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3 years ago

Solve using elimination x+y=7 x-y=-3

Mathematics

2 answers:

yulyashka [42]3 years ago

5 0

Answer:

I think it's 4

Step-by-step explanation:

if x+y is 7 and x-y is 3 then the answer is 4

oksian1 [2.3K]3 years ago

5 0

Answer:

X=2, y=5

Step-by-step explanation:

X+y=7

x-Y=-3

————-

2x+ 0 =4

2x=4

x=2

solve for y using either equation

x+y=7

2+y=7

y=5

check answers by substituting x and y value in either equation:

x+y=7

2+5=7

7=7

x-y=-3

2-5=-3

-3=-3

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3 years ago

PLEASE HELP WILL MARK BRAINLIEST NO FAKE ANSWERS OR WILL BE REPORTED

GarryVolchara [31]

Answer:

height is 15

Y = L = Length

therefore 15y = (-x^2) +(300/20)

Step-by-step explanation:

15 = -x^2 +(300/20)

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15 = (300/20) - (x^2)

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3 years ago

Can someone help me its urgent:( ??

wariber [46]

Answer:

see the procedure

Step-by-step explanation:

Identify

Let

x ---> the cost of the Xbox one at Walmart

Strategy

we know that

The cost of the Xbox one at Walmart multiplied by 2 plus $50 must be equal to $450

Set up

The algebraic expression that represent this situation is

$450=2x+50$

Solve

solve for x

$450=2x+50$

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Check

substitute the value of x in the equation

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3 years ago

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professor190 [17]

Answer:

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Step-by-step explanation:

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