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kobusy [5.1K]
3 years ago
7

Solve the second equation.2x - y = 8First, solve for (-y).--y =​

Mathematics
1 answer:
kicyunya [14]3 years ago
5 0

Answer:

-y=-2x+8\\y=2x-8

Step-by-step explanation:

To solve, first subtract 2x from both sides.

2x-y=8\\-y=-2x+8

You appear to want the solution for -y, so I've included it. Given that you also want the solution for y, divide both sides by -1.

-y=-2x+8\\y=2x-8

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7cm<br> 9cm<br> 4cm<br> 4cm<br> Find the area
sladkih [1.3K]

Step-by-step explanation:

lenght =4+4+7cm

=15cm

breadth=9cm

Now,

Area(A)=L×B

=15cm×9cm

=135cm^2

7 0
3 years ago
How to find quick answers for percentages
andrew11 [14]
Divide the number by 100 and multiply it by how many percent's there are
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igor_vitrenko [27]
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3 years ago
30 PTS!!!
Sphinxa [80]

Answer:

children = 177, adults =215

Step-by-step explanation:

im too lazy to write but solve this with a systeme

x(children),y(adults)

x+y=392

x=392-y

2.5y+1.25x=758.75

2.5y+1.25(392-y)=758.75

2.5y+490-1.25y=758.75

490+1.25y=758.75

1.25y=758.75-490

1.25y=268.75

y=268.75/1.25

y=215

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6 0
2 years ago
An item costs $390 before tax, and the sales tax is $35.10. Find the sales tax rate. Write your answer as a percentage.
DanielleElmas [232]

Answer:

Use this pencentage change formula:

New - Old

---------------- x 100

Old

Step-by-step explanation:

390 + 35.10 = 425.1 (New value)

So apply this to the formula:

425.1 - 390

--------------- x 100

390

<em>Which is = 9%</em>

<em>Hope</em><em> </em><em>it</em><em> </em><em>helps</em><em>.</em><em> </em><em>Cheers</em><em>!</em><em> </em><em>:</em><em>)</em>

7 0
3 years ago
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