Answer:
I can tell you that a positive line is increasing to the right and a negative to the left.
Answer:
0.1513
Step-by-step explanation:
mean= 15.4
SD=4.5
P(20<X<28)
P((20-15.4)/4.5 < Z < (28-15.4)/4.5)
P(1.022 < Z< 2.8 )
From Z distribution table,
P(Z<2.8)= 0.99744
P(Z<1.022)= 0.84614
P(1.022 < Z< 2.8 )= P(Z<2.8)- P(Z<1.022)
= 0.99744-0.84614
= 0.1513
Here, hope you can understand it lol
Answer: After 6 hour for the first question
Step-by-step explanation: Cause ∣x+
1−x
2
∣=
2
(2x
2
−1)\Leftright∣cos\alp+sin\alp∣=
2
(2cos
2
\alp−1)
∣
N
2
c
o
s
(
\alp
−
π
4
)
∣
=
N
2
c
o
s
(
2
\alp
)
\Right
\alp
∈
[
0
;
π
4
]
∪
[
3
π
4
;
π
]
∣N
2
cos(\alp−
4
π
)∣=N
2
cos(2\alp)\Right\alp∈[0;
4
π
]∪[
4
3π
;π]
1)
\alp
∈
[
0
;
π
4
]
\alp∈[0;
4
π
]
c
o
s
(
\alp
−
π
4
)
=
c
o
s
(
2
\alp
)
…
cos(\alp−
4
π
)=cos(2\alp)…
2.
\alp
∈
[
3
π
4
;
π
]
\alp∈[
4
3π
;π]
−
c
o
s
(
\alp
−
π
4
)
=
c
o
s
(
2
\alp
)
…
−cos(\alp−
4
π
)=cos(2\alp)…
Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 – 4 = 13 – 3 – 1 = 10 – 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 – 8 = 4); and creating equivalent but easier or ...
