Answer:
491400
Step-by-step explanation:
Given : A club has 28 members.
To Find : . How many ways are there to choose four members of the club to serve on an executive committee?
Solution:
We are supposed to choose four members of the club out of 28.
So, we will use combination
Formula : 
n = 28
r = 4
Substitute the values :




Hence there are 491400 ways o choose four members of the club to serve on an executive committee
Answer:the answer is -43
Step-by-step explanation: it’s going down by five each time you have the first 3 already so subtract 5 6 more times
The word percent means something out of 100
Answer:
c
Step-by-step explanation:
because it makes the most sense
Answer:
x = 25°
Step-by-step explanation:
Applying,
Sum of the angle in the triangle = 180°
From the diagram,
First angle of the triangle = 55° (vertically opposite angles are equal)
Second angle of the traingle = 180-80 = 100° (sum of the angle in a straight line)
Third angle of the triangle = x
Therefore,
x+55+100 = 180
x+155 = 180
x = 180-155
x = 25°