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aliina [53]
3 years ago
8

Find xy if x + y=3, x^2 + y^2 = 5

Mathematics
1 answer:
Vesna [10]3 years ago
8 0

Answer:

mark me

Step-by-step explanation:

x+y=3

x=3-y

putting the value of x

in this

x²+y²=5

(3-y) ²+y²=5

9-6y+y²+y²=5

2y²-6y+9-5=0

2y²-6y+4=0

2y²-4y-2y+4=0

2y(y-2)-2(y-2)=0

(2y-2) (y-2) =0

2y-2=0 or y-2=0

y=1 or y=2

so x=2 or 1

so x×y=2×1 or 1×2=2

I HOPE THIS WILL HELP YOU MARK ME BRAINLIEST

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Find the distance between the two points rounding to the nearest tenth (if necessary) (-1,-2) and (5,2)
Ivan

Answer:

Distance between the two points

AB = √52 = 7.2111

Step-by-step explanation:

<u><em>Explanation:-</em></u>

Given points are (-1,-2) and (5,2)

Distance formula

                 = \sqrt{(x_{2}-x_{1}  )^{2} +(y_{2} -y_{1})^{2}  }

                = \sqrt{(5-(-1) )^{2} +(2 -(-2))^{2}  }

               = \sqrt{(6 )^{2} +(4)^{2}  }

              =   √36+16

             =√52

            = 7.2111

<u><em>Final answer:-</em></u>

Distance between the two points

AB = √52 = 7.2111

7 0
3 years ago
A bottle rocket is launched straight up. Its height in feet (y) above theground x seconds after launch is modeled by the quadrat
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We are asked when the rocket will strike the ground, so that is the same that sayin when will the rocket's height will be zero again, that is, y=0. so we have to solve

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So, the rocket will strike the ground after 7.3 seconds

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Step-by-step explanation:

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