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Triss [41]
3 years ago
8

5x – 3y = -21 2x - 9y = 54

Mathematics
1 answer:
elena55 [62]3 years ago
8 0

Answer:

I'm confused

Step-by-step explanation:

What am I suposed to do?

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The length of a rectangle picture frame is 2 centimeters more than twice it’s width. If the area of the frame is 364 square cent
sergeinik [125]

Answer:

Length:28 cm

Width: 13 cm

Step-by-step explanation:

Let

x ---> the length of a rectangle picture frame

y ---> the width of a rectangle picture frame

we know that

The area of a rectangle picture frame is equal to

A=xy

we have

A=364\ cm^2

so

364=xy ----> equation A

The length of a rectangle picture frame is 2 centimeters more than twice it’s width

so

x=2y+2 ---> equation B

Solve the system by graphing

Remember that the solution is the intersection point both graphs

The solution is the point (28,13)

see the attached figure

therefore

Length:28 cm

Width: 13 cm

5 0
3 years ago
6.) ? Need help with the steps
Law Incorporation [45]
Well you equal out the two angles to each other and solve for x. then you just plug the the number you got for x back into the equations to get your answers
3 0
4 years ago
if Donnie has 100 marbles and gives 25 away to Arthur and 35 to mike how many marbles does Donne have?
Marat540 [252]

Answer:


Step-by-step explanation:

100 MINUS 25 PLUS 35


5 0
3 years ago
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3(x - 4) + 9 = 18<br><br> Step by step (and explanation)
Andrews [41]

Answer:

= 7

Step-by-step explanation:

3(x−4)+9=18

3 − 1 2 + 9 = 1 8

 3 − 3 = 1 8

3  = 1 8+3

3  = 21

x= 21/3

x=7

3 0
3 years ago
Determine the value of each of the following expressions.<br><br> −|−13| = <br><br><br> |6| =
Wewaii [24]
The value of the first one is negative 13 the second 6
8 0
3 years ago
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