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pentagon [3]
3 years ago
5

Challenge A bag contains pennies, nickels, dimes, and quarters. There are 50 coins in all. Of the

Mathematics
1 answer:
bagirrra123 [75]3 years ago
5 0

Answer:

$6.35

Step-by-step explanation:

Number of pennies = 10% of the 50 coins = .10(50) = 5

Number of dimes = 34% of the 50 coins = .34(50) = 17

Number of nickels = 7 + no. of pennies = 7 + 5 = 12

Number of quarters = 50 - 5 - 17 - 12 = 16

Each penny is 1 cent, each nickel is 5 cents, each dime is 10 cents, and each quarter is 25 cents.

Amount of money in the bag = 5(1) + 17(10) + 12(5) + 16(25) = 5 + 170 + 60 + 400 = 635 cents = $6.35

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mezya [45]

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3 years ago
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Suppose the speeds of vehicles traveling on a highway are normally distributed and have a known population standard deviation of
erik [133]

Answer:

2.88

Step-by-step explanation:

Data provided in the question

\sigma = Population standard deviation = 7 miles per hour

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Sample mean = \bar X = 64 miles per hour

98% confidence level

Now based on the above information, the alpha is

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= 1 - 0.98

= 0.02

For \alpha_1_2 = 0.01

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3 years ago
A rectangle is 36 inches x 48 inches.<br><br> what is the perimeter.?<br><br> what is its area.?
olga nikolaevna [1]
For area, just multiply the length x width
So therefore, multiply 36 inches x 48 inches and there you have it.

Now for the perimeter, it is a little different
You'd have to add the sides up together to get your answer for the perimeter.
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2 years ago
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Using the rules of multiplying and dividing integers, identify when an answer will be negative. (Select all that apply) Question
enot [183]

Answer:

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positive ÷ negative = negative

negative ÷ positive = negative

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Step-by-step explanation:

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2. positive ÷ negative = negative

+ ÷ - = -

3. positive ÷ positive = positive

+ ÷ + = +

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- × - = +

5. negative ÷ positive = negative

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6. positive x positive = positive

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7. negative ÷ negative = positive

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positive ÷ negative = negative

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When the signs are the same, they will give positive

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3 years ago
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timofeeve [1]

Answer:

b=3

Step-by-step explanation:

yes

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2 years ago
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