Answer:
1 - p(7 girls) = 1 - 0.483^7 = 0.9939
Answer: The central angle of the arc is 162 degrees.
Step-by-step explanation: The information available are as follows;
Circumference of the circle equals 10. Length of an arc equals 9/2. The circumference of a circle is given as;
Circumference = 2Pi x r
That means 2Pi x r = 10.
Also the length of an arc along the same circle is 9/2. Length of an arc is calculated as;
Length of arc = (X/360) x 2Pi x r
Where X is the central angle of the arc
That means;
9/2 = (X/360) x 2Pi x r
We can now substitute for the known values as follows
Length of an arc = (X/360) x 2Pi x r
9/2 = (X/360) x 10
9/2 = 10X/360
By cross multiplication we now have
(9 x 360)/(2 x 10) = X
3240/20 = X
162 = X
The angle at the center of the arc is 162 degrees.
Answer:
17.2a+14.6
Step-by-step explanation:
Area= 1/2bh so 6•6 for the face of the triangle
Answer: 327.60 dollars
Explanation:
There are about 52 weeks in a year (note that 365/7 = 52.14)
So that means it costs a total of 52*6.30 = 327.60 dollars to run the fridge for a full year.
