4.05 in a mixed number is 4 1/2
Subtract 8/10 from 4/10 but just the numerator (the top number) and you will get 4/10
Answer:
B
Step-by-step explanation:
B is the only one that is actually a point on the graph
It’s A I’m pretty sure it’s right
Answer:α
=
71
°
:
explain:
From trigonometry we have:
cos
α
=
7
21
7
=
21
cos
(
α
)
and:
α
=
a
r
c
cos
(
7
21
)
=
70.5
≈
71
∘
