1. true
2. false
3. true
4. false 
5. true
        
             
        
        
        
Answer:
(–19, 55)
Step-by-step explanation:
y = –3x – 2   equation 1
5x + 2y = 15 equation 2
using equation 1 in equation 2 we have:
5x + 2(–3x – 2) = 15 
5x –6x – 4 = 15 
-x = 15+4
x=-19
using equation 1:
y = -3(-19)- 2  
y= 57-2
y= 55
 
        
             
        
        
        
Answer:
22-6
Step-by-step explanation:
there isnt a variable so the answer is 16
 
        
                    
             
        
        
        
Answer:
I believe that it is D
Step-by-step explanation:
A is wrong...
B is wrong (I believe)...
C is wrong...
So D is the only answer choice left.
 
        
                    
             
        
        
        
Answer:
a.) 70*
b.) 60*
Step-by-step explanation:
a.) An isosceles triangle has two angles that are equal. The one other angle is 40*, meaning you have to subtract that from 180 and then divide by 2.
b.) An equilateral triangle has three equal angles. Divide 180 by 3.