Answer:
Variable or Symbol
Step-by-step explanation:
Answer:
x ≈ 4.1 cm
Step-by-step explanation:
The segment from the centre to the chord is a perpendicular bisector
The third side of the triangle = 14.6 ÷ 2 = 7.8
We now have a right triangle with legs x and 7.8 with hypotenuse 8.8
Using Pythagoras' identity on the right triangle.
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is
x² + 7.8² = 8.8²
x² + 60.84 = 77.44 ( subtract 60.84 from both sides )
x² = 16.6 ( take the square root of both sides )
x = 
≈ 4.1 ( nearest tenth )
Hope this helps. If you have any further question ask in comments.
Answer: A. (8.4,12.6)
Step-by-step explanation:
Confidence interval
is given by :-
, where n is the sample size
= Population standard deviation.
= Sample mean
= Two tailed z-value for significance level of 
.
Given : Confidence level = 99% = 0.99
Significance level = 
By standard normal z-value table ,
Two tailed z-value for Significance level of 0.01 :
Also,
n=100
Then, the required 99% confidence interval for the average number of chips per cookie :-
Hence, the 99% confidence interval for the average number of chips per cookie = (8.4,12.6)
Let's say you know the measure of angle 10. Let's make it 120 degrees.
Since it looks like you're going through a traversals unit (or something that includes traversals), you know that angle 10 and angle 8 are the same, which means they are both 120 degrees.
Now, since a line is 180 degrees on one side, you have to subtract 180-120 to find angle 7, which is 60.
Using the exterior-interior rule (I don't know the name), you know that angle 7 is equal to angle 1, which gets you 60.
Angle 1: 60 degrees.
You can do the same thing with another angle to find 12, or continue with this scenario with angle 10 being 120 degrees.
Edit: If you want to continue with this scenario, you can use the two interior angle rule, where angle 9 is equal to angle 1, and angle 12 is equal to angle 5. This also means angle 13 is equal to angle 8. But, since angle 13 is also 120 degrees, and there are 180 degrees in a line, that means angle 12 is also 60 degrees.
Angle 12: 60 degrees.
