What is the missing reason in step 3?
GermZEDF = 120°: m ZADB = (3x)"; mZBDC = (2x)
Prove. x = 24
Reasons
(OU
Orven
120
ö
(3x)"
Statements
MZEOF=120
MZAOB - (3x)
rm BDC- (24)
EDF and ADC are vert 25
ZEOF ADC
4 ZADC - MLADB. mBOC
MZEDF - MZADC
MEDF - MADB - MBDC
120 - 3x-24
8 120 - 5x
94-24
(2x)
2 def of vert 25
37
4 add post
5 det of
6 substitution
substitution
8 addition
19 di prop of ea
vertical angles are congruent
substitution
definition of congruency
definition of equality
Save and Exit

- 1.613 = -1.6 or -1.61

-1.522 = -1.5 or -1.52

0.587 = 0.6 or 0.59

3.079 = 3.1 or 3.08

maybe showing the graph would

step-by-step explanation:

-387129 iq

the ratio of balloons to tables is 5: 2 and the constant variation is 5.

the equation is y=5x

starting with:    

5 + x - 12 = 2x - 7   

5 + x - 12 - x = 2x - 7 - x (subtract x from both sides)   

5 - 12 = x - 7 (combine and cancel x's from both sides)   

5 - 12 + 7 = x - 7 + 7 (add 7 to both sides)   

0 = x (add numbers together on both sides)       

so in order for the equation to be true, x must be 0.   

trying x = -0.5   

5 + x - 12 = 2x - 7 (original equation)   

5 + -0.5 - 12 = 2(-0.5) - 7 (plug in value of x)   

5 + -0.5 - 12 = -1 - 7 (did multiplication)   

-7.5 = -8 (did addition on both sides)       

since -7.5 is obviously not equal to -8, the value of -0.5 for x is wrong.   

trying x = 0   

5 + x - 12 = 2x - 7 (original equation)   

5 + 0 - 12 = 2(0) - 7 (plug in value of x)   

5 + 0 - 12 = 0 - 7 (did multiplication)   

-7 = -7 (did addition on both sides)       

since -7 equals -7, that demonstrates that the value of 0 for x is correct.   

trying x = 1   

5 + x - 12 = 2x - 7 (original equation)   

5 + 1 - 12 = 2(1) - 7 (plug in value of x)   

5 + 1 - 12 = 2 - 7 (did multiplication)   

-6 = -5 (did addition on both sides)       

since -6 is obviously not equal to -5, the value of 1 for x is wrong.