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GREYUIT [131]
3 years ago
5

Pls help with year 8 maths

Mathematics
2 answers:
const2013 [10]3 years ago
8 0

Answer:

see explanation

Step-by-step explanation:

Given a point (x, y ) then its distance from the origin is

d = \sqrt{x^2+y^2}

(a) (2, 3 ) , then

d = \sqrt{2^2+3^2}

   = \sqrt{4 + 9}

   = \sqrt{13} ≈ 3.6 units ( to 1 dec. place )

------------------------------------------------

(b) ( - 5, 7 ) , then

d = \sqrt{(-5)^2+7^2}

   = \sqrt{25+49}

    = \sqrt{74} ≈ 8.6 units ( to 1 dec. place )

-------------------------------------------------

(c) (- 1, 4 )

d = \sqrt{(-1)^2+4^2}

   = \sqrt{1+16}

    = \sqrt{17} ≈ 4.1 units ( to 1 dec. place )

------------------------------------------------------

(d) (- 4, - 5 ) , then

d = \sqrt{(-4)^2+(-5)^2}

   = \sqrt{16+25}

   = \sqrt{41} ≈ 6.4 units ( to 1 dec. place )

agasfer [191]3 years ago
3 0

Answer:

a) 1

b)11

c)4

d)1

I hope it helps you...

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