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jarptica [38.1K]
3 years ago
14

Use the​ "at least​ once" rule to find the probabilities of the following events. Getting at least one tail when tossing nine fa

ir coins
The probability is ____
Mathematics
1 answer:
ozzi3 years ago
6 0
Theoretically its 1/2 or 50% but because theres no experimental tallys theres no way to say the experiment probability
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Convert 9255 cm3 to gallons. Express the volume in gallons to four significant figures.
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Nolan and his children went into a grocery store and he bought $8 worth of apples
goldfiish [28.3K]

Nolan and his children bought fruits (Apples and bananas) worth $8.

Cost of each apple and bananas are $2 and $0.40 respectively.

Let the number of bananas he bought = y

And the number of apples = x

Therefore, cost of the apples =$2x

And the cost of bananas = $0.40y

Total cost of 'x' apples and 'y' bananas = $(2x + 0.40y)

Equation representing the total cost of fruits will be,

(2x + 0.40y) = 8

10(2x + 0.40y) = 10(8)

20x + 4y = 80

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If he bought 5 times as many bananas as apples,

y = 5x ------(2)

Substitute the value of y from equation (2) to equation (1),

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x = 2

Substitute the value of 'x' in equation (2)

y = 5(2)

y = 10

Therefore, Nolan bought 2 apples and 10 bananas.

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