1. solve for x and y
2x-y=1
2x+2y=10

(2, 3 )

Step-by-step explanation:

Given the 2 equations

2x - y = 1 → (1)

2x + 2y = 10 → (2)

Subtract (2) from (1) term by term to eliminate x

2x - 2x - y - 2y = 1 - 10, that is

- 3y = - 9 ( divide both sides by - 3 )

y = 3

Substitute y = 3 into either (1) or (2) for corresponding value of x

Substituting in (2)

2x + 2(3) = 10

2x + 6 = 10 ( subtract 6 from both sides )

2x = 4 ( divide both sides by 2 )

x = 2

Solution is (2, 3 )

it's d.

step-by-step explanation:

because: -1(4x + 1y) +2 (1x-3y) distribute each number into the parenthesis.

then you would get: -4x - 1y + 2x -6y combine like terms

and get: 2x -7y

hope my answer has you if not then i'm sorry.

intensity of the vector is v= √37 ≈ 6.08 units and make angle ∡α ≈ 9.46° with east direction

step-by-step explanation:

required vector is consists of the two componentsvx= 2+4=6 units   and vy= 1 unit and vx ⊥ vywe will use pythagorian theorem to find intensity of the vector vv∧2 = vx∧2 + vy∧2 => v = √vx∧2 + vy∧2 = √6∧2 + 1∧2 = √36+1 = √37 ≈ 6.08 unitsthe angle ∡α between vector and east direction we wil find with tanαtanα = 1/6 => α = arc tanα = arc 1/6 => α ≈ 9.46°

hope this