56 times!!
This is because the exponent indicates how many times you multiply a number. For example:
5^2= 5x5
Arc Length is 1/4th of the circumference .
<u>Step-by-step explanation:</u>
Here we need to find fraction of the circumference is this arc when An arc subtends a central angle measuring 
radians ! Let's find out :
We know that circumference of an arc subtending a central angle of x is :
⇒ 
⇒ 
⇒ 
⇒ 
⇒ 
⇒ 
Therefore , Arc Length is 1/4th of the circumference .
Answer:
5 classes.
Step-by-step explanation:
You can use the 
rule to determine the number of classes for a frequency distribution.
The rule says that 
where
is the number of classes
is the number of the data points
We know that the number of data points is = 20.
Next, we start searching for so that we can get a number 2 to the that is larger that the number of data points.
This suggests that you should use 5 classes.
Answer:
-2.1
Step-by-step explanation:
x= 4/5
you put in 4/5 where x is supposed to be so you get: -2/5 - 4/5 + (-9/10)
-2/5 - 4-5 = -6/5
-6/5= -12/10
-12/10 + -9/10= -21/10 = -2.1
The area of the circular shaped patio is: 172.7 ft²
<h3>What is the Area of a Circle?</h3>
Area of a circle = πr² [r is given as the radius of the circle].
The area of the patio = area of the larger circle - area of the smaller circle.
Radius of the larger circle = 8 cm
Radius of the smaller circle = 3 cm
π = 3.14
Area of smaller circle = πr² = (3.14)(3²)
Area of smaller circle = 28.26 cm²
Area of bigger circle = πr² = (3.14)(8²)
Area of bigger circle = 200.96 cm²
The area of the patio = 200.96 - 28.26
The area of the patio = 172.7 ft²
Learn more about area of rectangle on:
brainly.com/question/25292087
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