Answer:
Acute
Step-by-step explanation:
it is not a right angle, that's 90
not obtuse, above 90
So acute less than 90
200+50+4=254 is the answer
Answer:
k = 4
Step-by-step explanation:
17 = 5k - 3
+3. +3
20/5 = 5k/5
4 = k
k = 4
Answer:
a
n
=
−
16
(
−
1
4
)
n
,
n
=
{
0
,
1
,
2
,
3
,
⋯
}
Step-by-step explanation:
We have the sequence
{
−
16
,
4
,
−
1
,
⋯
}
By looking at the first three terms of the sequence, we can already see a pattern.
Starting at -16, each term has its sign reversed, and is divided by 4.
Hence the sequence can be written as:
{
−
16
,
−
16
(
−
1
4
)
,
−
16
(
−
1
4
)
2
,
⋯
}
So the formula for the
n
th term of the sequence is
a
n
=
−
16
(
−
1
4
)
n
,
n
=
{
0
,
1
,
2
,
3
,
⋯
}
