Let 
Y=the food is yummy
O=overeat
E=exercise
Note:
∪ = or
->  if ... then
(Y∪O)->E
        
             
        
        
        
520 dollars for 4 train tickets and 3 bus tickets.
        
             
        
        
        
Answer:
The sum of all exterior angles of BEGC is equal to 360° ⇒ answer F only
Step-by-step explanation:
* Lets revise some facts about the quadrilateral
- Quadrilateral is a polygon of 4 sides
- The sum of measures of the interior angles of any quadrilateral is 360°
- The sum of measures of the exterior angles of any quadrilateral is 360°
* Lets solve the problem
- DEGC is a quadrilateral
∵ m∠BEG = (19x + 3)°
∵ m∠EGC = (m∠GCB + 4x)°
∵ The sum of the measures of its interior angles is 360°
∴ m∠BEG + m∠EGC + m∠GCB + m∠CBE = 360
∴ (19x + 3) + (m∠GCB + 4x) + m∠GCB + m∠CBE = 360 ⇒ add the like terms
∴ (19x + 4x) + (m∠GCB + m∠GCB) + m∠CBE + 3 = 360 ⇒ -3 from both sides
∴ 23x + 2m∠GCB + m∠CBE = 375
∵ The sum of measures of the exterior angles of any quadrilateral is 360°
∴ The statement in answer F is only true
 
        
             
        
        
        
Step 1. Simplify 

 to 

 Step 2.
Step 2. Simplify 

 to 

 Step 3
Step 3. Simplify 

 to 

 Step 4.
Step 4. Cancel 

 on both sides
 Step 5.
Step 5. Multiply both sides by 

 (the LCM of 

)
 Step 6
Step 6. Expand
 Step 7.
Step 7. Subtract 

 from both sides
 Step 8
Step 8. Simplify 

 to 

 Step 9.
Step 9. Multiply both sides by 


Done! :) Hope this helps! :)
 
        
             
        
        
        
Answer:
4 stations
Step-by-step explanation:
If we need to be at least 98% certain that an enemy plane flying over will be detected by at least one station, we must ensure that there is at most a 2% chance that no radar stations detect the plane.
The probability that a single radar station does not detect the plane is 0.35.
For n radar stations:

Rounding up to the next whole station, at least 4 stations are needed.