What is the answer to 7a + 21b + 42c?
2 answers:
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Answer:
Vertex form:
Standard form:
Step-by-step explanation:
A quadratic function in vertex form is where
is the vertex.
We are given .
Let's plug that in:
.
Now let's find .
We will use the -intercept
to find
.
So the function in vertex form is:
.
In standard form, we will have to multiply and combine any like terms.
Let's do that:
Answer:
Check below
Step-by-step explanation:
1) Check the rectangle below with a line k, the axis of rotation in the center of the figure.
2) Since it has a perimeter of 32 units and it is to be rotated about the line, the solid to be created it is a cylinder. As you can see below.
3) Let's calculate its radius, based on the information given, i.e. the perimeter:
Since the line of rotation is the center, and the radius is half the line segment of the basis, then the radius is 5.
