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Aleks [24]
3 years ago
12

8x - 1 - 9x I don’t understand

Mathematics
1 answer:
Ivan3 years ago
5 0
-x-1
all you do is subtract 9x from 8x.

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Evaluate the expression. 4! • 3! <br> 12 <br> 30 <br> 144 <br> 5,040
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Sum of two numbers is 24 and the difference is 15.What are the two numbers ?
Alexeev081 [22]
Let,
the bigger number  be "x"
the smaller number be "y"
Now, according to the question,
x + y = 24...........equation (1).............because the sum of numbers is 24
x - y = 15 .............equation (2)..................because their difference is 15

Taking equation (2),
x - y = 15
x = 15 + y ....................equation (3)

Now, Taking equation (1)
x + y = 24
(Substituting the value of "x" form equation (3) we get)
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(Subtracting 15 on both sides, we get)
y + y = 24 - 15
2y = 9
y = 9 / 2
y = 4.5
Now, 
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x = 15 + y
(Substituting the value of y , we get)
x = 15 + 4.5
x = 19.5

So, the two numbers are 19.5 and 4.5

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3 years ago
In the image, point A is the center of the circle. Which two line segments must be equal in length?
alex41 [277]
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Here's my last question
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Answer:

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Step-by-step explanation:


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