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kenny6666 [7]
3 years ago
15

Solve the following system of equations using addiction

Mathematics
1 answer:
puteri [66]3 years ago
6 0

Answer:

3x+y=13

+2x-y=12

SOlve it like what you would normally do

3x+2x=5x

y+(-y)=0

13+12=25

Basically

5x+0=25

Bring down all appropiate signs

Now solve that

5x=25

x=5

Now to find “y”

Plug in The “x”

3*5=15

15+y=13 now solve that and you’d get -2

If you plug it into the other one, it would be the same thing

2*5=10

10-y=12

-y=2

y= -2

x=5

y= -2

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A(-4, 2) and B(3, -2).

I will do number 2.

Let d(A, B) = distance between the two points.

d(A, B) = sqrt{(3 -(-4))^2 + (-2-2)^2}

d(A, B) = sqrt{(3 + 4))^2 + (-2-2)^2}

d(A, B) = sqrt{(7)^2 + (-4)^2}

d(A, B) = sqrt{49 + 16}

d(A, B) = sqrt{65}

Done!

8 0
4 years ago
LOTS OF POINTS! WILL GIVE BRAINIEST. <br> (no spam plz)<br> How would I answer these?
Fofino [41]
All you have to do is tell what u see about the three triangles and say what the same and different about them.
3 0
4 years ago
Read 2 more answers
How to solve the problem
Nady [450]
50 - [(6² - 24) + 9√25]
= 50 - [36 - 24 + 9*5]
= 50 - [12 + 45]
= 50 - 57
= -7
4 0
4 years ago
Which relation represents a function ?
yKpoI14uk [10]

Answer:

The third choice

Step-by-step explanation:

a relation is a function if an input has at most one output for a given input

Choices 1, 2 and 4 are not functions as they have two different outputs for the same input. (See the red ovals)

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