Suppose you have a 5x5 checkerboard with 25 squares. You put one penny on the first square, then 2 pennies on the next square then 2 pennies on the third square and so on until there are pennies on all the squares. How many pennies are on the 25th square?

I think the answer is 2.

Step-by-step explanation:

I couldn't determine the pattern since you placed 2 pennies on the other squares other than the first one.

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