The answer is: Negative number
Answer: C. 
is the missing statement.
Explanation: Given: ΔABC with m∠ABC = 90° (view diagram)
Prove: 
Proof: 1. Draw 
(construction)
2. 
(Angles with the same measure are congruent.)
3. (Reflexive Property of Congruence)
4. 
(AA criterion for similarity)
5. BC:DC=AC:BC (Corresponding sides of similar triangles are proportional.)
6.
(cross multiplication)----------(1)
7. 
(Angles with the same measure are congruent)
8. 
(Reflexive Property of Congruence)
9. 
(AA criterion for similarity)
10. AB:AD=AC:AB⇒
--------------(2)
equation (1) + equation (2) ⇒
⇒
First step
You must stablish a relation
150 ml sauce/100 ml vinegar
If 100 ml vinegar_______150ml sauce then 11 ml vinegar ____x ml sauce
Second step
You must resolve x from the equation
X= (11ml vinegar*150 ml soya)/(100 ml vinegar)= 16.5 ml sauce, it means that it will be 16,5 ml sauce by every 11 ml of vinegar
Answer: x < 6
<u>Step-by-step explanation:</u>
5x - 9 < 21
<u> + 9</u> <u>+9 </u>
5x < 30
<u>÷5 </u> <u>÷5 </u>
x < 6
