Answer:
(
5
,
π
)
Step-by-step explanation:
−
5
=
r
cos
θ
88
[
1
]
0
=
r
sin
θ
8888
[
2
]
Squaring [1] and [2]:
25
=
r
2
cos
2
θ
0
=
r
2
sin
2
θ
Adding [1] and [2]:
25
=
r
2
cos
2
θ
+
r
2
sin
2
θ
Factor:
25
=
r
2
(
cos
2
θ
+
sin
2
θ
)
25
=
r
2
⇒
r
=
±
5
( use
r
=
5
)
Product of a number and four is 4x
<span>12 more than that is 12+4x </span>
<span>fewer than 60 </span>
<span>12 + 4x < 60</span>
The mean = sum of all the measurements / number of measurements (n)
= (5 + 3 + 3 + 8 + 8) / 5
= 27 / 5
= 5.4 Answer
The graph of 4|x| is shaped like a V where the vertex is at the origin ( because when x = 0 y=0) All y values are positive ( because of the absolute value |x| )
Refection in the x-axis will make all the y values change from positive to negative so the answer is y = -4|x|
g(x) = -4|x|
