Bạn thỷ bốc ngẫu nhiên 1 bi từ hộp i có 6 bi đỏ ,7 xanh,8 vàng , 9 trắng .Bán lợi bốc ngẫu nhiên 1 bi từ hộp 2 có 4 đỏ 3 xanh 2 vàng 1 trắng .Biết rằng bốc ra 2 bi cùng màu, tính xác suất để đó là 2 bi đỏ

The length of a shadow of the building is 36m. the length of the pole, which is perpendicular to the ground, is 1.9m. the length of the pole's shadow is 1.52m. what is the height of the building?

26) -2(7x) = (-2 • 7) x a. associative property of addition b. associative property of multiplication c. commutative property of multiplication d. commutative property of addition

The school track has eight lanes. each lane is 1.25 meters wide. the arc at each end of the track is 180. the distance of the home straight and the radii for the arcs in the 1st 4 lanes are given. s=85m r1=36.5m r2=37.75m r3=39m r4=40.25m part one: find the radii of lanes 5 through 8 of the track. show your work. part two: if max ran around lane one, how far did he run? show your work and explain your solution. part three: max wants to run a total of three laps around the track, choose two additional lanes (2-8) for him to run and find the distance around those two lanes. show your work and round to the hundredths. part 4: based on your lane choices in part three, what was the total distance max ran in the three laps around the track?