Answer:
The pitch (slope) of the roof is 
or 
Step-by-step explanation:
we know that
The formula to calculate the slope is equal to
where
In this problem we have
-----> is the vertical distance (rises)
-----> is the horizontal distance (run)
substitute the values
convert to percentage form
Step one- distribute
6y-9=27
Step 2- subtract 9 on both sides
6y=18
Step 3 divide on both sides
Y=3
Answer:
It has one solution which is a=1
-22-x=5+6x+9
-6x-x=22+5+9
-7x=36
x=5.142
Answer:
Step-by-step explanation:
The first step is to determine the areas of the inner and the bigger circles.
The formula for determining the area of a circle is expressed as
Area = πr²
Where
r represents the radius of the circle.
π is a constant whose value is 3.14
Considering the inner circle,
diameter = 148.4 cm
Radius = 3 inches
Area = 3.14 × 3² = 28.26 inches²
Considering the bigger circle,
Radius = 7 inches
Area = 3.14 × 7² = 153.86 inches²
The area between the bigger and inner circles is
153.86 - 28.26 = 125.6 inches²
Probability = number of favourable outcome/number of total outcome.
the probability you land inside the bigger circle but outside smaller circle is
125.6/153.86 = 0.82
