What is the circumference of a circle with a radius of 4.4 centimeters? Enter your answer as a decimal in the box. Use 3.14 for
2 answers:
Answer:
Hence, the circumference of the circle is:
27.6 cm
Step-by-step explanation:;
We are given Radius (r) of a circle as:
r=4.4 centimeters.
We are asked to find the circumference(C) of this circle.
We know that a circumference of a circle is defined as:
We put the value of r in the formula to obtain the circumference.
Hence, the circumference of the circle to the nearest tenth is:
27.6 cm.
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To find the zeros of this function, we must first set the entire function equal to 0
f(x) = x² - 2x - 15 = 0
Since this is a quadratic function, we must use the quadratic formula, which is:
Let's assign a, b, and c using our first function
x² means a = 1 (because it could be written as 1x²)
-2x means b = -2
-15 means c = -15
Now let's plug those in:
which simplifies to:
Simplified further:
And divide it by the 2 on the bottom gives us:
2+4 = 6
2-4 = -2
So the zeros of this function are -2 and 6
f(x) = x² - 2x - 15 = 0
Since this is a quadratic function, we must use the quadratic formula, which is:
Let's assign a, b, and c using our first function
x² means a = 1 (because it could be written as 1x²)
-2x means b = -2
-15 means c = -15
Now let's plug those in:
which simplifies to:
Simplified further:
And divide it by the 2 on the bottom gives us:
2+4 = 6
2-4 = -2
So the zeros of this function are -2 and 6
Answer: ($3.532, $4.166)
Step-by-step explanation:
Given : Significance level :
Critical value :
Sample size : n= 157
Sample mean :
Standard deviation :
The confidence interval for population mean is given by :_
Hence, the 0% confidence interval for the average tip given at this restaurant = ($3.532, $4.166)