Answer:
124
Step-by-step explanation:
we are given 146 right away.
That little square means a 90 degree angle
146 + 90 = 236
360 - 236 = 124
(360 degrees is the sum of a complete circle.)
n(A)+n(B)-49/400=n(AUB)
n(B)=1-7/20+49/400
n(B)=(400+49-140)/400
n(B)=309/400
B) (-∞,∞)
The domain is the x-values, so it’s all real numbers in this graph.
I would use interval notation and choose B) (-∞,∞)
The range is the y-values, so it’s (2,-1), if that’s the next question.
#a
And
#2
Attached
#3
