52 people
276 people
924 people
1,148 people
924 people rode the rollercoaster.
The answer is option (C).
The percentage means the required value out of 100.
It is calculated by dividing the required value by the total value and multiplying by 100.
The percentagechange is also calculated using the same method.
In percentage change, we find the difference between the values given.
Example:
Required percentage value = a
total value = b
Percentage = a/b x 100
We have,
To find the number of people who rode the roller coaster,
We can multiply the total number of people at the park by the percentage who rode the roller coaster:
So,
The number of people who rode the roller coaster.
= 77% × 1,200
= 77/100 x 1200
= 924
Therefore,
924 people rode the rollercoaster.
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924
77% of 1200 is 924
Answer:
Vertex of given quadratic function is (-2,-36)
Step-by-step explanation:
Given function
We have to find the vertex of the given function .
The standard quadratic function is represented by ,
Where (h,k) represents the vertex and a ≠ 0.
If a is positive, the graph opens upward, and if a is negative, then it opens downward.
We first write the given equation in standard form ,by using completing square,
We know
First taking 5 common from function, we have,
Comparing we have, a = x and
-2ab= +4x ⇒ -2b = 4 ⇒ b = -2
Add and subtract b , we get,
On simplifying, we have,
We get,
On comapring with standard equtaion , we have h = -2 and k = -36
Thus, vertex of given quadratic function is (-2 ,-36)