Answer:

Step-by-step explanation:


y-value is 0 and the x value is 5
h = 2
k = -1

Solve for
(the coefficient of the squared term).




The coefficient of the squared term in the parabola equation is 1/9.
-2x = -1
x = 1/2
Any equation that returns x=1/2 is a solution to this problem. For example, x= (3•4)/6 can be simplified so that x=1/2
Answer:
SAS theorem
Step-by-step explanation:
If
and m∠ECD = m∠BCA, then the triangles are similar by the SAS theorem.

So,
and m∠ECD = m∠BCA because vertical angles are congruent
Therefore ΔECD is similar to ΔBCA by SAS theorem
Step-by-step explanation:
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13. 81.64
14. 803.84
15. 153.83
16. 753.6
you just use circumference and area formulas for a circle