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Scrat [10]
3 years ago
9

1. A man has 5 grandchildren, 4 girls and 1 boy. He thinks this is unusual. If the probability that any child born

Mathematics
1 answer:
ivanzaharov [21]3 years ago
7 0

Answer:

6.25%

Step-by-step explanation:

To know the final probability that this has happened, we must multiply the probability of each event, they tell us that the probability that it is a girl is 1/2 and this happened 4 times, therefore:

(1/2) ^ 4 = 0.0625

that is, the probability that 4 girls are born is 6.25%

an unusual probability is considered when it is less than 5%, therefore, although it approaches this figure, it is not unusual

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A tall glass can hold 750 cm3 of water. A bottle can hold twice as much water as the glass. A jug can hold four times as much wa
AURORKA [14]


From the information we have the capacity of the glass is 750

The capacity of the bottle will be:

2 * 750 = 1500

The jug will hold four times more than the bottle so it will hold:

1500 * 4 = 6000

Three bottles will hold :

3 * 1500 = 4,500

Four  jugs will hold:

4 * 6000 = 24,000

To find out the total capacities of the three bottles and four jugs we add:

4,500 + 24,000 = 28,500

Therefore the total capacity of 3 bottles and 4 jugs is 28,500 cm3

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3 years ago
what is the length of a chord at a distance for 4 cm away from the centre of a circle of radius 5 cm​
gavmur [86]

See attachment for math work.

We must reject x = -3 because distance is positive.

The value of x is 3.

Chord = 2x

Chord = 2(3)

Chord = 6 cm

7 0
3 years ago
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Lera25 [3.4K]

Answer:

1 x 0.28 works, along with 5 x 0.056.


5 0
4 years ago
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A submarine travels through the water at an elevation of - 203 meters (it travels below the surface). The sub starts to rise. Th
rjkz [21]
Well see here that it practically gives us the answer. The submarine rises 4.3 meter each minute of the first 15 minutes. Multiplying these two given numbers you get 64.5  . Great we're halfway through. Now onto the second equation. 5.2 times 12 . easy right? The answer round to 62.4 . Now all that's left to do is add the two together. After the 27 minutes the submarine should be at an elevation of 126.9 feet. rounding to 127 if you teacher requires you to round the numbers. 
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3 years ago
Please helpppppp
melomori [17]

Given Information:

Years = t = 35

Semi-annual deposits = P = $2,000

Compounding semi-annually  = n = 2

Interest rate = i = 6.5%  

Required Information

Accumulated amount  = A = ?

Answer:

Accumulated amount  = $515,827

Step-by-step explanation:

The future value of amount earned over period of 35 years and interest rate 6.5% with semi-annual deposits is given by

FV = PMT * ((1 + i/n)^nt - 1)/(i/n))

Where  

n = 2

i = 0.065

t = 35

FV = 2000*((1 + 0.065/2)^2*35 - 1)/(0.065/2))

FV = 2,000*(257.91)

FV ≈ $515,827

Therefore, Anthony will have an amount of $515,827 when he retires in 35 years.

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3 years ago
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