Find the circumference and area of a circle with diameter 22 ft. Express your answer in terms of π.

Mathematics

1 answer:

Ray Of Light [21]3 years ago

4 0

Answer:

69.12ft

Step-by-step explanation:

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The total number of seats in an auditorium is modeled by f(x) = 2x2 – 6x, where x represents the number of rows. How many rows a

stealth61 [152]

Answer:

Jose's solution is not correct, the auditorium has $16$ rows

Step-by-step explanation:

we have

$f(x)=2x^{2} -6x$

where

f(x)------> is the total number of seats in the auditorium

x----> represents the number of rows

How many rows are there in the auditorium if it has a total of 416 seats?

Find the value of x for f(x)=416 seats

substitute the value of f(x) in the equation

$416=2x^{2} -6x$

$2x^{2} -6x-416=0$

Using a graphing calculator

The values of x are

$x=-13, x=16$

The solution is

x=16 rows because the number of rows can not be a negative number

7 0

3 years ago

What are the zeros of the quadratic function f(x) = 2x2 + 8x – 3?

julsineya [31]

The zeros of the function are also called the roots. Thus, this problem is basically locating the root of the given equation.

To locate the roots, we equate the equation f(x) to 0.

We then dissect each term to identify a, b, and c in the quadratic equation formula:

x = (- b +- √(b²-4ac))/2a

a = 2
b = 8
c = -3

x1 = 0.3452
x2 = -4.345

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3 years ago

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In recent years major league baseball games have averaged three hours in duration. However, because games in Denver tend to be h

lara31 [8.8K]

Answer:

We conclude that the games in Denver would be longer than major league baseball games.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 180 minutes

Sample mean, $\bar{x}$ = 185.54 minutes