The equation Y equals -4.9 X squared +9.8 X +2 models the trajectory of a ball thrown in air by a man, where Y= the distance The ball is from the ground in meters and X= the elapsed time in seconds. What is the greatest distance the ball is from ground?

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°

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a variable is any characteristics, number, or quantity that can be measured or counted. a variable may also be called a data item. hope i !

∠cbe and ∠deb are same-side interior angles.

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