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cupoosta [38]
2 years ago
10

What is the solution 2x-y=-2 2x+4y=8

Mathematics
1 answer:
vampirchik [111]2 years ago
3 0

Answer:

The answer is

x is 0

y is 2

Step-by-step explanation:

2x-y=-2

-2x-4y=-8

 -5y=-10

y=2

2x-2=-2

2x=0

x=0

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Aleks [24]

Answer:

{8 cm, 15 cm, 17 cm}

Step-by-step explanation:

we know that

The length sides of a right triangle must satisfy the Pythagoras Theorem

so

c^2=a^2+b^2

where

c is the greater side (the hypotenuse)

a and b are the legs (perpendicular sides)

<u><em>Verify each case</em></u>

case 1) we have

{5 cm, 15 cm, 18 cm}

substitute in the formula

18^2=5^2+15^2

324=250 ----> is not true

therefore

Sean cannot make a right triangle with this set of lengths

case 2) we have

{6 cm, 12 cm, 16 cm}

substitute in the formula

16^2=8^2+12^2

256=208 ----> is not true

therefore

Sean cannot make a right triangle with this set of lengths

case 3) we have

{5 cm, 13 cm, 15 cm}

substitute in the formula

15^2=5^2+13^2

225=194 ----> is not true

therefore

Sean cannot make a right triangle with this set of lengths

case 4) we have

{8 cm, 15 cm, 17 cm}

substitute in the formula

17^2=8^2+15^2

289=289 ----> is true

therefore

Sean can make a right triangle with this set of lengths

6 0
3 years ago
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makkiz [27]

Answer:

Lateral : 21

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Step-by-step explanation:

I think that this is correct. :)

6 0
2 years ago
A salesman earning $9.50 per hour receives a 12% raise. To find the new wage, multiply $9.50 by 0.12 and add the result to $9.50
avanturin [10]

I believe you would be correct. :)


5 0
3 years ago
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Karolina [17]

Answer:

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Step-by-step explanation:

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8 0
2 years ago
Your Overall grade is calculated by adding 35% of your Minor grade to 65% *
max2010maxim [7]

Answer:

69%

Step-by-step explanation:

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4 0
2 years ago
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