Complete the proof. Given: AB = 7x + 1, BC = 4x, AC = 111
Prove: x = 10

Statement Reason
1. AB = 7x + 1, BC = 4x, AC = 111 1. Given
2. AC = AB + BC 2.
3. 111 = 7x + 1 + 4x 3.
4. 111 = 11x + 1 4. Combine Like Terms
5. 110 = 11x 5. Subtraction Property of Equality
6. 10 = x 6. Division Property of Equality
7. x = 10 7.

3x + 18 = 147°

step-by-step explanation:

3x + 18 = 147°, because the value of the central angle is equal to the value of the arc formed by it.

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salary

step-by-step explanation:

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional