In this problem, it will be helpful to know the vertex form of a parabola, which is listed below:
is a constant which helps to determine whether the parabola opens up or down. If 
, then the parabola opens downward and if 
, the parabola opens upwards
is the vertex of the parabola
By looking at the graph, we can first see that the graph opens downwards, meaning that . Thus, choices C and D are not valid. Now, let's use the vertex of the parabola to complete the equation.
The vertex of this parabola is (-1, 3), as shown by the graph. When we substitute this into our formula, we get:
The answer is a, 
.
Answer:
69
Step-by-step explanation:
90-69+420=666
hope i could help you
dogs are cool
Answer:
The answer is 44.84. I dont actually see the correct answer here.
Step-by-step explanation:
The formula for the surface area of a square pyramid is a√(a2 + 4h2). In your pyramid a=4, and h=3. This gives 44.84 as the answer.
Answer:
The value of the test statistic is 2.8.
Step-by-step explanation:
The test statistic is:
In which X is the sample mean, 
is the value expected value for the population mean, 
is the standard deviation and n is the size of the sample.
Sales at a fast-food restaurant average $6,000 per day
This means that 
Sample of 49
This means that 
The sample showed average daily sales of $6,400.
This means that 
Population standard deviation is about $1,000.
This means that 
The value of the test statistic is
The value of the test statistic is 2.8.
Answer:
<1 <2 and <1 <4
Step-by-step explanation:
A supplementary angle is a straight line with 180 degrees.
