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saw5 [17]
3 years ago
7

A bowl contains 7 pennies, 9 nickels, and 4 dimes. Elyse removes one coin at random from the bowl and does not replace it. She t

hen removes a second coin at random. What is the probability that both will be dimes?
Mathematics
1 answer:
Vlad [161]3 years ago
6 0

Answer:

The probability is 3/95

Step-by-step explanation:

Okay this is a probability without replacement question.

Firstly we calculate the total number of coins = 7 + 9 + 4 = 20 coins

The probability that the first coin will be a dimes = number of dimes/total number of coins = 4/20 = 1/5

Now she removes a coin without replacement, if it was a dime, total number of coins becomes 19 and the total number of dimes becomes 3; Thus the probability of the second coins being a dimes = 3/19

Thus, the probability of both coins being dimes = probability of first coin being dimes * probability of second coins being dimes

= 1/5 * 3/19 = 3/95

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Juice is made up by diluting concentrate with water in the ratio 1:5. If 200ml of concentrate is used ,how much juice will be ma
natta225 [31]

Answer: 1,200 ml

Step-by-step explanation:

The ratio is 1 : 5.

If 200 ml of concentrate is used, the water used will be:

1     :    5

200 :   x

x = 1,000 ml of water

The amount of juice would be:

= water + concentrate

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= 1,200 ml

5 0
3 years ago
There was a 6 square foot piece of wrapping paper for a birthday present. It takes 3 3/8 feet of square feet of the paper to wra
Citrus2011 [14]

Answer: However, in real life it depends on the shape of the actual presents. If two sheets are used for the 2 presents. There should be enough left from those sheets to use for the third present. (They should be taped together.)


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6/ 27/8

= 6/1 / divide 27/8

= 6^2 /1 x 8/27 ^9              (^) –––>  this mean square root of 2 or 9

6 cancels and 27 cancel

= 16/9

=1  7/9

However  you will still need to buy 2 sheets




3 0
2 years ago
50 POINTS & BRAINLIEST!!!! HELP ASAP!!!
Allisa [31]

6(2x - 11) + 15 = 21

First step use distributive property on the left side to remove the parenthesis, to do this multiply 6 by each term inside the parenthesis:

12x - 66 + 15 = 21

Second step, simplify the left side by combining the like terms:

12x - 51 = 21

Third step, add 51 to both sides of the equation:

12x = 72

Last step, divide both sides by 12:

x = 72/12

x = 6

3 0
3 years ago
5x + 5 equals 16 - 6x​
bulgar [2K]

Answer:x=1

Step-by-step explanation:

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3 years ago
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borishaifa [10]
5/12 and 3/8 is the answer
4 0
3 years ago
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