» What is the value of s? S
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Answer:
The circumference of the cake board is <u>35π cm</u>.
Step-by-step explanation:
The question is incomplete, so the complete question is below:
A round cake has a diameter of 30 cm. Angela places the cake on a circular cake board with a diameter 5 cm longer than that of the cake. What is the circumference of the cake board? Give your answer in terms of π.
Now, to find the circumference of the cake board.
As, given diameter of cake = 30 cm.
And diameter of cake board is 5 cm longer than that of the cake.
Thus, the diameter of cake board is:
So, to find the circumference we need radius, by putting formula:
Now, to get the circumference of the cake board we put formula:
Therefore, the circumference of the cake board is 35π cm.
Answer:
Step-by-step explanation:
Vertex form of a quadratic equation;
Vertex of the parabolas (h, k)
The vertex of the parabola is either the minimum or maximum of the parabola. The axis of symmetry goes through the x-coordinate of the vertex, hence h = -3. The minimum of the parabola is the y-coordinate of the vertex, so k= 7. Now substitute it into the formula;
Now substitute in the given point; ( -1, 9) and solve for a;
Hence the equation in vertex form is;
In standard form it is;