Answer:
Vertex is (-1, -9)
Step-by-step explanation:
To find the x-value of the vertex, we use the formula
x
=
−
b
2
a
(This is considered the axis of symmetry).
a
=
1
and
b
=
2
with
c
=
−
8
(These are the numbers in order)
By substituting we get
x
=
−
(
2
)
2
⋅
1
, which simplifies to
x
=
−
1
.
Once you find x, substitute back into the equation to find y.
y
=
(
−
1
)
2
+
2
(
−
1
)
−
8
y
=
1
−
2
−
8
y
=
−
9
Putting the two numbers together you get the coordinates
(
−
1
,
−
9
)
.
Answer:
Step-by-step explanation:
to answer question 2. you would need to simplify each fraction (A/B). On the table you made in question one the first fraction is 6/2 ll you need to do is simplify the fraction by 2.
Each of the 5 questions can be answered 4 ways. That is, there are 4×4×4×4×4 possible answer patterns.
There are 4^5 = 1024 possible ways to answer.
Answer:
Area = 110 cm²
Step-by-step explanation:
You can find the area of a regular pentagon by finding the area of one of the triangles created by its central angle and multiplying it by 5.
1. Use the formula for the area of a triangle to find the area of the triangle formed by its central angle.
2. Multiply this area by 5 to get the area of the entire pentagon.
A = 22(5)
A = 110
