Help me please with this question thank uu

green buttons = 87 buttons

Step-by-step explanation:

pink : blue = 2 : 7

blue : green = 3 : 4

Here we see blue button being common. So equal it with others.

pink : blue = 2 : 7 (* 3)

pink : blue = 6 : 21 from theory 1

blue : green = 3 : 4 (*7)

blue : green = 21 : 28 from theory 2

Then the total ratio is

           pink : blue : green = 6 : 21 : 28

so total there are ( 6 + 21 + 28 ) = 55 units

55 units ---> 170

1 units ---> 170/55

1 units ---> 3.09

So the number of green button is ( 3.09 * 28 ) = 87 buttons.

86

Step-by-step explanation:

P+B+G < 170 known

P/B = 2/7          p = 2/7 B

B/G = 3/4         B = 3/4 G

P = 2/7 * 3/4 G = 3/14 G

P+B+G = (3/14 G) + (3/4 G) + G

           = 55/28 G

55/28 G < 170

G < 86.55

Greatest number of Green should be 86

2.2°  

step-by-step explanation:

let θ = the angle of elevation.

tanθ =77/2020

tanθ = 0.038 12

      θ = tan⁻¹0.038 12

      θ = 2.2°