Answer:
Final answer is c. 15
Step-by-step explanation:
We need to find about what is the first term in the sequence for which d = -2 and a7 = 3
We will use nth term formula of arithmetic sequence.

we have been given a7 that means 7th term is 3
so plug n=7, d=-2 and a_n=3 into above formula 




Hence final answer is c. 15
 
        
                    
             
        
        
        
Answer:
589 is da answer
Step-by-step explanation:
25+6(94)=?
 
        
             
        
        
        
It would be $39.95 for the Fast movers (bc they have unlimited mileage) and $38.70 for Speedy movers (including the extra miles added after 75) Please let me know if this helped, thanks.
        
             
        
        
        
Answer:

Step-by-step explanation:
Given
x   -----   y
0.5. --- 0.8
1. --- 1.6
3.--- 4.8
25. --- 40
Required
Determine the constant of proportionality
This can be calculated using the following formula:
 ; Where r is the constant of proportionality;
 ; Where r is the constant of proportionality;
Solve for r

When x = 0.5; y = 0.8


When x =  1; y =1.6


When x =  3; y = 4.8


When x =  25; y = 40


Notice that the value of r is constant throughout;
Hence:

 
        
             
        
        
        
Answer:
yes, if AB ≅ DE
Step-by-step explanation:
Triangles are said to be congruent if they have the same sides and the same angles. 
The following measures are used to determine if triangles are congruent:
1) Angle-side-angle: If two angles and a side of a triangle is equal to two angles and corresponding side of another triangle, then they are congruent.
2) Side-side-side: If all three sides of a triangle is equal to three sides of another triangle, then the two triangles are congruent.
3) Side angle side: If two sides and an included angle of a triangle is equal to the two sides and corresponding angle of another triangle, then they are congruent.
4) Hypotenuse - leg: If the hypotenuse and one leg of a triangle is equal to the hypotenuse and leg of another triangle then they are congruent.
From the triangles  DEF and ABC, already, they already have one equal triangle that is ∠F = ∠B and an equal side i.e DF = AC.
To satisfy congruence, two sides and an angle have to be equal, therefore if AB = DE then the two triangles would be congruent