Q: Pat has 3.80 in nickels and dimes. If there are 51 coins in all how many of them are nickels?

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let x be number of dimes let y be the number of quarters 10x+25y=380 x+y=20 now we need to manipulate so we can isolate for one variable. y=20-x now we sub into y 10x+25(20-x)=380 expand the expression 10x+500-25x=380 -15x=-120 x=8 therefore there are 8 dimes 8+y=20 y=12 therefore there are 12 quarters

.380

380

There are 3800 tenths in 380.

thirty-eight 380 / 10 = 38

There are many possible pairs of numbers. One such is 1 and -380.

380 miles is 611.5 kilometres

Answer: 380 km = 236.121 miles.

There are 38,000 centimeters in 380 meters.

380 kilometres = 236.12 miles.

380 L = 100,3854 gallons

380 grams = 13.4 ounces

Depends on WHICH .380. There is no one answer to your question.

380 feet = 115.82400 meters.

380 decimeters is 38 meters

380 kilograms is 837.8 pounds.

380 torr is 0.5 atm

380 pounds is 27.1 stone.

380 ÷ 4 = 95.

1 cm = 10 millimeter380 millimeter = 380/10 = 38 cm

380 grams = 0.837756596 pounds

380 [US]Cups = 54.42 Liters

380 Kilometers = 236.1 miles

380 mm = 1.2467 ft (rounded)

380 meters = 38,000 centimeters