Answer:
See below.
Step-by-step explanation:
We know that 
                               tanA + tan B
tan (A + B)     =     ---------------------                       
                                1 - tanAtanB
Substituting for A + B
tan (A + B) = tan pi/4 = 1.
             tanA + tan B 
So        ------------------   =    1
              1 - tanAtanB 
Therefore   tanA + tan B =   1 - tanAtanB.
 
        
             
        
        
        
Answer:
Angle A is F Angle A = 57. 52+71=123. 180-123=57
 
        
             
        
        
        
Answer:
0.1% of tickets to ACME PUBLISHING SWEEPSTAKES win a car
Step-by-step explanation:
Given :The chance of winning a car is 1 in 1,000.
To Find : What percent of tickets to ACME PUBLISHING SWEEPSTAKES win a car?
Solution:
The chance of winning a car is 1 in 1,000.
The percent of tickets to ACME PUBLISHING SWEEPSTAKES win a car:
=
 =
 =
Hence 0.1% of tickets to ACME PUBLISHING SWEEPSTAKES win a car.
 
        
             
        
        
        
Turn fraction into a decimal.
-2 1/2 = -2.5
Remember that when you subtract a negative number it automatically changes it to adding a positive number.
-6 + 2.5 = -3.5
Hope This Helped! Good Luck!