T Rectangle boards are placed around a playground that is the shape of a regular
nonagon. The angle between two consecutive boards is 40°.
AB
23
404
What is the measure of angle y?
A 50
B 180
C 140
D 40

i belive those are the ones that are under 90 degreese.

step-by-step explanation:

what are the statements? and what do you mean by "216 2 1 6"?

step-by-step explanation: given equation a = h(b 1+b 2)

also we are given values of a, h and b 1 as :

a = 16, h = 4, and b 1 = 3.

in order to solve it for b 2, we need to plug the given values of   a, h and b 1 .

therefore, plugging values of   a, h and b 1   in given equation, we get

16 = 4( 3 + b 2)

first dividing both sides by 4, we get

4 = 3 + b 2

subtracting 3 from both sides, we get

4 -3 = 3 -3 + b 2

1 = b 2.

the answer is d

for problems like this theres an app, its photomath that explains the problem and gives the answer hope i