Answer:
Step-by-step explanation:
Area of sector = angle/360 * pi * r^2
5.5pi = angle/360 * pi * 9
5.5 = angle/360 * 9
angle = (5.5 * 360)/9 = 40 * 5.5 = 220
Answer:
The second equation can be used
Step-by-step explanation:
Just plug in the values and the equation should look like this 8^2 + b^2 = 12^2
12 is the hypotenuse to plug that into c
and 8 is just a leg so you can either put it in a or b
Answer:
Part 1) 
Part 2) 
Step-by-step explanation:
Let
y ----> the total amount of savings
x ----> the number of months
we know that
The linear equation in slope intercept form is equal to

where
m is the slope or unit rate
b is the y-intercept or initial value
In this problem we have
<em>Herman</em>
The slope is equal to 
The y-intercept is 
substitute
----> equation A
<em>Jackie</em>
The slope is equal to 
The y-intercept is 
substitute
----> equation B
Part 1) In how many months will they have the same amount of savings?
equate equation A and equation B

solve for x



Part 2) How much will each of them have saved?
substitute the value of x=10 months in any of the equations
equation A

equation B

Answer:
an angle less than 90 degrees
Step-by-step explanation:
so like this angle /_
this is obtuse \_
this is right |_
<h3>
Answer: B) 1 & 3</h3>
Explanation:
Vertical angles form when we have an X shape like this. They are opposite one another and always congruent. Angles 2 and 4 is the other set of vertical angles.