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FrozenT [24]
4 years ago
10

There are 10 birds sitting on a wire. One-tenth of the birds are black. How many black birds are sitting on the wire?

Mathematics
2 answers:
Reil [10]4 years ago
7 0
One black bird is on the wire it's one tenth
Lostsunrise [7]4 years ago
6 0
Sense there are 10 birds and it is 1/10 i believe it would be one. Don't just go with my answer though. Wait for others to confirm. 

Best regards, 
6025loveteal
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If a number n has exactly 7 divisors, how many divisors does n squared have?
Anna [14]
A number n=p_1^{a_1}\cdot p_2^{a_2}\cdot\ldots\cdot p_k^{a_k}, where p_k are distinct prime numbers, has (a_1+1)(a_2+1)\cdot\ldots\cdot(a_k+1) divisors.

We know that n has 7 divisors. 7 is a prime number, so among the numbers a_1+1,a_2+1,\ldots,a_k+1 there is only one that is equal to 7.

So,
a_k+1=7\\
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That means n=p^6 where p is a prime number.
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4 0
3 years ago
A factory makes 300 sheets of construction paper per hour. How many sheets of construction paper will the factory make in 9 hour
Semmy [17]

Answer:

2700

Step-by-step explanation:

One hour is 300 sheets. We need to find 9 hours,

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7 0
3 years ago
PLEASE HELP QUICKLY : find the sum and difference of 5/6 and 1/2
choli [55]

Hello!

The sum of 5/6 and 1/2 is 1 1/2

5/6 > 3/4 so round it to 1.

1/4 ≤ 1/2 ≤ 3/4 so round it to 1/2.

Estimating:

1 + 1/2 = 1  1/2

The difference of 5/6 and 1/2 is 1/2

5/6 > 3/4 so round it to 1.

1/4 ≤ 1/2 ≤ 3/4 so round it to 1/2.

Estimating:

1 - 1/2 = 1/2

Hope this helps!

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8 0
4 years ago
A coin is loaded so that the probability of heads is 0.55 and the probability of tails is 0.45. suppose the coin is tossed twice
Vladimir79 [104]
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8 0
3 years ago
Am I correct on #4???
Oksanka [162]

Answer:

Yes

Step-by-step explanation:

True, you are correct.

7 0
4 years ago
Read 2 more answers
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