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dangina [55]
3 years ago
11

Find the indicated sum.

Mathematics
1 answer:
aleksandr82 [10.1K]3 years ago
8 0

Answer:

-5

Step-by-step explanation:

The starting point is at 1 and the stopping is at 5(if you want to know where to find these, look at the image attached).

For i=1, we have i-4, which would be 1 - 4, or -3.

For i=2, we have i-4, which would be 2 - 4, or -2.

For i=3, we have i-4, which would be 3 - 4, or -1.

For i=4, we have i-4, which would be 4 - 4, or 0.

For i=5, we have i-4, which would be 5 - 4, or 1.

We would add these 5 values:

-3 + (-2) + (-1) + 0 + 1

This gives us -5

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Find two numbers if their sum is 7.2 and their difference is 2.7
Klio2033 [76]

Answer:

4.95 and 2.25

Step-by-step explanation:

x+y=7.2

x-y=2.7

Add equations

x+y + x-y= (2x-y+y)=2x

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8 0
3 years ago
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3 0
3 years ago
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DaniilM [7]

Answer:

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