5times the sum of 12 and a number is 80
what is the value of the unknown number

4

Step-by-step explanation:

5(12+x)=80          Create equation. x is the unknown number.

60+5x=80           Distributive property.

5x=20                  Isolate variable.

x=4                       Divide on both sides by the coefficient.

w'x is 0.

hope it

statement #3: proof- ang is congruent to ang ecd : angles are congruent.  

step-by-step explanation:

1: the missing angles in statement #3  

a.) acb  

reason- the reason why the answer is acb is because angle ecd and angle acb are both the same size *that's what the word congruent means this is really simple.  

2: the missing word in reason #3  

c.) vertical  

reason- the reason why the answer is vertical is because the angles in that diagram on figure 2 is slanted, which is vertical, and the e and a both lay on vertical lines. along with the other's, but e and a are the 2 main points you want to focus on. and c is kind of like your starting point, because c is for both angles, not just one.  

i hope that was and understanding.