Answer:
∠1=160° and ∠2=20°
Step-by-step explanation:
Let ∠1 = x
∠2 = y
as these two angles are supplementary their sum is 180
that x+y=180 ----(A)
Also given that ∠1 is 20 degree less than nine times the size of ∠2.
Hence
x=9y-20
putting value of x in A and solving for y
9y-20+y=180
10y=180+20
10y=200
y=10
Putting this y in A
x+10=180
x=160
I believe that the answer is B and D
Part A - 226.865 or 226.87
Part B - 120
Part C - 106.865
Answer:
No
Step-by-step explanation:
They are not real un my opinion
1.5 minutes = 90 second
The probability density function is

so the probability of interest is

