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frutty [35]
2 years ago
11

Identical twins happen once

Mathematics
2 answers:
Mamont248 [21]2 years ago
6 0

Answer:

I think at least 357

Correctme if im wtong

Arte-miy333 [17]2 years ago
5 0

Answer:

11

Step-by-step explanation:

if there are twins born every 250 births take your large number (2,750) and divide it by 250 to get your answer

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The function y = –16t2 + 224 models the height y in feet of a stone t seconds after it is dropped from the edge of a vertical cl
vodomira [7]
We are given with the free-fall function expressed as y = –16t2 + 224. To get the time of fall, equate y equal to zero as this means the stone has already reached the bottom. Doing this, t is equal to square root of 14 or equivalent to 3.74 seconds
8 0
3 years ago
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2<br>Decrease R420 in the ratio 4:7​
Oxana [17]

Step-by-step explanation:

Let the numbers are 4x and 7x. According to the question if each number is increased by 20, the ratio becomes 7 : 9.

Then,

( 4x + 20 ) : ( 7x + 20 ) = 7 : 9

9( 4x + 20 ) = 7( 7x + 20 )

9( 4x ) + 9( 20 ) = 7( 7x ) + 7( 20 )

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40 / 13 = x

Therefore, number are :–

4 x = 4( 40 / 13 ) = 160 / 13

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4 0
3 years ago
How many ways can eight letters be arranged into groups of five where order matters and the first two letters are already chosen
fenix001 [56]

Answer:

120

Step-by-step explanation:

Since we're dealing with a problem where the order matters and the first two letters are already chosen we need to subtract the number of letters and the number of available slots per group.

We use the permutation formula to find the answer, but before that let's check values.

n = 8

k = 5

Now since there are two letters already chosen we have to deduct two from both the value of n and k.

n = 6

k = 3

Now we can use the permutation formula:

_{n}P_{k}=\dfrac{n!}{(n-k)!}

_{6}P_{3}=\dfrac{6!}{6-3)!}

_{6}P_{3}=\dfrac{6!}{3!}

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The 3*2*1 cancels out and leaves us with:

_{6}P_{3}=6*5*4

_{6}P_{3}=120

So there are 120 possible ways to arrange eight letters into groups of five where order matters and the first two letters are already chosen.

6 0
3 years ago
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PLEASE HELP ME!!!! Please show work!!! ASAP!!
Ber [7]
The answer would be C. because you have to multiply all of the numbers and then divide by the 90 degree angle.

5 0
3 years ago
Kevin ran 6/7 miles and his brother james ran 10 miles. How many miles did the two of them ran.​
masya89 [10]

Answer:

16.7 miles

Step-by-step explanation:

6.7+10=16.7

The two of them ran 16.7 miles.

7 0
2 years ago
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