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cestrela7 [59]
4 years ago
13

Some research suggests that first born children may have higher iq scores than their later born siblings. do first-born identica

l twins have higher iq scores than their second-born sibling? data from a 1998 study were analyzed to determine whether first-born identical twins have higher iq scores than their second-born siblings. ten pairs of adult identical twins were assessed and their full scale iq scores were calculated.
Mathematics
1 answer:
elixir [45]4 years ago
6 0
It dont make sense 
there is no way to tell the iq scores  
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Options are:<br><br> X=2, y=3<br><br> X=3, y=2<br><br> X= -2, y=3<br><br> X=4, y=8
trapecia [35]

Step-by-step explanation:

2x - 5 = y - 5

2x = y

x = y/2

y - 3 = x + 1

Substitute the value of x here,

y - 3 = \rm{\dfrac{y}{2} + 1}

y - 3 = \rm{\dfrac{y + 2}{2}}

2y - 6 = y + 2

y = 8

Now, x = 8/2

x = 4

So, go for D part, it is the correct answer.

Good Night/Day !

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Step-by-step explanation:

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3 years ago
so far, 18 of the 25 students in your class have turned in field trip permission slips . what percent of your classmates have tu
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3 years ago
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A number times five is greater than fifteen. A number less negative seven is less than or equal to five. The difference between a number and seven is less than zero. The sum of a number and seven is greater than or equal to fifteen.



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