication principle of equality to eliminate fractions, then solve for x3/4x-3/10=1/4+6/5x

Answers

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What number is 164,502,423 decreased by 100,000

Answers

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What is the value of x in the equation 4(2x + 10) = 0?−5

−7

5

7

Answers

4(2x+10)=0
8x+40=0
8x=-40
x=-40/8
x=-5

Answer:

x = -5

Step-by-step explanation:

i checked it with photo math

Please i need this for hwk

(3n+5)/(3n)-(n)/(n-1)

Answers

ANSWER :

» 14n-6/3

refer to the above attachment ↑

Nancy winter local zoo that featured 11 monkey exhibits if these monkey exhibit make up 55% of the zoo exhibits then how many exhibits does the zoo have until the round your answer to the nearest whole number if necessary​

Answers

Answer:

20 total exhibits at the zoo

Step-by-step explanation:

55% of 20 = 11 (monkeys)