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Marta_Voda [28]
2 years ago
8

A person has a bag containing quarters and dimes. There are a total of 61 coins in the bag, and the total value of the coins is

$10.45.
Mathematics
1 answer:
77julia77 [94]2 years ago
6 0

Answer:

Q+D = 65, multiply both sides by 2525Q + 25D = 162525Q + 10D = 950  subtract to get            15D = 675               D = 675/15 = 135/3 = 45 dimes               Q = 65-45 = 20 quarters25(20) + 10(45) = 500+450 = 950

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In circle D with m \angle CDE= 122m∠CDE=122 and CD=6CD=6 units, find the length of arc CE. Round to the nearest hundredth.
antoniya [11.8K]

Answer:

12.78 units

Step-by-step explanation:

The formula for arc length =

2πr × θ/360

From the question:

θ = 122°

r = 6 units

Therefore, the arc length =

2 × π × 6 × (122/360)

= 12.775810125 units

Approximately to the nearest hundredth = 12.78 units

Therefore, the length of arc CE is 12.78 units

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3 years ago
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4 years ago
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Oliga [24]

Answer:

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Step-by-step explanation:

5 0
3 years ago
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A. -12 5<br> b. -12 -<br> c. 12. (-4)<br> d.-12. (-5)
Roman55 [17]

Step-by-step explanation:

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4 0
3 years ago
If a car travels 23 miles on 1.0 gal of gas, how many liters of gasoline are needed for a 135 mile trip?
cluponka [151]
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3 years ago
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