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hoa [83]
4 years ago
9

X-5y=-49 and y=-2x+1

Mathematics
1 answer:
navik [9.2K]4 years ago
6 0

Answer:

X=-4 , Y=9

Step-by-step explanation:

X-5Y=-49

X-5(-2X+1)=-49

X+10X-5=-49

11X=-44

X=-4

Y=-2X+1

Y=-2(-4)+1

Y=9

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If you can do all three questions I’ll mark you brainlest!! Thanks <3
Verdich [7]

Answer:

1. Rate needed 9/6; Unit rate is 1.5/1; 1.5 cans of white paint are needed for each can of blue.

2. rate needed = 12/6; unit rate = 2/1;  Need 2 cups of water for every scoop of fruit mix.

3. 70 minutes

Step-by-step explanation:

1.  Set up a ratio

3white/2blue = xwhite/6blue

3/2 = x/6

cross multiply 2x = 18; x = 9

rate needed = 9/6

Unit rate is 1.5/1 (divide 3 by 2 or 9 by 6 to get unit rate_

2. 3/1.5 = x/6

1.5x = 18; x = 12

rate needed = 12/6

unit rate = 2/1

3. Set up a ratio.

3.5/.25 ( 1/4=.25)

3.5/.25 = x/5

.25x = 3.5(5)

.25x = 17.5

x = 70 minutes

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