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Debora [2.8K]
4 years ago
7

Shawn has 25 coins, all nickels and dimes. The total value is $2.00. How many of each coin does he have ?

Mathematics
1 answer:
Sergeu [11.5K]4 years ago
5 0

Answer:

\boxed{15 \ dime \ and \ 10 \ nickel \ coins}

Step-by-step explanation:

1 dime = 10 cents

1 nickel = 5 cents

So,

If there are 15 dimes

=> 15 dimes = 15*10 cents

=> 15 dimes = 150 cents

=> 15 dimes = $1.5

Rest is $0.5

So, for $0.5 we have 10 nickels coins

=> 10 nickels = 10*5

=> 10 nickels = 50 cents

=> 10 nickel coins = $0.5

Together it makes $2.00

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3 years ago
400.0 ml of a gas are under pressure of 80.0 kpa what would the volume of the gas be at a pressure of 100.0 kpa
Ber [7]

Answer:

The final volume is 320 mL at pressure of 100 kPa.

Step-by-step explanation:

Boyle's law gives the relation between volume and pressure of a gas. It states that at constant temperature, volume is inversely proportional to its pressure such that,

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Let

V_1=40\ mL\\\\P_1=80\ kPa\\\\P_2=100\ kPa

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V_2=\dfrac{P_1V_1}{P_2}\\\\V_2=\dfrac{400\times 80\times 10^3}{100\times 10^3}\\\\V_2=320\ mL

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Read 2 more answers
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